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Get a Free QuoteA mini-split IS a heat pump. The real question for NH homeowners is ducted vs. ductless — and with 70% of NH homes lacking ductwork, mini-splits are the default, not the alternative.
~70%
NH Homes w/o Ducts
$250-1,250/ton
NHSaves Rebate
$3-15K
Mini-Split Install
-22°F
Operates To
When people search “heat pump vs. mini-split,” they typically think these are two different products. They're not. A mini-split is a type of heat pump — specifically, a ductless heat pump system with an outdoor compressor and one or more wall-mounted indoor heads connected by refrigerant lines.
The actual choice for NH homeowners is between:
New Hampshire's housing stock is older than the national average. According to the U.S. Census Bureau, approximately 70% of NH homes were built before 1980 — many are Colonials, Capes, and farmhouses from the 1800s and early 1900s that were originally heated with fireplaces, then converted to oil boilers with radiators or baseboard heat.
These homes were never designed for central air or forced-air heating. They have no ductwork. Installing ductwork after the fact costs $10,000-20,000+ and requires opening walls, ceilings, and floors — a major renovation that most homeowners want to avoid.
This is exactly why mini-splits dominate the NH heat pump market. They mount on walls with only a 3-inch hole through the exterior wall for refrigerant and electrical lines. No ductwork renovation. No major construction. Installation typically takes one day per zone.
The default for 70% of NH homes
Only practical if ducts already exist
All three are heat pumps. All qualify for NHSaves rebates. The difference is how they deliver heating and cooling to your rooms.
Wall-mounted indoor heads + outdoor compressor. No ductwork needed.
Best for: NH homes without ductwork (70% of housing stock). Colonials, Capes, farmhouses. · Installed cost: $3,000-15,000 · NH fit: Excellent
Advantages
Limitations
Single outdoor unit + air handler distributes through existing ducts.
Best for: Newer NH homes with existing ductwork in good condition. · Installed cost: $12,000-22,000 · NH fit: Good (if ducts exist)
Advantages
Limitations
Mini-split compressor + concealed air handler with short duct runs.
Best for: NH homeowners who want hidden indoor units. Attic or closet installation. · Installed cost: $5,000-8,000 per zone · NH fit: Good
Advantages
Limitations
Your NH home's age and construction determine whether you need mini-splits or can use a ducted system. Here's a practical guide by home type.
| Home Type | % of NH Stock | Has Ducts? | Recommendation |
|---|---|---|---|
Colonial (2-story, pre-1950) | ~25% | Rarely | Multi-zone mini-split (3-4 heads) |
Cape Cod (1.5-story) | ~20% | Rarely | Mini-split with head on each floor + bedrooms |
Ranch (single-story, post-1960) | ~15% | Sometimes | Ducted if ducts exist; otherwise 2-3 zone mini-split |
Farmhouse (pre-1900) | ~10% | Never | Multi-zone mini-split — only realistic option |
Raised Ranch / Split Level | ~10% | Often | Ducted heat pump if ducts are in good shape |
New Construction (post-2000) | ~15% | Yes | Ducted central heat pump — built for it |
Whether you choose a ductless mini-split, ducted mini-split, or ducted central heat pump — all qualify for NHSaves rebates as long as the equipment meets the 2026 requirements: ENERGY STAR Cold Climate certified and R-32 or R-454B refrigerant (R-410A removed from the qualified products list).
For homeowners replacing oil, gas, or propane heating.
For homeowners replacing electric resistance heating.
The federal Section 25C energy efficiency credit expired December 31, 2025. There is no federal tax credit for heat pump installations in 2026. NHSaves rebates are the primary financial incentive available to NH homeowners.
Real-world installed costs in New Hampshire, including NHSaves rebates.
| Scenario | Ductless Mini-Split | Ducted Central HP |
|---|---|---|
| Single room (1 zone) | $3,000-5,000 | N/A — overkill |
| 2 rooms (living + bedroom) | $6,000-9,000 | $12,000-15,000 |
| Whole home (3-4 zones) | $9,000-15,000 | $12,000-22,000 |
| NHSaves rebate | $250-1,250/ton | $250-1,250/ton |
| Add ductwork? | Not needed — $0 | $10,000-20,000 if no existing ducts |
| Installation time | 1-2 days | 2-4 days |
| Energy efficiency (SEER2) | 20-26 | 17-21 |
| Zone-by-zone control | Yes — each head independent | No — single thermostat |
The most important factor for any heat pump in New Hampshire is cold-weather performance. NH's design temperature ranges from 0°F to -10°F depending on location (colder in the North Country, milder along the coast). Modern cold-climate mini-splits handle these temperatures well:
Operates to -22°F
Industry-leading cold performance. Most popular in NH.
Operates to -13°F
Excellent efficiency. Strong cold-climate ratings.
Operates to -13°F
Strong mid-tier option. Good NH track record.
Operates to -13°F
Available in ducted and ductless. Competitive pricing.
At 0°F, modern cold-climate mini-splits maintain 75-85% of their rated heating capacity. This is sufficient for most NH homes as a primary heat source. Many homeowners keep their existing oil or propane boiler as backup for the handful of nights below -10°F, running the mini-split as primary heat for 85-95% of heating hours.
This dual-fuel approach — mini-split as primary + oil/propane backup — is the most popular strategy in New Hampshire. It maximizes savings while providing peace of mind during extreme cold snaps.
Answer these three questions to determine the best system type:
No ductwork
Mini-split is your only practical option. This includes most Colonials, Capes, and farmhouses built before 1980.
Go with ductless mini-split
Has ductwork
Proceed to question 2. Having ducts opens up the ducted heat pump option.
Continue to question 2
Ducts leaky or undersized
Leaky ducts waste 20-30% of heated air. Fixing ducts costs $2,000-5,000. You may still be better off with mini-splits.
Consider ductless mini-split
Ducts sealed and properly sized
A ducted central heat pump can use your existing infrastructure efficiently.
Ducted heat pump is a strong option
Yes — different temps per room
Only mini-splits offer true zone-by-zone temperature control with independent heads in each room.
Choose ductless mini-split
No — single thermostat is fine
A ducted system with a single thermostat is simpler to operate and has no visible indoor equipment.
Ducted heat pump works well
Regardless of whether you choose ducted or ductless, the real savings come from replacing expensive fossil fuel heating. At NH's average $0.27/kWh electric rate, heat pumps cost roughly 40-60% less to operate than oil heating.
| Category | Oil Heat | Mini-Split Heat Pump |
|---|---|---|
| Annual fuel/electric cost | $2,100-2,800 | $980-1,400 |
| Typical NH home (700 gal oil) | $2,450/year @ $3.50/gal | $1,100-1,200/year @ $0.27/kWh |
| Annual maintenance | $150-250 (mandatory tune-up) | $0-100 (filter cleaning) |
| Heating + cooling combined | $2,450 heat + $500-800 AC | $1,200 (heat AND AC built in) |
| Total annual cost | $2,850-3,550 | $1,100-1,300 |
| Annual savings vs. oil | — | $1,500-2,250/year |
Assumes typical 2,000 sq ft NH home, 700 gallons oil/year, oil at $3.50/gal, electricity at $0.27/kWh, mini-split COP of 2.5 in heating season.
A typical single-zone mini-split installation in New Hampshire takes about one day. Here's what to expect:
Installer evaluates your home layout, insulation, window placement, and electrical panel capacity. Determines optimal head placement and line routing.
Based on heat loss calculation (Manual J), installer recommends system size. NHSaves qualification verified. R-32 or R-454B refrigerant confirmed.
Wall bracket installed at optimal height (typically 7-8 feet). 3-inch hole drilled through exterior wall for refrigerant lines, electrical, and condensate drain.
Condenser placed on bracket or ground stand. NH installations should elevate 18-24 inches above expected snow line. Refrigerant lines connected.
Dedicated circuit from electrical panel. 20-30 amp for single zone. Disconnect installed per NH electrical code.
Lines evacuated with vacuum pump. System charged with refrigerant. Leak testing and pressure verification.
System tested in both heating and cooling modes. Remote/app setup. Homeowner walkthrough.
After installing hundreds of heat pump systems in NH, these are the most frequent errors we see:
Some contractors sell standard heat pumps rated to only 5°F or 15°F. In NH, you need cold-climate rated equipment that operates reliably to -13°F or below. Always check the NEEP ccASHP specification sheet.
R-410A is no longer on the NHSaves qualified products list as of 2026. Systems must use R-32 or R-454B to qualify for rebates. Some contractors still have R-410A inventory they want to move.
A heat pump that is too large will short-cycle — turning on and off frequently — which wastes energy and wears out the compressor. Proper Manual J heat loss calculation is critical.
NH gets 60+ inches of snow annually. Outdoor units should be elevated 18-24 inches above expected snow line. Ground-level installations get buried and stop working.
Mini-splits save 40-60% on heating costs vs. oil. Not 100%. Be wary of any contractor who promises you will eliminate your heating bill entirely. Electricity still costs money at $0.27/kWh.
Zone-by-zone pricing and NHSaves rebate details
How many zones does your NH home need?
15-18 year lifespan in NH, signs to replace
Full comparison for NH homes
Which models qualify for rebates
Operating cost comparison at NH rates
Yes. A mini-split is a type of heat pump. The term "mini-split" refers to the form factor — a ductless system with an outdoor compressor connected to one or more indoor wall-mounted heads via refrigerant lines. All mini-splits are heat pumps. The distinction people mean is usually "ducted heat pump vs. ductless mini-split."
About 70% of NH homes were built before 1980 and lack central ductwork. These homes typically have oil boilers with radiators or baseboard heat. Installing ductwork would cost $10,000-20,000+ and require major renovation. Mini-splits mount on walls with only a 3-inch hole through the exterior — no ductwork needed. This makes them the default choice for NH homes.
Yes, with a multi-zone system. A 3-4 zone mini-split with properly placed indoor heads can heat and cool a typical 1,500-2,500 sq ft NH home. Modern cold-climate units like Mitsubishi Hyper Heat operate down to -22F. However, many NH homeowners keep their oil boiler as backup for the coldest days and use the mini-split as the primary heat source for 85-95% of heating hours.
NHSaves offers $250/ton for standard installations (replacing oil, gas, or propane) and $1,250/ton for enhanced installations (replacing electric resistance heating). A typical 1.5-ton single-zone system qualifies for $375-1,875 depending on the tier. Systems must use R-32 or R-454B refrigerant — R-410A is no longer on the NHSaves qualified products list as of 2026.
Choose a ducted heat pump if your NH home already has ductwork in good condition (typically homes built after 1990 or those with forced-air furnaces). Ducted systems cost $12,000-22,000 installed but provide whole-home coverage through a single outdoor unit. They also maintain a cleaner look with no wall-mounted indoor units. However, if your ducts are leaky or undersized, you may still be better off with mini-splits.
A single-zone mini-split in NH costs $3,000-5,000 installed. Two-zone systems run $6,000-9,000. Three-zone whole-home systems cost $9,000-15,000. After NHSaves rebates of $250-1,250/ton, net costs are typically 10-35% lower. The federal 25C energy efficiency credit expired December 31, 2025, so there is no federal tax credit for heat pump installations in 2026.
Get a free assessment from a NHSaves-qualified installer. We'll recommend the right system type — ducted or ductless — based on your NH home's specific layout and heating needs.