Serving Lake County Since 1959 • Licensed & Insured HVAC Technicians • Emergency Service Available • Financing Options Available

Trusted AC Repair & HVAC Service in Eustis, FL Since 1959

Keeping Lake County homes comfortable with air conditioning repair, HVAC installation, mini splits, maintenance plans, and indoor air quality solutions built for Florida heat and humidity.

AC Not Cooling Properly?

What Florida Homeowners Usually Notice First

Most air conditioning problems begin with small warning signs before a complete breakdown occurs.

Homeowners often call us when they notice:


  • Warm air coming from vents
  • Uneven temperatures between rooms
  • Rising electric bills
  • Frozen evaporator coils
  • Excess humidity indoors
  • Loud outdoor unit noises
  • AC running constantly
  • Weak airflow


Florida's climate places significant stress on HVAC systems. Identifying issues early can often help avoid larger repairs and unexpected breakdowns during the hottest months of the year.

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Air Conditioning

Emergency AC repair, refrigerant issues, frozen evaporator coils, airflow problems, thermostat failures, and system diagnostics.

HVAC Installation & Replacement

High-efficiency system replacements designed for Florida heat, humidity control, and lower monthly utility costs.

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Mini Splits

Ductless cooling solutions for garages, additions, older homes, sunrooms, offices, and spaces with inconsistent temperatures.

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Indoor Air Quality

Whole-home filtration, humidity control, air purification systems, and cleaner indoor air solutions for Florida homes.

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Maintenance & Repairs

Seasonal tune-ups and preventative maintenance designed to improve efficiency and reduce unexpected breakdowns.

Should You Repair or Replace Your HVAC System?

One of the most common questions homeowners ask is whether repairing or replacing their HVAC system makes more financial sense.

The answer depends on several factors:


  • System age
  • Repair history
  • Refrigerant type
  • Energy efficiency
  • Airflow performance
  • Indoor humidity control
  • Utility costs
  • Ductwork condition


In some cases, a repair may provide years of reliable performance. In other situations, replacement may lower energy costs and reduce future repair expenses.

Our technicians help homeowners understand both options before making recommendations so you can make the best decision for your home and budget.

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Fast response times that get a trained technician to your door when you need help most

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Comprehensive air conditioning service covering installation, repair, and ongoing maintenance

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A 100% Money Back Guarantee that stands behind the quality of our work

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Local familiarity with Eustis, Altoona, Apopka, The Villages, Mt. Dora, Sorrento, Leesburg, and the unique needs of homes throughout Lake County

Reach out to us in Eustis and let's schedule a time that works for you.

What Impacts HVAC Repair & Installation Costs?

Homeowners often search online trying to understand HVAC pricing before contacting a contractor.



Several factors influence costs:

Home size

Existing ductwork condition

Insulation levels

Equipment efficiency ratings

Electrical upgrades

Accessibility

Indoor air quality upgrades

Humidity control requirements

Emergency service scheduling

Every home is different, which is why professional evaluation remains the most accurate way to determine pricing.

Our clients have some great things to share!

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St. Louis Air did a great job on our check-up service. They were friendly and fast! We are very pleased with their work. We will definitely use them again!


Buffy J

The staff in the office are wonderful, our tech Kyle is professional, knowledgeable and more importantly kind. Cannot say enough about how great this company is.


Brenda H.

Ryan is knowledgeable and personable. He did a fine job servicing our system. We will definitely have St Louis Air continue to provide service and maintenance


Jean S.

Tony, serviced our two air units and changed the filters. He was personable and friendly, did a good job! Appreciate him and St Louis Air for looking after us!


Betty H.

Tony was professional and courteous. He did a very thorough job. We’ve used St. Louis Air for many years and have always been happy with their service.


Annie T.

St Louis has been my AC company since I moved to Eustis in 2011. They are always professional and knowledgeable. Tom is fantastic 🙂. Give them a call!


Sonya

I have used St. Louis Air before and they are still my favorite AC company. Very professional, courteous, and do a great job. Will recommend to anyone.


Ron G.

St. Louis Air provides excellent service and quality work. I have been using them the past 15 years and their responsiveness has always been exceptional.


George P.

Unit quit working - needed a new compressor. Amanda and Ryan were very responsive and had us back working in no time. I would strongly recommend St Louis AC.


Peter W.

Ryan came over and did service on both our AC units. He was thorough, friendly and professional. I highly recommend St Louis Heating Air.


George J.

I have used St. Louis Air several times and they are always prompt to respond, knowledgeable, and able to get my a/c working properly again.


Carol T.

Called 1st thing on Monday and they took care of it the same day. Tom was very nice guy who made repairs very timely. Thanks Mary also!


Deborah C.

I called needing help with my AC and they responded Quickly. I was not even a regular customer but I definitely am now! The tech was friendly and efficient.


Irene R.

I have used St Louis Air Conditioning for over 30 years. No problems, they are reliable and stand behind their work. Love the office staff too.


Lois H.

Zack does a wonderful job.. He is personal and polite.

I have used St.Louis since the 70s. They have always been there for us….


Daisy W.

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Why HVAC Maintenance Matters More in Florida

Florida HVAC systems often operate 8-10 months per year under high heat and humidity.


Routine maintenance helps:


  • Improve efficiency
  • Reduce breakdowns
  • Extend equipment lifespan
  • Improve humidity control
  • Lower utility bills
  • Reduce emergency repairs


Club St. Louis Benefits


  • Two annual precision tune-ups
  • Priority scheduling
  • Discounted repairs
  • Maintenance reminders
  • Improved system reliability

HVAC Services Across Lake County & Central Florida


Because we have served Lake County since 1959, we understand the cooling demands, humidity challenges, and housing styles unique to Central Florida communities.

Proudly Serving Lake County, FL Since 1959

Why Homeowners Have Chosen St. Louis Air Conditioning For Generations

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Serving Lake County Since 1959

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Family-Owned Company

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Fully Trained Technicians

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Free Second Opinions

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Emergency Service Available

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Money Back Guarantee

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Schedule Trusted HVAC Service in Lake County

Whether you need emergency AC repair, HVAC replacement, mini split installation, indoor air quality improvements, or preventative maintenance, our experienced team is ready to help keep your home comfortable year-round.

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