Can Oversized Ac Cause Mold

Another side effect of an oversized air conditioner is that your house won’t be properly dehumidified. … It takes a cycle between 20 and 30 minutes for any unit to be able to condition and dehumidify the air. As a result, you may notice mold growth develop on walls or ceilings.

What happens if your AC is oversized?

An oversized HVAC unit can make your home’s inside temperature uncomfortable. An HVAC system with excess capacity can heat or cool your home faster, but that speed often results in a couple of other issues. … As a result, you could end up with a number of hot or cold spots throughout your home.

Is it better to oversize or undersize AC?

Construction Advice: When sizing a cooling system for a home, keep in mind that it’s better to undersize than to oversize. A smaller system may run a bit more often, but it will cost less to operate. A larger system will cost more to operate, in addition to being inefficient, which will cost more money in the long run.