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Sizing your heating and air conditioning system for your Palm Beach Gardens, Florida, home will help you save money and improve comfort. Instead of basing the size only on the square footage of your home, your HVAC contractor should perform a Manual J calculation. This will help determine heat losses and gains for each room of your house under worst-case conditions.

The Air Conditioning Contractors of America created Manual J, also called Residential Load Calculation. Many professionals use specialized Manual J software that considers local temperatures, your home’s insulation, the amount of shade, the size of your windows, the number of people in your family and more. If you’re constructing a new home, you should also design your duct system according to Manual D, also called Residential Duct Design. This calculation uses many of the same variables as Manual J.

The right sizing will give your HVAC system better efficiency, lower installation costs, more humidity control and increased durability.

Better Efficiency

If your heater or air conditioner is too large, it’ll use more power and take up more space in your home. It’ll also start and stop often, which isn’t good for the system. And you’ll have to deal with extra noise from your system turning on and off. Your home could also easily become too hot or too cold. When you have an HVAC system that’s the right size, it’ll spend more time working before your thermostat shuts it off, keeping the temperature constant in your home for longer.

Lower Installation Cost

Installing a smaller HVAC system will be faster, easier and less expensive than choosing a larger model. That means you should use Manual J calculations to choose the smallest possible model for your home.

There’s no need to have a larger model installed in case you might need it someday. If you plan to add an addition to your home sometime in the future, install a separate system for it instead. That way, you can turn down the heating and air conditioning in unoccupied areas or zones to save money and energy. You also won’t waste any extra energy with a larger system before you renovate.

Better Humidity Control

If you have an air conditioner installed in your home that’s too large, you could feel hot and sweaty in summer. Since bigger HVAC systems start and stop often and don’t stay on as long, they can’t dehumidify your home well. This means your house will feel warmer even when the temperature is lower.

High humidity also encourages mold growth, which can cause allergy and asthma symptoms, headaches, eye irritation, fatigue, and other health problems. Mold also leads to unpleasant smells and damage to floors, walls, insulation, carpeting, and many other parts of your home. It can even grow in your ductwork, inside your air filter, and inside essential parts of your air conditioner. An air conditioner that’s the proper size will keep your indoor air quality high and the materials in your home in good condition.

Increased Durability

If your HVAC system is too small, it will work almost constantly, and your home will probably still have warm areas in summer and drafty spots in winter. Systems that are too large short cycle, or come on and turn off constantly. Both of these problems will force your system to work harder, shortening its life and causing expensive, inconvenient, and uncomfortable breakdowns. You may have to spend thousands of dollars on repairs or even pay for a new heating or air conditioning system years before a correctly sized system needs to be replaced.

Mechanical Air Conditioning is a family owned and operated Carrier Factory Authorized Dealer with more than 40 years of heating and air conditioning experience. We can help you install, maintain, and repair a variety of HVAC equipment, making sure your new system is the right size for your home. Call us anytime at 561-899-4587 for great service from our expert technicians.

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