Stay Cool All Summer with New AC Installation in Oakville

Time to replace that 15-year-old AC that barely keeps up on hot days? We install new AC systems in St Louis homes and businesses every single week. Liberty’s technicians know how to match the right size system to your space, install it properly, and get it running efficiently. No cutting corners, no rushed jobs. We do it right the first time. Free estimates on all new AC installation in St Louis.

Complete Air Conditioning Installation Solutions

Here’s what most people don’t know about installing a new AC: the size of the unit matters way more than the brand. We’ve seen brand-new expensive Carrier systems that can’t keep a house cool because someone guessed at the size instead of actually measuring what the house needs. An AC that’s too big turns on, cools the house down fast, then shuts off. Sounds good, right? Wrong. It never runs long enough to pull humidity out of the air, so your house feels sticky even when it’s cool. An AC that’s too small just runs all day trying to catch up and never quite gets there.

St. Louis summers are brutal. When it’s 95 degrees outside with crazy humidity for two weeks straight, your AC has to work harder than systems in other parts of the country. If it wasn’t installed right, problems show up fast. Maybe the guy who installed it didn’t add enough refrigerant. Maybe he didn’t seal the ductwork and all your cold air is leaking into the attic. Maybe he didn’t slope the drain line correctly and now water backs up inside your house.

We fix AC systems every week that are only a few years old but were installed wrong from the start. The equipment is fine—the installation was garbage. We actually measure your house to figure out what size system you need. We charge the refrigerant correctly. We test everything before we leave. Your new AC should work right from day one, not cause problems six months later. Understanding proper air conditioning installation standards helps ensure your system runs efficiently for years.

Our AC Installation Services

Emergency AC Installation St. Louis

Your AC died on Friday afternoon and every company you called can’t come out until Tuesday. We get it—that’s the worst. We actually keep units in stock specifically for emergencies like this. Most times we can get a new system installed same day or the next morning. You shouldn’t have to spend a whole weekend sweating in your house waiting for someone to show up.

Heat Pump Installation & Replacement

Heat pumps do both heating and cooling with one system. Instead of having a furnace for winter and an AC for summer, you get one unit that handles everything. They pull heat out of your house in summer and pull heat from outside air in winter. Sounds weird, but it works and saves money on utility bills. Learn more about our professional heat pump installation services.

Emergency Heat Pump Installation & Replacement

Heat pump died and now you have no heating OR cooling? We stock heat pump systems so we can replace failed units fast. You’re not waiting a week for equipment to get ordered and shipped. We’ll get you back up and running quick.

Get Professional AC Installation

Liberty Heating Cooling & Plumbing has been installing AC systems in St. Louis for 27 years. We’ve seen what happens when installations are done wrong—systems that never cool properly, equipment that breaks down within a few years, homeowners stuck with expensive mistakes. Our techs actually measure your house to size equipment correctly instead of guessing. We install according to manufacturer specs, not shortcuts that save time but cause problems later. Everything gets tested before we leave.

Call (314) 600-2202 for AC installation throughout St. Louis. We’re available 24/7 for emergencies and offer free estimates on new systems.