Regular Heat Pump Maintenance In The Lowcountry
My Three Sons HVAC recommends heat pump maintenance twice a year for Charleston, SC homes, once before the cooling season and once before the heating season, because Lowcountry heat pumps run nearly year-round. Each visit covers electrical and mechanical testing, refrigerant readings, outdoor coil cleaning, drain clearing, thermostat calibration and ductwork checks. The Family Maintenance Program costs $195 a year for one system and includes both visits, 15% off repairs and priority scheduling. Call (843) 353-3135.
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Local Heat Pump Maintenance In Charleston, SC
Our licensed and insured team (SC License CLM.117596) has nearly 20 years of combined hands-on HVAC experience across the Charleston Lowcountry. Every visit reflects our core values of honesty, integrity, and kindness, and the straight, no-pressure advice we'd give our own family.
Heat pumps in the Charleston area should be serviced twice a year: once in spring before the cooling season and once in fall before the heating season. A heat pump here heats and cools, so it barely gets a day off. Regular maintenance catches small problems before they turn into a no-cool call in July, and keeps your system running as efficiently as the day it was installed.
Professional Heat Pump Maintenance
If your heat pump pushes air through ductwork and needs maintenance our team will help recommend some proactive measures to keep your system running smoothly and efficiently.
Professional Ductless Heat Pump Maintenance
Ductless heat pump units need regular maintenance as well. Let our team review your ductless system and recommend a proactive maintenance schedule, that can help extend the lifetime of your system.
How Often Should a Heat Pump Be Serviced?
Twice a year. A furnace only works in winter and a straight AC only works in summer, but a heat pump carries both seasons. That doubles the hours on the compressor, fan motors and electrical parts.
A spring visit gets it ready for the humidity and heat; a fall visit makes sure it switches into heating cleanly and defrosts the way it should.
Have an AC-only system instead? See our AC maintenance page.
Cooling season prep
Gets your system ready for Lowcountry heat and humidity before the first no-cool call of summer.
Heating season prep
Makes sure the system switches into heating cleanly and defrosts the way it should.
What's Included in a Heat Pump Maintenance Visit
Every Family Maintenance visit covers the same checklist, so nothing gets skipped.
Inspection and testing of electrical components (capacitors, contactors, wiring)
Inspection and testing of mechanical components (motors, fans, belts where present)
Refrigerant level readings
Cleaning the outdoor coil to remove dirt and debris
Clearing the condensate drain, which matters in our humidity
Ductwork condition check
Ductwork performance check
Thermostat calibration and a test of the system controls
An efficiency and overall system health check, with honest notes on anything that needs attention
If we find something that needs a heat pump repair, we explain it in plain language and give you a price before doing any work. There's no pressure to fix something today that can wait.
Why Maintenance Matters More in the Lowcountry
Humidity and clogged drains
Charleston's humidity means your system pulls a lot of water out of the air. When the condensate drain clogs, that water backs up, and a safety switch may shut the system down or the water ends up on your ceiling. Clearing the drain is one of the simplest things we do and one of the most useful.
Salt air and outdoor coils
Homes near the harbor, the marsh and the islands see faster corrosion on outdoor coils and fins. It's a big part of heat pump maintenance in Mount Pleasant and on the islands. We look for early corrosion and damage so you're not surprised by a failed coil.
Year-round wear
With little downtime between seasons, worn capacitors and contactors are some of the most common failures we see. Testing them on a maintenance visit is a lot cheaper than replacing them on a hot Saturday. If a system is near the end of its life, we'll tell you straight whether heat pump replacement makes more sense.
What You Can Do Between Visits
A few minutes a month keeps your heat pump breathing easy between our visits. Anything beyond these steps, leave to a licensed technician.
- Check your air filters monthly and change them when they look dirty, especially during spring pollen season. Our guide to the MERV rating helps you pick the right one.
- Keep 2 feet of clear space around the outdoor unit and trim back shrubs and vines
- Clear leaves and debris off the top of the outdoor unit
- Keep supply and return vents open and unblocked by furniture
- Call us if you see ice that won't clear, hear new noises, or notice the system running on emergency heat
The Family Maintenance Program
The easiest way to stay on schedule is our Family Maintenance Program. It's built for Lowcountry homes and includes:
- 2 annual visits: one heating season visit (winter prep) and one cooling season visit (summer prep)
- 15% off all repairs
- Priority scheduling over new and non-member customers
If we installed your system, your first year of maintenance is already included under the MTS Installation Advantage.
for one system, both seasonal visits included
How Much Does Heat Pump Maintenance Cost?
A one-time heat pump tune-up for non-members is $150 per system. For $195 a year, the Family Maintenance Program covers both seasonal visits on one system and takes 15% off repairs, so most homeowners find the program is the better value.
One-time tune-up
- One maintenance visit
- Full maintenance checklist
- Second seasonal visit
- 15% off repairs
- Priority scheduling
Family Maintenance Program
- Two seasonal visits (spring and fall)
- Full maintenance checklist, both visits
- 15% off all repairs
- Priority scheduling
- Built for Lowcountry homes
Our Guarantee & What to Expect
When you book heat pump maintenance with My Three Sons HVAC, you get a clear, upfront price before any work begins. No surprises and no pressure. We stand behind our work.
What Your Neighbors Say
"Punctual, very efficient and thorough. Very satisfied with the service provided. Would recommend to anyone looking for HVAC maintenance."
"My Three Sons technicians have been very professional and thorough since we have started our bi annual maintenance plan. They have always taken the time to explain things clearly to us and make us feel valued."
"Their techs are knowledgeable, offer advice freely, and know their stuff! I'm so glad I invested in their bi-annual maintenance plan. They also send you information via text when your Tech guy is going to arrive. They really are worth the money!"
Why Charleston families trust My Three Sons HVAC
Ready for relief? Let's get your home comfortable again.
Book your heat pump tune-up or join the Family Maintenance Program with a local, family-owned team.
Heat Pump Maintenance FAQ
How often should a heat pump be serviced?
Twice a year: once in spring before the cooling season and once in fall before the heating season. In the Charleston area a heat pump runs nearly year-round, so it needs more attention than a system that only cools or only heats.
What does heat pump maintenance include?
A My Three Sons HVAC maintenance visit includes testing electrical and mechanical components, refrigerant level readings, cleaning the outdoor coil, clearing the condensate drain, checking ductwork condition and performance, calibrating the thermostat, testing system controls, and an overall efficiency and system health check.
Is heat pump maintenance worth it?
Yes. Maintenance catches worn parts like capacitors and clogged drains before they cause a breakdown, keeps the system running efficiently, and helps it last longer. In the Lowcountry's heat and humidity, that can prevent a mid-summer no-cool call.
What's included in the Family Maintenance Program?
Two maintenance visits a year (one before heating season and one before cooling season), 15% off all repairs, and priority scheduling over new and non-member customers.
Can I do heat pump maintenance myself?
You can change filters monthly, keep the outdoor unit clear of plants and debris, and keep vents open. Electrical testing, refrigerant readings and coil and drain service should be done by a licensed technician.
Why is my heat pump running on emergency heat?
Emergency or auxiliary heat usually means the heat pump isn't keeping up, often because of a defrost, refrigerant or control problem. It raises your power bill quickly, so it's worth having it checked.
Family Maintenance Program
Detect & prevent heating and air conditioning problems before they start (and enjoy some added perks) with our HVAC maintenance program, designed for Lowcountry families.
Why My Three Sons Heating and Air?
Most heat pump maintenance services you don’t want to take on yourself (DIY).
Built upon our core values of honesty, integrity and kindness, we aim to be your trusted, local heat pump maintenance specialists and all of your residential heating and air conditioning needs.
