Certified Heat Pump & Reversing Valve Specialists
Techs Who Actually Specialize in Heat Pumps

Stuck in Defrost? Won't Switch Modes? Heat Pump Repair in Saint Peters, MO

We service both air-source and ductless heat pump systems.

A heat pump stuck in one mode, or one that's iced over and won't defrost, gets diagnosed with the right tools for that specific failure mode.

A heat pump that seems to be 'not heating' is often actually a reversing valve or defrost cycle problem, which a technician trained mainly on standard ac systems can easily misdiagnose, which is exactly why heat pump repair calls in Saint Peters, MO get treated with urgency, not a next-available-Tuesday slot.

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Licensed Heat Pump Repair service in Saint Peters, MO - AAA Pro HVAC

Waiting rarely saves money and often turns a same-day repair into a longer, more involved job.

Why Choose Our Specialized Heat Pump Repair in Saint Peters, MO

Our technicians treat every heat pump repair call in Saint Peters, MO the same way, whether it's a straightforward fix or a stubborn intermittent fault that two other companies already missed.

Every truck across Saint Peters, MO carries the tools and common parts specific to heat pump repair, so most calls finish in a single visit.

Professional Heat Pump Repair technician working in Saint Peters, MO

Heat Pump Specialization

Our techs are specifically trained on reversing valves, defrost boards, and auxiliary heat systems, not just general AC repair logic.

Year-Round Priority Dispatch

No-heat calls in winter get the same priority as no-cool calls in summer.

Flat-Rate Pricing, No Guesswork Billing

You get a quoted price after the reversing valve and defrost cycle are actually tested, not billed for trial-and-error.

Specialized Diagnostic Tools

We test reversing valve solenoids, defrost thermostats, and control board timing directly.

Comprehensive Heat Pump Repair Solutions

Every job starts with a real diagnosis, not a guess — here's the full scope of what our heat pump repair technicians handle across Saint Peters, MO.

Reversing Valve Diagnosis & Repair

A stuck reversing valve is the single most common reason a heat pump gets stuck in one mode. This is one of the most requested heat pump repair calls we get across Saint Peters, MO.

Defrost Cycle & Control Board Repair

We verify the defrost cycle actually triggers under test conditions. Techs handling defrost cycle & control board repair carry the specific parts and tools this job calls for, not a generic kit.

Auxiliary / Emergency Heat Strip Repair

We test heat strip elements and the relay controlling them separately. This is one of the most requested heat pump repair calls we get across Saint Peters, MO.

Refrigerant Charge & Leak Detection

We charge to the manufacturer's heat pump-specific target, not a generic number. Techs handling refrigerant charge & leak detection carry the specific parts and tools this job calls for, not a generic kit.

Outdoor Unit Icing Diagnostics

Some icing is normal during defrost cycling; persistent icing that never clears points to a genuine fault. This is one of the most requested heat pump repair calls we get across Saint Peters, MO.

Ductless Heat Pump System Repair

Ductless mini-split heat pumps have their own fault-code language separate from central systems. Techs handling ductless heat pump system repair carry the specific parts and tools this job calls for, not a generic kit.

24/7 Emergency Heat Pump Repair experts in Saint Peters, MO

The Heat Pump Repair Process, Start to Finish

1

Call Dispatch

That detail determines which specialized tools ride along.

2

Rapid Mobile Arrival

We confirm your Saint Peters address and a realistic arrival window.

3

Expert Assessment & Quote

Reversing valve, defrost cycle, and refrigerant charge are tested against heat pump-specific specs before any quote.

4

Guaranteed Resolution

Workmanship is guaranteed and documented on your invoice.

Reliable Heat Pump Repair contractor in Saint Peters, MO by AAA Pro HVAC

What Saint Peters Customers Say About Our Heat Pump Repair

★★★★★

Previous company just topped off refrigerant twice — this tech found the stuck reversing valve in ten minutes.

Delphine R. — Saint Peters, MO
★★★★★

Outdoor unit was constantly covered in ice and I thought that meant it was broken.

Anton K. — Saint Peters, MO
★★★★★

They tested the relay separately from the strips themselves and found the actual fault fast.

Shawna I. — Saint Peters, MO
★★★★★

Tech recognized it immediately as a defrost-related fault specific to that brand.

Percy L. — Saint Peters, MO
Trusted Heat Pump Repair service in Saint Peters, MO - AAA Pro HVAC

Common Heat Pump Repair Questions in Saint Peters, MO

Why is my heat pump blowing cold air when it's set to heat?+

Often a stuck reversing valve, which controls whether the system is in heating or cooling mode.

Is ice on my heat pump's outdoor unit normal?+

Some frost during a normal defrost cycle is expected; ice that never clears points to a defrost board or thermostat fault.

How is heat pump repair different from regular AC repair?+

Heat pumps have a reversing valve, defrost cycle, and often auxiliary heat strips that standard AC systems don't have.

Why does my heat pump seem to run constantly in cold weather without ever feeling warm enough?+

Heat pumps naturally work harder as outdoor temperatures drop, and auxiliary heat should engage below a certain threshold.

Do you repair ductless heat pump mini-splits?+

These systems have their own fault-code patterns that our techs are trained to read.

How fast can a heat pump specialist reach Saint Peters during winter?+

No-heat heat pump calls get year-round priority dispatch across Saint Peters, MO.

Affordable Heat Pump Repair solutions in Saint Peters, MO

Serving Saint Peters and the Surrounding Communities

We Cover Saint Peters and Beyond

Our heat pump repair crews are positioned throughout Saint Peters, MO to keep response times realistic, not just promised.

☎ Call +1-866-805-8548 for Saint Peters Service
Top rated local Heat Pump Repair specialists in Saint Peters, MO
Offering top quality Heat Pump Repair services in Saint Peters, MO. Certified, licensed, and available 24/7.

Zip Codes in Saint Peters, MO that we also serve: 63376

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Our Services

Our Services in Saint Peters, MO

Hvac
Hvac Repair
Ac Repair
Emergency Hvac
Air Conditioning Repair
Furnace Repair
Hvac Installation
Ac Installation
Hvac Maintenance
Ductwork Repair
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