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Heat Pump Repair Experts
Ducted Heat Pump Repair Services in Plano, TX
A ducted heat pump is one of the hardest-working pieces of equipment in any North Texas home. It handles both heating and cooling - switching between the two as seasons shift - and that dual responsibility means it runs more hours per year than a standalone air conditioner or furnace. When something goes wrong with your heat pump, it affects your comfort year-round, not just in one season.
At Trotter Air Services, we have been diagnosing and repairing HVAC systems across Plano, TX and the Greater Dallas area since 1970. Three generations of our family have built this business on straightforward service and technical skill. As an Armstrong ProTeam dealer, we bring manufacturer-level expertise to every heat pump repair we perform.
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How Ducted Heat Pumps Work - And Why That Matters for Repairs
Understanding how your ducted heat pump operates helps you recognize when something is going wrong and gives you the context to make informed decisions about repairs. A heat pump does not generate heat the way a furnace does. Instead, it moves heat from one place to another using refrigerant, a compressor, and a reversing valve.
In cooling mode, your heat pump works essentially like a central air conditioner - it pulls heat from inside your home and releases it outdoors. In heating mode, the reversing valve flips the cycle, and the system extracts heat from the outdoor air and moves it inside. Even when outdoor temperatures drop into the 30s and 40s during a North Texas winter, there is enough thermal energy in the air for your heat pump to work effectively. If your home uses a dedicated central air conditioner rather than a heat pump, see our central AC repair page.
This dual-mode operation means your heat pump has components that work under stress in every season:
- Reversing valve - The component that switches your system between heating and cooling. When it fails or sticks, your heat pump may get locked in one mode or the other.
- Compressor - Handles the heavy lifting in both modes. Compressor failures are among the most significant repairs a heat pump can need.
- Defrost control board - Manages the defrost cycle that prevents ice buildup on the outdoor coil during cold weather. A faulty defrost board can cause the outdoor unit to ice over completely.
- Outdoor fan motor - Runs in both heating and cooling modes, moving air across the outdoor coil. In North Texas, this motor endures extreme summer heat and occasional winter ice storms.
- Indoor blower motor - Circulates conditioned air through your ductwork. Bearing failures and capacitor problems are common causes of blower issues.
- Thermostat and control wiring - Heat pump thermostats are more complex than standard AC thermostats because they must manage the reversing valve and auxiliary heat. Wiring issues or a misconfigured thermostat can cause erratic system behavior.
When any of these components malfunction, the symptoms can range from subtle - slightly reduced efficiency or unusual noises - to obvious, like a complete loss of heating or cooling. Our technicians at Trotter Air Services are trained to trace symptoms back to their root causes, not just treat what is visible on the surface.
Our Ducted Heat Pump Repair Process in Plano, TX
Every heat pump repair call from Trotter Air Services follows a structured diagnostic process that we have refined over decades of field work. Heat pumps are more complex than single-mode systems, and accurate diagnosis requires a methodical approach.
Step 1: System History and Symptom Review
Before touching anything, our technician talks with you about what you have observed. When did the problem start? Is it constant or intermittent? Does it happen in heating mode, cooling mode, or both? These details narrow down the likely causes before we even open a panel.
Step 2: Electrical and Control Diagnostics
We test voltage, amperage, and resistance at key points throughout the system - the contactor, capacitors, compressor windings, fan motors, defrost board, and reversing valve solenoid. Electrical issues are responsible for a large percentage of heat pump failures, and catching them requires precise measurement, not guesswork.
Step 3: Refrigerant System Evaluation
We check refrigerant pressures in both heating and cooling modes when applicable. Abnormal pressures can indicate a refrigerant leak, a restriction in the metering device, a failing compressor, or a problem with the reversing valve. We also inspect the line set for damage and the coils for cleanliness and integrity.
Step 4: Airflow and Mechanical Inspection
Restricted airflow is one of the most common contributors to heat pump problems. We check the air filter, inspect the ductwork for obvious issues, evaluate the blower motor operation, and examine the outdoor coil for debris or damage. We also listen for mechanical sounds - bearing noise, compressor slugging, or fan blade contact - that indicate developing failures.
Step 5: Diagnosis, Explanation, and Repair
Once we identify the problem, we explain it to you in plain language. We tell you what failed, why it likely failed, and what the repair involves. You approve the work before we proceed. After the repair, we run the system through a complete cycle and verify performance in the mode that was affected.
Common Ducted Heat Pump Problems in North Texas
The DFW Metroplex climate creates a unique set of challenges for ducted heat pumps. Here are the issues we encounter most frequently in our service area:
Heat Pump Not Switching Between Modes
If your heat pump cools fine but will not heat - or heats but will not cool - the reversing valve or its solenoid coil is usually the culprit. The reversing valve is a specialized component that redirects refrigerant flow, and when it fails, the system gets stuck in one mode. This repair requires precise diagnosis because the symptoms can also be caused by a faulty thermostat or control board.
Outdoor Unit Icing Over in Winter
A thin layer of frost on your outdoor unit during cold weather is normal - your heat pump's defrost cycle handles it automatically. But if the entire outdoor coil is encased in ice, something is wrong. Common causes include a failed defrost control board, a stuck defrost relay, a bad outdoor temperature sensor, or low refrigerant. Allowing the unit to run while heavily iced can damage the compressor and outdoor fan motor.
Heat Pump Running Constantly
In extreme cold, a heat pump may run for extended periods - that is normal when outdoor temperatures drop near freezing. But if your system runs nonstop during moderate weather and never satisfies the thermostat, the problem could be low refrigerant, a dirty outdoor coil, a failing compressor, restricted airflow, or duct leaks allowing conditioned air to escape before it reaches your living spaces.
Short-Cycling
Short-cycling - when your heat pump turns on and off rapidly in quick succession - puts severe stress on the compressor and other electrical components. Causes include an oversized system, a faulty thermostat, a refrigerant overcharge or undercharge, a failing compressor, or an electrical issue like a bad capacitor or loose wiring connection.
Unusual Noises During Operation
Heat pumps make a distinctive sound when switching between heating and cooling modes - a brief whooshing noise as the reversing valve shifts is completely normal. But grinding, screeching, rattling, or banging noises are not. These sounds often indicate bearing failure in a motor, loose hardware, a failing compressor, or debris contacting the outdoor fan blade.
Weak or Lukewarm Airflow
If air from your vents feels barely warm in heating mode or barely cool in cooling mode, the issue may be a failing compressor that cannot fully pressurize the refrigerant, a reversing valve that is partially stuck, a refrigerant leak reducing system capacity, or a blower motor that is not moving enough air.
Many of these symptoms can also be caused or worsened by poor indoor air quality conditions. Dirty ductwork and clogged filters force your heat pump to work harder. Our air filtration and air cleaner services can help reduce the load on your system and improve its performance and longevity.
Why Choose Trotter Air Services for Heat Pump Repair
Three Generations, One Standard
Trotter Air Services was established in 1970 by the Trotter family, and three generations later, we are still here - still family-owned, still operated by the same family, and still committed to the same principles that built this company. When you call us for a heat pump repair, you get a team that treats your home the way we would treat our own.
Armstrong ProTeam Dealer
Our Armstrong ProTeam dealer status gives us factory-trained expertise on Armstrong heat pump systems. We receive advanced technical training, priority parts access, and direct manufacturer support. If you have an Armstrong ducted heat pump, our technicians understand its specific components and control logic at a level that generalist companies simply cannot match.
NATE-Certified Technicians
Every technician we send to your home holds NATE certification - the industry's most respected credential for HVAC technical competence. NATE certification requires passing rigorous exams that cover all aspects of HVAC system diagnosis and repair, and we maintain our certifications through continuous education.
If your Armstrong heat pump has reached the point where repair costs are approaching the value of replacement, we can walk you through your options. Our ducted heat pump installation services include help selecting the right system for your home's size, layout, and efficiency goals.
Already have a different brand? Our technicians service and repair all brands and models of HVAC equipment - regardless of who manufactured or installed it.
The North Texas Climate and Your Ducted Heat Pump
Ducted heat pumps are well-suited to the North Texas climate, but the specific conditions in the DFW Metroplex create stresses that homeowners should understand.
Year-Round Operation in the DFW Metroplex
Unlike a central AC system that only runs during warm months, your heat pump works through every season. During Plano's long, hot summers - when temperatures regularly exceed 100 degrees - your heat pump operates in cooling mode for 12 or more hours per day. In winter, it switches to heating mode, running whenever outdoor temperatures drop below your thermostat's set point. This year-round workload means more operating hours, more wear on components, and a greater need for professional attention.
Seasonal Transitions
Spring and fall in North Texas bring rapid temperature swings. Your heat pump might run in cooling mode during the afternoon and switch to heating mode overnight - sometimes multiple times in a single day. These mode transitions engage the reversing valve repeatedly and cycle the compressor under varying load conditions, which can expose developing component weaknesses.
Ice Storms and Cold Snaps
While North Texas winters are generally mild, the region does experience periodic ice storms and cold snaps that push temperatures into the teens or single digits. During these events, your heat pump's defrost cycle runs frequently, and the system may engage auxiliary heat strips to supplement its output. These extreme conditions stress the defrost controls, outdoor coil, and electrical components.
Proper blown-in insulation in your attic and walls can significantly reduce the load on your heat pump during both summer and winter extremes. Better insulation means your heat pump runs shorter cycles and reaches your set temperature faster, reducing wear and extending equipment life.
Flexible Financing Options
We believe everyone deserves a comfortable home, regardless of budget constraints. That's why we work with trusted financing providers to make quality HVAC equipment accessible to more families across Plano, TX and Greater Dallas.
A new HVAC system is a significant investment, but it's also one that pays dividends in comfort, efficiency, and peace of mind. Our financing options help you spread that investment over time while enjoying the benefits immediately.
Financing Benefits
Quick Application Process
Get approved in minutes without impacting your credit score
No Prepayment Penalties
Pay off your balance early without extra fees
Competitive Interest Rates
Multiple rate options to fit your financial situation
Deferred Interest Options
Special promotional periods available on qualifying purchases
Flexible Payment Terms
Choose monthly payments that work with your budget
Simple Online Management
Easy account access and payment options
Service Finance Company, LLC
Service Finance specializes in home improvement. Their streamlined process and competitive rates make upgrading your HVAC system easier than ever.
Apply NowPreventive Maintenance: The Best Defense Against Heat Pump Breakdowns
Heat pumps benefit even more from regular maintenance than single-mode systems because they run year-round. Our maintenance programs include thorough inspections, cleaning, electrical testing, and refrigerant checks that are specifically tailored for ducted heat pump systems.
We offer both Residential and Commercial maintenance plans through Trotter Air Services. A properly maintained heat pump runs more efficiently, lasts longer, and is far less likely to fail unexpectedly - especially during the extreme weather events that North Texas throws at us every year.
Our maintenance plans are designed to keep your heat pump and your entire HVAC system running at peak performance throughout the year.
Sign Up Today north_east Maintenance Plan DetailsRelated Services for Complete Home Comfort
Your ducted heat pump is one part of a larger comfort system. At Trotter Air Services, we offer comprehensive HVAC and indoor air quality services that work together with your heat pump to keep your home comfortable and your air clean:
Mini-Split Systems
If you are looking for targeted comfort solutions for specific rooms or areas of your home that your ducted system does not reach effectively, our mini-split repair and service team can help maintain ductless systems that supplement your primary heat pump.
UV Light Systems
Maintaining clean indoor air is essential for both comfort and health. Our UV light systems install directly into your ductwork to neutralize airborne pathogens and reduce biological growth on your evaporator coil - improving efficiency and air quality simultaneously.
More Heat Pump Services
Browse everything we offer for heat pump systems in Plano, TX.
Proudly Serving Plano, TX & Greater Dallas Since 1970
For over five decades, we've been the HVAC company that Greater Dallas families call first. Our service area has grown along with the communities we serve, and today we're proud to provide expert heating, cooling, and indoor air quality services throughout the region.
When you call Trotter Air Services, you're not getting a national franchise or an out-of-town contractor who doesn't understand local conditions. You're getting a team of Dallas natives who know the unique challenges our Texas climate presents - from scorching summer heat to unexpected winter freezes.
Serving Communities Around:
Frequently Asked Questions About Ducted Heat Pump Repair in Plano, TX
A central air conditioner only cools your home. A ducted heat pump can both cool and heat by using a reversing valve to change the direction of refrigerant flow. In cooling mode, a heat pump and an AC function almost identically. In heating mode, the heat pump extracts warmth from the outdoor air and moves it inside. This dual capability makes heat pumps an efficient option for climates like North Texas where winters are generally mild.
Common signs include: your system blowing lukewarm or room-temperature air instead of conditioned air, the outdoor unit running but not heating or cooling your home, ice buildup on the outdoor unit that does not clear on its own, the system short-cycling on and off rapidly, unusual grinding or screeching noises, or your energy bills increasing without a change in usage patterns. If you notice any of these, it is worth having a professional inspection.
Yes. Modern ducted heat pumps are designed to extract heat from outdoor air even when temperatures drop into the 30s and 40s. In North Texas, winters are mild enough that a heat pump handles the majority of heating needs efficiently. During the occasional cold snap when temperatures dip into the teens or lower, most heat pump systems have auxiliary electric heat strips that supplement the heat pump's output.
Several things can cause this: the system may be stuck in cooling mode due to a failed reversing valve or solenoid, the compressor may not be running due to an electrical failure, the refrigerant charge may be low from a leak, the defrost cycle may be running temporarily (which is normal for short periods), or the thermostat may be misconfigured. Our technicians diagnose the specific cause rather than guessing.
With proper maintenance, a ducted heat pump in North Texas typically lasts 12 to 18 years. Because heat pumps run year-round, they accumulate more operating hours than a standalone AC or furnace, which can affect their lifespan. Regular professional maintenance is the single most effective way to maximize the life of your heat pump.
It depends on the age of the system, the nature of the repair, and the overall condition of the equipment. A 10-year-old heat pump with a failed capacitor or contactor is absolutely worth repairing. A 17-year-old system with a failed compressor and a history of recurring issues may be a better candidate for replacement. We give you an honest assessment so you can make the best financial decision.
The defrost cycle periodically reverses your heat pump into cooling mode briefly to melt frost off the outdoor coil during cold weather. A light coating of frost during heating season is completely normal, and the defrost cycle handles it automatically. However, if the outdoor unit is heavily iced over or the ice does not clear, the defrost system may have a problem that needs repair.
We repair all major brands of ducted heat pumps. Our deepest expertise is with Armstrong systems due to our ProTeam dealer relationship with the manufacturer. We also regularly service other popular brands across our service area.
We prioritize repair calls and typically offer same-day or next-day service in Plano and the surrounding communities. During peak seasons - summer and the occasional winter cold snap - our schedule can fill quickly, so calling as soon as you notice a problem ensures the fastest response.
Yes, we partner with Service Finance to provide flexible financing options for heat pump repairs and replacements. We discuss your options during the service call so you can choose the approach that works best for your budget.
50+ Years of Trust
Your ducted heat pump keeps your home comfortable through every season - through the triple-digit summer days that bake North Texas, through the unpredictable spring storms, through the occasional ice events that test every system in your home. When that equipment needs repair, you need a team that understands heat pumps at a deep technical level and has the field experience to back it up.
Expert Heat Pump Service
Trotter Air Services has been that team for Plano, TX and the Greater Dallas area since 1970. Three generations of our family have dedicated themselves to honest, skilled HVAC service. We are an Armstrong ProTeam dealer, a BBB Accredited business, and every technician on our team holds NATE certification.
Complete Heat Pump Care
Whether your heat pump has stopped heating, stopped cooling, is making unusual noises, is running constantly, or is icing over - we have seen it before and we know how to fix it. Considering a new heat pump system? Explore our ducted heat pump installation services to learn about the latest Armstrong models available for your Plano home.
