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High Efficiency Gas Furnaces
 What is “high efficiency”?
Simply put, the more energy a furnace keeps in your home for your comfort is efficiency. A standard furnace being built right now is 78%
efficient (the minimum standard). A high efficiency furnace is one that is 90% efficient or higher.
How does it work?
A typical older furnace, or current standard furnace, takes air from inside your
home, combines it with natural gas, and burns it. The hot exhaust is
passed though a series of metal passages, called the heat exchanger. The
exhaust goes up the chimney, and can be seen coming out of your house.
The water vapor in the hot exhaust is the “smoke” seen on those cold
winter days coming from your chimney. A Carrier high efficient furnace takes its air for combustion (burning) from outside, keeping your conditioned air in the house. Then it
combines that air with natural gas, and burns it. The hot exhaust that goes up the chimney on a standard furnace are passed through a
second series of passages (heat exchanger), and then sent to the outdoors. This keeps approximately 12-16% more heat from the burning
gas available to heat your home. The exhaust is too cool to rise though a normal chimney, so these units are vented in PVC.
What else can make me more comfortable?
Proper humidity levels (see
Humidifiers),
zoned heating, and integrated control systems (Carrier’s Infinity
Control, for example) can
all help make a home more comfortable. You also should treat the air in the house to remove the harmful particles that can live in a
home. See the
Indoor Air Quality section for more.
 Carrier’s Infinity Furnace
Carrier’s top furnace is the Infinity. It is up to 96% efficient on its gas use, plus it is very electrically efficient. In fact, it has
the lowest total operating cost of any gas furnace being made today.
It also offers superior comfort. It uses two stages of heat, to keep the home warm, without the usual dips and rises in temperature.
Combined with an intelligent blower system, that only deliver the amount of air needed, most homes find the temperature rarely dips
below the 1 degree in any area of the home.
The Infinity also has Carrier exclusive ComfortHeat™ technology, for the ultimate in performance, comfort and home heating.
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 Optional
air cleaner cabinet – allows for the easy and convenient addition of a Carrier high-efficiency air filter for enhanced air quality.
- Burner ignition – as one of the most dependable systems available, it replaces pilot lights and reduces utility consumption.
- Two-stage gas valve – provides two heating capacities. The low capacity works during milder days while the high capacity engages
during colder temperatures.
- Variable-speed blower motor – ensures consistent airflow and temperature maintenance, helping to keep rooms more comfortable while improving air quality.
- Blocked-vent safeguard - helps protect against exhaust gasses escaping into your living area.
- Infinity™ furnace control board – allows the unit to connect to an Infinity™
Control for the ultimate comfort control. Smart electronics
keep track of previous cycles and allow the system to automatically adjust the heating and cooling stages for the best comfort and
energy efficiency.
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quality service to our customers with tireless dedication to excellence, the
highest quality workmanship and the most reliable products so that we meet or
exceed our customer’s expectations.
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HVAC Tip: When purchasing a new heating system, it is important to address
all of the comfort issues. One piece of equipment may not be able to solve all problems on its own.
We recommend purchasing the highest efficient furnace and air conditioner when living in the home more then 5 years.
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D & M Heating
100% Satisfaction Guarantee
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