Choosing The Right Air Conditioning System For Your Home

Buyers Beware: Correctly Sized Air Conditioners Save Money!


When you purchase a brand-new cooling and heating unit to replace your old one - or if a totally new system is being installed in your brand-new house - the installer has to know how big or, more importantly, how small the unit should be. In order to understand exactly how big (or small) it should be, the contractor has to calculate what does it cost? cooling and heating capability it must need to keep the occupants comfy. This is called the load of the house.

The load of the house is partly dependent upon the home's square video. However, a real load calculation exceeds that. A precise load decision includes structure construction; orientation to the sun; 'R' value of the insulation; number, size, and positioning of spaces; number, size, and placement of doors and windows; kinds of doors and windows (thermal effectiveness); number and arrangement of floors; and the climate.

Residential load calculations utilize mathematical solutions that take all these variables into consideration. They have actually been computerized, so they're not as time-consuming as they remained in the past.

Figuring out the load using guidelines generally leads to an over-sized heating and cooling system, resulting in an increased preliminary cost, increased regular monthly energy costs, increased upkeep, visit our blog and reduced equipment life because the equipment cycles off and on too regularly.

Who Does the Load Calculation?
The professional you choose to install your brand-new system ought to have the ability to perform these computations. You may ask him for this service. If he does not wish to do it, or states it isn't really required, you may want to look for a different professional. In some areas, the regional utility will carry out a load calculation - talk to your regional utility.

Why it's Important to Have the Right Sized System
Having the wrong-size heating-cooling system can cause several issues. Over-sizing your cooling system is not an advantage. Without entering excessive information, your cooling load consists of two parts:

  • The temperature level of the air, called the sensible load.

  • Wetness or 'humidity' in the air, called the latent load.

We've all heard the how a well maintained A/C system can save you money stating, 'It's not the heat; it's the humidity.' A cooling system that is too huge cools off the temperature extremely quickly, however it does not run long website enough to eliminate sufficient wetness or 'humidity' from the air. The result is you feel cool however clammy. Lots of people then decline the thermostat to make the air conditioning system run longer, increasing the utility costs. Sometimes, the inadequate moisture removal arising from over-sized cooling devices can lead to mold development and other types of moisture-related damage.

A properly sized cooling system runs long enough to 'wring' moisture from the air. This permits you to be comfortable at a slightly greater thermostat setting and allows you to save cash on your energy bill. It also looks after the 'mugginess' without making you feel too cold.

Cooling systems are sized in 'loads,' which is a step of the rate at which they provide cooling, not how much they weigh. One ton of cooling amounts to 12,000 BTU/H (British Thermal Units per hour), the rate of cooling needed to freeze one lots of ice at 32F in one day.

It is much better to have a system that supplies a little less than the required tonnage of cooling, rather than a system that supplies more than the needed tonnage of cooling.

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