Ballpark Lab

HVAC Cost Calculator / New Hampshire

New Hampshire HVAC estimate

HVAC Replacement Cost in New Hampshire (2026)

HVAC replacement in New Hampshire runs roughly 8% above the national average on installed labor, which we apply to every system type — heat pump, AC + gas furnace, or ductless mini-split. Last updated July 10, 2026.

A typical 2,000 sq ft heat pump replacement in New Hampshire

2,000 sq ft, ducted heat pump, standard efficiency tier, ducts in good shape — sizes to about 3.5 tons of cooling capacity in New Hampshire. A clean baseline before you customize.

$8k – $17k
Confidencemedium

Material takeoff

Cooling capacity
4 tons

Cost breakdown

Ducted heat pump (SEER2 ~15.2, cold-climate, installed)
$7k – $14k
Old-system removal & disposal
$300 – $800
Mechanical permit allowance
$250 – $800
Total
$8k – $17k
Most likely
$12,328
  • Your heating load is well above the cooling load — you need a cold-climate heat pump (priced here) or a dual-fuel setup with a gas furnace backup.
  • Cooling load ≈ 2,000 sq ft × 20 BTU/sq ft for a freeze-thaw climate, ×1.00 for insulation, age, ceilings, windows, and sun; heating load uses 50 BTU/sq ft.
  • This is a screening estimate, not an ACCA Manual J — a contractor must run a room-by-room load calculation before install.
  • "standard" tier ≈ SEER2 ~15.2 cooling / 80% AFUE heating.
  • Excludes gas-line work, flue relining, asbestos abatement, and structural chases or returns for new ducts.
  • Replacing an HVAC system in New Hampshire needs a mechanical permit (usually pulled by the contractor); refrigerant work requires an EPA 608-certified tech, and many inspectors ask for a load calculation on heat pump or furnace swaps.

Estimate your HVAC in New Hampshire

Home & system

We size the system Manual-J-style from your square footage and climate, then price it for your state.

Conditioned floor area — what the system actually heats and cools.

Sets your climate zone and labor market.

A heat pump replaces both the AC and the furnace.

Mini-splits skip ducts entirely — the others need them.

Fine-tune the load

Pre-filled with typical values — adjust to match your home.

Average, in feet — taller rooms hold more air.

Estimated total
$8,419–$17,377
Heat pump · 3.5 tons
Low $8kMost likely ~$12,328High $17k

$8k – $17k · $6 per sq ft of home

How we sized it

  • Cooling load: 40,000 BTU → 3.5 tons
  • Heating load: 100,000 BTU
Confidencemedium

Material takeoff

Cooling capacity
4 tons

Cost breakdown

Ducted heat pump (SEER2 ~15.2, cold-climate, installed)
$7k – $14k
Old-system removal & disposal
$300 – $800
Mechanical permit allowance
$250 – $800
Total
$8k – $17k
Most likely
$12,328
  • Your heating load is well above the cooling load — you need a cold-climate heat pump (priced here) or a dual-fuel setup with a gas furnace backup.
  • Cooling load ≈ 2,000 sq ft × 20 BTU/sq ft for a freeze-thaw climate, ×1.00 for insulation, age, ceilings, windows, and sun; heating load uses 50 BTU/sq ft.
  • This is a screening estimate, not an ACCA Manual J — a contractor must run a room-by-room load calculation before install.
  • "standard" tier ≈ SEER2 ~15.2 cooling / 80% AFUE heating.
  • Excludes gas-line work, flue relining, asbestos abatement, and structural chases or returns for new ducts.
  • Replacing an HVAC system in New Hampshire needs a mechanical permit (usually pulled by the contractor); refrigerant work requires an EPA 608-certified tech, and many inspectors ask for a load calculation on heat pump or furnace swaps.

Operating costs

≈ $4,348/yr to run

A heat pump would run ≈ $4,348/yr here vs ≈ $3,144/yr for a gas furnace + AC. — gas heating is about $1,204/yr cheaper to run at local prices.

Electricity 25.9¢/kWh · gas $1.96/therm — U.S. EIA, 12-month average through April 2026. EFLH screening estimate, not a utility-bill prediction.

Certified models

For New Hampshire winters, prioritize cold-climate-rated units:

ENERGY STAR certified ducted models near 3.5 tons, standard tier
BrandModelSEER2HSPF2COP@5°FRefrigerant
TOSHIBA CARRIERMCY-MUB0488HS2P-UL15.59.152.1R-454B
Cold-climate
ACIQN5H9V48*K*AAA*15.592.08R-454B
Cold-climate
AirquestN5H9V48*K*AAA*15.592.08R-454B
Cold-climate
AirquestQ5H9V48*K*AAA*15.592.08R-454B
Cold-climate
ArcoaireN5H9V48*K*AAA*15.592.08R-454B
Cold-climate

Your standard tier (SEER2 ~15.2) sits around the bottom 10% of all certified units.

ENERGY STAR certified products data, updated July 19, 2026. Model availability varies by region — confirm exact matches with your installer.

Compare systems

Heat pumpSelected
$8k – $17k
AC + gas furnace
$10k – $20k
Ductless mini-split
$10k – $18k
AC only
$6k – $13k
Furnace only
$5k – $9k

The same home in each system — same size, climate, ductwork, and state.

iBallpark estimate for planning, not a bid. Sizing is a screening calculation from your square footage and climate — a contractor must run an ACCA Manual J load calculation before install. Excludes gas-line work, flue relining, asbestos abatement, and structural chases for new ducts. Get 3 local quotes before signing.

Data: U.S. EIA · OpenEI URDB · Google Solar · NREL PVWatts · DSIRE · IRS · ENERGY STAR · industry surveys — see all sources

Frequently asked questions

How much does a heat pump cost in New Hampshire?
A typical 2,000 sq ft ducted heat pump replacement in New Hampshire runs about $8k – $17k, with labor roughly 8% above the national average.
Is a heat pump cheaper than AC + furnace in New Hampshire?
The same home with a separate AC and gas furnace runs about $10k – $20k in New Hampshire, versus $8k – $17k for one heat pump that does both jobs. Your heating load is well above the cooling load — you need a cold-climate heat pump or a dual-fuel setup with a gas furnace backup.
Do I need a permit for HVAC replacement in New Hampshire?
Replacing an HVAC system in New Hampshire needs a mechanical permit (usually pulled by the contractor); refrigerant work requires an EPA 608-certified tech, and many inspectors ask for a load calculation on heat pump or furnace swaps.

HVAC costs in other states