Heating & Cooling - Buyers Guide

HVAC Contractors Terminology

Accumulator: Shell device designed to prevent liquids from entering the compressor.

Active Cooling: HVAC contractors' reference to compressor driven air-conditioning.

Boiler Pressure: Measured steam or water pressure in a boiler.

Central heating System: In HVAC units it refers to a single appliance that spreads heat through a network of ducts to areas of the building.

Cooling Capacity: The quantity of heat an appliance is able to cool in an hour.

Dampers: dampers control the airflow through an air outlet or duct.

Dual Duct System: An air conditioning system with a heated and a cooled duct.

Exhaust Ventilation: Mechanical removal of air from a part of a building.

Filter (air): Mechanical filtration device that removes contaminants before the air enters living space.

Fuel Efficiency: Ratio of heat produced by fuel.

Home Energy Rating System (HERS): An energy rating program that indicates energy losing deficiencies in a property.

IAP: Indoor air pollution.

Integrated Heating Systems: Heating solutions that perform more than one function.

Mechanically Ventilated Crawlspace System: Application designed to increase ventilation within a crawlspace.

Outdoor Air Supply (or Make-Up Air): Air brought into a building from outdoors.

Radiant Heating System: HVAC reference to systems where heated surfaces supply heat to a room.

Space Heater: Mobile heater designed for the heating of individual spaces.

Tankless Water Heater: System that heats water before it is distributed for end use.

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The form was easy to fill out and took only a few minutes. It was easy for me to find the service I needed, and I quickly heard from a couple of helpful companies.

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