Choosing The Right Air Conditioning System For Your Home
Buyers Beware: Correctly Sized Air Conditioners Save Money!
When you buy a brand-new cooling and heating unit to change your old one - or if an entirely new system is being installed in your brand-new home - the installer needs to understand how big or, more importantly, how little the unit ought to be. In order to know precisely how big (or small) it needs to be, the professional needs to determine what does it cost? cooling and heating capability it should need to keep the occupants comfortable. This is called the load of the house.
The load of the home is partially dependent upon the house's square footage. Nevertheless, a real load computation surpasses that. An accurate 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 windows and doors (thermal effectiveness); number and arrangement of floors; and the environment.
Residential load computations make use of 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.
Determining the load using guidelines generally results in an over-sized heating and cooling system, resulting in an increased preliminary expense, increased monthly utility expenses, increased upkeep, and reduced devices life since the devices cycles off and on too regularly.
Who Does the Load Calculation?
The professional you decide to install your brand-new system needs to be able to perform these estimations. You may ask him for this service. If he doesn't want to do it, or says it isn't needed, you might wish to search for a different professional. In some locations, find out more here the regional energy will carry out a load computation - check with your local energy.
Why it's Important to Have the Right Sized System
Having the wrong-size heating-cooling system can result in multiple issues. Over-sizing your cooling system is not an advantage. Without entering too much detail, your cooling load consists of 2 parts:
- The temperature of the air, called the reasonable load.
- Moisture or 'humidity' in the air, called the latent load.
We've all heard the saying, 'It's not the heat; it's the humidity.' A cooling system that is too huge cools off the temperature very quickly, but it does not run long enough to remove sufficient wetness or 'humidity' from the air. The outcome is you feel cool but clammy. Many people then refuse the thermostat to make the ac system run longer, increasing the utility bill. In many cases, the insufficient moisture elimination resulting from over-sized cooling devices can result in mold growth and other kinds of moisture-related damage.
A correctly sized cooling system runs enough time to 'wring' wetness out of the air. This enables you to be comfy at a somewhat higher thermostat setting and allows you to conserve loan on your energy expense. It also looks after the 'mugginess' without making you feel too cold.
A/C systems are sized in 'lots,' which is a step of the rate at which they deliver cooling, not how much they weigh. One lots of cooling is equal to 12,000 BTU/H (British Thermal Units per hour), the rate of cooling needed to freeze one ton 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, instead of a system that supplies more than the required tonnage of cooling.