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New central air conditioning systems add value to homes while providing you and your family with comfort in warm weather. Today the central air conditioning market has a large selection of equipment. There are several levels of energy saving models to choose from.


Most manufacturers have a several levels of SEER (Seasonal Energy Efficiency Ratio). SEER must be understood to be able to make an informed purchase. 13 SEER is now the legal minimum, while a few years ago there were not any minimum standards. This means that most older systems were real energy hogs,  with levels as low as 5 SEER. The higher the number the more efficient the system. It is said that for each point in SEER that you go up you can save as much as 10% in electricity.

As of January 2006 the Government mandated a new manufacturing minimum standard of 13 seer.
This has caused most prices to go up, so price quotes from two or more years ago have gone up from about $300 to $1000 depending on the size system.

  • Some differences of these systems are:

There are 3 main items that use the electricity in a central air conditioning system,

1. The Compressor

2. The Condenser Fan Motor

3. The Air Handler Fan Motor.

A 13 SEER may have a new design scroll compressor, these work similar to a jet engine inside, whereas the 10 and older units worked with pistons like a car engine. The physical size of the outdoor unit will be larger, this means it has more coil surface area, and will cool off the refrigerant (Freon/Puron) better. It may even have a high efficiency fan motor, or may require that the air handler in the attic be larger.

As you move up the ladder of SEER on any brand there will be other options they include to get higher efficiency.

Some of the major companies have gone to a new refrigerant Puron, this is because in a few years a law will come into effect, that companies can no longer make machines that use the old standard Freon 22. So this is another factor to consider. Freon 22 gas itself has a date of 2015 to stop manufacturing. Some time after that systems needing a recharge may need conversions to new type refrigerants.

We advise our customers to purchase systems between a 13 and 15 SEER These systems have longer warranties, save energy and are cost effective to install.

Systems over 15 SEER may have such items such as special 2 stage compressors, natural gas powered that actually generate electricity for the motors to run and a host of other items. If you want to learn more about the individual brands and efficiencies visit the web sites of the system manufacturers to see what they offer.

Our team is capable of installing any of the systems on the market today. If you search the web you will find that one of the biggest energy saving factors is the installation itself.

Poorly installed systems of the highest SEER rating may only net the customer the savings of a lesser unit. Rest assured that our team at Northern Air can and will install your system with the utmost of care and engineering to provide you with the quality & economy expected from your purchase.

We are a full service shop, providing the highest quality installations & service.