Festus, MO · Jefferson County
Heat Pump Repair That Finds the Problem on Both Sides of the System
Exactly what's wrong. Exactly what it costs. In writing.
A heat pump has to heat, cool, and switch between modes correctly. ExactAir checks system operation, airflow, electrical components, controls, and performance to find what’s actually causing the problem.
Veteran-Owned · Family-Owned · EPA Certified · Fully Insured · Est. 2025
Signs Your Heat Pump May Need Repair
What Are the Warning Signs of a Heat Pump Problem?
Heat pump issues can show up in heating, cooling, airflow, or system operation. Watch for changes like these:
- Not heating properly — The system runs but the home stays colder than expected.
- Weak cooling — Your heat pump struggles to maintain comfortable temperatures in summer.
- Frequent cycling — The system starts and stops more often than normal.
- Poor airflow — Vents are producing noticeably less air than they used to.
- Unusual sounds — New buzzing, grinding, rattling, or clicking should be checked.
- Ice buildup — Excessive ice can indicate an operating or airflow problem.
- Uneven temperatures — Some rooms remain noticeably warmer or colder than others.
- Higher energy use — A sudden increase may point to declining system performance.
What Actually Happens During a Heat Pump Repair Visit
Heat pump repair starts with understanding how the system is behaving, not immediately replacing a part. ExactAir works through the system to identify the actual fault.
Check Overall Operation
The technician checks how the heat pump starts, runs, changes modes, and responds to the thermostat.
Test System Performance
Heating or cooling performance, airflow, temperatures, and other operating conditions are checked against what the system should be doing.
Inspect Key Components
Electrical components, controls, motors, refrigerant-related operation, and other relevant parts are evaluated based on the symptoms.
Identify the Actual Problem
The findings are narrowed down to the component, condition, or system issue causing the performance problem.
Explain the Repair
You'll know what was found, what needs attention, and what the repair will cost before repair work begins.
Verify the Repair
After the work is completed, the heat pump is operated again to confirm the system is functioning properly.
Why Jefferson County Homeowners Choose ExactAir for Heat Pump Repair
Diagnosis Before Replacement
A heat pump problem is investigated before replacement becomes part of the conversation.
Heating and Cooling Matter
The system is evaluated for the mode that's failing instead of looking at only one side of its operation.
Real Operating Conditions
Testing focuses on how the equipment is actually performing in your home.
Clear Repair Information
You get an understandable explanation of the problem and the work recommended.
Owner-Level Accountability
Brett Lahue is the owner and lead technician, keeping the service personal from diagnosis through completion.
Where "Exact" comes from
ExactAir Heating and Cooling was founded in 2025 by Brett Lahue — an Army veteran who learned the trade the old way, checked off job by job under his father, a by-the-book technician himself.
When a job was done right, the answer was always the same word: “Exactly.” The name, and the standard behind it, stuck.
Today ExactAir is a small, owner-operated company serving Festus and Jefferson County — background-checked, EPA certified for both Universal and A2L refrigerants, and insured through Federated Insurance.
— Brett Lahue, Owner & Lead Technician
Heat Pump Repair in Festus & Jefferson County, MO
ExactAir provides heat pump repair throughout Festus and surrounding Jefferson County communities. Service is generally available within about 45 minutes of Festus.
Note: A trip fee applies past the standard service radius. Service inside St. Louis city and St. Louis County is currently limited, pending additional licensing there.
What Customers Say About ExactAir's HVAC Service
Frequently Asked Questions
Heat Pump Repair FAQs
How much does heat pump repair cost?
The cost depends on what has failed and what the system requires. ExactAir diagnoses the problem and explains the repair cost before work begins.
Why is my heat pump running but not heating?
Several issues can cause this, including airflow restrictions, electrical problems, controls, refrigerant-related issues, or component failure. Proper testing is needed to identify the cause.
Can you repair a heat pump that isn't cooling?
Yes. ExactAir can diagnose heat pump cooling problems and determine whether the issue involves airflow, electrical operation, controls, or another system component.
Why does my heat pump keep turning on and off?
Frequent cycling can result from control problems, airflow issues, sizing concerns, or other system conditions. The cause needs to be identified rather than assuming the thermostat is the problem.
Should I repair or replace my heat pump?
That depends on the system’s condition, repair requirements, age, performance, and overall situation. ExactAir can explain what was found so you can compare the available options.
Can ExactAir repair my existing heat pump?
Yes. ExactAir provides heat pump repair and evaluates the existing system to determine what is causing the problem before recommending the next step.
Don't Guess at a Heat Pump Problem.
Get the system checked, understand what’s actually wrong, and know what the repair involves before the work begins.
