What Size Air Conditioner Does My House Need?

May 10, 2021
ac unit in hayden, idaho

With air conditioning systems, it’s important that you get one that’s the right size for your home. Both oversized and undersized AC units will cause you many problems. But how do you know what the right-sized cooling system is for your residence?

How Is an AC System’s Power Measured?

Air conditioners are measured in BTUs (British Thermal Units) and tonnage. You need about one ton of power to cool about 600 square feet. However, you need a more powerful system in an old house since they’re drafty.

Manual J Calculation

When you hire an HVAC company to replace your air conditioner, it should perform a manual J calculation. Technicians will punch information about your property into software to determine which air conditioner is the right size for you. A manual J calculation is a scientific approach to determine air conditioner size rather than just eyeballing it.

Border Sheet Metal & Heating is an HVAC company in Hayden, ID, that replaces air conditioners. We always make sure our customers have one that’s the right size for their homes.

What Happens If My Air Conditioner Is Too Powerful?

An oversized AC unit will cost you a lot of money and make your house uncomfortable. It will rapidly turn on and off as it cools your home too quickly, which is not energy-efficient. It also won’t remove an adequate amount of humidity from your residence since it won’t run long enough to do so. Another problem is it will have a much shorter lifespan.

Can I Save Money With a Less Powerful Air Conditioner?

An air conditioner that’s too small for your home will have lower upfront costs. However, it will struggle to cool your house to your desired temperature. It will be running all the time, which will dramatically increase your energy bills.

Border Sheet Metal & Heating repairs, installs, and maintains heaters and air conditioners in Hayden, ID. Our other services include solar power, indoor air quality solutions, duct cleaning, ductwork, geothermal systems, garage heaters, gas fireplaces, new construction, and more. Get in touch with us today to schedule an appointment.

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