Attic Insulation in Henderson County, NC

Henderson County and Its Homes

Henderson County grew 5 percent from 2020 to 2025, to 122,375 people by the Census Bureau's estimate, in about 58,000 housing units.

Its five incorporated towns each have a page here: Hendersonville, Fletcher, Mills River, Flat Rock and Laurel Park. About 35 percent of Henderson County's housing units are inside town limits, the rest in unincorporated areas.

Brick storefronts and parked cars along Main Street in downtown Hendersonville — Historic Main Street in Hendersonville, North Carolina; Hendersonville is the largest town in Henderson County. Photo: Mx. Granger, CC0, via Wikimedia Commons

Henderson County at a Glance

Population: 122,375 (2025), 116,564 (2020)
Housing units: about 58,000
Median year built: 1990 (North Carolina: 1991)
Built before 1980: 35% (statewide: 34%)
Detached houses: 69%
Mobile homes: 15%
Owner-occupied: 75%
Heated with electricity: 60% (statewide: 65%)
Climate zone: 4 on both maps
Towns with pages here: 5

Census Bureau estimates for Henderson County (housing: 2020 to 2024).

Towns and Communities in Henderson County

Hendersonville
15,867 people · median home 1987 · Duke Energy
Fletcher
8,373 people · median home 2001 · Duke Energy
Mills River
7,504 people · median home 1997 · Duke Energy
Flat Rock
3,643 people · median home 1992 · Duke Energy
Laurel Park
2,360 people · median home 1982 · Duke Energy

Unincorporated communities the Census Bureau maps in Henderson County: Etowah (about 3,700 housing units, median year built 1988), East Flat Rock (about 2,300 housing units, median year built 1982), Dana (about 1,600 housing units, median year built 1991), Mountain Home (about 1,500 housing units), Fruitland (about 1,400 housing units, median year built 1992), Valley Hill (about 1,300 housing units, median year built 1988), Edneyville (about 1,300 housing units), Horse Shoe (about 750 housing units), Hoopers Creek (median year built 1990), Balfour, Barker Heights and Gerton.

What We Do in Henderson County

Attic Insulation in Henderson County
Some 35 percent of Henderson County housing units predate 1980; joists showing above their insulation mean more blown-in fiberglass is due, R-60 from bare.
Attic Insulation Removal in Henderson County
Wet, moldy or animal-soiled insulation comes out of Henderson County attics, and a mouse-soiled Henderson County attic is sanitized and deodorized; in the 14 percent of homes built before 1960, vermiculite is ruled out first.
Air Sealing in Henderson County
Some 60 percent of Henderson County homes heat with electricity, often through attic ducts; their joints and the ceiling's gaps are sealed first.

Homes in Henderson County

Half of Henderson County's 58,000 housing units were built before 1990: 21 percent before 1970, 35 percent before 1980 (nearly all before the state's 1978 insulation rule) and 13 percent in 2010 or later. The largest share went up in the 2000s, under codes that asked for less than ENERGY STAR now suggests; ENERGY STAR notes insulation is often thinnest at the eaves. Among Henderson County towns, the median home is oldest in Laurel Park (1982) and newest in Fletcher (2001).

Henderson County by type: 69 percent detached houses, 11 percent in buildings of two or more homes and 15 percent mobile homes. In Henderson County, 60 percent of homes heat with electricity, 26 percent with piped gas, 6 percent with tank gas, 3 percent with oil or kerosene and 3 percent with wood.

Henderson County Homes by Year Built

Before 1940: about 2,640 units, 5% (±1)
1940s: about 1,400 units, 2% (±1)
1950s: about 3,880 units, 7% (±1)
1960s: about 4,130 units, 7% (±1)
1970s: about 7,990 units, 14% (±1)
1980s: about 9,000 units, 16% (±1)
1990s: about 10,580 units, 18% (±1)
2000s: about 10,710 units, 18% (±1)
2010s: about 6,400 units, 11% (±1)
2020 or later: about 1,310 units, 2% (±1)

Climate Across Henderson County

NOAA 1991 to 2020 normals for Henderson County towns, by station: Hendersonville 1 NE station (Hendersonville, Flat Rock and Laurel Park): about 4,170 heating and 900 cooling degree days; Asheville Regional Airport station (Fletcher and Mills River): about 3,840 heating and 1,050 cooling degree days.

Power and Gas in Henderson County

The card lists Henderson County's town utilities by the territory maps; a power bill confirms the one at an address. The territory map does not split Duke Energy's two North Carolina companies in Henderson County; their programs are the same, and the power bill names the one at an address.

Enbridge Gas North Carolina holds the Henderson County gas franchise (NC Utilities Commission map), and 26 percent of Henderson County homes heat with piped gas.

Who Supplies Power in Henderson County

Duke Energy: Hendersonville, Fletcher, Mills River, Flat Rock and Laurel Park

Energy Programs for Henderson County Homes

Check each program's current terms for a Henderson County home; some pay only through the utility's contractor network. Insulation Pros is an approved Duke Energy trade ally for Duke's rebate.

Programs for Henderson County

Smart $aver Insulate and Seal (Duke Energy rebate; Hendersonville, Fletcher, Mills River, Flat Rock and more).
Home Energy House Call (Duke Energy home assessment; Hendersonville, Fletcher, Mills River, Flat Rock and more).
Income-qualified Weatherization (Duke Energy income-qualified; Hendersonville, Fletcher, Mills River, Flat Rock and more).
ThermWise Weatherization Assistance (Enbridge Gas; Henderson County gas customers): no-cost weatherization for gas customers, income-qualified.
Energy Saver North Carolina (statewide income-qualified; any Henderson County address).
Weatherization Assistance Program (statewide income-qualified; any Henderson County address).

Get Your Free Estimate

or call (336) 870-3893

Henderson County Insulation FAQs

Do you serve all of Henderson County?

Yes: Hendersonville, Fletcher, Mills River, Flat Rock and Laurel Park, and every unincorporated Henderson County address.

Which utilities offer insulation rebates in Henderson County?

Duke Energy's Smart $aver Insulate and Seal (Hendersonville, Fletcher, Mills River, Flat Rock and more).

Does attic insulation in Henderson County need a permit?

Ask Henderson County Permits & Inspections before work starts. For an address in Hendersonville, Fletcher, Mills River or another Henderson County town, the town or city hall can tell you whether Henderson County's office handles its permits.