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Many NH homes were built with oil boilers, baseboard heat, or radiators and have no ductwork. Others have forced-air furnaces with existing ducts. The right heat pump type depends on what your home already has and what you need.
$1,800 - $5,000
Ductless Single-Zone
$4,500 - $12,000
Ductless Multi-Zone
$5,500 - $11,000
Ducted Central HP
Varies by Utility
NHSaves Rebates
Answer a few questions to get a personalized recommendation based on your home and heating situation.
How ducted, single-zone ductless, and multi-zone ductless heat pumps stack up on the factors that matter most in New Hampshire.
| Feature | Ducted | Ductless (Single) | Ductless (Multi) |
|---|---|---|---|
| Installed Cost | $5,500 - $11,000 | $1,800 - $5,000/zone | $4,500 - $12,000 |
| Uses Existing Ducts | Yes (required) | No | No |
| Whole-Home Coverage | Yes | No (single zone) | Yes (2-5 zones) |
| Efficiency (HSPF2) | 8.5 - 12.0 | 10.0 - 13.5 | 9.5 - 12.5 |
| Cold-Climate Rating | Select models to -15°F | Most models to -15°F | Most models to -13°F |
| Zone Control | Limited (dampers optional) | Individual room | Per-zone independent |
| Installation Disruption | Moderate (if ducts exist) | Minimal (4-6 hours) | Moderate (1-2 days) |
| Best For in NH | Homes with existing forced-air | Oil/propane supplement, additions | Older homes without ducts |
Factors unique to the Granite State that affect which heat pump type makes sense for your home.
Northern NH and the White Mountains see temperatures of -15°F to -20°F. Cold-climate rated models (Mitsubishi Hyper-Heat, Fujitsu XLTH) maintain 75-80% capacity at -13°F and keep running to -15°F. In Zone 6 areas like Berlin and Colebrook, a backup heat source is still recommended for the coldest nights.
About 40% of NH homes heat with oil at $3.50-$4.00/gallon. Ductless mini-splits are the most popular entry point: homeowners add 1-2 heads to offset oil usage in main living areas, cutting oil consumption by 30-60% without replacing the existing system.
Propane-heated homes around Lake Winnipesaukee, Squam Lake, and rural areas also benefit from heat pump supplementation. Ductless systems are ideal for seasonal camps being upgraded to year-round use and for cabins without existing ductwork.
Many homes in Manchester, Nashua, Concord, and the Monadnock region were built before 1970 with baseboard or radiator heat and no ductwork. Ductless multi-zone systems serve these homes without the cost and disruption of installing new ducts ($3,000-$8,000 extra).
Rebate amounts vary by utility provider. Eversource, Liberty, Unitil, and NH Electric Co-op each offer different incentive levels through the NHSaves program. Both ducted and ductless cold-climate models are eligible, but requirements differ. Always confirm current amounts before purchasing.
These models are proven performers in New England winters and are commonly installed throughout New Hampshire.
-13°F
12.5
100% at 5°F, ~76% at -13°F
19 dB indoor
$4,500 - $7,000/zone
Most popular in NH for oil supplementation
-15°F
12.0
100% at 5°F, ~80% at -15°F
18 dB indoor
$4,200 - $6,500/zone
Best extreme-cold rating for northern NH
-13°F
10.5
100% at 5°F, ~75% at -13°F
Concealed unit
$6,000 - $10,000
Whole-home ducted cold-climate solution
-4°F
10.0
100% at 17°F, variable below
Integrated with ductwork
$5,500 - $9,000
Good value for southern NH with existing ducts
Yes. Modern cold-climate ductless mini-splits like the Mitsubishi Hyper-Heat and Fujitsu XLTH operate effectively down to -13°F to -15°F. They maintain 75-80% heating capacity at those temperatures. In most of southern and central NH (Manchester, Concord, Nashua), they handle 95%+ of winter hours without backup. In northern NH and the White Mountains, a backup heat source for the coldest nights is recommended.
Absolutely, and this is the most common approach in New Hampshire. Many homeowners install 1-3 ductless mini-split heads in primary living spaces while keeping their oil boiler for backup and hot water. This hybrid approach typically cuts oil consumption by 30-60%, saving $800-$2,000 per year depending on oil prices and home size.
NHSaves rebates vary by utility provider (Eversource, Liberty, Unitil, NH Electric Co-op). Both ducted and ductless cold-climate heat pumps are eligible. Rebate amounts and requirements change periodically, so always confirm current incentive levels with your specific utility before making a purchase decision.
For homes without existing ductwork (common in older NH homes with baseboard or radiator heat), ductless multi-zone systems are almost always the better choice. Installing new ductwork costs $3,000-$8,000+ and requires significant construction. A ductless multi-zone system with 3-4 indoor heads provides whole-home coverage without that disruption.
A single 12,000 BTU (1-ton) mini-split head covers roughly 400-600 sq ft in an insulated NH home. A typical 1,800 sq ft home might need a 3-zone system: one 18,000 BTU head for the main living area and two 9,000 BTU heads for bedrooms. Proper sizing by a Manual J calculation is essential in NH due to the cold winters and variable insulation quality in older homes.
Yes. Every heat pump provides both heating and cooling. Ductless mini-splits are especially effective for cooling in NH homes that lack central air. With summer temperatures increasingly reaching the 90s in southern NH, this dual functionality means your heating investment also solves your cooling needs at no additional cost.
Explore more New Hampshire heat pump and solar guides.
NH Heat Pump Costs 2026
Full pricing breakdown by system type and size
NH Heat Pump Rebates 2026
NHSaves incentives by utility provider
Cold Climate Heat Pumps in NH
Performance data for sub-zero temperatures
Choosing an NH Installer
What to look for in a heat pump contractor
Heat Pump vs Oil in NH
Cost comparison with oil boiler systems
Solar + Heat Pump in NH
Pair solar panels with your heat pump system
Get a free assessment from a qualified New Hampshire heat pump installer. We will help you determine whether ducted or ductless is the best fit for your home, your heating system, and your budget.