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Additional Products & Accessories

Air Circulation Systems

Fresh air ventilation is required to meet building codes for new construction or to obtain energy tax credits.

Direct Digital Control (DDC)

The automated control of a condition or process by a digital device (computer). DDC takes a centralized network-oriented approach. All instrumentation is gathered by various analog and digital converters which use the network to transport these signals to the central controller. The centralized computer then follows all of its production rules (which may incorporate sense points anywhere in the structure) and causes actions to be sent via the same network to valves, actuators, and other HVAC components that can be adjusted.

Duct Smoke Detectors

National and local safety standards, and codes recognize the ability of air duct systems to transfer smoke, toxic gases, and flame from area to area. Sometimes the amount of smoke can be so high, it can be harmful or fatal unless blowers are shut down and dampers are actuated. The primary purpose of duct smoke detection is to prevent injury, panic and property damage by reducing the spread (re-circulation) of smoke. Duct smoke detection can also serve to protect the air conditioning system itself from fire and smoke damage, and can be used to assist in equipment protection applications.


A duct and damper arrangement, and automatic control system that, together, allow a cooling system to supply outdoor air to reduce or eliminate the Return Relief Air to reduce or eliminate the need for mechanical cooling during mild or cold weather.


Exhaust fans play a major role in air quality and temperature controls for residential, commercial, and industrial applications. They work by drawing stale air out of homes and buildings to be replaced with fresh, outdoor air to meet HVAC industry-recommended air quality standards.

Infrared Heaters

Most infrared heaters are fueled using propane or natural gas, and sometimes oil. The hot temperatures generated by burning fuel inside the unit, heat either a steel tube (tube heater) or ceramic surface (luminous heater) within the heater. The heat from this surface is then emitted in the form of infrared radiant energy. Reflectors direct the infrared radiant energy downward to ultimately warm the floor and objects below it.


  1. According to the Climate Institute, about 20% of the total electricity used in buildings around the world goes towards air conditioners and electric fans. Make sure your next unit meets Energy Starâ„¢ qualifications.
  2. According to the International Facility Management Association, up to 40% of building emissions come form that building HVAC system. Some best ways to reduce a buildings carbon footprint are to make sure that new equipment is as efficient as possible. Program the equipment to run when needed throughout the day, and make sure to have your HVAC units regularly maintained.
  3. Part of our Gold Home Comfort Protection Plan, starting at $32.50 a month, we follow the Energy Starâ„¢ maintenance checklist. This includes cleaning the evaporator and air conditioner condenser coils. Dirty coils reduce efficiency and can shorten the life of your HVAC system.
  4. According to the U.S. Department of Energy, a dirty condenser coil can increase compressor energy consumption by 30%.

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