Air Duct Cleaning Cost in Mount Pleasant, South Carolina
Our 2026 estimate for air duct cleaning in Mount Pleasant, SC is $470 to $1,070 (whole house). That puts Mount Pleasant 34% above the national average, mainly because of higher incomes and home values, which push labor rates up.
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Mount Pleasant Weather and HVAC Load
NOAA's 1991-2020 climate normals put Mount Pleasant at 2,051 heating degree days and 2,279 cooling degree days per year. Neither season dominates in Mount Pleasant. That balance is a big reason heat pumps and dual-fuel systems sell well in South Carolina. On average, Mount Pleasant gets 18 freezing nights and 55 days above 90°F per year.
| Heating degree days / year | 2,051 |
|---|---|
| Cooling degree days / year | 2,279 |
| Nights at or below 32°F | 18 |
| Days above 90°F | 55 |
| Average low / high | 55.3°F / 75.8°F |
Mount Pleasant Housing Stock
Census figures put the median build year in Mount Pleasant at 2000, so a typical house here has about 26 years on it. Plenty of houses from this period still run original 1990s or early-2000s equipment, which is past its expected service life. Mount Pleasant has roughly 29,000 owner-occupied homes, or 73.7% of households. Homes here have a median value of $667,100 and households a median income of $121,364. Those two numbers drive the labor adjustment in our estimate.
NOAA storm reports for Charleston County show 11 hail days and 34 days with damaging thunderstorm winds over the six years from 2020 to 2025. The largest hail reported was 1.25 inches across. Hail flattens the thin aluminum fins on condenser coils and cuts airflow. After a big storm, take a look at the outdoor unit; homeowners insurance often covers the damage. Charleston County also had 8 tornado days in that period. In Mount Pleasant, 18% of residents are 65 or older. For older adults, a house with no heat in January or no AC during a heat wave is a medical risk. Mention it when you call, since many companies put those calls first.
When to Book It
- You just finished a remodel
- Signs of mice or insects in the ducts
- Dust puffs out of the vents when the system starts
- A musty smell after a leak or flood
What Moves the Price
- Sanitizing or mold treatment
- Adding a dryer vent cleaning
- How hard it is to reach ducts in the attic or crawlspace
- House size and duct layout
- How many supply and return vents the house has
For Mount Pleasant we raised the national figures about 34%, based on local income, home values and climate-based equipment sizing. Get at least three written quotes; real bids can land outside this range.
What the Quote Should Cover
- Inspecting the supply and return ducts
- Cleaning under negative pressure with a truck or portable vacuum
- Before-and-after photos
- Cleaning the blower compartment
- Cleaning the registers and grilles
South Carolina Permits, Efficiency Rules and Rebates
South Carolina is in the DOE's Southeast region, where new split central air conditioners need at least 14.3 SEER2 (13.8 SEER2 for systems of 45,000 BTU/h and up).
Before You Hire
- Ask whether the company follows NADCA standards.
- If the ducts leak, have them sealed during the same visit.
- Put in a new filter as soon as the cleaning is done.
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Air Duct Cleaning Questions from Mount Pleasant Homeowners
How much is air duct cleaning in Mount Pleasant?
Plan on $470 to $1,070, with most jobs near $800. Equipment efficiency, house size and the condition of the ducts and wiring decide where your quote falls.
When is the best time to schedule air duct cleaning in Mount Pleasant?
In spring or fall. Those are the slow months between heating and cooling season in Mount Pleasant.
How often should ducts be cleaned?
There's no set schedule. The EPA recommends cleaning when there's visible mold, pests or a lot of debris, not on a routine basis.
Does duct cleaning lower energy bills?
Not by much. Sealing leaky ducts makes a much bigger difference to efficiency and comfort.
Air Duct Cleaning Near Mount Pleasant
- Charleston $400 to $910
- North Charleston $330 to $750
- Rock Hill $330 to $760
- Columbia $320 to $730
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Sullivans Island; NOAA Storm Events Database 2020-2025, Charleston County. Prices are our estimates, not contractor quotes. Updated 2026.