Expert Heat Pump Repair When Your System Stops Working
Ducted Heat Pump Repair & Service in Worth, IL
A failing heat pump leaves you without heating or cooling, disrupting comfort in any season. MH HVAC provides thorough diagnostics and reliable repair service for ducted heat pumps throughout Worth and surrounding communities. Our technicians test refrigerant charge, airflow, electrical operation, and heating/cooling performance. Whether your system won't start, isn't heating in winter, won't cool in summer, or has lost efficiency, we diagnose the real problem, provide a written estimate upfront, and fix it right the first time.
HONEST DIAGNOSTICS
Worth Homeowners Rely on MH HVAC for Honest Heat Pump Repair
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Precision Diagnostics on Heating & Cooling Faults
Heat pumps shift between heating and cooling modes, making diagnosis more complex than single-mode systems. We test both cycles, verify refrigerant pressures, measure heating output, check the reversing valve, and confirm the backup electric heater activates when needed. Proper diagnosis means the repair sticks instead of coming back a few weeks later.
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Transparent Repair Estimates
Our written quote shows the exact problem we found, the repair method, parts costs, labor, and expected outcome. No surprises when the invoice arrives. If the repair approaches replacement cost or your heat pump is nearing end-of-life, we'll discuss replacement options and financing honestly before you spend money on an aging unit.
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Experienced Repair Work on Ducted Systems
A heat pump depends on correct refrigerant charge, proper airflow through ducts, and smooth operation of the reversing valve. We bring expertise in all three, handling both refrigeration and ductwork repairs without passing you to another contractor or subcontracting the job out.
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Family-Owned Service Since 2018
Worth families trust us to diagnose heat pump problems honestly and repair them efficiently. We honor our work with a parts and labor warranty and show up on time, ready to restore your home's comfort, and we also offer discounts for veterans and first responders.
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Fair Repair vs. Replacement Guidance
An aging heat pump, or one with a history of major repairs, may cost more to keep fixing than replacement would. We'll show you the numbers and let you decide. We never push a repair when replacement makes more financial sense for your household.
READY TO GET HELP
Tell Us About Your Heat Pump Problem
Describe what's happening: Is it not heating on cold days, won't cool in summer, making noise, leaking water, or running but not reaching set temperature? The more detail you provide, the faster we can prepare and get you scheduled for service with the right parts already on the truck.
WARNING SIGNS
Signs Your Heat Pump Needs Professional Repair
No Heating on Cold Days or Insufficient Heating Output
A heat pump should deliver warm air throughout winter down to very low temperatures. If it's not heating, or if only the backup electric heater runs, the problem may be a failed compressor, refrigerant leak, reversing valve stuck in cooling mode, or ductwork issue. We test heating output, refrigerant pressure in heating mode, and valve operation to pinpoint the failure.
No Cooling in Summer or Poor Cooling Performance
Cooling failure in a heat pump can mean low refrigerant, a clogged evaporator coil, compressor trouble, or a reversing valve that won't switch to cooling mode. We pressure-test the system, inspect coils, and verify the valve responds to cooling calls. The same compressor that failed may affect both modes simultaneously.
System Cycles On and Off Frequently
A heat pump that short-cycles—turning on and off every few minutes—wastes energy and never reaches set temperature. This usually signals low refrigerant, a clogged filter or coil, a thermostat problem, or an overcharge of refrigerant. We test pressures, clean coils, and verify thermostat calibration to restore normal cycling.
Backup Electric Heat Running Constantly
A heat pump's backup (auxiliary) electric heater is meant for backup on very cold days, not full-time operation. If it's running constantly, the main compressor isn't working, suggesting a compressor failure, refrigerant leak, or electrical issue. Constant electric heat means high energy costs—we'll diagnose and fix the root cause.
Water Leaking from Indoor or Outdoor Unit
Water pooling around the outdoor unit or dripping indoors can signal a clogged condensate drain, frozen evaporator coil, low refrigerant (causing icing), or a failed pump. Leaks require attention quickly—they indicate the system isn't operating normally and may lead to component damage.
Unusual Sounds During Heating or Cooling
Hissing, grinding, squealing, or banging sounds indicate specific problems: refrigerant escaping, bearing wear, loose components, or liquid refrigerant entering the compressor (slugging). These noises mean damage is progressing. We identify the source and repair it before the system fails completely.
OUR REPAIR PROCESS
Our Heat Pump Repair Process: Diagnosis Through Testing
We arrive with diagnostic equipment: manifold gauges to measure refrigerant pressure in both heating and cooling, a clamp meter to verify electrical current, thermometers to test temperature output, and tools to check the reversing valve. We run the system in both modes, monitor pressures and temperatures, and listen for abnormal sounds. This dual-mode testing isolates whether the problem affects heating, cooling, or both at once.
- Measure refrigerant pressure and superheat in heating mode
- Measure refrigerant pressure and subcooling in cooling mode
- Test compressor electrical terminals and capacitor
- Verify the reversing valve switches between heating and cooling
- Check airflow through ducts and at all vents
- Test the backup electric heater activation sequence
Once we've tested both cycles, we explain what we found in plain language. A low refrigerant reading, for example, means a leak—we'll show you the pressure data. A failed compressor shows up as excessive current draw or zero refrigerant flow. We provide a written estimate detailing the problem, repair solution, parts needed, labor, timeline, and comparison to replacement cost if relevant to your situation.
- Itemized parts list with pricing
- Labor cost based on repair complexity
- Expected repair timeline and warranty coverage
- Comparison to full system replacement (if applicable)
- Financing options for major repairs
Once you approve, our technicians proceed. Whether it's soldering a refrigerant line, replacing a reversing valve, repairing ductwork, or installing a new compressor, we follow manufacturer specifications and EPA refrigerant handling regulations exactly. We recover old refrigerant properly, install new components with correct torquing, and recharge to OEM specification using accurate scales and gauges.
- Recover old refrigerant per EPA requirements
- Replace failed compressor, valve, or other component
- Solder refrigerant lines with proper brazing technique
- Install new soft-start capacitor or contactor if needed
- Recharge refrigerant to manufacturer specification
- Verify proper oil circulation in cooling and heating
Once we repair your heat pump, regular maintenance prevents future failures. We recommend annual tune-ups before heating and cooling seasons, checking refrigerant charge, inspecting coils, testing electrical components, and catching early signs of wear before they become bigger problems. Joining our maintenance plan locks in discounted service rates and priority scheduling for the years ahead.
- Schedule annual maintenance before seasons change
- Explain filter replacement frequency and importance
- Review early-warning signs of future problems
- Discuss maintenance plan enrollment and member benefits
A successful repair must prove itself under real conditions. We run the system in both heating and cooling, verify refrigerant pressures in each mode, confirm adequate airflow, measure temperature differential, and test thermostat response. Before we leave, the heat pump must deliver the comfort you expect in both seasons. We provide a detailed invoice documenting the repair, the test data we recorded, and the warranty terms that now apply.
- Run full heating and cooling cycle tests
- Verify refrigerant charge accuracy in both modes
- Confirm airflow and temperature performance
- Document all pressures and temperatures in writing
- Provide warranty information and next-step recommendations
COMMON REPAIRS
Specific Heat Pump Repairs We Handle
Refrigerant Leak Detection, Repair & Recharge
A leaking refrigerant line or fitting reduces cooling and heating performance, eventually damaging the compressor. We use electronic leak detection, pinpoint the source, repair the leak with proper brazing, recover old refrigerant per EPA standards, and recharge to OEM specification. Refrigerant work requires EPA certification and specialized equipment.
Reversing Valve Replacement
The reversing valve switches the heat pump between heating and cooling. If it sticks or fails, the system gets stuck in one mode. We test the valve's response, and if it's stuck or sluggish, we replace it. The replacement is swift and restores both heating and cooling function.
Compressor Repair or Replacement
The compressor is the heart of any heat pump. If it fails, your options are a rebuilt compressor, a new compressor, or full system replacement. We'll explain the cost and longevity of each option and help you decide based on your unit's age and history.
Capacitor & Contactor Replacement
A failed capacitor or contactor prevents the compressor or fan from starting. These components are among the least expensive repairs and can be replaced in under an hour. We stock common sizes and test the replacement to confirm full function.
Blower Motor or Fan Replacement
The indoor blower circulates heated or cooled air through ducts; the outdoor condenser fan sheds heat. If either fails, the system loses performance. We replace failed motors with OEM or equivalent parts and verify smooth, quiet operation.
Evaporator or Condenser Coil Cleaning
Dirty coils reduce heat transfer, cutting both heating and cooling capacity. We clean coils chemically and mechanically, removing dirt, rust, and debris. Coil cleaning often restores performance without major repair costs.
Ductwork Repair & Sealing
Leaky ductwork wastes heating and cooling energy and reduces room-to-room temperature balance. We identify leaks using smoke detection or pressure testing, seal them with mastic or metal tape, and verify the repair with airflow testing.
Thermostat Testing & Replacement
A faulty thermostat may not call for heating or cooling, leaving you at set temperature. We test thermostat response in both modes and upgrade to a programmable or smart model if needed for better control and energy savings.
FREQUENTLY ASKED QUESTIONS
Common Questions About Heat Pump Repair
Repair costs depend on the failed component—a simple component like a capacitor or valve ranges from minor to moderate cost, while compressor repair or replacement is a more significant investment. We provide a written estimate before starting any work, so you'll know the cost upfront. Financing options are available for major repairs through our lending partners.
If your heat pump is relatively new and the repair cost is reasonable, repair often makes sense. If it's aging, has a history of major repairs, or the repair cost approaches what a new system would cost, replacement is usually smarter. We'll break down both options honestly so you can make an informed decision.
Common causes include low refrigerant, a stuck reversing valve, a failed compressor, a clogged filter, or ductwork blockage. We test refrigerant pressure in heating mode, verify the reversing valve switches, and check the backup electric heater sequence. One of these usually explains the loss of heat you're experiencing.
Simple repairs like capacitor replacement take 1–2 hours in most cases. Compressor replacement or refrigerant leak repair might take 3–4 hours or require a follow-up visit if ductwork modifications are needed. We estimate the timeline during the diagnostic call so you can plan around it.
Yes. We back all repairs with a parts and labor warranty. If the same component fails within a year due to our work, we'll fix it at no charge. Manufacturer warranties on new parts also apply depending on what was replaced, and we'll explain exactly what's covered.
Short-cycling—turning on and off every few minutes—usually means low or high refrigerant charge, a clogged filter or coil, low airflow, or a thermostat problem. Constant short-cycling wastes energy and prevents reaching set temperature. We diagnose and fix the root cause rather than just resetting the system.
No. Running a compressor with low refrigerant can cause it to overheat and fail. If you suspect a leak, turn the system off and call us. We'll find and repair the leak, then recharge to proper levels. Running with low refrigerant turns a fixable leak into an expensive compressor replacement.
The backup (auxiliary) electric heater is a supplement on very cold days, not a primary heat source. If it's running constantly, the compressor isn't working—likely a failed compressor, refrigerant leak, or reversing valve stuck in cooling. We'll diagnose the main heating fault and restore normal operation.
Annual tune-ups in spring and fall keep your heat pump efficient and catch problems early, before they turn into expensive failures. We check refrigerant levels, clean coils, test electrical components, and verify both heating and cooling function. Changing your air filter every 1–3 months also protects system performance and reduces wear.
Yes. We repair Armstrong Air, Ducane, Mitsubishi Electric, Fujitsu, and most other ducted heat pump brands on the market today. We stock parts for common models and can source components for less common units. Bring your system's model and serial number so we can verify part availability upfront.
Service Area
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Heat Pump Repair Service Available Throughout Worth & Nearby Communities
MH HVAC proudly serves Worth, Illinois and the surrounding southwest Chicago suburbs, bringing the same family-owned service and Armstrong Air-backed equipment to every community we reach. No matter where you're located within our service footprint, you can expect the same responsive scheduling, honest communication, and quality workmanship our neighbors have come to rely on since 2018.
Greater Chicago Area
Additional Communities Served
Don't see your city listed? MH HVAC serves additional communities throughout Chicago's southwest suburbs beyond our primary service area — reach out and we'll let you know if we cover your address.
KEEP YOUR HOME COMFORTABLE
Complete Heat Pump & HVAC Solutions
Heat Pump Maintenance & Tune-Ups
Annual maintenance prevents costly repairs. We clean coils, test components, and ensure both heating and cooling perform optimally all year long.
Heat Pump Installation & Replacement
Ready to upgrade to a new, high-efficiency heat pump? We handle sizing, installation, and full system commissioning from start to finish.
Central AC Repair
If you need AC repair for a separate cooling system, we handle that with the same diagnostic expertise and transparent pricing.
Furnace Repair & Service
For heating-only issues, our furnace repair service brings the same diagnostic rigor and warranty coverage to every call.
Mini-Split Repair & Service
Ductless heat pumps in specific rooms or zones receive specialized diagnostics and repair from our trained technicians.
Indoor Air Quality Solutions
After repair, enhance your heat pump's performance with air filters, UV lights, and humidity control for cleaner air.
GET IT FIXED RIGHT
A Trusted Heat Pump Repair Contractor in Worth, IL
Heat pump repair requires both refrigeration expertise and ductwork knowledge—two skills that often live in different companies. MH HVAC brings both under one roof. Whether your system won't heat, won't cool, or has lost efficiency, we diagnose the real problem, provide a transparent estimate, and repair it to last rather than offering a quick patch that fails again next season. Our family-owned company has served Worth homeowners since 2018 with honest diagnostics, fair pricing, and quality workmanship on every call. Learn more about our company and check our current specials to maximize your savings on repair service.
When your heat pump stops working, don't wait for the season to get worse. Contact us for a diagnostic appointment. We'll test both heating and cooling cycles, identify the problem, and provide a written estimate before any work begins. We serve all five surrounding communities and stock common parts needed for most heat pump repairs.
Financing makes major heat pump repairs budget-friendly: We partner with Wisetack to spread large repair costs over manageable monthly payments, so you can restore comfort without financial stress.
Regular maintenance prevents future repairs: our maintenance plan includes annual tune-ups before heating and cooling seasons, priority scheduling, and member-exclusive discounts on any repair work that comes up.
Family & Locally Owned Since 2018
Built on years of hands-on HVAC experience in the southwest suburbs.
Armstrong Air & Ducane Dealers
Authorized Armstrong Air dealer with Ducane as our alternative line.
Military & First Responder Discounts
A small thank-you for those who serve.
Flexible Financing Options
Flexible payment terms that fit your household budget