Buying the Right Air Conditioning Unit for Your Home

August 26, 2017 Off By editeditor

Once again, the temperatures are rising to 90 degrees Fahrenheit or hotter. It’s time to turn on the air conditioning. If your air conditioner isn’t working, it’s probably time to consider calling air conditioning replacement Centennial CO.

Types of Air Conditioning

Room Air Conditioners have been available since 1922 for public spaces, like theaters and state buildings because of Willis Carrier’s patents and designs. In 1932, H.H. Schultz and J.Q. Sherman created a smaller very expensive version of the room air conditioner that could be placed on the window ledge. In 1947, Henry Galston, an engineer created the first affordable, even smaller air conditioning unit.

Central Air Conditioning is created when a system composed of a compressor, condenser and evaporator along with a duct system installed delivers cool air throughout the home. Central air conditioning can be in a split-system, which is in two-parts: a compressor and condenser in an outdoor metal cabinet and an evaporator in an indoor cabinet. The indoor cabinet can house the furnace or the heat pump. You’ll find the evaporator coil for the air conditioner in the supply duct of the furnace or heat pump.

Sizing the Central Air Conditioning Unit

The steps to take in determining what size central air conditioning unit you require to cool your home is to look at your ceiling heights, your insulation thickness and finally proper load calculations must be made. AC’s are available in different tonnages. A unit that is one ton can cool 12,000 British thermal units (BTU’s) in an hour. A one-ton unit with 12,000 BTUs can cool an area of 450 to 550 square feet. Central Air conditioning units for residential purposes start at 1.5 tons. It increases in size by .5 units until it reaches 5 tons. Over 5 tons is considered a commercial unit. If a home requires 6 tons to cool it sufficiently, the homeowner should install two 3-ton units.

Calculating the Load

To calculate the tonnage, get the home’s square footage. Multiply that number by 30 and then divide 12,000. The answer will tell you the proper tonnage needed for the air conditioning unit. If your calculations result in a fraction, round up to the nearest whole number. For instance, your calculations resulted in 4.75 tons. Rather than taking a chance with a 4.5 tonnage unit, round up to a 5-tonnage unit to insure your family is cool enough in the hottest part of summer.

The Wrong Sized Air Conditioner

If your air conditioning unit is too small, you will notice that it never shuts off or it will not keep the house cool. Your electric bills should reflect the fact that the air runs all day and be enormous. If you air conditioner is too large it will turn on and shut off quickly. Before you know it the hear will infiltrate your home again and you’ll have to turn your air on again. The constant turning on of your air conditioner will once again inflate your electric bill.

A wise homeowner will get the air conditioning unit sized by a professional, so there will be no excessive electricity usage. The right unit will give your family decades of comfort in the hottest summer months.