Air Conditioner with fan and tools

The Positives and Negatives of Installing an AC System in Older Homes

Many individuals purchase an older home because of its charm, high-quality construction, history or elegant architectural features. Unfortunately, air conditioning didn’t become popular until the 1970s. Most older homes weren’t built with the ductwork necessary for AC. That doesn’t mean you’re out of luck residing in an older home when temperatures spike. An AC system […]

Call (833) 381-7008Book Now

20+
Years in Tampa Bay
7,600+
Google reviews
4.8★
Customer rating
Home comfort tipsFrom the Cornerstone team
Tampa Bay Times People's Choice Best of the Best 2026 — Gold
Get Started Now

Fill out this form or call (833) 381-7008 to get started.

Request received

Thank you!

A member of our team will call you shortly. We’re Fair. Fast. Friendly. — and glad you reached out.

Call (833) 381-7008
BBB A rated
  • 20+ years serving Tampa Bay
  • Background-checked technicians
  • Financing available
  • Call 24/7 for Service

Many individuals purchase an older home because of its charm, high-quality construction, history or elegant architectural features. Unfortunately, air conditioning didn’t become popular until the 1970s. Most older homes weren’t built with the ductwork necessary for AC. That doesn’t mean you’re out of luck residing in an older home when temperatures spike. An AC system can be professionally installed in an older home. However, there could be drawbacks. Let’s explore the pros and cons.

Older Homes’ AC Challenges

Only HVAC professionals can evaluate your home and recommend an AC system to keep your interior spaces cool and comfortable. Generally, there are specific factors that could complicate the process. For example, let’s look at your home’s insulation. Years ago, most homes had little insulation, especially in the attic. An under-insulated house means you may find several hot spots throughout your home when the hot summer air comes in.

Gaps and Cracks Cause Issues

Another potential problem is the multiple gaps/cracks around windows and doors. These air leaks require professional air sealing before air conditioning can do its job.

Ductwork or the Lack of It

Another challenge is outdated ductwork or the lack of any ductwork in an older house. Old ductwork can make it difficult to control the temperature.

First, Air Sealing and Insulation

An expert HVAC team can deliver cool AC into your home if these professionals air seal and add insulation before they install the system. If you don’t want your conditioned air escaping from your home, these two upgrades are key.

The Perfect Solutions: You Have Options

It depends on the old house, but if you think putting up several air conditioning box units will do the trick, that’s OK, but not ideal. Box units are a temporary fix and can waste lots of energy.

One solution to consider is a mini-split heat pump that allows you to control the temperature in each room individually. The system is highly efficient and, best of all, one heat pump system will replace your furnace, air conditioner, dehumidifier and air filter. You’re getting a heating and cooling system under one umbrella. A mini-split heat pump system can be pricey and not something not advisable to DIY alone.

A central air system is another possibility you can have installed in an old home, as long as you have the proper ductwork updated. This AC system can be more costly than a mini-split system.

You don’t have to brave the heat this summer on your own. If you’re living in Tampa, FL and seeking cool comfort, contact our HVAC team at Cornerstone Pros for air conditioning services.

Contact Cornerstone Pros

Fair. Fast. Friendly.

Office hours 8am-5pm Mon-Fri. Call 24/7. Nights and weekend emergency service.

Book Online Now