Package Unit Repair
Get your combined heating and cooling working again — fast.
Expert Package Unit Diagnostics
Your package unit has stopped cooling, won’t heat, or both systems are running but struggling. Maybe there’s ice on the outdoor unit, a strange noise, or the thermostat won’t control temperature. When a package system fails, you lose both heating and cooling in one breakdown — which is why fast, accurate diagnosis matters. That’s what we do.
Our team brings 50+ years of combined experience diagnosing and repairing package HVAC systems across Middle Tennessee. We arrive prepared to test the heating and cooling circuits, identify the problem quickly, and repair it on the same day whenever possible. Our certified technicians understand the integrated design of package units — how the heating and cooling components interact, share controls, and affect each other — and we have the expertise and parts to handle repairs to either system. We’re honest about what can be fixed, what needs replacement, and when a newer system is smarter than chasing expensive repairs on an aging unit.
What Sets Our Repair Diagnosis Apart
Package units contain heating and cooling in one cabinet, with shared electrical systems, ductwork routing, and control boards. Many HVAC technicians service them as if they were two separate systems. We understand how they work as one integrated unit. If heating fails, we test both the furnace circuit and the thermostat; if cooling fails, we check refrigerant, electrical, and airflow as interconnected components.
Our technicians follow a structured diagnostic protocol on every service call. We test the heating circuit (if the problem involves heating), the cooling circuit (if cooling is affected), the blower motor, all electrical connections, and the thermostat. This systematic approach catches issues that surface only when you test all systems together — something a single-service approach misses.
We hold a Tennessee Mechanical (HVAC) and Refrigeration Contractor License, full bonding, and a BBB A- rating. When you need both heating and cooling repaired, you need a company with credentials to service both. We stand behind our integrated diagnostics on every repair.
Package units use refrigerant in cooling circuits. Only EPA 608-certified technicians can legally handle, test, and charge refrigerant. Our certification applies to all types of refrigerants used in package systems, whether they’re traditional or newer blends.
A package unit that needs a costly heating element replacement and a refrigerant recharge when the unit is already 15+ years old may be a candidate for replacement. We tell you honestly: “Both repairs are possible, but here’s what a new unit costs, here’s the financing available, and here’s what you’d save annually in efficiency.”
Package unit failures create urgency — you lose heating in winter or cooling in summer when one system goes down. We offer same-day service when available on many repairs and emergency response when comfort is at risk. Reach out for emergency service — we’ll come out that day when possible or provide guidance.
Free, No-Obligation Estimate
Is your package HVAC unit not heating, not cooling, or both systems struggling? Describe what you’re experiencing, and we’ll schedule a diagnostic visit. We’ll test both circuits, identify the problem, explain your repair options, and provide an upfront estimate before we start any work.
Or explore related options:
Our Process
When you call with a heating or cooling problem, we ask specific questions: "When did this start?" "Is it only cooling that failed, only heating, or both?" "Any unusual sounds?" "Is the outdoor unit running?" "Does the thermostat have power?" These details help us determine urgency and whether same-day service is appropriate. For winter heating failures in cold weather or summer cooling failures in extreme heat, we prioritize emergency scheduling.
We also provide temporary guidance: use space heaters safely (for heating failure) or close drapes and use fans (for cooling failure). These steps help you stay comfortable while waiting for our technician.
Our technician arrives with diagnostic tools and parts for common repairs. We visually inspect the outdoor package unit and indoor components for leaks, damage, or obvious failures. Then we perform systematic testing on both the heating and cooling circuits: test thermostat operation, measure refrigerant pressures, test electrical circuits and component draws, measure temperature differentials across the heating element and cooling coil, and test airflow.
We also check the blower motor operation, examine filters, and inspect ductwork for blockages. Everything is documented with photos and readings so you have a complete record of what we found.
Once testing is complete, we explain what we found. For example: "Your cooling system is low on refrigerant due to a small leak on the refrigerant line. Your heating element is functioning normally. The problem is only in the cooling circuit. Here’s what repair looks like: locate and seal the leak, then recharge the refrigerant." Or: "Your heating element failed, which doesn’t affect cooling, but we need to replace it to restore heat. Here’s the cost and timeline."
For aging systems with major failures on both heating and cooling sides, we discuss replacement: what a new integrated package unit costs, financing options, and long-term energy savings.
Once you approve the estimate, we perform the repair. This might involve replacing a failed thermostat, repairing a refrigerant leak and recharging, replacing a blower motor, repairing a heating element, cleaning blocked ductwork, or fixing electrical connections. After the repair, we run the entire system through a test cycle — cycling through heating and cooling modes to confirm both work properly and operate at design specifications.
We verify heating and cooling capacity, pressure readings, electrical operation, and airflow. We measure temperature output, cycle through all thermostat modes, and confirm the system responds correctly.
Before we leave, we provide a detailed invoice and guidance on preventing future issues. We explain any maintenance steps you can take (filter changes, keeping outdoor areas clean, scheduling annual tune-ups for both heating and cooling). We recommend our annual maintenance plan — which includes both a heating tune-up and cooling tune-up — to catch minor issues before they become failures.
Our goal is to fix today’s problem and help you prevent the next one.
Warning Signs
If your system won’t start or keeps cycling on and off, the problem could be a tripped breaker, a failed thermostat, a blocked air filter, or a control board malfunction. The fact that it affects one integrated unit means both heating and cooling are disabled. Don’t assume it’s just the thermostat — we’ll test electrical connections, the thermostat response, and control board operation to identify what’s actually happening.
A package unit shares components for both heating and cooling. If only one operates, the problem is usually specific to that circuit: a refrigerant leak in the cooling side, or a heating element or gas valve failure in the heating side. We’ll isolate which circuit is failing and focus the repair there — but we test both to rule out shared component issues like a failed blower motor or control problem.
Refrigerant leaks prevent cooling and damage the compressor if the system runs low on refrigerant. A package unit with a leak can’t cool properly, and you may hear hissing at the outdoor unit or see frost on the indoor coil (often visible if your unit has accessible air intake areas). We locate the leak using electronic detection, repair it, and recharge the system to manufacturer specifications.
Your system runs, but your home isn’t reaching the thermostat setpoint. This could be low refrigerant on the cooling side, a failed heating element on the heating side, blocked ductwork affecting both, a stuck blower motor, or a thermostat not communicating correctly. We measure temperature output, test airflow, check system pressures, and trace the problem systematically — treating the package unit as an integrated system.
Ice buildup on the outdoor unit or frozen coil indoors signals a serious problem: low refrigerant, restricted airflow, a stuck expansion valve, or a defrost cycle failure. A frozen package unit won’t heat or cool, and continued operation damages the compressor. We identify the root cause and fix it before the system sustains permanent damage.
Grinding, squealing, or rattling noises from a package unit often point to bearing wear in the compressor, blower motor issues, or loose internal components. Hissing usually indicates a refrigerant leak. These sounds tell us what’s failing — we listen carefully and diagnose before the problem escalates.
Common Repairs
From refrigerant leaks to heating element failures, we handle all package unit repairs with expertise and care.
Your package unit’s cooling circuit needs refrigerant to work. Leaks cause weak cooling, higher energy bills, and compressor damage if ignored. We locate the leak using electronic detection, repair it, and recharge your system to manufacturer specs. Once we find the leak, the fix is straightforward.
Request Refrigerant Leak RepairIf your package unit won’t heat, a failed heating element (electric) or gas valve (gas) is often the culprit. We test the heating circuit, identify which component failed, and replace it. This restores full heating capacity without affecting cooling. A heating repair on a package unit is usually straightforward and affordable.
Get Heating Element Repair ServiceA failed blower motor means your package unit can’t move air through your home — neither heated air in winter nor cooled air in summer. The blower motor affects both systems equally. Blower replacement is a critical repair that restores full comfort. We replace it with a quality motor and verify airflow afterward.
Schedule Blower Motor RepairIf your thermostat won’t turn on the package unit, displays errors, or won’t control temperature, the thermostat or its wiring is the problem. We test the thermostat and control board, repair faulty wiring, or replace the thermostat. A failed thermostat can affect both heating and cooling operation, so this repair restores your ability to control both systems.
Test & Repair Your ThermostatFailed contactors (electrical switches) or loose connections can prevent your package unit from starting or cause repeated shutdowns. We test all electrical connections, inspect the contactor, and replace it if failed. This is often an inexpensive repair that solves heating and cooling control issues.
Repair Electrical ComponentsWeak heating or cooling often stems from blocked, leaking, or poorly insulated ductwork, not a system failure. We measure airflow, locate blockages, seal leaks, and restore proper distribution. Sometimes this involves duct cleaning; sometimes it’s sealing connections or adding insulation. Restoring airflow dramatically improves comfort.
Improve Heating & Cooling AirflowThe compressor is the heart of your package unit’s cooling system. Compressor failure prevents cooling and is one of the most expensive repairs. For units over 12 years old, we discuss whether replacement is smarter. For newer units, compressor replacement restores cooling and full performance.
Evaluate Compressor Repair OptionsPackage unit failures create urgency — you can’t heat or cool when the system fails. We offer emergency service for urgent situations. Reach out for emergency service — we’ll come out that day when possible or provide guidance.
Request Emergency Package Unit ServiceProtect Your Package Unit Investment
Once your package unit is repaired, staying on top of maintenance is the key to preventing future failures. Annual maintenance — both a spring cooling tune-up and fall heating tune-up — catches minor issues before they become breakdowns and keeps your system running efficiently.
Our maintenance plans make staying on schedule easy and 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 Package Unit Repair
Major package unit repairs can be substantial investments, but financing options help make repairs affordable. We work with Wells Fargo, TVA Financing, and Synchrony to offer flexible terms that fit repairs 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 package units throughout the broader Middle Tennessee region. Contact us to confirm repair service availability in your area — we’re always glad to help a neighbor get their heating and cooling working again.
Package Unit Repair Service Areas
We repair package HVAC units throughout Middle Tennessee. Our service areas include fast diagnostic and repair service for package units across the region.
Answering Your Questions
If your system is under 8 years old and repair cost is less than 50% of a replacement unit’s price, repair makes sense. For systems over 12 years old with major failures (compressor, heating element, plus recurring problems), replacement may be smarter long-term. We’ll give you a clear comparison during your estimate.
Repair cost depends on the specific failure and the parts involved — a simple electrical fix is far less involved than a compressor replacement. Common repairs include refrigerant leaks, heating elements, and blower motors. We always provide a written estimate before any work begins so you know the exact cost.
Simple repairs (thermostat, electrical connection) take 1–2 hours. Moderate repairs (refrigerant leak repair) take 2–4 hours. Major repairs (compressor or heating element) may take most of a day. We discuss the timeline during our estimate.
Yes. We repair all major brands: LG, Carrier, Trane, Ruud, Goodman, and others. 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.
A package unit integrates heating and cooling. If one circuit fails, the other may still operate. For example, if cooling fails but heating works (or vice versa), the problem is usually isolated to that circuit. We test both to determine the exact failure point and repair accordingly.
Running with low refrigerant damages the compressor. If we diagnose a cooling-side leak, we recommend stopping use until we repair it. For short-term comfort, use fans and space heaters. A refrigerant leak requires repair — adding refrigerant without fixing the leak is temporary and damages the compressor further.
Annual maintenance is key — both a spring cooling tune-up and fall heating tune-up catch small problems early. Change filters regularly, keep the outdoor unit clean and free from debris, and schedule service at the first sign of trouble. Our maintenance plans include both seasonal tune-ups and help prevent most failures.
Yes. Package unit failures create urgency, especially in extreme weather. We offer same-day and emergency response. Reach out for emergency service — we’ll come out that day when possible or provide guidance.
Recurring problems suggest either incomplete diagnosis or a deeper system issue. We’ll investigate more thoroughly, test all related components, and review any previous repair attempts.
We test both during our diagnostic. If the thermostat sends a signal but the unit doesn’t respond, the unit is the problem. If the unit runs but the thermostat doesn’t control it, the thermostat is the issue. Testing both prevents misdiagnosis and unnecessary repairs.
Yes. If only the cooling circuit fails, heating may still operate, and vice versa. Partial operation means you have some comfort, but both circuits should work. We repair the failed circuit and test both before leaving to ensure full operation is restored.
Related Services
Once your package unit is repaired, regular maintenance keeps both systems running smoothly.
When repair isn’t cost-effective, we install new package units with professional setup and financing.
Explore Package Unit InstallationAnnual spring cooling and fall heating tune-ups prevent breakdowns and keep your system efficient.
Explore Package Unit MaintenanceFor homes with separate heating and cooling, we repair furnace systems with the same expertise.
Explore Furnace RepairIf you’re considering separate air conditioning, we provide comprehensive AC repair service.
Explore Central AC RepairHeat pumps offer efficient heating and cooling and can work with package unit configurations or separately.
Explore Heat Pump Repair
Ready When You Are
When your package unit stops working, you lose both heating and cooling in one breakdown. That’s why fast, accurate diagnosis and expert repair matter. Our team brings 50+ years of combined experience diagnosing and repairing package HVAC systems for Middle Tennessee homeowners. We understand the integrated design, test both heating and cooling circuits, and identify problems quickly so we can repair them on the same day whenever possible.
Our technicians are certified, we stand behind our work, and we’re transparent about repair versus replacement. Whether it’s a simple thermostat fix, a refrigerant leak, a heating element failure, or a compressor issue, we handle all repairs with the same expertise and attention to detail. We’ll explain the problem, show you your repair options, and get your approval before we start any work.
Explore financing options if repair costs are substantial. And after your repair is complete, discover how our maintenance plans protect your investment and keep both heating and cooling running smoothly for years to come.