Air systems as part of Building’s HVAC System
Our knowhow and hands-on experience in variety of Air Systems and associated components will accompany the projects from installation to start-up and commissioning.
Our services can install following individual equipment as well as their integration with building systems.
So from installation to start-up, commissioning and integration you can count on us:
| Packaged Heat Cool Rooftop Units | ✔ |
| Dedicated Outdoor Air System Units (DOAS) | ✔ |
| Air Handling Units (AHU) | ✔ |
| Variable Air Volume Boxes | ✔ |
| Heat Recovery Units (HRV) and Energy Recovery Units (ERV) | ✔ |
| Variable Refrigerant Flow (VRF) or Variable Refrigerant Volume (VRV) Systems | ✔ |
| Multi-Zone Air Cooled Heat Pump Units | ✔ |
| Demand Based Ventilation Systems | ✔ |
| Special Filtration Systems | ✔ |
| Air Purification Systems | ✔ |
| Packaged Heat Cool Rooftop Unit | ✔ |
| Dedicated Outdoor Air System Units (DOAS) | ✔ |
| Air Handling Units (AHU) | ✔ |
| Variable Air Volume Boxes | ✔ |
| Heat Recovery Units (HRV) and Energy Recovery Units (ERV) | ✔ |
| Variable Refrigerant Flow (VRF) or Variable Refrigerant Volume (VRV) Systems | ✔ |
| Multi-Zone Air Cooled Heat Pump Units | ✔ |
| Demand Based Ventilation Systems | ✔ |
| Special Filtration Systems | ✔ |
| Air Purification Systems | ✔ |
Packaged Heat-Cool Rooftop Units
A packaged rooftop unit, or RTU, is a type of HVAC system that contains all the components needed to provide conditioned air integrated in one packaged unit.
Packaged rooftop units are commonly used in light and large commercial applications. They are the most popular with retail and industrial premises.
A typical Packaged Heat-Cool Rooftop Unit is comprised of:
Main Components
- Supply Blower Section
- Gas Heat Exchanger
- Direct Expansion Coil
- Compressor(s)
- Condenser Coil
- Condenser Fan(s)
- Filter Section
- Fresh Air Hood and Water Filter
- Roof Curb
Optional Components
- Economiser Assembly for Free Cooling feature and economization in Cooling Mode
- Power Exhaust Fan(s)
- Heat Recovery Section
- Hot Gas Bypass (dehumidification)
- Supply Blower Motor Variable Frequency Drive (VFD)
- Condenser Fan Motor Variable Frequency Drive (VFD)
- Modulating Gas Valve (Modulating Heating)
- Condensing Gas Heat Exchanger (High Efficiency Heating)
- Inverter Equipped Compressor (Modulating Cooling)
- Low Temperature Cooling Kit
- Differential Pressure Sensor across the filter section to notify the dirty filters
- Microprocessor Control Board to connect with Building Automation System (BAS)
- BACnet Capability to communicate with Building Automation System
Special Consideration When Installing A Rooftop Unit:
- Ducted Return Air versus Return Plenum
- Smoke Detector on Supply and or Return Duct
- CO2 Sensor for Demand Control ventilation (DCV)
- Supply Duct Pressure Static Pressure Sensor for variable Air Volume (VAV) Air Distribution Systems
- Supply Air Temperature Sensor when controlling the rooftop unit based on Supply Air Temperature
- Return Air Temperature Sensor when controlling the rooftop unit based on Supply Air Temperature
- Programmable Thermostat with Occupancy Capability for Closing the Fresh Air Damper When the Space is not occupied but does need to be in service for temperature control
- VVT Boxes including actuator, sensors and damper for making a Multi Zone Air Systems served by one rooftop unit
- Vibration Isolation Rail
- Flexible Gas Line Connector
- Sound Attenuator (Silencers) on supply and or return ducts
In Comfort Care, we have expert installers for installation, start-up and commissioning of rooftop units. We have experienced crews for performing preventive maintenance per the manufacturers’ instructions. Our Crews are very well trained and experienced with the following brands:
Dedicated Outdoor Air Systems (DOAS)
A dedicated outdoor air system (DOAS) is a unit which supplies tempered air (heated and or cooled), dehumidified outside air to the building.
For the energy recovery purposes, the unit can also include an energy wheel. The energy recovery wheel could recover up to 80% of exhausting air energy reducing the heating and cooling capacity requirement of the DOAS unit significantly.
A typical Dedicated Outdoor Air System is comprised of:
Main Components
- Supply Blower Section
- Heating Section: Heating the incoming air can be with either of the following components:
- Gas heat Exchanger and Modulating Gas valve
- Hot Water (Glycol Solution) Coil
- Electric Heater
- Steam Coil
- Cooling Section: Heating the incoming air can be with either of the following components:
- Direct Expansion Coil, Compressor(s), Condenser Coil and Condenser Fan(s)
- Chilled Water Coil
- Filter Section
- Fresh Air Hood and Water Filter
- Roof Curb
Optional Components:
- Exhaust Fan
- Exhaust Air Hood
- Heat Recovery Section
- Hot Gas Bypass (dehumidification)
- Wrap Around Coil
- Supply Blower Motor Variable Frequency Drive (VFD)
- Exhaust Air Fan Motor Variable Frequency Drive (VFD)
- Condenser Fan Motor Variable Frequency Drive (VFD)
- Condensing Gas Heat Exchanger (High Efficiency Heating)
- Inverter Equipped Compressor (Modulating Cooling)
- Differential Pressure Sensor across the filter section to notify the dirty filters
- Microprocessor Control Board to connect with Building Automation System (BAS)
- BACnet Capability to communicate with Building Automation System
Special Consideration When Installing A Rooftop Unit:
- Ducted Return Air versus Return Plenum
- Smoke Detector on Supply and or Return Duct
- CO2 Sensor for Demand Control ventilation (DCV)
- Supply Duct Pressure Static Pressure Sensor for variable Air Volume (VAV) Air Distribution Systems
- Supply Air Temperature Sensor when controlling the rooftop unit based on Supply Air Temperature
- Return Air Temperature Sensor when controlling the rooftop unit based on Supply Air Temperature
- VVT Boxes including actuator, sensors and damper for making a Multi Zone Air Systems served by one rooftop unit
- Vibration Isolation Rail
- Flexible Gas Line Connector
- Sound Attenuator (Silencers) on supply and or return ducts
In Comfort Care, our crews install, start-up and commission the DOA units. We have experienced crews for performing preventive maintenance per the manufacturers’ instructions. Our Crews are very well trained and experienced with the following brands:
