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Right Size HVAC

How to Choose the Right Size HVAC

March 31, 2017

When it comes time to replace your air conditioning and heating unit, one of the considerations is choosing the right size HVAC system for your home. Choosing the right size HVAC system is important for several reasons. The first being to avoid paying more for an HVAC system when its smaller and less expensive counterpart would have been a better fit for the job. Lost money isn’t the only repercussion, a system that is too large for a home won’t be able to adequately dehumidify the air, while a system that is too small will struggle to heat or cool a home quickly and efficiently. At Aero Designed Systems, we certainly won’t recommend the most expensive system just to increase the cost. Our ultimate goal is maximum efficiency and total home comfort at a reasonable cost.

In order to achieve that goal, an experienced HVAC technician should adhere to the U.S. Department of Energy Strategy Guidelines for HVAC Equipment Sizing when choosing the right size HVAC for your home. These guidelines break equipment selection into these three steps:

1. Determine accurate heating and cooling loads.
2. Select cooling equipment.
3. Select heating equipment.

The first step in devising which HVAC system will meet that goal involves a formula that your HVAC technician must solve. This formula is referred to as the “Manual J Calculation” and while tools can be found online to calculate the heating and cooling load of your home – we recommend that you leave it to a professional. Factors such as the dimensions and the building materials of the house are worked into the formula and can be quite complicated for the average homeowner.

Your HVAC technician will then use these results to select the appropriate sized cooling and heating equipment for your home. Of course, there is the option for add-ons such as a whole home air-purifier, humidifier or smart thermostat. These additions often recommend the PureAir Air Purification System for those that suffer from seasonal allergies like Cedar Fever or are concerned about air quality due to asthma. Whereas the Healthy Climate Whole-Home Dehumidifier is an ideal solution for homeowners in humid climates such as Texas. The iComfort S30® Smart Thermostat is best for families with hectic schedules that want to make energy savings a priority.

As experts, our role is to be upfront about our process and thoroughly explain why we recommend the products that we do. We’ll help you choose the right size HVAC for your house and the proper add-ons to ensure total home comfort for your family.

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