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Serving Gaston, Lincoln, Cleveland, and Mecklenburg Counties


We tend to see a lot of air conditioner installation and replacement calls this time of year, which only makes sense. A homeowner may feel that their existing air conditioner is too old to make it through another hot summer season without a serious breakdown. If you’ve decided to replace your old air conditioner with a new one, congratulations.

Doing so will allow you to save a lot of money in monthly bills on improved efficiency and ensure that your summer passes much more smoothly. And with a few weeks to go until summer, you have the time you need to make an informed choice before scheduling as timely installation.

The first and most important decision you should make regarding your new air conditioning system is its power levels: the amount of cooling power it puts out into your home. This is a far trickier equation than you might expect, and requires careful planning to get right. Why are power levels so important to a new air conditioner? Read on for the answers.


You can probably guess that an underpowered air conditioner won’t do the job you need it to. Imagine using a single window-box AC to cool an eight-room house. It will run all day and raise your monthly costs accordingly, all without approaching the ability to adequately cool the space.

Most people respond by looking for the most powerful air conditioner they can find to off-set this, which makes a certain amount of sense. After all, don’t you want your air conditioner to cool the whole home as quickly as possible? It’s an easy argument to accept and it feels logical. Unfortunately, going with an overpowered air conditioner can be almost as bad as going with an underpowered air conditioner.

Air conditioners use a great deal of power to start up and shut down, far more than they do simply running. For that reason, you want your air conditioner to run for at least 15 minutes at a clip is order to gain the maximum benefits. And oversized unit will engage in a process known as short cycling: running for a short amount of time and turning off, only to turn on again a brief time later as the heat of the day warms your home up. That increases the strain on the system and hastens the need for repair calls, as well as costing you a great deal in unnecessarily high cooling bills.


The best air conditioner for your home obeys what we like to call the Goldilocks Rule: neither too large nor too small, but just right. Getting the power levels right means addressing the specifics of your home. A good technician will perform a close inspection of your house before installing the new system. That includes obvious factors like square footage, but also things like sunlight exposure, double-sided windows and the presence of insulation. With those facts in mind, the technician can find the best power levels for your new system.

If you want to install a new air conditioner in your Charlotte, NC home, call FSM Heat & Air today!