What Our Customers Say

"Our AC went out on a 97-degree day and STL Air Pros had a tech at our house within two hours. Fixed a blown capacitor on the spot, explained exactly what failed and why, and the price was totally reasonable. Won't call anyone else."

"Replaced our 18-year-old furnace with a new high-efficiency unit. The crew was on time, professional, and cleaned up completely. They also caught a small carbon monoxide issue with the old heat exchanger — probably saved our family from a serious problem."

"I've used three different HVAC companies over the years and STL Air Pros is in a different league. Straight answers, no upselling, competitive pricing. My maintenance plan has caught two small issues before they became expensive repairs."

"Installed a ductless mini-split in our sunroom addition. The install was clean, they walked us through every setting, and the unit works perfectly. The room went from unbearable in summer to our favorite spot in the house."

"Called at 11pm when our heat pump stopped working before a cold front. Tech was here by midnight, had it running in an hour. No ridiculous after-hours markup either. That kind of service is hard to find."

"STL Air Pros completed a full HVAC system replacement for our office building. The project came in on budget, the crew worked around our business hours, and the new system cut our energy bills noticeably in the first month."

"Honest, thorough, and fast. They diagnosed a refrigerant leak that two other companies missed. Repaired the leak, recharged the system, and it's been running perfectly ever since. I trust these guys completely."

"Our upstairs was always 8 degrees hotter than downstairs. STL Air Pros installed a two-zone system and the difference is night and day. Finally comfortable everywhere in the house. Worth every penny."

"Exceptional service from start to finish. They performed a proper load calculation before recommending a new system — something three other companies skipped. The system they sized is perfect for our home."

"Our furnace started making a loud booming noise right before a January cold snap. STL Air Pros came out the same morning, found a cracked igniter, and had the heat back before lunch. Honest pricing and a genuinely friendly tech."

"Our 1930s home had a converted gravity furnace that was costing a fortune. They installed a compact high-efficiency unit that fit the tight basement space perfectly. The energy savings showed up on the very next bill."

"The AC at our small business went down on a Friday afternoon. They had a tech out within the hour and got us running again before we lost a weekend of business. That's the kind of responsiveness you can't put a price on."

"Two other companies told me I needed a whole new system. STL Air Pros actually diagnosed a bad capacitor and a dirty coil, fixed both for a fraction of the cost, and told me my system still had years left in it. Finally an honest HVAC company."

"The humidity in our house was unbearable even with the AC running. They installed a whole-home dehumidifier and the difference is incredible — no more sticky feeling and the AC runs less. Wish I'd called them years ago."

"Small house, tight lot, and they figured out a condenser placement that doesn't rattle the neighbor's windows. Smart, considerate, and the install was spotless. Exactly the kind of thoughtfulness you want from a local company."

"Down near the river our humidity is always high. They sealed our ductwork, cleaned the coil, and added filtration — the air feels cleaner and the system finally keeps up on the worst summer days. Great local team."

"New construction home with a builder-grade system that started short-cycling. They found the system was overcharged from day one, corrected it, and now it runs quietly and efficiently. Should have had them out sooner."

"Our house is up on a ridge and the winter wind made our old furnace run constantly. They sized a new dual-fuel system properly and our comfort — and our gas bill — have never been better. Real pros."

"When my mom's furnace quit they made her a priority call even though she wasn't an existing customer. Treated her with respect, no pressure, fair price. That tells you everything about how this company is run."

"Our 1920s home has a tiny mechanical room and every other company said a modern furnace wouldn't fit. STL Air Pros found a compact unit, did a clean install, and even improved the airflow to the second floor. Problem solvers."