Signs Your Air Conditioner Is Too Big
1. Short Cycling
Short cycling prevents your home from being able to effectively heat and cool. This leads to increased utility bills since your air conditioner is constantly having to start and stop. Short cycling also decreases the life expectancy of your air conditioner since the motor is being used more frequently to start up the system.
2. Inadequate Dehumidification
When your air conditioner is too big for your home it causes inadequate air flow. Temperatures drop rapidly which seems like a positive when in reality this only causes a small amount of air to move across the coil in efforts to extract the moisture from the air before being emitted again. This will result in a cold house, but a humid, swamp-like environment that only opens up the opportunity for mold and fungus to grow around the house.
3. Inconsistent Temperatures
Your AC has a sensor that stops air from cooling as soon as the temperature on your thermostat is reached. Since an oversized air conditioner reaches that temperature faster than it should, the rest of your home may not have gotten the same amount of cool air as the area surrounding the sensor.
How Do You Measure the Size of an Air Conditioner?
There are multiple factors to consider when calculating what size AC is suitable for your home. Some of these factors include the length, width, height and insulation condition of your home (you can find this information on a property tax statement). Air conditioner size is measured in the British Thermal Unit (BTU) as a unit of energy, measured in tons per hour. While most air conditioners range between one and five tons, the formula to find the perfect fit is easy once you understand the science behind it. One ton is the ability of your air conditioner to cool 12,000 BTUs in an hour which basically translates to: a 1-ton air conditioner can cool 12,000 pounds of water by one degree every hour.
Here is a chart that will provide you with a guide to the average air conditioner size in reference to BTU.
If that’s just too much information for you, then take advantage of this BTU calculator that calculates the amount of BTUs you will need in order to cool your home.
Troubleshooting the Size of Your Air Conditioner
Air conditioning runtime on a hot day will say a lot about the size of your air conditioner. If it is shutting off after 10-15 minutes and then starting up again shortly after to run for another 10-15 minutes then you have a problem. The average run time of your air conditioner on a hot day to properly dehumidify the air and distribute cool air evenly throughout your home should be about 45 minutes.
Expert AC Installation Means No Oversized Air Conditioner
Hiring a qualified AC professional you can trust plays a big role in the air quality and comfort of your home, which is why the technicians at Blair’s Air are the first choice for all your HVAC needs in the Tampa Bay area. Contact Blair’s Air today for your FREE service call!
Call 727-592-8479 to schedule your appointment.

Why You Should Maintain Your AC to Increase Its Lifespan
A functional air conditioning unit is a vital part of any home in the warm months, especially in Florida. You want your air conditioning system to last a long time to keep your home cool and comfortable. The key to increasing your unit’s lifespan is to keep up with...
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Get a Free Estimate
When it comes to your AC, preparation is key – and we want to help you be prepared without the headache. To get a free quote on your unit’s installation, reach out to us today.
Get a Free Estimate
When it comes to your AC, preparation is key – and we want to help you be prepared without the headache. To get a free quote on your unit’s installation, reach out to us today.
Satisfaction Guaranteed!

We had maintenance scheduled but upon returning to our home our upstairs unit was not working. We called Blairs and they responded asap! Scott is responsive, thorough and timely, Thank you Blair’s and Scott!!!!

Quick and professional service.
Mike took care problem and offered a better solution that cost less than expected. Personable and paid attention to detail. A/C up in running in a short period of time. 10 out of 10.

Prompt, courteous, friendly, accurate, . Arthur is the one I request each time. Arthur advises us as to only what we need/request, which is suitable to our budget/needs. As a land Developer, always will Request.
Where We Serve
Belleair Air Conditioning
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Blair’s Air Conditioning & Heating
PO Box 17461
Clearwater, Fl 33762
Lic# CAC1815307