service :- York ,
Carrier, Mc Quay,
Keeprite, Trane,
Lennox, Goodman,
American Standard,
Coleman, Rinnai,
Olsen
, Bryant, Rheem,
Ruud, Armstrong
Slant/Fin
, Amana,
Unico, Reznor, Payne,
Mr Slim, Krack,
Maytag, Schwank, LG,
Bora, Fujitsu,
Honeywell, Johnson
Controls, White
Rodgers

Some cities we serve in
Ontario :- Toronto,
Mississauga, Brampton,
Etobicoke, East York,
North York, Markham,
Scarborough, Pickering,
Whitby, Ajax, Oshawa,
Bowmanville,
Unionville,
Wooddbridge,
Richmond Hill,
Thornhill, Vaughan,
Aurora, Newmarket,
Barrie, Oakville,
Hamilton, Burlington,
Kitchner, Guelph.
We accepts all major
credit card payment
FINANCING AVAILABLE

HVAC Glossary of Terms:
Annual Fuel Ultilization Efficiency. Used to express the efficiency of gas furnaces.
The high the AFUE rating, the more efficiency unit.

Federal law has required that all new residential furnaces built after January
1992 operate with an AFUE of 78% or higher. All mid and high efficiency  
furnaces are manufactured to exceed these requirements with a minimum AFUE
of 80%.

If your furnace was built before 1992, chances are it is operating with an average
efficiency of around 60%. Most of the heat is lost up the chimney or out the
exhaust vent - devices used by older furnaces to expel dangerous fumes created
by the furnace, such as carbon monoxide, carbon dioxide, aldehydes, and even
soot.

Modern furnaces use more technologically advanced venting techniques to
achieve greater energy efficiency. An important note: Be sure to ask your
installing contractor if your chimney or exhaust vent is suitable for use with your
new equipment.


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AHRI
The Air-Conditioning, Heating, and Refrigeration Institute (AHRI) is the trade
association representing manufacturers of air conditioning, heating and
commercial refrigeration equipment. AHRI’s 300+ member companies account
for more than 90 percent of the residential and commercial air conditioning,
space heating, water heating, and commercial refrigeration equipment
manufactured and sold in North America..


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BTU
Short for British Thermal Unit. The amount of heat required to raise or lower the
temperature of one pound of water by one degree Fahrenheit.


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BTUH
The heat transfer rate of HVAC equipment is measured in British Thermal Units
per Hour.


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CAPACITY
Usually measured in BTUs or tons, capacity refers to an air conditioning or
heating unit's ability to cool or heat a space. For instance, a 20-ton air
conditioning unit has twice the capacity of a 10-ton unit.


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CFM
A unit to express movement of volume, including air, in Cubic Feet per Minute. A
400 CFM air handler moves 400 cubic feet in one minute.


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COMPRESSOR
The compressor plays an integral role in cooling your home. It is the device
responsible for pumping refrigerant through the refrigerant lines and the coil,
making the transfer of heat from inside your house to the outdoors possible.


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CONDENSER
The coil responsible for dissipating heat to the surrounding, outside air. Also
called the condenser coil, or outdoor coil, its role is reversed when a heat pump
is used in heating mode.

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COP
The Coefficient of Performance rates a heat pump's ability to efficiently use
electricity in its operation. The Air Conditioning and Refrigeration Institute
provides the Coefficient of Performance at 47 degrees Fahrenheit and 17
degrees Fahrenheit. This is because a heat pump is more efficient at higher,
outside-air temperatures.


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dB
The relative loudness of a sound is expressed in dB, short for decibel. As an
example, the sound of a human voice talking is around 70 dB. (See also SRN.)


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DOE
A federal agency, the Department of Energy, sets the standards for efficiency
throughout the HVAC industry and monitors consumption of energy sources.


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DOWNFLOW
A term used to describe the direction of airflow through a furnace. A downflow
furnace takes return air from the top, heats it, and then delivers the warm air from
the bottom.


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DUCT/DUCTWORK/DUCTING
A central heating and air conditioning system uses many components to heat or
cool air. This warm or cool air is then transferred to different registers throughout
the house via special, flexible, large-diameter pipes or ducts. The system of
ducts throughout your house is often referred to as ductwork or ducting.


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EER
Energy Efficiency Ratio. The ratio of the cooling capacity of the air conditioner in
BTUs per hour to the total electrical input in watts. This measure is determined
by comparing test units to the Air Conditioning and Refrigeration Institute
specifications.


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EFFICIENCY
A general term used to describe how effectively a heat pump, air conditioning
system, or furnace converts incoming energy to outgoing energy. The higher the
number, the more efficient the unit, and the lower the operating costs.


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EVAPORATOR COIL/EVAPORATOR
An integral part of the indoor unit of a heat pump or air conditioning system. So
called because when warm air passes over a coil filled with liquid refrigerant, the
refrigerant itself evaporates and absorbs some of the heat. This gas refrigerant
is then pumped to the outdoor coil, where it releases heat into the surrounding
air and returns to its liquid state.


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HEAT EXCHANGER
Responsible for transferring heat from furnace burners to the blower.

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HORIZONTAL FLOW
A term used to describe the direction of airflow through a furnace. A horizontal
flow furnace takes return air from one side, heats it, and then delivers the warm
air from the other side.


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HSPF
Heating Seasonal Performance Factor. It measures the efficiency of the heating
portion of your heat pump. The Department of Energy minimum is 6.8. (Similar to
SEER.)


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HUMIDIFIER
Usually available as an optional accessory, a humidifier is used to inject water
vapor into the dry, heated air expelled from a furnace/air handler. The benefits
can be improved efficiency and a more comfortable living environment.


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HVAC
Heating, Ventilating and Air Conditioning. Used to refer to the industry at large,
particularly dealers of heating and air conditioning equipment.


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INDOOR COILS
Split-system home comfort systems use two main components to deliver air for a
comfortable living environment. The indoor coil is the device responsible for
transferring heat from indoors to the outdoors (or the reverse in the case of a
heat pump in heating mode). Most modern systems are designed to achieve
maximum efficiency when the indoor unit (coils and blower) is properly matched
with the outdoor unit (air conditioner or heat pump). For best results, be sure to
replace both the indoor and outdoor units at the same time.


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KILOWATT
A unit used to express 1,000 Watts. Denoted as "kW." Note that the "W" in "kW" is
always capitalized because the Watt unit was named after a person.


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KWH
If a unit uses 1,000 Watts in 1 hour, it is said to have an energy rating of 1kWh.


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MODULATING FURNACES
Furnaces are designed to deliver maximum heat for comfort on the coldest of
days. In most cases, those days account for fewer than three percent of winter
days. The rest of the time, your furnace is providing more heat than necessary.

Because conventional furnaces are either providing no heat, or at full capacity,
the temperature in your house goes up and down by several degrees, adversely
affecting your comfort and your energy bills.

Modulating furnaces solve this problem by varying the amount and temperature
of air delivered between different capacities, so that the air flowing out of the
registers is always at the temperature you determine. This results in lower
operating costs, more comfortable temperatures throughout the house and
quieter operation.


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PACKAGE UNIT
Equipment in which all heating and cooling components are located in one
cabinet. Installed either beside or on top of a home or business.


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REFRIGERANT
The liquid used to absorb and transfer heat from one part of the home comfort
system to another.


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REFRIGERANT LINES
Copper lines used to transfer the refrigerant between the outdoor unit and the
indoor unit.


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SEER
Seasonal Energy Efficiency Rating. Used to express the efficiency of an air
conditioning unit, or a heat pump in cooling mode. The higher the SEER rating,
the more efficient the unit. The Department of Energy minimum is 13 SEER.


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SPLIT SYSTEM
A home comfort system that uses an indoor and an outdoor component to deliver
comfortable air to a living environment.


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SRN
The Air Conditioning and Refrigeration Institute performs tests and assigns a
Sound Rating Number (SRN) to units. A lower SRN rating indicates a quieter unit
with average SRNs of between 74dB and 80dB..


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THERMOSTAT
A temperature-measuring device used to control the operation of home comfort
systems to maintain a comfortable temperature within the house. Programmable
thermostats allow you to program different temperatures for different times of the
day.


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TON
The ton ratings you see here have nothing to do with the weight of the unit. In fact
a ton is simply 12,000 BTUs (see BTU definition on this page). A typical home
cooling/heating system uses heat pumps or air conditioners with a capacity of
between 1.5 and 5 tons.


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UPFLOW
A term used to describe the direction of airflow through a furnace. An upflow
furnace takes return air from the bottom, heats it, and then delivers the warm air
from the top.


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WATT/WATTS
Electrical power, also expressed as 'W'. For example, a 100W globe consumes
100 Watts of electrical power. The W in Watt is always uppercased, because it is
named after a person.


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ZONE/ZONING
A home may be divided into several different areas, or zones, to better control the
temperatures throughout the house. The process of dividing your home into
different zones is called zoning.
HVAC MECHANICAL SYSTEMS
TEL 647-404-4461
TEL: 905-605-HVAC (4822)
Email:
info@hvacmechanicalsystems.com
HVAC GLOSSARY OF TERMS
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