Choosing The Right Heating and Cooling System For Your Home

Buyers Beware: Correctly Sized Air Conditioners Save Money!


When you purchase a new cooling and heating system to change your old one - or if a totally new system is being installed in your new house - the installer has to know how big or, more importantly, how little the system must be. In order to know exactly how huge (or little) it ought to be, the contractor has to compute just how much cooling and heating capacity it need to need to keep the residents comfortable. This is called the load of the house.

The load of the home is partially dependent upon the house's square video. However, a real load computation goes beyond that. A precise load determination includes structure construction; orientation to the sun; 'R' value of the insulation; number, size, and positioning of rooms; number, size, and positioning of windows and doors; 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 been digital, so they're not as time-consuming as they remained in the past.

Determining the load by utilizing general rules often causes an over-sized cooling and heating system, leading to an increased initial cost, increased regular monthly energy costs, increased maintenance, and get more info shortened devices life due to the fact that the equipment cycles off and on too frequently.

Who Does the Load Calculation?
The professional you opt to install your brand-new system needs to be able to perform these calculations. You may ask him for this service. If he doesn't want to do it, or says it isn't necessary, you may want to look for a different contractor. In some areas, the regional energy will carry out a load estimation - talk to your local utility.

Why it's Important to Have the Right Sized System
Having the wrong-size heating-cooling system can lead to numerous issues. Over-sizing your cooling system is not an advantage. Without entering into too much detail, your cooling load includes two parts:

  • The temperature of the air, called the reasonable load.

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

We've all heard the stating, 'It's not the heat; it's the humidity.' A cooling system that is too huge cools down the temperature level extremely quickly, however it does not run long enough to remove enough moisture or 'humidity' from the air. The outcome is you feel cool but clammy. Many people then more info decline the thermostat to make the air conditioning system run longer, increasing the energy bill. In many cases, the inadequate wetness elimination resulting 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 allows you to be comfy at a somewhat see more higher thermostat setting and enables you to conserve money on your utility costs. It also takes care of the 'mugginess' without making you feel too cold.

Cooling systems are sized in 'tons,' which is a step of the rate at which they provide cooling, not how much they weigh. One ton of cooling is equal 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 provides a little less than the needed tonnage of cooling, rather than a system that supplies more than the required tonnage of cooling.

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