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What tonnage does my home need?
One ton of air conditioning is equivalent to 12,000 BTU. A BTU is a British Thermal Unit, and it is simply a measurement of heat.
One BTU is roughly equivalent to the amount of heat generated by burning one wooden kitchen match.
Simply put, this means that a one-ton air conditioner can remove 12,00 BTU from a space per hour.
To determine what size air conditioner your home needs you can call MARTIN'S to match the size of the unit to the BTU requirements for your house. A general rule of thumb for an average home is about 500 square feet per ton. Be sure to look for a properly sized system, bigger is definitely not better. A larger-than-necessary system will turn on and off more frequently and cost more to operate than a properly sized system.

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*Financing is provided with approved credit by Wells Fargo Financial National Bank, an Equal Housing Lender.