People may experience the inclination to buy an air conditioner that is too large for their home. The assumption is that a more powerful unit will cool their home faster and more effectively, however this is a misconception and a pit trap should anyone fall for it. An air conditioner that is too large literally has zero advantages over a properly sized unit and many drawbacks.
Higher Initial Cost: Not surprisingly, a bigger unit is going to cost more to purchase. It won’t be marginally cheaper either, these are expensive machines and “upgrading” to a larger unit will be hundreds of dollars extra.
Higher Utility Bills: The assumption is that it will be more powerful, and thus not have to run as long. This will translate into lower bills. Well, that is half right. AC units are at their most inefficient when they first turn on, and as they run they become more efficient. So, your mega-behemoth will be constantly starting and stopping. On top of this factor in that a larger unit will simply cost more to operate per minute. Go with the smaller, go green!
Wear and Tear: The start and stop situation will cause a massive amount of wear and tear for the unit, and lead to frequent repairs. The unit also will not last nearly as long as a properly sized unit.
Humidity: A secondary function of HVAC units is to remove humidity from the air inside the house. This, however, takes a bit of time, so the short burst of operation from a larger unit will not be able to remove the humidity. The result is a home environment that is cold and clammy.
In the End it’s just Not Worth it!
As you can see, it simply isn’t worth the extra money and headache a large unit will grant you. So if you are in the market for a brand new HVAC unit, block that old saying, “bigger is better” out of your head and listen to what the technician tells you. There’s no point in buying a machine just because it is big, have we leanred nothing from Tim Taylor of Home Improvement?