Heat Pump Repair Service
Your heat pump stopped heating, or cooling isn't working the way it should.
Expert Heat Pump Diagnostics
When your heat pump fails—whether it won't heat on a cold night, won't cool on a hot day, or is running but delivering weak temperature control—you need someone who understands both the heating and cooling sides of the system. Heat pumps are more complex than a standalone air conditioner or furnace because they reverse their cycle seasonally, and diagnosing them requires testing both modes. That's where we come in.
Our team brings 50+ years of combined experience responding to heat pump emergencies across Middle Tennessee. We understand the full scope of what can fail: reversing valve malfunctions that prevent proper heating, low refrigerant capacity that affects both seasons, compressor issues, defrost cycle failures, and control problems. Our certified technicians test your system in both heating and cooling modes, identify the root cause, and repair or recommend replacement based on your system's age and the repair's cost.
Why Choose Us
Many HVAC companies specialize in either heating or cooling. Heat pumps work both ways, and a true diagnosis requires testing the system in both modes. We check heating capacity on cold days and cooling capacity on warm days. We test the reversing valve that switches between modes. Your repair is based on complete, two-season testing, not guesswork.
A rushed technician might blame a compressor when the real problem is a stuck reversing valve (much cheaper to fix). Our discipline requires a systematic checklist on every heat pump call: electrical circuits, pressures, temperatures, component testing, and defrost cycle verification. We document everything so you know exactly what was wrong and what we fixed.
Heat pump refrigerant work is regulated. Leaks, low charges, and improper evacuation are serious safety and environmental concerns. Our EPA 608 certification means we handle your system's refrigerant legally, safely, and to exact manufacturer specifications.
A heat pump that needs a major compressor repair when the unit is 11+ years old and used for both heating and cooling year-round may be a replacement candidate. We tell you honestly: "Your repair is possible, but here's what a new system costs, here's how much you'd save annually, and here's your financing options." You decide with full information.
We hold a Tennessee Mechanical (HVAC) and Refrigeration Contractor License, maintain full bonding, and carry a BBB A- rating. If a repair goes wrong, you have recourse. We stand behind our work because we're confident in our diagnosis and repair quality.
Heat pump failures don't respect the calendar. Winter heating emergencies and summer cooling failures both need urgent attention. We offer same-day service on most repairs and emergency response for critical situations. Reach out — we'll respond or get you on tomorrow's schedule with guidance on staying comfortable.
Request Your Heat Pump Repair Service
Is your heat pump not heating, not cooling, making strange noises, or running continuously without reaching temperature? Describe what's happening, and we'll schedule a diagnostic visit. We'll test both heating and cooling modes, identify the problem, explain your repair options, and provide an upfront estimate before any work starts.
Or explore related options:
Our Process
When you call with a heat pump problem, we ask specific questions about both seasons: "When did it stop working?" "Is it a heating issue or cooling issue, or both?" "What's the outdoor temperature?" "Did you notice any sounds or changes before it failed?" These details help us prioritize testing. If it's a winter heating emergency or extreme summer heat, we schedule same-day service. For routine repairs, we arrange a time that works for you.
We also assess your thermostat settings and give initial guidance: "Set the thermostat to your desired temperature and let the system run. If you're cold, you can temporarily switch to auxiliary electric heating mode—don't shut the system off." This keeps you comfortable while we schedule the diagnostic visit.
Our technician arrives with diagnostic tools to test heat pump function fully. We visually inspect the indoor and outdoor units for obvious problems, then perform systematic testing in BOTH heating mode and cooling mode. We measure refrigerant pressures on the high and low sides (critical in both directions), check evaporator and condenser coil temperatures, verify the reversing valve is switching properly between modes, and measure electrical voltage and current draw on all components.
We also test airflow using a balometer and check the defrost control cycle in winter. We examine the outdoor coil for excessive frost or ice. We document everything with pressure readings, temperature measurements, and photos so you have a clear record of what we found.
Once testing is complete, we explain exactly what we found and why your heat pump is struggling. For example: "Your refrigerant is low due to a leak on the outdoor coil. In heating mode, this reduces your heating capacity. In cooling mode, the same leak reduces cooling. Repair option 1: find and patch the leak, then recharge for both heating and cooling performance. Option 2: add refrigerant as a temporary fix, but the leak will return."
For an aging system with major failures (compressor, multiple leaks, reversing valve), we also discuss replacement: what a new heat pump would cost, annual energy savings for both heating and cooling, and available financing.
Once you approve the estimate, we perform the repair. This might involve replacing a failed reversing valve, sealing a refrigerant leak and recharging, replacing the compressor, cleaning blocked coils, repairing electrical connections, or replacing a defrost control. After repair, we run your system through a full test cycle in BOTH heating and cooling modes to confirm the problem is resolved and performance meets design specifications.
We verify heating capacity, cooling capacity, pressure readings, electrical draw, airflow, and proper mode switching. We cycle through all thermostat settings and confirm accurate temperature control in both seasons.
Before we leave, we provide a detailed invoice and guidance on preventing future problems. We explain any maintenance steps you can take: filter changes every 1–3 months, keeping both indoor and outdoor units clean, and scheduling spring and fall maintenance. We recommend our annual maintenance plan to catch minor issues before they become failures—especially important for heat pumps, which work year-round.
Our goal isn't just to fix today's problem—it's to help you avoid the next one.
Prevent Future Heat Pump Repairs
Once your heat pump is repaired and running properly, staying on top of maintenance is the key to preventing future breakdowns. Spring and fall tune-ups catch minor issues before they become expensive failures and keep your system heating and cooling efficiently year-round.
Our maintenance plans make staying on schedule easy — and they offer repair savings if issues ever do arise.
Getting more years out of your investment
Prevention of unexpected breakdowns during peak heating and cooling seasons
A clear, documented record of system condition that informs smart repair and replacement decisions
Improved system efficiency and lower monthly energy bills
Identify any conditions that could pose a hazard to your home or family
Measure how well your system is actually operating under current conditions
Honest, documented assessment of the current state of your equipment
Available to qualifying homeowners through the TVA program
Catch small problems before they become expensive repairs or emergency breakdowns
Financing Your Heat Pump Repair
Major heat pump repairs can be unexpected expenses, but financing options shouldn’t force you to wait for comfort. We work with Wells Fargo, TVA Financing, and Synchrony to offer flexible terms that fit repair costs into your budget.
There are no gimmicks and no pressure to finance. We discuss financing before you commit, so you can make the best decision for your home.
Straightforward financing through Wells Fargo, with a simple online application.
Contact Us to ApplyAvailable through participating utilities — convenient payments made right on your utility bill.
Contact Us to Check EligibilityFlexible financing through Synchrony to fit quality equipment into your budget.
Contact Us to ApplyReal Savings for Tennessee Homeowners
As a TVA EnergyRight Quality Contractor Network Member, Reliable Comfort Services Inc. can help Middle Tennessee homeowners access real money back through the TVA EnergyRight rebate program. These rebates represent a genuine opportunity to offset the cost of upgrading your system — or maintaining what you have.
Rebates toward high-efficiency HVAC system replacements
Incentives for upgrades that boost overall system efficiency
Rebates for replacing aging or leaking ductwork
Available to qualifying homeowners on annual maintenance
Ask us how to take advantage of what’s available in your area when you schedule service.
Protection You Can Count On
We stand behind our work and the equipment we install. Every new residential install can add an optional labor warranty of up to 10 years through a third-party program, and our LG Pro Dealer status includes a 12-year parts warranty on LG ductless systems — among the strongest coverage available. That’s how confident we are in the quality of our work.
Parts and major components are covered up to 10 years when the equipment is registered. We handle registration and keep your documentation. Coverage varies by equipment.
Available as an option on any residential unit we install, through a third-party program. If selected, it covers repair labor for up to 10 years — you choose whether to add it.
Included on LG ductless installations through our LG Pro Dealer status — one of the strongest coverage packages available. Applies to LG ductless equipment only.
Available on qualifying, select equipment only — if a major component such as the compressor or coil fails within the coverage period, the unit is replaced rather than repaired.
Customer Reviews
We repair heat pumps throughout the broader Middle Tennessee region. Contact us to confirm repair availability in your area — we’re always glad to help a neighbor restore their comfort.
Heat Pump Repair Service Areas
We respond to heat pump emergencies and repair requests throughout Middle Tennessee. Whether you need heating repair in winter or cooling repair in summer, our service areas include:
Answering Your Questions
If your system is under 8 years old and the repair cost is less than 50% of a new system's price, repair usually makes sense. For systems over 12 years old with major failures (compressor, reversing valve, multiple leaks), replacement may be smarter long-term. We provide a clear comparison during your estimate.
Repair costs vary widely based on the component and complexity. Simple fixes like capacitor replacement are affordable; major repairs like compressor replacement are among the most expensive. We provide a written estimate before any work begins so you know the exact cost upfront.
Several possible causes: low refrigerant, stuck reversing valve, auxiliary electric heating not engaging, defrost cycle running constantly, frozen coil, or blocked ductwork. Unlike a furnace (heating only), heat pumps need both heating and cooling modes tested. We'll run a full diagnostic in heating mode to find the issue.
Not necessarily. A refrigerant leak, low charge, or compressor problem affects both heating and cooling capacity. A stuck reversing valve affects only heating. A frozen coil or airflow blockage affects both modes. We test both heating and cooling to understand what's working and what's failed.
A heat pump must work in both heating and cooling modes, so diagnosis is more complex. We test the reversing valve, defrost cycle, and performance in both directions. An air conditioner repair only tests cooling mode. Heat pump repairs often require testing both seasons.
We repair all major brands: LG, Carrier, Trane, Ruud, Goodman, Tempstar, and Mitsubishi Electric. We source original manufacturer parts when possible and use approved equivalent components when necessary. Brand never affects our diagnostic process—we test and repair all systems the same way.
Your heat pump may be running continuously because outdoor temperatures are cold, auxiliary electric heating is engaged, or the system isn't reaching your set temperature due to a problem. Low refrigerant, a reversing valve issue, or blocked coil can prevent adequate heating. We diagnose why it's running non-stop and fix the underlying issue.
Some noise is normal during defrost—the reversing valve clicks, and the system may emit a hiss as it shifts modes. But loud grinding, squealing, banging, or continuous noise is not normal and signals a repair is needed. We listen carefully and identify what each sound means.
Always run your heat pump first. The heat pump's heating efficiency far exceeds electric resistance heating. Auxiliary heat is only for the coldest days when the heat pump can't keep up—it engages automatically when needed. Switching to auxiliary-only wastes energy. We'll verify your system is heating normally during your service call.
Complete Heat Pump & Home Comfort Services
Once your heat pump is repaired and running properly, staying on top of maintenance is the key to preventing future breakdowns.
If repair isn't cost-effective, explore a new high-efficiency heat pump with modern controls and financing.
Explore Heat Pump InstallationSpring and fall maintenance prevent breakdowns and extend system life for year-round comfort.
Explore Heat Pump MaintenanceNeed cooling-only service? We repair traditional air conditioning systems too.
Explore Central AC RepairSome homes use a furnace with a heat pump hybrid. We repair furnaces and the complete integrated system.
Explore Furnace RepairOnce your heat pump is repaired and running, improve year-round air quality with filtration and humidity control.
Explore Indoor Air Quality
Your Heat Pump Repair and Diagnostic Experts
When your heat pump fails—whether you need heating in winter or cooling in summer—you need a company that understands both cycles and diagnoses accurately. Our team brings 50+ years of combined experience solving heating and cooling emergencies across Middle Tennessee. We arrive prepared with the right tools, we test both modes systematically, and we explain what we find before we start any work.
Our technicians are licensed, EPA 608-certified for refrigerant work, and trained on all major heat pump brands and models. We offer same-day service on most repairs and emergency response when you need us most. And we're honest: if your system is beyond cost-effective repair, we'll help you understand your replacement options with clear financing paths.
Join our maintenance plan to prevent future breakdowns and explore financing options if you're considering a replacement system.