Why is my AC running but not cooling?

This can be caused by airflow restrictions, refrigerant issues, dirty components, or failing parts that require professional diagnosis.

How long does AC repair usually take?

Repair time depends on the issue found during diagnosis. Some repairs are completed quickly, while others require additional parts or testing.

Should I turn my AC off if it’s not working properly?

If the system is making unusual noises, leaking, or blowing warm air, turning it off can help prevent further damage until service is performed.

Home » AC Repair

AC Repair in Florissant, MO

Professional AC Repairs When Florissant Needs Them Most

In Florissant, when the sweltering heat hits and your AC system falters, ACE Service Experts is here to provide swift and professional air conditioning system repairs. Our team of skilled technicians is well-equipped to diagnose and resolve a wide range of AC issues, ensuring your comfort is restored promptly. We understand that AC breakdowns can occur at the most inconvenient times, which is why we offer timely and reliable repairs, keeping your indoor environment cool and comfortable.

With our commitment to excellence and customer satisfaction, you can trust us to deliver top-tier AC repairs when you need them most. For quality service from an air conditioning contractor for Florissant area jobs, you can count on us. For AC maintenance, repairs, replacement, and more, give us a call. Contact ACE Service Experts for AC repairs in Florissant.

Experts Repairing Broken Down AC Units

At ACE Service Experts, we take pride in being the go-to experts for repairing broken-down AC units. When your cooling system encounters issues, our seasoned technicians step in with a wealth of knowledge and experience to swiftly diagnose and resolve the problem. We understand the discomfort and inconvenience a malfunctioning AC unit can bring, especially during Florissant’s scorching summers. That’s why we prioritize timely and efficient repairs, ensuring your AC is back in action, delivering the comfort and coolness you need. Trust our expertise to revive your AC unit, making your indoor environment pleasant and comfortable once again.

When Florissant Needs AC Repair, Here’s What We Do First

Most AC problems aren’t “mysteries”—they’re patterns. The key is checking the right things in the right order so you don’t waste time (or money) chasing guesses.

During an AC repair visit, our technicians focus on two goals:

Restore cooling quickly and safely
Spot issues that could affect efficiency or occupant safety, then give you clear, well-informed options to choose from

If your system is struggling, a professional diagnosis is the fastest way to get certainty—especially when multiple symptoms show up at once.

Reliable AC Repair for Homeowners

Air Conditioner Not Cooling: The Most Common Reasons

If the thermostat is set correctly but the home still won’t cool down, one of these is often the culprit:

RESTRICTED AIRFLOW (DIRTY FILTER, CLOGGED COIL, OR BLOWER ISSUES)

Low airflow can make rooms feel muggy and warm—even if the system is technically running. It can also contribute to coil icing, extra wear, and indoor air quality concerns.

ELECTRICAL OR CONTROL PROBLEMS

Capacitors, contactors, relays, wiring connections, or safety controls can fail over time. When they do, you might get:

A system that won’t start
A unit that starts and stops quickly
A “humming” outdoor unit that doesn’t fully run

REFRIGERANT-RELATED ISSUES

Low refrigerant charge or leak symptoms can include reduced cooling, longer run times, and sometimes ice buildup. Learn more about refrigerant regulations and safety from the EPA.

DRAIN AND MOISTURE PROBLEMS:

A clogged condensate drain can trigger system shutoffs on some setups and can contribute to water issues around the unit.

When you call us for AC Repair in Florissant, MO, we work through these possibilities systematically—so the fix fits the problem, not the other way around.

SIGNS YOU NEED AC REPAIR (DON’T WAIT FOR A TOTAL BREAKDOWN)

Some warning signs are easy to ignore—until the system quits at the worst possible time.

Here are common signs your AC needs attention:

Reduced cooling efficiency
Unusual noises
Strange odors
Frequent cycling (turning on/off more than normal)

If you’re seeing any of these, getting it checked early can help prevent additional damage and keep repair decisions simple.

CENTRAL AIR CONDITIONING REPAIR: PROBLEMS WE FIX EVERY WEEK

Every home is different, but the failures tend to cluster around a few components. Our AC repair service commonly includes diagnosis and repair involving things like:

Capacitors
Relays and contactors
Thermostat and control issues
Condenser and evaporator coil concerns
Blower motor problems
Refrigerant charge checks
Electrical connections and safety device checks
Condensate drain issues

Even if you’re not sure what’s wrong, you don’t need to be—just tell us what the system is (or isn’t) doing, and we’ll take it from there.

EMERGENCY AC REPAIR IN FLORISSANT: WHAT TO DO WHILE YOU WAIT

If the AC is down and the house is heating up, here are safe, quick checks that can help (and they won’t interfere with a professional repair visit):

Confirm thermostat settings (cool mode, temperature set below room temp)
Check the air filter (a clogged filter can severely restrict airflow)—proper air filter maintenance is essential for system performance.
Check breakers (a tripped breaker can stop the system)
Make sure supply vents are open and not blocked by furniture.

If those don’t solve it, the next step is a proper diagnosis. Continuing to run a struggling system can sometimes make a smaller issue turn into a bigger repair.

HVAC TROUBLESHOOTING WITHOUT THE GUESSWORK: OUR REPAIR PROCESS

A good repair feels calm—not chaotic. Here’s what you can expect when you schedule service:

1) LISTEN FIRST, INSPECT SECOND

You tell us what you’ve noticed—warm air, weak airflow, short cycling, noise changes, odd odors, or rising energy bills. Then we verify symptoms and start testing.

2) PINPOINT THE FAILURE AND THE “WHY”

Fixing a part is easy. Knowing why it failed helps reduce repeat issues. We look for contributing factors like airflow restrictions, electrical stress, or maintenance gaps.

3) GIVE CLEAR REPAIR OPTIONS

Our technicians are trained to resolve the immediate problem and also identify potential concerns that could impact efficiency or safety. You’ll get practical options and information so you can decide what makes sense for your home and budget.

4) MAKE THE REPAIR AND VERIFY PERFORMANCE

Once you approve the work, we complete the repair and confirm operation—cooling performance, cycling behavior, and system response.

SHOULD YOU REPAIR OR REPLACE YOUR AC UNIT?

This is one of the most searched questions for a reason. The honest answer depends on:

Age of the system
Extent of the damage
Efficiency
How often have you needed repairs recently?

Sometimes the repair is absolutely the right move. For older systems with frequent issues, replacement can be the better long-term value. Our technicians can walk you through the pros and cons based on what we find—no pressure, just clarity.

AC MAINTENANCE IN FLORISSANT: THE BEST WAY TO AVOID BREAKDOWNS

Repairs happen—but many breakdowns are preventable with regular maintenance. Maintenance helps with:

Cleaner coils and better airflow
More stable system operation
Fewer surprise failures during heat waves
Better efficiency (which can reduce monthly cooling costs)

ACE Service Experts offers the ACE Home Care Club, with Silver, Gold, and Platinum packages designed around spring/fall visits, inspection reporting, priority service, and repair discounts. The plans include details like a multi-point heating check and an AC check, along with member benefits (like waived trip fees for service calls and percentage discounts on repair invoices).

FINANCING OPTIONS FOR AC REPAIRS AND COOLING UPGRADES

Some repairs and most replacements aren’t planned expenses. That’s why our site lists financing available for customers who prefer to spread costs over time. If financing would help, just ask when you call—we’ll point you to the right place to get started.

LOCAL, TRUSTED SERVICE: WHO WE HELP AROUND FLORISSANT

ACE Service Experts is based in Florissant, MO, and has served Florissant, St. Louis County, St. Louis City, and St. Charles County for 13 years.

Whether your AC problem is happening in the middle of a heat wave or it’s been slowly getting worse over time, our job is to make the next step simple: find the issue, explain your options, and get your comfort back.

SCHEDULE AC REPAIR IN FLORISSANT, MO TODAY

If your AC is struggling—or you just want answers before it becomes an emergency—call ACE Service Experts for AC Repair in Florissant, MO. One call gets you a real diagnosis, clear repair options, and a path back to a comfortable home.

Call (314) 328-8112 or request service online through our contact page.

Frequently Asked AC Repairs Questions

Common signs of AC issues include reduced cooling efficiency, unusual noises, strange odors, and frequent cycling. If you notice any of these signs, it’s advisable to schedule a professional inspection and repairs with ACE Service Experts to prevent further damage.

Whether to repair or replace your AC unit depends on factors like its age, the extent of damage, and efficiency. In some cases, repairs may be cost-effective, but for older units with frequent issues, a replacement might offer long-term savings and improved efficiency. Our technicians can provide guidance tailored to your specific situation.

Common causes include airflow restrictions (dirty filter or coil), refrigerant-related issues, or failing electrical components that prevent the system from operating at full capacity. A diagnostic identifies which one applies to your system.

Reduced cooling efficiency, unusual noises, strange odors, and frequent cycling are common signs. If you notice these, scheduling service early can help prevent bigger damage.

A common approach is seasonal maintenance—typically spring (before heavy cooling demand) and fall (before heating season). Our Home Care Club is structured around spring/fall visits.

Many repairs are completed the same day, but timing depends on what’s wrong and whether parts are needed. The first step is always a proper diagnosis so the repair is accurate—not a guess.

Current HVAC Specials and Service Discounts:

ONLY