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Cold-climate performance ranked. NHSaves qualified products. R-32 and R-454B refrigerants. From ductless mini-splits to whole-home ducted systems -- the brands that actually work in NH winters.
8
Brands Ranked
-15\u00B0F
Lowest Operating Temp
$250-$1,250
NHSaves /ton
$0
Federal 25C (Expired)
The Section 25C energy efficiency tax credit expired December 31, 2025. There is $0 federal tax credit for heat pumps in 2026. NHSaves rebates ($250-$1,250/ton) are the primary incentive. New Hampshire also has no sales tax, saving you hundreds on installation costs.
| # | Brand | Type | Min Temp | HSPF2 | SEER2 | Refrigerant | Price Range | NHSaves |
|---|---|---|---|---|---|---|---|---|
| 1 | Mitsubishi | Both | -13°F | 12.5 | 22.0 | R-32 | $4,500-$7,000/zone | |
| 2 | Fujitsu | Ductless | -15°F | 12.0 | 20.0 | R-32 | $4,000-$6,500/zone | |
| 3 | LG | Ductless | -13°F | 11.5 | 21.0 | R-32 | $4,200-$6,800/zone | |
| 4 | Daikin | Ducted | -4°F | 10.0 | 18.0 | R-32 | $8,000-$15,000 (system) | |
| 5 | Carrier | Ducted | -10°F | 13.0 | 24.0 | R-454B | $10,000-$18,000 (system) | |
| 6 | Bosch | Ducted | -4°F | 11.0 | 20.0 | R-454B | $9,000-$16,000 (system) | |
| 7 | Lennox | Ducted | -10°F | 12.0 | 22.0 | R-454B | $9,000-$17,000 (system) | |
| 8 | Trane | Ducted | -10°F | 11.5 | 20.0 | R-454B | $9,000-$16,000 (system) |
Model: Hyper-Heat MSZ-FH / MXZ
Overall best for NH. Proven cold-climate leader.
Min Temp
-13°F
HSPF2 / SEER2
12.5 / 22.0
Price Range
$4,500-$7,000/zone
Refrigerant
R-32
DOE cold-climate testing conducted in New England. Most NH installers carry Mitsubishi. Largest support network in the state.
Model: Halcyon XLTH
Coldest NH locations. Best for White Mountains and North Country.
Min Temp
-15°F
HSPF2 / SEER2
12.0 / 20.0
Price Range
$4,000-$6,500/zone
Refrigerant
R-32
Lowest operating temperature of any brand on this list. Ideal for northern NH towns like Littleton, Berlin, Gorham, and Lancaster where temps regularly drop below -10°F.
Model: LGRED° Series
Best value cold-climate ductless option.
Min Temp
-13°F
HSPF2 / SEER2
11.5 / 21.0
Price Range
$4,200-$6,800/zone
Refrigerant
R-32
Strong capacity retention in cold weather. LG offers competitive pricing for NH installers, making it a good mid-price option between Fujitsu and Mitsubishi.
Model: FIT (DERA/DZ-Series)
Whole-home ducted replacement. Existing ductwork homes.
Min Temp
-4°F
HSPF2 / SEER2
10.0 / 18.0
Price Range
$8,000-$15,000 (system)
Refrigerant
R-32
Best option for NH homes with existing ductwork that want a full furnace replacement. Common in newer NH homes and ranches with forced-air systems.
Model: Greenspeed 25VNA
Premium ducted whole-home. Highest efficiency ratings.
Min Temp
-10°F
HSPF2 / SEER2
13.0 / 24.0
Price Range
$10,000-$18,000 (system)
Refrigerant
R-454B
The premium ducted choice for NH homeowners who want the best efficiency ratings. Variable speed compressor adjusts output to match heating load, reducing short-cycling in milder weather.
Model: IDS 2.0
Reliable ducted mid-range. Good for existing ductwork.
Min Temp
-4°F
HSPF2 / SEER2
11.0 / 20.0
Price Range
$9,000-$16,000 (system)
Refrigerant
R-454B
Solid mid-range ducted option. Bosch has good brand recognition in NH for reliability. Works well as a direct replacement for gas or oil furnaces in homes with ductwork.
Model: XP25 / XP21
High-end ducted option. Strong cold-climate performer.
Min Temp
-10°F
HSPF2 / SEER2
12.0 / 22.0
Price Range
$9,000-$17,000 (system)
Refrigerant
R-454B
Lennox has several authorized dealers in southern and central NH. The XP25 competes directly with Carrier Greenspeed at a slightly lower price point.
Model: XV20i / XR17
Reliable workhorse. Strong warranty with registration.
Min Temp
-10°F
HSPF2 / SEER2
11.5 / 20.0
Price Range
$9,000-$16,000 (system)
Refrigerant
R-454B
Trane has a reputation for durability that appeals to NH homeowners. 10-year registered warranty on both compressor and parts. Multiple Trane dealers in the southern NH corridor.
$250/ton (max $1,250)
For replacing oil, gas, or propane heating systems.
ENERGY STAR Cold Climate certified
R-32 or R-454B refrigerant (no R-410A)
NHSaves network contractor required
Install by December 30, 2026
$1,250/ton (max $6,250)
For replacing electric resistance heating (baseboard, wall units).
All Standard Tier requirements plus:
Pre-verification required BEFORE installation
Must be replacing electric resistance heat
Significantly reduces your electric bill
NHSaves removed R-410A heat pumps from their qualified products list in 2026 due to high global warming potential (GWP 2,088). Only R-32 (GWP 675) and R-454B (GWP 466) units qualify for rebates. All eight brands on this page use compliant refrigerants.
Mitsubishi Hyper-Heat or Fujitsu XLTH
Ductless mini-splits install without ductwork. Room-by-room control. Best cold-weather performance.
Carrier Greenspeed or Daikin FIT
Ducted systems use your existing infrastructure. Whole-home heating and cooling from one unit.
Fujitsu XLTH (-15°F)
The lowest operating temperature on our list. Designed for exactly this climate.
LG LGRED° or Fujitsu XLTH
Strong cold-weather performance at $500-$1,000 less per zone than Mitsubishi.
Mitsubishi Multi-Zone + Existing Boiler Backup
Dual-fuel approach: heat pump handles 80% of heating, boiler covers extreme cold. Highest savings.
Carrier Greenspeed 25VNA
HSPF2 13.0 and SEER2 24.0 — the most efficient option. Variable speed eliminates waste.
Mitsubishi Hyper-Heat is the overall best heat pump brand for New Hampshire. It maintains 100% rated capacity at 5°F, operates down to -13°F, and has the widest installer network in NH. For the coldest NH locations (White Mountains, North Country), Fujitsu Halcyon XLTH operates to -15°F. Both use R-32 refrigerant and are NHSaves qualified for rebates up to $1,250/ton.
NHSaves offers two rebate tiers in 2026: Standard at $250/ton (max $1,250) for replacing oil, gas, or propane heating, and Enhanced at $1,250/ton (max $6,250) for replacing electric resistance heating. All eight brands on our list are NHSaves qualified. You must use a NHSaves network contractor, and the heat pump must use R-32 or R-454B refrigerant (R-410A is no longer qualified). The federal 25C energy efficiency credit expired December 31, 2025.
Yes. Modern cold-climate heat pumps are designed for NH winters. The top brands on our list operate from -4°F to -15°F. Mitsubishi Hyper-Heat (-13°F) and Fujitsu XLTH (-15°F) maintain meaningful heating capacity well below zero. NH typically sees 5-15 nights per winter below -10°F in southern regions and 20-30 in northern regions. A dual-fuel setup (heat pump + oil/propane backup for extreme cold) is popular in northern NH.
No. The Section 25C energy efficiency tax credit expired December 31, 2025 under the OBBBA. There is $0 federal tax credit for heat pumps in 2026. NHSaves rebates ($250-$1,250 per ton) are the primary incentive available to NH homeowners. New Hampshire also has no state sales tax, which saves hundreds on installation.
NHSaves requires R-32 or R-454B refrigerant for 2026 rebates. R-410A heat pumps are NO LONGER qualified. R-32 has a GWP of 675 (used by Mitsubishi, Fujitsu, LG, Daikin). R-454B has a GWP of 466 (used by Carrier, Bosch, Lennox, Trane). Both are mildly flammable (A2L classification) but safe for residential use. All eight brands on our list use NHSaves-compliant refrigerants.
It depends on your home. Ductless mini-splits (Mitsubishi, Fujitsu, LG) are best for homes without ductwork, which includes many older NH colonials and capes. They offer room-by-room control and the best cold-weather performance (-13°F to -15°F). Ducted systems (Carrier, Daikin, Bosch, Lennox, Trane) are best if you have existing ductwork in good condition and want whole-home coverage from a single system. Many NH homes use a hybrid approach: a ducted system for main areas and mini-splits for bedrooms or additions.
To receive NHSaves heat pump rebates, your installation must be performed by a contractor who is part of the NHSaves network. These contractors have been vetted for proper licensing, insurance, and training. You can find NHSaves network contractors at nhsaves.com/find-a-contractor. Using an installer outside the network means you will not receive the rebate, even if the heat pump model itself qualifies.
A single-zone ductless mini-split costs $3,500-$7,000 installed. A multi-zone ductless system (2-5 heads) costs $8,000-$18,000. A ducted whole-home heat pump costs $8,000-$18,000. A hybrid/dual-fuel system costs $14,000-$25,000. NHSaves rebates reduce costs by $250-$1,250 per ton ($750-$6,250 typical). There is no federal 25C tax credit in 2026.
Get quotes from NHSaves-approved contractors who install these brands. We match you with installers experienced in your utility territory.