Home / Heat pump installation cost / Londonderry, NH
Londonderry · Rockingham County · labor +28.7%
Heat pump installation cost in Londonderry, NH
A 2,000 sq ft home heat pump in ducted air-source heat pump comes to about $11,450 to $22,850 in Londonderry once the national installed price is adjusted for what HVAC mechanics and installers earn locally. The town's fee schedule names this work puts the permit at from $75 for a job at the midpoint.
Figures checked October 20, 2026 · sources
- 1Ducted air-source, 2,000 sq ft home $11,450–$22,850
- 2Labor index +28.7% vs US
- 3Londonderry permit from $75
Change size or material All Londonderry projects
Heat pump installation prices in Londonderry by material
Each row starts from the installed price per home published in a national cost guide, then moves only the labor part of that price by Londonderry's labor index. For 2,000 sq ft home:
| Material | National | Londonderry | Midpoint |
|---|---|---|---|
| Ducted air-source heat pump | $10,000–$20,000 | $11,450–$22,850 | $17,150 |
| Ductless mini-split heat pump | $2,000–$17,000 | $2,300–$19,450 | $10,850 |
The ducted row is priced from the guide's table for a 2,000 sq ft home (3 tons). The ductless row is the guide's range for one system of any size, from a single head to several zones, which is why it is so wide.
By size
| Home size (sq ft) | Londonderry estimate | Permit at midpoint |
|---|---|---|
| 1,000 sq ft home | $6,850–$9,700 | from $75 |
| 1,500 sq ft home | $9,150–$12,000 | from $75 |
| 2,000 sq ft home | $11,450–$22,850 | from $75 |
| 2,500 sq ft home | $13,700–$25,150 | from $75 |
| 3,000 sq ft home | $20,600–$28,600 | from $75 |
| 3,500 sq ft home | $22,850–$32,000 | from $75 |
| 4,000 sq ft home | $25,150–$36,600 | from $75 |
Ducted air-source heat pump.
Permit fee in Londonderry
Named in the schedule The fee schedule names this kind of work.
“Residential Mechanical: Any Residential $50 base + $10 per additional item”
“Application Fee $25 Charged for all permits”
Applied to a 2,000 sq ft home heat pump estimated at $11,450 to $22,850, that gives from $75 to from $75, about 0.44% of the midpoint price. Among the 14 towns on this site whose schedules cover this work, Londonderry ranks 6 from the cheapest; Fitzwilliam is lowest at $50 and Newport highest at $202.81 for its own midpoint job.
Schedule: Town of Londonderry Building Department, Permitting Fee Schedule (effective 11/4/25). The building department decides whether a permit is required and what valuation it accepts; the national guide puts heat pump permits at $50–$300.
Why Londonderry differs from the national price
Londonderry is in Rockingham County, which the Bureau of Labor Statistics counts in the Boston-Cambridge-Newton, MA-NH metropolitan area (mostly Massachusetts). The median wage there for hVAC mechanics and installers is $37.75 an hour against $29.33 nationally, so the labor part of a national price is scaled by 1.287 (+28.7%). That area is mostly Massachusetts; the New Hampshire statewide median for the same trade is $35.51, so a Londonderry quote may land nearer the low end of the range shown.
On this job the labor portion is $5,000 to $10,000 at national rates and $6,450 to $12,850 at Londonderry rates, so the midpoint rises $2,150 above the national figure. Against the New Hampshire statewide wage it is $570 higher. Materials are priced at the national figure: shingle, lumber and equipment prices are set by distributors, not by a town.
A second published benchmark points the same way for the region: Remodeling's 2025 Cost vs Value report prices its “HVAC Conversion, Electrification” job at $19,500 nationally and $22,200 in New England. Those are fixed specification jobs, not per-square-foot prices, so they are shown for comparison only.
Londonderry at a glance
Londonderry had 28,437 residents in the state's 2025 estimate, up 17.9% from 24,129 in 2010, faster than the state's 7.5% over the same years. Its density of 656 people per square mile puts it 10 of 19 among the towns on this site.
85.6% of Londonderry's occupied homes are lived in by their owners, more than the 72.8% statewide, and the median owner-occupied home is valued at $505,200 (New Hampshire: $402,500). The midpoint estimate for this heat pump works out to 3.4% of that median value.
Before asking for quotes
- The Londonderry building department can say for free whether this job needs a permit and what it will cost; the schedule linked above is its own published document.
- Written quotes that list the same scope (area, material line, removal, disposal, permit) can be compared line by line; the quote comparison guide walks through it with these numbers.
- A quote far below $11,450 or above $22,850 is not wrong in itself, but it is worth asking what it includes or leaves out.
Other projects in Londonderry
Roof replacement cost in Londonderry · Siding replacement cost in Londonderry · Deck building cost in Londonderry
Heat pump installation in nearby towns
| Town | Labor area | Estimate | Permit |
|---|---|---|---|
| Durham | Boston-Cambridge-Newton | $11,450–$22,850 | $170.07 |
| Exeter | Boston-Cambridge-Newton | $11,450–$22,850 | $135.77 |
| Portsmouth | Boston-Cambridge-Newton | $11,450–$22,850 | from $75 |
| Salem | Boston-Cambridge-Newton | $11,450–$22,850 | $111.50 |
| Bow | Central NH | $10,200–$20,400 | $75 |
More: all heat pump installation town pages · permit fees by town · labor costs in New Hampshire
Sources
- Installed price: HomeGuide: Heat pump cost (Oct 30, 2025) — “Air-source (ducted) $10,000 – $25,000+ (includes air handler installation)”.
- Labor portion: Filterbuy: Heat pump installation cost guide (Mar 4, 2026) — “labor typically accounts for 40% to 60% of the total installation cost.” (midpoint, 50%, used).
- Labor index: O*NET OnLine, Heating, Air Conditioning, and Refrigeration Mechanics and Installers (49-9021.00), New Hampshire local wages; area definitions: BLS, May 2025 Metropolitan and Nonmetropolitan Area Definitions.
- Permit: Town of Londonderry Building Department, Permitting Fee Schedule.
- Population: NH Office of Planning and Development, 2025 Population Estimates of New Hampshire Cities and Towns (published July 17, 2026); housing: Census QuickFacts, Londonderry.
All figures checked October 20, 2026. Estimates are ranges built from published averages, not quotes; a contractor's price depends on the house, access, the season and the scope written into the quote. Cost by Town does not perform or arrange work.