AC Repair & HVAC Service in Summerville, SC
My Three Sons HVAC provides AC repair, heat pump service, ductless mini-splits, and HVAC replacement and maintenance for homes in Summerville, SC, including the 29483, 29485 and 29486 zip codes and neighborhoods such as Nexton, Cane Bay Plantation, Summers Corner, The Ponds, Wescott Plantation and Lakes of Summerville. Locally owned, licensed under SC License CLM.117596, and reachable at (843) 353-3135.
Written by Dale · Reviewed for accuracy by Michael · Updated November 9, 2026
HVAC Problems We See in Summerville Homes
Summerville runs from brand-new neighborhoods like Nexton and Cane Bay to older homes near the historic downtown, and each brings its own heating and cooling problems.
New construction and builder-grade systems
A lot of Summerville's newer neighborhoods, like Nexton, Cane Bay Plantation and Summers Corner, were built with builder-grade systems and air handlers in hot attics. They often work fine the first few years, then start showing clogged drains, airflow problems and rooms that don't stay comfortable. A good first maintenance visit can catch most of that early.
Older homes near downtown
Older Summerville homes can have ductwork that's leaking, undersized or hard to reach, and additions the original system was never designed to cool. Duct repairs or a ductless mini-split for the problem rooms are often the fix.
Heat, humidity and pollen
Summerville sits inland, so summer afternoons run hot and the humidity rarely lets up. Spring pine pollen clogs filters fast. Changing your filter monthly in spring and keeping the condensate drain clear prevents a lot of summer service calls.
HVAC Services for Summerville Homes
Repair, replacement, installation, maintenance and ductless service for every kind of Summerville home, from new builds in Nexton to older houses near downtown.
HVAC Repair Services
Warm air, weak airflow, a frozen line or a system that won't turn on. We find the actual cause and give you options before we start.
AC Repair in Summerville
When your AC quits on a hot inland afternoon, we track down the real cause, whether it's a failed part, a clogged drain or an airflow problem, and give you a price before we fix it.
AC repairHeat Pump Repair
Many Summerville homes, especially newer builds, heat and cool with a heat pump. We repair ducted and ductless systems that run most of the year.
Heat pump repairFurnace Repair in Summerville
For Summerville homes with a gas furnace, we find out what's keeping the heat from coming on so your family stays warm on cold nights.
Furnace repairHVAC Replacement Services
When a system is past its useful life, we size a new one to your home and back it with the MTS Installation Advantage: a quality control inspection, an extended labor warranty and one year of free maintenance.
AC Replacement in Summerville
Builder-grade systems in newer neighborhoods and aging units in older homes both wear out. When repairs stop making sense, we size a new system to your home.
AC replacementHeat Pump Replacement
A heat pump that runs most of the year eventually wears out. We replace it with a system sized for a Summerville summer and a winter cold snap.
Heat pump replacementFurnace Replacement in Summerville
Upgrade an aging gas furnace before winter so you're not wondering whether it will start.
Furnace replacementHVAC Installation Services
Building, adding on or putting in a system for the first time? New installations keep you cool in summer, warm in winter, and are backed by the MTS Installation Advantage.
AC Installation in Summerville
From additions on older homes to a finished bonus room, we install AC sized for the space and for Summerville's heat and humidity.
AC installationHeat Pump Installation
One system for both seasons, a good fit for Summerville's long cooling season and mild winters.
Heat pump installationFurnace Installation in Summerville
Get a new gas furnace installed and keep your Summerville home warm through the winter.
Furnace installationHVAC Maintenance Services
Keep a good system from going bad. Our Family Maintenance Program includes two visits a year, 15% off repairs, and priority scheduling.
AC Maintenance in Summerville
Spring pine pollen and summer humidity are hard on cooling systems. A tune-up before summer catches clogged filters and drains before they turn into a no-cool call.
AC maintenanceHeat Pump Maintenance
Twice-a-year visits for a system that works almost every day of the year, so it lasts longer and runs efficiently.
Heat pump maintenanceFurnace Maintenance in Summerville
A check before the first cold snap, so your furnace is ready when temperatures drop.
Furnace maintenanceDuctless Air Conditioning Services
Ductless mini-splits are a good fit for bonus rooms, additions, garages turned into living space and older homes without ducts. See our ductless mini-split services.
Ductless Mini-Split Installation
Comfort for rooms the central system can't reach, like a bonus room over the garage or an addition on an older home.
Ductless servicesDuctless Mini-Split Repair
Honest, local repair for ductless units in Summerville, from no-cool calls to drain and airflow problems.
Ductless servicesDuctless Mini-Split Replacement
Replacing an aging mini-split made easy for Lowcountry families, with a new unit sized to the room.
Ductless servicesDuctless Mini-Split Maintenance
Regular cleaning and checks keep a good ductless unit from going bad, especially through the humid months.
Ductless servicesNot sure what you need?
Tell us what your system is doing and we'll give you an honest diagnosis and a clear price first.
Summerville Zip Codes and Neighborhoods We Serve
We serve all of Summerville, including the 29483, 29485 and 29486 zip codes and neighborhoods like Cane Bay Plantation, Lakes of Summerville, Wescott Plantation, Nexton, The Ponds, Summers Corner, White Gables and Ashborough East, plus nearby Ladson and Goose Creek.
Also nearby: HVAC in Ladson and HVAC in Goose Creek.
How Fast Can You Get to Summerville?
Summerville is part of our regular route from the Hanahan shop, straight up I-26. Call (843) 353-3135 early in the day for the best chance at a quick appointment. Family Maintenance Program members get priority scheduling. AC out completely? See our emergency AC repair page for what to check while you wait.
What Does AC Repair Cost in Summerville?
Our diagnostic fee is $85 to $150 per system, depending on the appointment date and time, the type of system and the property. The price of the repair depends on the part and labor involved, and you'll have the full price before we begin. Military, first responder and educator discounts apply.
Depends on the appointment date and time, the type of system and the property. You get the full repair price before any work begins.
Our Guarantee & What to Expect
When you book HVAC with My Three Sons HVAC, you get a clear, upfront price before any work begins. No surprises and no pressure.
Service work is covered by a one-year workmanship warranty from the date of service: if anything related to our workmanship needs attention, we take care of it at no cost to you (it doesn't cover misuse, lack of maintenance or outside causes).
New system installations are backed by the MTS Installation Advantage, which includes an extended labor warranty. We stand behind our work.
What Your Neighbors Say
"Our technician, Dale, was prompt, friendly, extremely knowledgeable, and highly professional. He took the time to thoroughly troubleshoot our air conditioning system, clearly explained what was causing the problem, made the necessary repairs, and then carefully verified that everything was working properly before he left."
"We needed a complete replacement of our duct work, and My Three Sons were outstanding. The crew was organized and courteous and tried to leave a minimal footprint around the house. The job was done well and priced very fairly."
"3 Sons is my go to for my home and our rental properties. This team is the best I've used in the Charleston area and I wouldn't go anywhere else."
Why Charleston families trust My Three Sons HVAC
Ready for relief? Let's get your home comfortable again.
Honest AC repair, heat pump service and replacement for Summerville homes, from a local, family-owned team.
Summerville HVAC FAQ
Do you offer AC repair in Summerville, SC?
Yes. My Three Sons HVAC provides AC repair, heat pump service, ductless mini-splits and HVAC replacement and maintenance throughout Summerville, including the 29483, 29485 and 29486 zip codes.
My Nexton or Cane Bay home is only a few years old. Why is the AC struggling?
Newer homes often have builder-grade systems and air handlers in hot attics. Clogged condensate drains, dirty filters and airflow problems are common in the first few years, and most are caught with a maintenance visit.
Can you service a system that's still under the builder's warranty?
Yes, we can service it. We don't bill builders for warranty work, but we do work with the manufacturer's parts warranty, and we'll give you detailed documentation of what we found and fixed if you need to share it with your builder.
Which Summerville neighborhoods do you serve?
All of them, including Cane Bay Plantation, Lakes of Summerville, Wescott Plantation, Nexton, The Ponds, Summers Corner, White Gables and Ashborough East.
How often should I change my air filter in Summerville?
Check it monthly and change it when it looks dirty. During spring pine pollen season, many Summerville homes need a new filter every month.
My Three Sons HVAC Around The Lowcountry
We love working in the Lowcountry and keeping Charleston area families cool & comfortable year round.
Why Hire My Three Sons Heating And Air?
HVAC installations, repairs, replacements and most maintenance aren't something the average homeowner near Summerville should perform themselves.
Built upon our core values of honesty, integrity and kindness, we aim to be your trusted, local heating and air company for all of your residential heating and air conditioning needs.
