Think about it. You know how miserably humid it can get outside in the summer. That air gets into your home through infiltration (topic for another conversation) and through simple everyday things like opening the door. Add things you normally do inside your house to the humidity equation, like cooking, showering, and drying clothes, and you have most of the ingredients for a rain forest! Most folks don’t have a free-standing dehumidifier sitting in the kitchen or the livingroom, so how is all that moisture getting out? The air conditioner is how.
As we stated previously, one of the jobs of your air conditioner is to remove humidity, yet an air conditioner turns on and off based on temperature. If the unit is too large for the space it will cycle on and off too quickly to remove the humidity. Pretty soon you’re uncomfortable but you’re not sure why. Clothes and bedding don’t smell as fresh. Papers are starting to wrinkle up a little. Wood furniture is swelling and floors start to buckle. The shower never gets dry. Maybe even spots of mold start to form. These are all pretty good indicators that the humidity level is too high in your house and your air conditioner might be the reason why.
The other bad thing about an over-sized piece of equipment is that your power bills will be higher than they need to be.Your air conditioner consumes the most power during the time it’s physically turning on. It is much more efficient for it to run continuously than it is for it to turn on and off (this is part of the science behind high-efficiency equipment.) Plus all that turning on and off is harder on the motor causing premature wear and failure.
Of course getting a unit that’s too small isn’t the right answer either. If it’s too small, it runs forever at high speed and still can’t get your home cooled down to the thermostat setting or get all the humidity out. It’ll work really, really hard while it tries though. And all the while your electric meter is spinning like a top and your power bill climbs.
The most important thing you need to look at is the color. JUST KIDDING! Color isn’t even on the list of the top 10 things you need to consider. The important things you need to compare when you are shopping for a new system are the following: