Love Valley, NC
11 miles west
Center about 180 feet higher than Harmony's; 183 people, about a third of Harmony's population
Attic insulation in Love ValleyAttic Insulation in Harmony, NC
Blown-in attic insulation for Harmony, NC, in Iredell County, plus removal and air sealing.
About Harmony and Its Homes
Harmony, in northeastern Iredell County, began around 1850 as Harmony Hill, a camp meeting ground, and was incorporated in 1874 before taking its short name in 1927. A 1978 county inventory found that most buildings in Iredell's small towns, this one included, date from after 1900.
Harmony, in Iredell County, grew from 543 people in 2020 to 619 in 2025 (Census Bureau estimates), on 1.36 square miles. That makes Harmony the fourth-largest town in Iredell County.
Harmony at a Glance
- County: Iredell County
- Population: 619 (2025), 543 (2020), up 14.0%
- Land area: 1.36 square miles (455 people each)
- Housing units: about 330 (±83)
- Climate zone: 4 (state code), 3 (2021 map)
- ENERGY STAR target for Harmony attics: R-49 from bare, R-38 over 3 to 4 inches (R-value guide)
Census Bureau estimates for Harmony, 2020 to 2024 (± margin of error).
Attic Insulation in Harmony
If the joists show above the insulation in a Harmony attic, ENERGY STAR says to add more insulation.
The Local Climate
Harmony's center sits about 990 feet above sea level, 12 miles from NOAA's Statesville 2 NNE station, the best match for Harmony. The station's 1991 to 2020 normals average about 3,990 heating and 1,260 cooling degree days a year, so at Harmony's station, heating needs outweigh cooling. Harmony sits about 200 feet above the station, so expect slightly colder winters.
Homes by Age: What It Means for the Attic
At about 330 housing units, give or take 83, Harmony is too small for the survey to date its houses. For Harmony, the nearest town with solid figures is Mocksville, 13 miles off: median year built 1986 and about 35 percent of homes built before 1970.
Air Sealing and Duct Sealing in Harmony
In Mocksville, the nearest town to Harmony with solid figures, 71 percent of homes heat with electricity.
Air sealing in a Harmony attic covers wire and pipe holes, wall tops, the attic stair and bath fans.
How Homes Here Are Heated
- Electricity: 64% (±15), about 190 households; Iredell County: 63%
- Piped gas: under 6%
- Bottled or tank gas: 7% (±6), about 20 households
- Oil or kerosene: 25% (±12), about 75 households
- Wood: under 4%
Power, Gas and Rebates
Duke Energy Carolinas serves most of Harmony, EnergyUnited its edges; your bill says which. For gas, Harmony is in the Iredell County franchise of Enbridge Gas North Carolina, whose mains may not reach every street in Harmony.
Rebate to check in Harmony: Smart $aver Insulate and Seal (Duke Energy; Insulation Pros is an approved trade ally). Before a job in Harmony, check its current terms; the Iredell County page lists every program.
Attic Insulation Removal in Harmony
In a Harmony attic, only wet, moldy or animal-soiled insulation is vacuumed out (ENERGY STAR's test), once the cause is fixed, and after mice that Harmony attic is sanitized and deodorized; dry, clean insulation stays.
Also Serving Near Harmony
Nearest to Harmony first.
Mocksville, NC
13 miles east
6,282 people, about 10 times Harmony's population
Insulation contractor serving MocksvilleStatesville, NC
13 miles southwest
Power from its own town system (Harmony: Duke Energy Carolinas); 32,181 people, about 52 times Harmony's population
Insulation contractor serving StatesvilleYadkinville, NC
14 miles northeast
Its NOAA station logs about 200 more heating degree days than Harmony's; 3,055 people, about 5 times Harmony's population
Attic insulation in YadkinvilleCooleemee, NC
16 miles southeast
Center about 270 feet lower than Harmony's; 1,002 people to Harmony's 619
Attic insulation in Cooleemee
Harmony Insulation FAQs
Could my Harmony house be on the National Register?
The state's records say no. Its register list puts no listing inside the town. Two houses added in 1980 are labeled as being in the vicinity, meaning they sit beyond the town limits. When the state last listed local preservation commissions, in 2023, the county had its own commission and the town had none. And a register listing never stops an owner from improving a house with personal funds. Attic insulation is indoor work besides.
How can I tell if my older Harmony attic is leaking air?
Look at the insulation itself. ENERGY STAR reads dark, grimy streaks as the trail of indoor air seeping up through it, often at wiring holes, plumbing, flue chases or the hatch. Those openings get sealed first, and the stained insulation can usually stay. A town incorporated in 1874 can have houses wired before 1930, so we also ask an electrician to rule out knob-and-tube before anything is added.
Does attic insulation in Harmony need a permit?
Harmony Town Hall can say whether Iredell County Building Standards Division, the town itself or another office handles permits in Harmony; ask before work starts.
Helpful Guides
- Power from Duke Energy Carolinas: high summer electric bills and home energy audits
Sources
Census Bureau figures for Harmony, NOAA normals for the Statesville 2 NNE station, Duke Energy Carolinas (October 2026). Compiled by Insulation Pros. How the town pages are made.
Sources for the Harmony introduction and questions (read October 20, 2026):
- Harmony, in The North Carolina Gazetteer (William S. Powell, 2nd ed., UNC Press 2010), NCpedia
- Historic Resources of Iredell County, National Register multiple resource nomination (NC HPO)
- NC Listings in the National Register of Historic Places, NC State Historic Preservation Office
- Historic Preservation Commission Staff in North Carolina, listed by county, as of 2/20/2023 (NC HPO)
- What Is the National Register of Historic Places?, NC State Historic Preservation Office
- Attic Air Sealing Project, ENERGY STAR
- Attic Insulation Project, ENERGY STAR
Harmony, NC
Open in Google Maps (opens in a new tab)Serving Harmony, NC
Insulation Pros is an insulation contractor serving North Carolina, Harmony and the rest of Iredell County included.
Reach us
Send the square footage of your Harmony attic, or call (336) 870-3893.