AC & Heating Service

Climate Control You Can Count On — Year Round

Missouri summers get hot and winters get cold — your climate system works hard in both directions. At Auto Tech Services, we diagnose and repair the full heating and cooling system, not just recharge refrigerant and send you on your way. If the air isn't right, we find out why.

Our technicians are equipped to handle everything from a straightforward refrigerant recharge to a complete compressor replacement, heater core repair, or blend door actuator diagnosis. We service all makes and models, and we'll tell you exactly what we find before we do anything.

Signs Your AC or Heat Needs Attention

• Air coming out warm even on max cool, or cold air coming out when you want heat
• Weak airflow from the vents regardless of fan setting
• Musty or moldy smell when you turn on the AC or heat
• Strange noises — clicking, squealing, or rattling — when the system kicks on
• Moisture or fogging on the inside of the windshield (often a heater core symptom)
• Refrigerant visibly leaking or system losing charge faster than normal
• AC compressor clutch not engaging, or compressor cycling on and off rapidly

What We Service

• Refrigerant recharge and leak detection
• AC compressor, condenser, and evaporator service
• Heater core replacement
• Blend door actuator repair
• Cabin air filter replacement
• Full climate control diagnostics — including dual-zone and automatic systems
• Cooling fan inspection (tied directly to AC performance)

Our Approach

We start every climate service with a full system inspection — not just a pressure check. We verify the compressor, check for leaks at all connection points, test the fan operation, and confirm the blend doors are moving correctly. If there's a problem, you'll know exactly what it is and what it costs to fix before we touch anything.

We back our work with a solid warranty and won't upsell you on parts you don't need. If a recharge is all you need, that's all we'll do.