A sensor circuit is provided, including a float sensor and a refrigerant sensor. The float sensor includes a float housing a float, and a switch. The float housing has an opening on a first side wall and can contain liquid that flows into and out of the float housing through the opening. The float is in the float housing and rises or falls based on a level of liquid in the float housing. The switch is connected to the float and transmits a signal when the liquid in the float housing rises to a predetermined height. The refrigerant sensor circuit is connected to the float sensor, includes a refrigerant sensor, and detects a level of refrigerant in second air formed at least in part from first air in the float housing. The refrigerant pipe is connected to a second wall of the float housing fully above the predetermined height.
G01F 23/60 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements using electrically actuated indicating means
F25B 49/00 - Arrangement or mounting of control or safety devices
4.
AIR CONDITIONER CONTAINING DRAIN PAN AND REFRIGERANT SENSOR
An air conditioner is provided, comprising: a drain pan including plurality of drain pan walls forming an outer circumference of the drain pan, and a drain pan bottom, connected to each of the plurality of drain pan walls such that the plurality of drain pan walls and the drain pan bottom form a basin capable of collecting liquid; and a refrigerant sensor arranged proximate to a first outer surface of a first drain pan wall selected from the plurality of drain pan walls, the refrigerant sensor being configured to detect refrigerant in air proximate to the drain pan. The first drain pan wall includes a first recess on the first outer surface, and the refrigerant sensor is located in the first recess.
A dedicated outdoor air system (DOAS) includes an outdoor air channel, an energy exchange chamber, and a HEX chamber. The energy exchange chamber receives outdoor air from the outdoor air channel and includes an air exchanger generating supply air by transferring energy between the outdoor air and return air. The HEX chamber receives the supply air from the energy exchange chamber. The HEX chamber includes a HEX assembly for cooling and/or heating the supply air provided by the energy exchange chamber. The HEX chamber is defined by a frame including a plurality of sides and an insulating component. A first side of the frame defines an aperture to slidably accept the HEX assembly into an enclosed position within the frame. The insulating component is fixedly arranged within the frame and includes a working surface configured for sliding the HEX assembly into the enclosed position.
A coil assembly is provided, comprising: a direct expansion (DX) coil circulating refrigerant and cooling supply air passing over the DX coil by heat exchange to generate dehumidified air; a reheat coil circulating the refrigerant and heating the dehumidified air by heat exchange to generate output air; a first horizontal drain pan below the DX and reheat coils in a first horizontal position; a second horizontal drain pan below the DX and reheat coils in a second horizontal position; a first vertical drain pan below the DX and reheat coils in a vertical position, wherein the first and second horizontal drain pans are connected to the first vertical drain pan, the reheat coil is secured between the first and second horizontal drain pans, and the first horizontal drain pan is on an opposite side of the DX coil and the reheat coil from the second horizontal drain pan.
F24F 13/30 - Arrangement or mounting of heat-exchangers
F24F 13/22 - Means for preventing condensation or evacuating condensate
F24F 3/153 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidificationAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by dehumidification with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature
12.
System and method for controlling the operation of a fan in an air conditioning system
A computer-implemented method is provided of controlling operation of an indoor fan in an air conditioning system, the method including: setting a fan speed of the indoor fan to a maximum value; storing a first low temperature as a low temperature threshold; measuring the indoor temperature in an indoor space as a current indoor temperature; subtracting a set point temperature from the current indoor temperature to determine a temperature difference; determining that the temperature difference is less than the low temperature threshold; and reducing the fan speed by a first adjustment interval, storing a second low temperature difference as the low temperature threshold, and storing a second high temperature as a high temperature threshold, all in response to the determining that the current temperature difference is less than the low temperature threshold.
G05B 15/02 - Systems controlled by a computer electric
F24F 11/77 - Control systems characterised by their outputsConstructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
F24F 11/64 - Electronic processing using pre-stored data
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Downloadable mobile applications for facilitating the use of
drones for the transportation of goods; downloadable mobile
applications for tracking the shipment of goods by drones;
downloadable mobile applications for arranging services for
the operation and maintenance of drones; downloadable mobile
applications for managing, offering for sale, and purchasing
drones. Software as a service (SaaS) services featuring software for
facilitating the use of drones for the transportation of
goods; software as a service (SaaS) services featuring
software for tracking the shipment of goods by drones;
software as a service (SaaS) services featuring software for
arranging services for the operation and maintenance of
drones; software as a service (SaaS) services featuring
software for managing, offering for sale, and purchasing
drones.
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Downloadable mobile applications for facilitating the use of
drones for the transportation of goods; downloadable mobile
applications for tracking the shipment of goods by drones;
downloadable mobile applications for arranging services for
the operation and maintenance of drones; downloadable mobile
applications for managing, offering for sale, and purchasing
drones. Software as a service (SAAS) services featuring software for
facilitating the use of drones for the transportation of
goods; software as a service (SAAS) services featuring
software for tracking the shipment of goods by drones;
software as a service (SAAS) services featuring software for
arranging services for the operation and maintenance of
drones; software as a service (SAAS) services featuring
software for managing, offering for sale, and purchasing
drones.
15.
Air-conditioning unit having a coil with an active portion and an inactive portion
An air-conditioning unit is provided, comprising: an input vent for receiving return air; an intermediate vent; an output vent; a blower fan proximate to the input vent for moving the return air from the input vent to the intermediate vent; and an air-conditioner coil between the intermediate vent and the output vent including an active portion including one or more operational air-conditioning coils that receive a first portion of the return air from the intermediate vent, for circulating a coolant, condition the first portion of the return air by heat exchange with the coolant to create conditioned air, and pass the conditioned air to the output vent, and an inactive portion that does not circulate coolant and passes a second portion of the return air as unconditioned air to the output vent, wherein the conditioned air and the unconditioned air pass through the output vent as supply air.
F24F 1/0041 - Indoor units, e.g. fan coil units characterised by exhaustion of inside air from the room
F24F 1/0063 - Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
F24F 1/009 - Indoor units, e.g. fan coil units characterised by heating arrangements
F24F 1/01 - Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station in which secondary air is induced by injector action of the primary air
F24F 11/873 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling refrigerant heaters
F24F 12/00 - Use of energy recovery systems in air conditioning, ventilation or screening
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Downloadable mobile applications for use in the operation of drones for the transportation of goods; downloadable mobile applications for tracking the shipment of goods by drones; downloadable mobile applications for scheduling services for the operation and maintenance of drones; downloadable mobile applications for inventory management, for the sale and purchasing of drones. (1) Software as a service (SAAS) services featuring software for use in the operation of drones for the transportation of goods; software as a service (SAAS) services featuring software for tracking the shipment of goods by drones; software as a service (SAAS) services featuring software for scheduling services for the operation and maintenance of drones; software as a service (SAAS) services featuring software for inventory management, for the sale and purchasing of drones.
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Downloadable mobile applications for use in the operation of drones for the transportation of goods; downloadable mobile applications for tracking the shipment of goods by drones; downloadable mobile applications for scheduling services for the operation and maintenance of drones; downloadable mobile applications for inventory management, for the sale, and purchasing of drones (1) Software as a service (SAAS) services featuring software for use in the operation of drones for the transportation of goods; software as a service (SAAS) services featuring software for tracking the shipment of goods by drones; software as a service (SAAS) services featuring software for scheduling services for the operation and maintenance of drones; software as a service (SAAS) services featuring software for inventory management, for the sale, and purchasing of drones.
An air handler, comprising: a heating and cooling coil to exchange heat with input air to generate conditioned air; an air diffuser to diffuse the conditioned air to generate diffused air; and an air blower to draw the input air into the air handler via an air inlet, pass the input air over the heating and cooling coil, pass the conditioned air through the diffuser, and expel the diffused air through an air outlet as output air, wherein the air diffuser contains one or more baffles to create two or more air passages that operate to control the expansion and reduction of kinetic energy of the conditioned air to generate the diffused air, a first direction represents a direction of a shortest line between the air blower and the outlet, the air diffuser passes air in a second direction displaced from the first direction by a deflection angle.
42 - Scientific, technological and industrial services, research and design
Goods & Services
Software as a service (SAAS) services featuring software for facilitating the use of drones for the transportation of goods; Software as a service (SAAS) services featuring software for tracking the shipment of goods by drones; Software as a service (SAAS) services featuring software for arranging services for the operation and maintenance of drones; Software as a service (SAAS) services featuring software for managing, offering for sale, and purchasing drones
09 - Scientific and electric apparatus and instruments
Goods & Services
Downloadable mobile applications for facilitating the use of drones for the transportation of goods; Downloadable mobile applications for tracking the shipment of goods by drones; Downloadable mobile applications for arranging services for the operation and maintenance of drones; Downloadable mobile applications for managing, offering for sale, and purchasing drones
An air-to-air heat recovery core, comprising: a core assembly having parallel first and second channels that are open to first and second sides of the core assembly, respectively, the first and second channels interleaved, and each first channel sharing a wall with an adjacent second channel; first and second sealants formed along opposite first and second edges, respectively, of the core assembly perpendicular to a running direction of the first and second channels, the first and second sealants respectively blocking first and second ends of the channels; and first and second panels secured to first and second sides of the core assembly, respectively, the first and second panels blocking a middle portion of the first and second channels, respectively, such that air can enter and leave the first and second channels via the first and second end portions of the first and second channels but not via the middle portions.
F28D 9/00 - Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
F24F 12/00 - Use of energy recovery systems in air conditioning, ventilation or screening
F28D 21/00 - Heat-exchange apparatus not covered by any of the groups
25.
Low-power HVAC remote controller and method of operating the same
A heating, ventilation and air-conditioner (HVAC) remote controller for providing instructions for operation of an HVAC system, including a processor configured to control operation of the HVAC remote controller and to generate instructions for the operation of the HVAC system; a pixelated display configured to consume less power when the pixelated display is in a static state than when it is not in the static state; a local input device configured to accept data from an operator; a light configured to illuminate the pixelated display; an isolated power source configured to provide operational power to at least the processor, the pixelated display, and the light; wherein the controller is configured to keep the light turned off except when the processor is actively performing an operation to control the HVAC system.
An air-conditioning unit is provided, comprising: an input vent for receiving return air; an intermediate vent; an output vent; a blower fan proximate to the input vent for moving the return air from the input vent to the intermediate vent; and an air-conditioner coil between the intermediate vent and the output vent including an active portion including one or more operational air-conditioning coils that receive a first portion of the return air from the intermediate vent, for circulating a coolant, condition the first portion of the return air by heat exchange with the coolant to create conditioned air, and pass the conditioned air to the output vent, and an inactive portion that does not circulate coolant and passes a second portion of the return air as unconditioned air to the output vent, wherein the conditioned air and the unconditioned air pass through the output vent as supply air.
F24F 1/0041 - Indoor units, e.g. fan coil units characterised by exhaustion of inside air from the room
F24F 1/0063 - Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
F24F 1/01 - Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station in which secondary air is induced by injector action of the primary air
F24F 12/00 - Use of energy recovery systems in air conditioning, ventilation or screening
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Downloadable mobile applications for facilitating the use of drones for the transportation of goods; Downloadable mobile applications for tracking the shipment of goods by drones; Downloadable mobile applications for arranging services for the operation and maintenance of drones; Downloadable mobile applications for managing, offering for sale, and purchasing drones Software as a service (SAAS) services featuring software for facilitating the use of drones for the transportation of goods; Software as a service (SAAS) services featuring software for tracking the shipment of goods by drones; Software as a service (SAAS) services featuring software for arranging services for the operation and maintenance of drones; Software as a service (SAAS) services featuring software for managing, offering for sale, and purchasing drones
09 - Scientific and electric apparatus and instruments
Goods & Services
system for remotely monitoring heating, ventilation, and air conditioning equipment comprised of network servers, electronic controllers for heating, ventilation, and air conditioning equipment, and downloadable software applications for remotely monitoring and controlling the function and status of heating, ventilation, and air conditioning equipment
A refrigeration cycle device, comprising: a compressor configured to compress a refrigerant; an outdoor air heat exchanger configured to exchange heat between the refrigerant and outside air located outside a target space; an indoor air heat exchanger configured to exchange heat between the refrigerant and inside air located inside the target space; a water heat exchanger configured to exchange heat between the refrigerant and water; a four-way valve located between an indoor port on the indoor air heat exchanger, an outdoor port on the outdoor air heat exchanger, an input port on the compressor, and an output port on the compressor; a bypass refrigerant line connecting the indoor port to the outdoor port; and a controllable valve located on the bypass refrigerant line, the controllable valve being configured to have an open state that passes the refrigerant and a closed state that prohibits passage of the refrigerant.
A filter box mounts to an air intake opening of an air handler. The filter box includes an inner shell, insulator, and an outer shell. The inner shell is adapted to confine one or more filters therein. The inner shell defines an airflow channel from a front end opening of the inner shell through the filter(s) to a rear end opening of the inner shell. The outer shell defines a chamber from a front end opening of the outer shell to a rear end opening of the outer shell. The outer shell contains the inner shell in the chamber and the insulator is sandwiched between the outer shell and the inner shell. The inner shell and the outer shell are separated and spaced apart all over by the insulator and the insulator insulates and seals the inner shell from the outer shell.
A computer-implemented method is provided of controlling a heating, ventilation, and air-conditioning (HVAC) system having a heat pump and an auxiliary heater to heat an inside zone, the method comprising: setting values for an economic balance point and a temperature set point; setting a capacity balance point to be equal to the economic balance point; measuring an initial inside temperature in the inside zone and an outside temperature outside of a structure containing the inside zone; determining that the initial inside temperature is lower than the temperature set point; determining that the outside temperature is greater than the capacity balance point; activating the heat pump to heat the inside zone; waiting a heating interval while the heat pump is active; determining that the heat pump is not effective in heating the inside zone; and setting the capacity balance point to be equal to the outside temperature.
F24F 11/46 - Improving electric energy efficiency or saving
F24F 11/67 - Switching between heating and cooling modes
F24F 11/86 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
F24F 11/61 - Control or safety arrangements characterised by user interfaces or communication using timers
F24F 11/64 - Electronic processing using pre-stored data
A refrigeration cycle device, comprising: a compressor configured to compress a refrigerant; an outdoor air heat exchanger configured to exchange heat between the refrigerant and outside air located outside a target space; an indoor air heat exchanger configured to exchange heat between the refrigerant and inside air located inside the target space; a water heat exchanger configured to exchange heat between the refrigerant and water; a four-way valve located between an indoor port on the indoor air heat exchanger, an outdoor port on the outdoor air heat exchanger, an input port on the compressor, and an output port on the compressor; a bypass refrigerant line connecting the indoor port to the outdoor port; and a controllable valve located on the bypass refrigerant line, the controllable valve being configured to have an open state that passes the refrigerant and a closed state that prohibits passage of the refrigerant.
An air-conditioning unit is provided, comprising: an input vent for receiving return air; an intermediate vent; an output vent; a blower fan proximate to the input vent for moving the return air from the input vent to the intermediate vent; and an air-conditioner coil between the intermediate vent and the output vent including an active portion including one or more operational air-conditioning coils that receive a first portion of the return air from the intermediate vent, for circulating a coolant, condition the first portion of the return air by heat exchange with the coolant to create conditioned air, and pass the conditioned air to the output vent, and an inactive portion that does not circulate coolant and passes a second portion of the return air as unconditioned air to the output vent, wherein the conditioned air and the unconditioned air pass through the output vent as supply air.
F24F 1/0041 - Indoor units, e.g. fan coil units characterised by exhaustion of inside air from the room
F24F 1/0063 - Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
F24F 1/01 - Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station in which secondary air is induced by injector action of the primary air
F24F 12/00 - Use of energy recovery systems in air conditioning, ventilation or screening
An air-conditioner, comprising: an indoor coil; an outdoor coil; a drain pan under the indoor and outdoor coils, the drain pan including a slinging trough having a slinging depth, a draining trough having a draining depth, a pumping trough having a pumping depth, and a drain hole formed in a bottom surface of the draining trough; a drain valve for selectively allowing liquid to pass through the drain hole; a drain pump for selectively pumping liquid out of the pumping trough; a fan for blowing air on the outdoor coil and moving the liquid from the slinging trough onto the outdoor coil when the fan is operating; and a controller for controlling operation of at least the drain pump and the fan, wherein the pumping depth is greater than the draining depth, the draining depth is greater than the slinging depth.
A wind baffle operable to control air movement to an air inlet of an air-conditioner, the wind baffle comprising: a frame defining an inlet side, an outdoor side opposite the inlet side, and a plurality of wall sections between the inlet side and the outdoor side; a back plate formed on the outdoor side; a first variable air vent formed on a first wall section and being configured to selectively pass or restrict a first air flow through the first variable air vent; a second variable air vent formed on a second wall section and being configured to selectively pass or restrict a second air flow through the second variable air vent; and a securing mechanism on the inlet side configured to attach the wind baffle to the air inlet such that the inlet side faces the air inlet, wherein the inlet side is unobstructed, allowing air to pass freely.
A water-heating system, including: a controller; a refrigerant-water heat exchanger for exchanging heat between refrigerant and water; a sensor circuit for measuring a current water temperature of water in a water heater and providing the current water temperature to the controller; a first refrigerant pipe for passing the refrigerant from a refrigerant source to the refrigerant-water heat exchanger; a second refrigerant pipe for passing the refrigerant from the refrigerant-water heat exchanger to the refrigerant source; a first water pipe for passing the water from the water heater to the refrigerant-water heat exchanger; a second water pipe for passing the water from the refrigerant-water heat exchanger to the water heater; and a water pump for pumping water from the water heater to the refrigerant-water heat exchanger via the first water pipe and from the refrigerant-water heat exchanger to the water heater via the second water pipe based on a control signal.
A water-heating system, including: a controller; a refrigerant-water heat exchanger for exchanging heat between refrigerant and water; a sensor circuit for measuring a current water temperature of water in a water heater and providing the current water temperature to the controller; a first refrigerant pipe for passing the refrigerant from a refrigerant source to the refrigerant-water heat exchanger; a second refrigerant pipe for passing the refrigerant from the refrigerant-water heat exchanger to the refrigerant source; a first water pipe for passing the water from the water heater to the refrigerant-water heat exchanger; a second water pipe for passing the water from the refrigerant-water heat exchanger to the water heater; and a water pump for pumping water from the water heater to the refrigerant-water heat exchanger via the first water pipe and from the refrigerant-water heat exchanger to the water heater via the second water pipe based on a control signal.
09 - Scientific and electric apparatus and instruments
Goods & Services
Downloadable computer application software for mobile phones, namely, software for monitoring and controlling heating, ventilation, and air conditioning equipment
09 - Scientific and electric apparatus and instruments
Goods & Services
system for remotely monitoring heating, ventilation, and air conditioning equipment comprised of network servers, electronic controllers, and downloadable software applications for remotely monitoring and controlling the function and status of heating, ventilation, and air conditioning equipment
An air-conditioning system is provided, comprising: an air conditioner including a first fan having a first fan input configured to receive first input air, and a first fan output configured to generate a first output air stream in a horizontal direction, and a second fan having a second fan input configured to receive second input air, and a second fan output configured to generate a second output air stream in the horizontal direction; an air baffle including a first upflow duct attached to the air-conditioner and configured to direct the first output air stream into a first deflected air stream flowing in a first direction between 0 degrees and 45 degrees from vertical, and a second upflow duct attached to the air-conditioner and configured to direct the second output air stream into a second deflected air stream flowing in a second direction between 0 degrees and 45 degrees from vertical.
A supplemental heat-providing system is provided for heating a refrigerant. The system includes an outdoor unit that can act as a heat pump located outside a building and configured to use the refrigerant to condition an indoor space inside the building; a hot water heater located in the building and connected to one or more points of use in the building, the hot water heater being configured to heat water and provide the water to the one or more points of use; a water-refrigerant heat exchanger containing a refrigerant pathway and a water pathway, configured to pass the refrigerant from the outdoor unit through the refrigerant pathway, to pass the water from the hot water heater through the water pathway, and to exchange heat from the water to the refrigerant; and a water pump configured to selectively pump the water from the hot water heater through water pathway.
F25B 29/00 - Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
F25D 17/02 - Arrangements for circulating cooling fluidsArrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
F24D 17/02 - Domestic hot-water supply systems using heat pumps
F24F 5/00 - Air-conditioning systems or apparatus not covered by group or
Providing an incentive award and loyalty program for HVAC contractors that includes recognition plaques, financial incentives, priority listing in contractor databases, access to exclusive warranties, preferred pricing on warranties, use of exclusive logos, priority access to technical support, access to financing programs, and invitations to special events, for satisfying training, licensing, and purchase volume requirements
A heat pump system with a hybrid heating system is disclosed. The heat pump system includes a first housing comprising a heat exchanger, a compressor, and a fan. The heat pump system also includes a second housing that includes a supplemental heat source that is activated when the outside air falls below a certain temperature. The second housing includes a series of dampers that permit recirculation of the air passing through the first housing so that the supplemental heat source can provide heat to the recirculated air. The supplemental heat source increases the heating capacity of the heat pump system.
An air conditioning system with precisely controlled dehumidification functions is disclosed. The air conditioning system comprises an indoor air handling system comprising a primary heat exchanger and a secondary heat exchanger. The indoor air handling system can be coupled to an outdoor unit comprising a compressor and an outdoor heat exchanger. When a controller system receives a measured humidity that exceeds a set humidity, the controller system can increase the cooling capacity of the air conditioning system to meet a set temperature. Once the set temperature is met, the controller system can switch to a dehumidification mode wherein the primary heat exchanger is cooled and the secondary heat exchanger is activated. When the measured temperature exceeds the set temperature, the controller system can switch from the dehumidification mode back to cooling mode.
F24F 5/00 - Air-conditioning systems or apparatus not covered by group or
F24F 3/14 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidificationAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by dehumidification
F24F 11/30 - Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Software for monitoring and controlling heating, ventilation, and air conditioning equipment using the internet On-line web site for monitoring and controlling heating, ventilation, and air conditioning equipment
