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Heat Pump Repair in Charleston, SC

Providing “Comfort for Life” since 1972

Family-Owned

& Operated Since 1972

Third-Generation

Charleston Company

Trane

Comfort Specialist

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How to Tell Your Heat Pump Needs Repair

Heat pumps are a popular choice in Charleston for good reason. They handle both heating and cooling efficiently, and in a climate with mild winters and long summers, they make a lot of sense. But because a heat pump runs year-round rather than just one season, it also accumulates wear more steadily than a system that gets a real off-season break. Knowing the warning signs of a problem can help you get ahead of a repair before it turns into something more serious.

Here are some signs your heat pump may need attention

  • The system is running but not keeping up with the temperature you’ve set, whether that’s cooling in summer or heating on a cool winter evening
  • You’re noticing unusual sounds coming from the unit, like grinding, rattling, hissing, or squealing, that weren’t there before
  • The outdoor unit is icing up and not clearing on its own, which can happen in heating mode but becomes a problem when it doesn’t defrost properly
  • Your energy bills have climbed without any clear change in how you’re using the system, which often means the heat pump is working harder than it should
  • The system is short cycling, meaning it turns on and off more frequently than normal without completing a full heating or cooling cycle
  • Airflow from your vents feels weak or uneven, leaving some rooms comfortable and others not
  • The system seems to be stuck in one mode and won’t switch between heating and cooling the way it should
  • You’re noticing more humidity inside your home than usual during the cooling months, which can point to a refrigerant or coil issue
If any of these are happening, it’s worth having a technician take a look before the problem gets worse.

Our Services

What Your Neighbors Are Saying About Us

Molly S.
Could not be happier with my experience with Smoak's. Rob went above and beyond to repair my HVAC system quickly and at a great price. He's trustworthy, reliable, and explained everything along the way. I *highly* recommend.
Jeff S.
Smoaks was great! Professional, on time and thorough. The noise we questioned was absent at visit but they assured us if it comes back take a video so they can hear it. They checked several possibilities and gave tips.Since we are under warranty call back with any problems at any time. Joey was really great and Cole made a great partner. Good job guys , thank you!
Jeffrey D.
Zach from Smoak’s Comfort Control conducted the semi-annual maintenance on all of our systems. We appreciate the fact that he took his time to do the work, and did not rush the process. Zach was very diligent and detail-oriented. He is an extremely nice and courteous person who respected our house when doing his work. Very happy with him and Smoak’s!
Tiffany B.
Annual inspection. Tech identified a potential issue and scope of work. Costs provided in quote. SMOAK’s (as usual) does exceptional work. Always honest, dependable, productive and professional technicians. Well done SMOAK’s! Zach was a great tech! Keep up the good work.
R.H.
Al our technician was fantastic. He was extremely knowledgeable, efficient, and honest. We truly had a great experience with Smoaks installing our new hot water heater.
Maeve M.
We used Smoak’s to upgrade the plumbing in the entire house. From the drywall cuts to the valve work everything way excellent, tidy, and efficient! John was attentive and beyond knowledgeable, helping us to fully understand our system. His work reflected attention to detail and mastery of his trade.
Christopher M.
Replacement Package unit installed yesterday (2025-02-11). Josh Roper did a great job on my quote, his knowledge and communication made it easy to go with Smoak's. Quentin did a fantastic job with the install. He is knowledgeable and professional! Highly recommended!
Steve B.
Al Ahner with Smoak’s was a welcome professional to our home. He not only addressed my plumbing needs during his visit, he provided a recommendation related to my gas lantern settings that I greatly appreciate. Al took the time to listen to my needs and provide really sound advice to me.
James V.
Javon Jones performed our prevented maint check from Smoaks Heating and AC. Javon was on time, professional, and did his checks in a deliberate fashion. He ended is maint check by reviewing his findings and recommendations with me. He is exactly what you want as Technician! I will request him again next visit.
Georges K.
Smoak’s Comfort Control did an amazing job with our AC install. They were super responsive and easy to work with, and the communication was great every step of the way. The team was organized, took care of everything, and the quality of their work really shows. We’re extremely happy with the whole experience and wouldn’t hesitate to recommend them to anyone.

Heat Pump Problems We See Most Often in Charleston

After more than 50 years of serving Charleston homeowners, our team has a clear picture of the issues that affect heat pumps in this region most frequently. Some of these are common to heat pumps everywhere. Others are more specific to the demands our coastal, humid climate puts on the equipment.

Here are the heat pump problems we run into most regularly

  • Refrigerant leaks that gradually reduce the system’s ability to heat or cool effectively and cause the compressor to work harder than it should
  • Dirty or frozen coils that restrict heat transfer and force the system to run longer to reach the set temperature, a problem that’s more likely when maintenance has been delayed
  • Failed capacitors or contactors that prevent the system from starting or cause unexpected shutdowns, particularly common after the long run hours Charleston summers demand
  • Defrost control issues that allow ice to build up on the outdoor unit during heating mode without triggering the defrost cycle to clear it
  • Reversing valve problems that prevent the system from switching properly between heating and cooling mode
  • Blower motor wear that reduces airflow and leaves rooms feeling stuffy or unevenly conditioned
  • Corrosion on outdoor unit components caused by salt air exposure, which accelerates wear on electrical connections, coil fins, and cabinet components for homes near the coast
  • Clogged condensate drain lines that cause water to back up or overflow from the indoor unit, especially during the humid months when the system is pulling significant moisture from the air

What Our Heat Pump Repair Service Covers

At Smoak’s Comfort Control, our experienced technicians are equipped to diagnose and repair a wide range of heat pump problems across many equipment brands and configurations. We approach every repair call the same way. We find the actual cause of the problem, explain it clearly, and fix it right.

Our heat pump repair services include

  • Comprehensive system diagnosis covering both indoor and outdoor components to identify the root cause of the problem rather than just treating the symptoms
  • Refrigerant leak detection and recharge to restore proper heating and cooling capacity
  • Capacitor, contactor, and electrical component repair or replacement to get the system starting and running reliably
  • Reversing valve diagnosis and replacement for systems that are stuck in heating or cooling mode
  • Defrost control repair to address ice buildup issues on the outdoor unit during cooler months
  • Blower motor and fan repair or replacement to restore proper airflow throughout your home
  • Coil cleaning and repair to improve efficiency and prevent the freeze-ups and performance losses that come with buildup
  • Condensate drain line clearing and repair to prevent water damage and system shutdowns
  • Thermostat and controls troubleshooting to make sure the system is responding correctly and cycling as it should
We work on a wide range of heat pump brands and take the time to do the job right the first time.

When Your Heat Pump Needs Urgent Attention

Most heat pump problems give you some warning before they become a full breakdown, but not always. Sometimes a component fails without much notice, and in Charleston’s summer heat or on a cold winter night, a heat pump that stops working isn’t something most families can simply wait out.

Smoak’s Comfort Control offers emergency heat pump repair for situations that can’t be put off until the next available appointment. We have technicians available for urgent calls after normal business hours including weekends and holidays, and we treat those calls with the same professionalism and thoroughness as any other job.

If your heat pump has stopped working entirely, if you’re dealing with a refrigerant leak, or if temperatures inside your home have become difficult to manage, give us a call. We’ll work to get a technician out to you as quickly as we can and get your home back to comfort.

Why Charleston Homeowners Call Smoak's for Heat Pump Repair

Smoak’s Comfort Control is a third-generation, family-owned and operated company that has been serving Charleston homeowners since 1972. We’re lifelong Charleston residents, and we’ve spent decades learning how this climate affects home comfort systems in ways that only come from years of hands-on experience in the Lowcountry. We’re not backed by private equity, and we don’t operate with a corporate mindset. We operate like a family that genuinely cares about the people we serve.

Here’s what sets Smoak’s apart

  • Skilled technicians with the training and experience to diagnose and repair heat pump systems correctly the first time
  • Honest assessments with no pressure to approve repairs or replacements you don’t actually need
  • Recognition as the oldest Trane dealer in the Charleston area and a certified Trane Comfort Specialist
  • An A+ rating with the Better Business Bureau earned through more than 50 years of quality work and straightforward service
  • A locally rooted team that understands how Charleston’s heat, humidity, and coastal air affect heat pump performance
  • Emergency service availability for urgent situations on weekends and holidays
  • Financing options available for larger repairs or system replacements when the timing isn’t ideal
  • A family-owned approach that puts your comfort and your trust ahead of everything else
When you call Smoak’s, you’re calling a team that has earned the trust of Charleston families for generations. We take that seriously on every repair call we go on.

Frequently Asked Questions

How do I know if my heat pump needs a repair or a full replacement?
The answer depends on the age of your system, the nature of the problem, and what a repair would cost relative to the system’s remaining useful life. Our technicians will give you an honest assessment of both options so you can make the decision that makes the most sense for your situation and your budget.
This is one of the more common complaints we hear, and it can be caused by several things including low refrigerant, dirty coils, a failing compressor, or a problem with the reversing valve. A technician can diagnose the specific cause and recommend the right repair.
Yes. During heating mode, it’s normal for some frost to develop on the outdoor unit, and the system is designed to defrost itself periodically. If the defrost cycle isn’t working properly, ice can build up significantly and affect performance. This is something our technicians can diagnose and repair.
Salt air accelerates corrosion on outdoor unit components including coil fins, electrical connections, and the cabinet itself. For homeowners closer to the water, this can shorten the lifespan of outdoor equipment more quickly than in inland areas. Regular maintenance helps slow this process and catch corrosion before it causes a failure.
Yes, we offer maintenance plans for heat pump systems throughout the Charleston area. Because heat pumps run year-round, consistent maintenance is especially important for keeping them efficient and catching wear before it leads to a repair call.