AC Repair, Installation & Maintenance in O'Fallon, MO

When you’re in need of an air conditioning contractor in O’Fallon, MO, you need the team here at Swiss Air Heating & Cooling, LLC. We’re a trusted AC company in the area and can help with AC repairs, installation, and maintenance. All services we offer will be carried out to the very highest standard and to your complete satisfaction. When it comes to your comfort, we lead the way.

Whether you have an AC problem that is raising the temperature around your home, or you need help choosing a new air conditioning system, we’re here for you. Call our team today to find out more about our award-winning services and to arrange an appointment.

The Best For AC Repair in O’Fallon

No matter what fault you are experiencing, we offer dependable AC repair in O’Fallon. As a leading air conditioning contractor with years of experience, you can trust us to take care of any fault. We’re here for the warm air blowing instead of cool, the leaks, and the electrical faults that can take your system down completely.

Our team of NATE-certified technicians will keep you up to speed with progress every step of the way and get your system up and running again without delay. Get in touch with us today to arrange a home visit.

Here are just some of the cooling issues we can help you with:

Uneven temperature distribution in your home

Strange or loud noises coming from your HVAC system

Inconsistent cooling performance

Higher energy bills without an obvious explanation

Poor air quality, including dust, odors, or allergies

Frequent on/off cycling of your HVAC system

Visible leaks or moisture around your HVAC unit

An old or outdated HVAC system (typically over 10-15 years old)

Frequent breakdowns or the need for constant repairs

Thermostat issues, such as inaccurate temperature readings

We Excel in Air Conditioning Installation

Are you thinking about replacing your air conditioning system? Perhaps it’s started pushing up your energy costs or breaking down more and more often.

Whatever the issue, we’re here to recommend a new system that will give you years of dependable performance. We offer flexible on-approval finance options and a range of systems including mini-splits and packaged systems. We’ll give you advice on the best system to suit your needs perfectly. Call us to arrange AC installation in O’Fallon today.

Arrange AC Maintenance With the Best

For years now, we’ve been helping our customers with AC maintenance tune-ups that keep their systems working perfectly all through the summer season. Your AC works exceptionally hard during the hot summers and may need a little TLC to keep it in perfect condition. But AC maintenance also has other benefits.

A well-maintained system can help to keep your energy costs in check and can have a longer lifespan. We’ll also head off any potential problems with your system when we carry out a tune-up.

Problem & Solution

Problem	Solution
AC unit blowing warm air	We check refrigerant levels, inspect compressor operation, and repair leaks or component failure.
High energy bills from cooling system	We inspect for efficiency loss, recommend upgrades or maintenance, and offer ENERGY STAR® unit installations.
Unusual noises during operation	We inspect fan motors, compressors, and bearings to eliminate rattles, squeals, and grinding sounds.
Hot spots or inconsistent cooling	We assess ductwork, zoning issues, and thermostat calibration to restore balanced comfort.
Recurring AC breakdowns	We provide honest repair vs. replace recommendations and install reliable new AC systems if needed.

Problem

Solution

AC unit blowing warm air

We check refrigerant levels, inspect compressor operation, and repair leaks or component failure.

High energy bills from cooling system

We inspect for efficiency loss, recommend upgrades or maintenance, and offer ENERGY STAR® unit installations.

Unusual noises during operation

We inspect fan motors, compressors, and bearings to eliminate rattles, squeals, and grinding sounds.

Hot spots or inconsistent cooling

We assess ductwork, zoning issues, and thermostat calibration to restore balanced comfort.

Recurring AC breakdowns

We provide honest repair vs. replace recommendations and install reliable new AC systems if needed.

Frequently Asked Questions

If your AC is over 10 years old, needs frequent repairs, or struggles to cool your home, replacement may be the more cost-effective solution. We offer free estimates and honest recommendations based on your needs.

Our tune-ups include coil cleaning, refrigerant level checks, thermostat calibration, electrical testing, and filter inspection or replacement. Regular maintenance helps your AC run more efficiently and last longer.

Yes! We understand AC problems don’t wait for business hours. Our team is available for emergency repairs to get your system running again quickly.

We install leading brands like Lennox, Trane, Rheem, Goodman, and more. Our team will help you choose the best model for performance and energy savings.

Air Conditioning Contractor in O’Fallon, MO

The Best For AC Repair in O’Fallon

We Excel in Air Conditioning Installation

Arrange AC Maintenance With the Best

Problem & Solution

Frequently Asked Questions

Contact

Today

Business Address

Business Hours

Air Conditioning Contractor in O’Fallon, MO

The Best For AC Repair in O’Fallon

We Excel in Air Conditioning Installation

Arrange AC Maintenance With the Best

Problem & Solution

Frequently Asked Questions

How do I know if my AC needs to be repaired or replaced?

What is included in an AC maintenance tune-up?

Do you offer emergency AC repairs in O’Fallon?

What brands of AC units do you install?

Contact

Today