Here are some simple Cooling and
Heating Terms to help you understand today's HVAC and how it works in
keeping your home and business comfortable year round.
compressor that uses a more efficient process for compressing refrigerant
for better cooling efficiency.
Utilization Efficiency. Indicated as a percentage, your furnaces
AFUE tells you how much energy is being converted to heat. For example, an
AFUE of 90 means that 90% of the fuel is being used to warm your home,
while the other 10% escapes as exhaust with the combustion gases.
BTUBritish Thermal Unit. Used for both heating
and cooling, BTU is a measure of the heat given off when fuel is
combusted. Or for cooling, its a measure of heat extracted from your
home. One BTU is equal to the heat given off by a wooden kitchen match.
CapacityThe ability of a heating or cooling
system to heat or cool a given amount of space. For heating, this is
usually expressed in BTUs. For cooling, it is usually given in tons.
CompressorPart of a split-system heat pump or air
conditioners outdoor unit that controls the pressure applied to the
refrigerant, necessary for taking in heat to warm your home or getting rid
of heat to keep your home cool.
Condenser CoilPart of the outdoor portion of a
split-system air conditioner or heat pump. By converting refrigerant that
is in a gas form back to a liquid, the coil sends heat carried by the
refrigerant to the outside.
DamperA type of "valve" used in duct
work that opens or closes to control airflow. Used in zoning to control
the amount of warm or cool air entering certain areas of your home.
DownflowA type of furnace that takes cool air
from the top and blows warm air to the bottomcommon where your
furnace must be located in a second-floor closet or utility area.
Electronic Air Cleaner (EAC)An electronic device
that filters out large particles and contaminants in indoor air. It then
electronically pulls out tiny particles that have been magnetized, such as
viruses and bacteria, drawing them to a collector plate.
Load EstimateA series of studies performed to
determine the heating or cooling requirements of your home. An energy load
analysis uses information such as the square footage of your home, window
or door areas, insulation quality and local climate to determine the
heating and cooling capacity needed by your furnace, heat pump or air
conditioner. When referring to heating, this is often known as a Heat Loss
Analysis, since a homes heating requirements are determined by the
amount of heat lost through the roof, entry ways and walls.
Evaporator CoilPart of a split-system air
conditioner or heat pump located indoors. The evaporator coil cools and
dehumidifies the air by converting liquid refrigerant into a gas, which
absorbs the heat from the air. The warmed refrigerant is then carried
through a tube to the outdoor unit (condenser coil). Fan CoilAn
indoor component of a heat pump system, used in place of a furnace, to
provide additional heating on cold days when the heat pump does not
provide adequate heating.
HVACTerm used for Heating, Ventilation, and Air
HSPFThe Heating Seasonal Performance Factor is a
measure of the heating efficiency of a heat pump. The higher the HSPF
number, the more efficiently the heat pump heats your home.
Horizontal FlowA type of furnace, installed on
its "side," that draws in air from one side, heats it and sends
the warm air out the other side. Most often used for installations in
attics or crawl spaces.
HumidifierA piece of equipment that adds water
vapor to heated air as it moves out of the furnace. This adds necessary
moisture to protect your furnishings and reduce static electricity.
Matched SystemA heating and cooling system
comprised of products that have been certified to perform at promised
comfort and efficiency levels when used together, and used according to
design and engineering specifications.
Operating CostThe day-to-day cost of running your
home comfort equipment, based on energy use.
Payback AnalysisOverall measure of the efficiency
and value of your home comfort system. By combining your purchase price
and ongoing operating costs, a payback analysis determines the number of
years required before monthly energy savings offset the purchase price.
ReclaimingReturning used refrigerant to the
manufacturer for disposal or reuse.
Reciprocating CompressorA type of compressor used
in air conditioners that compresses refrigerant by using a type of "piston"
RecyclingRemoving, cleaning and reusing
SEERThe Seasonal Energy Efficiency Ratio is a
measure of the cooling efficiency of your air conditioner or heat pump.
The higher the SEER number, the more efficient the system is at converting
electricity into cooling power.
Scroll CompressorA specially designed compressor
that works in a circular motion vs. an up and down piston action.
Setback ThermostatA state-of-the-art electronic
thermostat with a built-in memory that can be programmed for different
temperature settings at different times of the day.
Split SystemRefers to an air conditioner or heat
pump that has components in two locations. Usually, one part of the system
is located inside (evaporator coil) and the other is located outside your
home (condenser coil).
ThermostatUnit that monitors and controls your
HVAC system products.
TonA unit of measure for cooling capacity. One
ton = 12,000 BTUs per hour.
Total Home Comfort SystemThe ultimate solution to
providing you with consistent, customized home comfort, despite the
UpflowA type of furnace that draws cool air from
the bottom and blows the warmed air out the top into the duct work. This
type of furnace is usually installed in a basement or an out-of-the-way
VentilatorA ventilator captures heating or
cooling energy from stale indoor air and transfers it to fresh incoming
Zone PerfectOur exclusive zoning system,
designed to work in conjunction with properly matched HVAC products to
enhance energy efficiency by as much as 30%.
ZoningA way to increase your home comfort and
energy efficiency by controlling when and where heating and cooling occurs
in a home. Programmable thermostats are used to control operating times of
the equipment. Dampers are used to direct air flow to certain parts or "zones"
of the home.