Consider installing ENERGY STAR qualified heating and cooling equipment



Fewer and fewer furnaces have a pilot light—a flame that burns continuously, awaiting the next command to ignite the burners. Furnaces with intermittent, direct spark, or hot-surface ignition do away with the constant pilot light in various ways. That increases efficiency and is usually reflected in a furnace’s higher AFUE rating.


This feature uses a number of thermostats, a sophisticated central controller, and a series of dampers that control airflow to deliver different amounts of heating or cooling to different parts of the home. The larger the home, as a rule, the more useful zoning is.

Switching to a more energy-efficient system can save you big!  You might be surprised at which areas of your home use the most energy. Heating and cooling use the most energy in an average household – more than 40 percent of your monthly bill comes from the energy needed to heat and cool your home.


Each brand of furnace offers a similar array of key features, depending on price. The furnace features most often highlighted in product literature and sales pitches are generally the ones found on the higher-efficiency models, but some manufacturers also offer them on premium versions of low-efficiency furnaces.

Central Air Conditioning Types
If you’re upgrading your central air, don’t assume you should buy the same-sized system. Any changes you’ve made to improve your home’s energy efficiency, such as upgrading your windows or adding insulation, can reduce your cooling needs. On the other hand, if you’ve added rooms, you might need more cooling.

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Split ductless systems have an outside condenser and one to four indoor blower units mounted high on the wall. Tubing connects these parts and circulates refrigerant. The tubing, along with an electric and drain line, is run through about a 3-inch hole hidden behind each indoor unit. Each indoor unit cools the room in which it’s installed and has its own remote control. Split ductless systems need no ductwork, making them easier to add to homes without existing ducts. They can be more expensive than window air conditioners, and professional installation is recommended.



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The most common type of central air conditioning is the split system, which features a condenser outside the home, and a fan-and-coil system inside, connected by pipes carrying refrigerant. However, not every home can accommodate the ductwork needed to install central air, and a split ductless system is an option.

Central air-conditioning systems use ducts to distribute cooled air throughout the house. In a “split system,” the most common design, refrigerant circulates between an indoor coil and a matching outdoor condenser with compressor. The refrigerant cools the air, dehumidifying it in the process; a blower circulates air through ducts throughout the house. A variation is the “heat pump,” a type of system that functions as heater and cooler.


Indian Trail Air & Heat, offers Preventive Maintenance once in the Fall & once in the Spring. As much as half of the energy used in your home goes to heating and cooling. So making smart decisions about your home's heating, ventilating, and air conditioning (HVAC) system can have a big effect on your utility bills — and your comfort. Take these steps to increase the efficiency of your heating and cooling system. Consider installing ENERGY STAR qualified heating and cooling equipment

If your HVAC equipment is more than 10 years old or not keeping your house comfortable, have it evaluated by a professional HVAC contractor. If it is not performing efficiently or needs upgrading,consider replacing it with a unit that has earned the ENERGY STAR. Depending on where you live, replacing your old heating and cooling equipment with ENERGY STAR qualified equipment can cut your annual energy bill by more than $115. But before you invest in a new HVAC system, make sure that you have addressed the big air leaks in your house and the duct system. Sometimes, these are the real sources of problems rather than your HVAC equipment.

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VARIABLE speed blowers

These can deliver air slower, while often making less noise, when less heat is needed. That produces fewer drafts and uncomfortable swings in temperature.


Available on some furnaces that have a variable-speed blower, this feature can increase efficiency and comfort by automatically varying the amount of heat the furnace delivers, usually between two levels. The furnace can thus deliver heat more continuously than could one with a fixed heat output.


Fitting a furnace with an electrostatic filter, which uses an electrical charge to help trap particles, or a high-efficiency particulate-arresting (HEPA) filter can reduce the amount of dust blown through the heating system. That might help people with asthma or other chronic lung diseases, but there’s little evidence that other people need such filtration.

  • Heat Exchanger – Inspected for cracks & deterioration.  Heat exchangers can develop cracks with age. If they exist, there is a risk of serious illness from the toxic fumes emitted.
  • Burners – Removed & cleaned if necessary.  Dirty burners can cause poor combustion, soot, condensation, and will shorten the life of the furnace. You pay for useful heat that goes up the chimney instead of going into your house.
  • Fan Switch – Checked & adjusted. A fan switch that is not properly adjusted can waste energy and cause nuisance fan cycling.
  • Pilot & Pilot Assembly – Cleaned & adjusted as necessary. Weak or dirty pilots can easily be extinguished causing the furnace to shut down.
  • Safety Controls – Operationally inspected. Safety controls that do not operate can cause dangerous problems.
  • Gas Line – Leak checked from the furnace shut off valve to the burners. Undetected gas leaks are dangerous.
  • Combustion Air – Openings will be checked. Blocked or restricted combustion air openings can be dangerous.
  • Flue Pipe – Inspected. Flue pipe corrosion or leaks are dangerous.Temperatures & Performance –Recorded.  An accurate record of vital data can indicate potential problems that can be eliminated.
  • Panels – Secure all panels. Loose panels can increase operating costs and cause either a shutdown or a dangerous condition.
  • Controls & Safeties – Inspected & tested. Controls and safeties that do not function properly can increase operation cost and cause other components to fail.
  • Lubrication – Application to motors & bearings. Improperly lubricated rotating equipment will eventually fail.
    Belts & Pulleys – Inspected & adjusted. Loose belts and worn pulleys decrease air flow, increase operating costs and shorten the compressor’s life. Belts crack and break with age.
  • Air Filter – Replaced at customer’s option. A restricted air filter can cause your air conditioning unit to waste energy and shorten the compressor’s life.
  • Voltage & Amp – Draw of the blower motor, compressor & condenser fan motors checked & recorded. Improper voltage and amp draw increase operating costs and can shorten the life of any motor.
  • Thermostat – Checked & calibrated. Improperly calibrated thermostats cause the unit to run longer than necessary. Every degree your air conditioner operates below 78 degrees can add 5%-8% to the cost of cooling.