How Does Attic Insulation Affect your AC?

man working in attic

Many homeowners in Largo associate attic insulation with warmth when temperatures drop. The insulation in an attic actually helps to keep the house cool during hot weather as well. The same insulating properties that preserve heat can also work to keep it out. Attic insulation can affect an air conditioning system in a number of ways.

Slow the Transfer of Heat

The main way attic insulation affects air conditioning in a home is by slowing the transfer of heat between spaces. It also blocks the flow of air. The small pockets of air between pieces of blown-in fill or fiberglass batting will trap heat. Attics in homes in Largo can heat up quickly when exposed to the sun all day long. This heat will eventually start to transfer into the house if no insulation is present to stop it. This warms the air in the home and makes the space less comfortable even if the air conditioner is running. Insulation allows the conditioned air to remain cooler for a longer time.

Prevent Moisture Exchange

Moisture can be a problem in Largo homes. Moisture and humidity levels can increase in some attics. The moisture will travel downwards into the home where it can raise humidity levels. Higher humidity levels increase the perceived temperature in the house. High humidity can also create some problems with air conditioner coils over time especially if the system needs maintenance. Attic insulation blocks the flow of air that could carry humidity into the house. This increases comfort throughout the day.

Increase Cooling Efficiency

Attic insulation directly affects an air conditioner by increasing the cooling efficiency of the unit. The insulation helps to isolate the living areas of the home from the attic. Cool air cannot escape into the attic where it dissipates. The air conditioner can cool a much larger space in far less time when the attic is insulated. This increased efficiency will lower power bills during the hottest months of the year in Largo.

Extend the Life of the Air Conditioner

Good attic insulation can extend the life of an air conditioning system. Homes without attic insulation will be losing cool air constantly. This forces the air conditioner to work harder to maintain the set temperature. This could cause the air conditioner to cycle on and off frequently each day. The extra cycling can wear down the motor or compressor over time. The result is increased maintenance costs and a shorter overall lifespan for the system. Attic insulation prevents this from occurring.