Heat Pump Buying Guide 2026: Types, Costs & Best Brands
Heat pumps moved from niche product to mainstream in about four years. Sales volume roughly doubled between 2021 and 2024, manufacturers expanded their cold-climate product lines, and installer capacity — which was the real bottleneck — finally started catching up. If you're shopping in 2026, you have more options than buyers did even two years ago, which is mostly good news but also means more decisions to make.
This guide is structured to help you make those decisions in the right order: type first, then sizing, then brand and specifications, then cost and incentives.
The Three Main Types of Heat Pumps
Air-Source Heat Pumps (ASHP)
Air-source heat pumps extract heat from outdoor air and move it inside in winter, reversing the process in summer for cooling. They work on the same refrigeration cycle as your refrigerator, just at a much larger scale and with the reversibility built in.
The big development of the past five years has been cold-climate air-source heat pumps (CC-ASHPs) that maintain meaningful efficiency at temperatures as low as -15°F or even -22°F. Older heat pumps became inefficient below 35°F and often required supplemental electric resistance heat to compensate — which erased much of the efficiency advantage. Modern CC-ASHPs (Mitsubishi's Hyper Heat line, Bosch's IDS 2.0, and others) maintain coefficient of performance (COP) above 1.5 at 0°F, meaning they still deliver 50% more heat energy than the electricity they consume even in hard freezes.
Air-source systems are the most common choice for retrofits in homes with existing ductwork. They replace a traditional furnace/AC split system with a heat pump split system — similar installation footprint, similar labor process, lower operating costs.
Best for: Homes with existing ductwork, most U.S. climate zones, budgets under $15,000 installed.
Ductless Mini-Split Heat Pumps
Mini-splits are air-source heat pumps without the ductwork. An outdoor compressor connects to one or more indoor air handlers via refrigerant lines run through a small hole in the wall. Each indoor unit serves a zone and has independent temperature control.
In homes without ducts (common in older houses that were heated with radiators or baseboard electric), mini-splits are often the only practical retrofit option short of a major renovation. They're also ideal for additions, finished basements, or any space that the central system doesn't serve well.
Multi-zone mini-splits can serve 2–5 indoor units from a single outdoor compressor — but sizing gets complicated quickly, and the efficiency of the outdoor unit degrades somewhat as you add more zones. Single-zone systems are simpler and often more efficient per unit of capacity.
Best for: Homes without ductwork, room additions, zones that run hot or cold, budget-conscious installs of individual rooms.
Ground-Source (Geothermal) Heat Pumps
Ground-source systems extract heat from the earth rather than the air, using a loop of pipe buried underground or submerged in a pond. Because ground temperature stays relatively constant year-round (45–55°F depending on location), ground-source systems achieve higher efficiency than air-source in both heating and cooling — typically COP 3.5–5.0 versus 2.0–3.5 for air-source at moderate temperatures.
The tradeoff is installation cost. Drilling vertical wells or excavating horizontal loops is expensive — expect $10,000–$30,000 just for the ground loop before you touch the indoor equipment. Total installed costs of $20,000–$40,000 are common. Payback periods of 10–20 years are typical unless utility rates are very high or you have favorable site conditions (shallow water table, open land for horizontal loops).
Ground-source makes the most financial sense for new construction (where loop installation is cheaper), very high-energy-cost regions, or homeowners planning to stay long-term who value the system's exceptional longevity (ground loops last 50+ years).
Best for: New construction, high-energy-cost areas, long-term homeowners with land, those who've maxed out other efficiency measures.
Sizing Your Heat Pump
Heat pumps are sized in tons of cooling capacity (1 ton = 12,000 BTU/hour). The industry rule of thumb — 1 ton per 600 square feet — is a starting point, not a final answer. Actual sizing should account for:
- Climate zone (heating or cooling dominated)
- Insulation levels (a well-insulated home needs less capacity)
- Window area and orientation
- Ceiling height
- Internal heat gains (occupants, appliances)
- Local design temperatures (the coldest/hottest day you need to handle)
A proper Manual J load calculation takes 1–2 hours and costs $200–$500 if done by a professional. It's worth doing — an oversized heat pump short-cycles (turns on and off too frequently), which reduces efficiency, causes humidity problems in cooling mode, and increases wear on components. Oversizing is the industry's most common installation error, and it's more common with heat pumps than with conventional systems because contractors used to oversizing for AC comfort haven't always adjusted their habits.
If you've sealed and insulated your home recently, your previous HVAC contractor's sizing estimate is probably wrong. A home that's had attic insulation added, windows replaced, and air sealing done can require 20–30% less capacity than the same home a decade ago.
Understanding SEER2 and HSPF2 Ratings
As of January 2023, the federal testing standards for heat pumps changed. SEER (Seasonal Energy Efficiency Ratio for cooling) became SEER2, and HSPF (Heating Seasonal Performance Factor) became HSPF2. The new metrics use a more realistic test protocol, which means the same physical unit has a lower SEER2 rating than its old SEER rating — not because it got less efficient, but because the test got more accurate.
| Metric | What It Measures | Minimum (South) | Minimum (North) | Good | Excellent |
|---|---|---|---|---|---|
| SEER2 | Cooling efficiency | 14.3 | 13.4 | 16–18 | 20+ |
| HSPF2 | Heating efficiency | 7.5 | 6.8 | 9–10 | 11+ |
| COP | Heating efficiency at a point | — | — | 2.5–3.0 | 3.5+ |
For the HOMES and HEAR rebate programs, the DOE specifies minimum efficiency requirements that qualifying equipment must meet. Check the HOMES program guide and HEAR program guide for current equipment specifications — these can be updated as the market evolves.
Top Brands and What Differentiates Them
Mitsubishi Electric
Mitsubishi's Hyper Heat (H2i) technology remains the benchmark for cold-climate performance. Their units maintain 100% rated capacity at 5°F and 76% capacity at -13°F. The MXZ multi-zone systems and MLZ ceiling cassettes offer commercial-grade reliability with residential pricing. Mitsubishi tends to run 15–25% more expensive than mid-tier brands — often worth it in cold climates, less critical in mild ones.
Typical installed cost for a single-zone 2-ton mini-split: $4,500–$7,500.
Daikin
Daikin is the world's largest HVAC manufacturer by volume, and their residential product quality has improved significantly since they acquired Goodman in 2012. Their FIT series offers solid mid-range performance for ducted whole-home systems. The Aurora line includes cold-climate models with -13°F operation. Daikin tends to be well-priced relative to performance and has wide contractor availability.
Typical installed cost for a 3-ton ducted system: $8,000–$13,000.
Carrier / Bryant
Carrier's Infinity series heat pumps are among the highest-rated ducted systems available, with SEER2 ratings up to 22 and sophisticated variable-speed compressors that modulate output rather than cycling on and off. The main caveat: Carrier's Infinity system requires Carrier thermostats and controls, which limits future flexibility. Bryant is the same technology at slightly lower price points through a different distribution channel.
Typical installed cost for a 3-ton Infinity system: $11,000–$17,000.
Lennox
Lennox's XP21 and XP25 series are known for very high SEER2 ratings (up to 23.5) and quiet operation. They're a premium product with premium pricing and tend to attract contractors who focus on high-efficiency installations. Lennox has been slower than some competitors to develop cold-climate models, so they're a stronger choice in heating-mild to moderate climates.
Typical installed cost for a 3-ton system: $10,000–$16,000.
Rheem / Ruud
Rheem and Ruud (same company, different channels) offer solid mid-range heat pumps with good contractor availability and reasonable parts costs. Their Prestige series includes cold-climate models with decent low-temperature performance. For homeowners primarily interested in reliability and cost over peak efficiency, Rheem/Ruud represents solid value.
Typical installed cost for a 3-ton system: $7,000–$11,000.
Bosch
Bosch's IDS 2.0 series has garnered strong reviews for its cold-climate performance and reliability. They're somewhat harder to find installers for than the major brands, but where contractor relationships exist, they deliver competitive efficiency at mid-range prices. Worth considering if you can find a certified Bosch installer in your area.
Installed Cost Ranges (2026)
| System Type | Size | Equipment | Installation | Total Installed |
|---|---|---|---|---|
| Mini-split, single zone | 9,000–18,000 BTU | $800–$2,000 | $800–$1,500 | $1,600–$3,500 |
| Mini-split, multi-zone (3) | 24,000–36,000 BTU | $2,500–$5,000 | $2,000–$4,000 | $4,500–$9,000 |
| Ducted air-source, mid-range | 2–3 tons | $2,500–$4,500 | $3,000–$5,000 | $5,500–$9,500 |
| Ducted air-source, premium | 2–4 tons | $4,000–$7,000 | $4,000–$7,000 | $8,000–$14,000 |
| Ground-source (geothermal) | 3–5 tons | $5,000–$10,000 | $15,000–$25,000 | $20,000–$35,000 |
Rebates Available in 2026
The rebate landscape for heat pumps changed materially at the end of 2025. Here's the current picture:
HEAR Program (survives): Income-qualified households (under 150% area median income) can receive up to $8,000 for a heat pump HVAC system and up to $1,750 for a heat pump water heater through the HEAR program. These are point-of-sale rebates in states with active programs. Use the heat pump rebate calculator to see your state's current status.
HOMES Program (survives): The HOMES modeled-savings pathway can generate up to $4,000 in rebates (or up to $8,000 for income-qualified households) based on projected whole-home energy savings. A heat pump often drives enough projected savings to qualify for the higher tiers. See the HOMES program guide for details.
25C Tax Credit (expired): The 30% tax credit for qualifying heat pumps (capped at $2,000 per year) expired December 31, 2025 under the One Big Beautiful Bill Act. It is not available for 2026 purchases.
Utility Rebates (ongoing): Many utilities continue to offer rebates of $200–$1,500 for qualifying heat pump systems. Check your utility's website or our state pages: California, New York, Florida, Texas. Some utilities with advanced programs (like Mass Save in Massachusetts) offer rebates up to $10,000 on their own.
Our guide on stacking rebates explains how to combine HOMES, HEAR, and utility rebates on a single heat pump installation without violating program rules. In active states, stacked incentives can cover 40–70% of installed costs for income-qualifying households.
Run the rebate calculator before contacting any installers — knowing your incentive situation helps you negotiate and avoids surprises.