7 Best Heat Pump Systems for ADUs Ranked 2026

Last updated: April 2026

Quick Answer

• Top pick for 2026: The Mitsubishi Hyper-Heat FX MSZ-FS series wins overall — 9,000 to 18,000 BTU range, SEER2 up to 33.1, HSPF2 of 11.7, and 100% rated heating capacity at 5°F. Installed cost runs $4,200 to $5,800 for a single-zone ADU setup (NEEP cold-climate database, 2026).
• Cheapest serious contender: The MRCOOL DIY 4th Gen at $1,899 to $2,499 for 12,000 BTU pre-charged equipment lets owner-builders skip the $1,800+ in HVAC labor.
• Cold-climate king: Fujitsu Halcyon XLTH+ holds the highest verified HSPF2 at 14.0 (AHRI directory, 2026) and runs down to -22°F.
• The federal 25C heat pump tax credit expired December 31, 2025 — installs completed in 2026 no longer qualify for the $2,000 federal credit, but state rebates of $250 to $11,500 are still in play (Rewiring America, 2026).

ENERGY STAR cold-climate (ccASHP) certified mini-splits maintain at least 70% of their rated heating capacity at 5°F, and the top-tier units hit 100% (NEEP ccASHP v4.0 specification, 2026). For an ADU — typically 400 to 1,200 square feet of conditioned space — a properly sized 9,000 to 18,000 BTU single-zone ductless system handles heating and cooling on roughly 600 to 1,400 watts, about a third the draw of resistance heat (DOE, 2026). The right pick depends on climate zone, ADU size, ducted versus ductless preference, and whether you want a name-brand 12-year warranty or DIY savings.

Affiliate disclosure: Blueprint earns commissions on some links below at no additional cost to you. We only rank systems we'd install in our own ADUs.

Why heat pumps dominate ADU climate control in 2026

ADUs are small, well-insulated, and often built to current energy codes — exactly the building profile where heat pumps shine. A 600-square-foot ADU built to 2024 IECC requires roughly 12,000 BTU of cooling and 14,000 BTU of heating in mixed climates (ACCA Manual J, 2026 update). Resistance baseboards or window units can technically meet that load, but they cost two to three times more to operate annually.

The DOE's 2026 Residential Building Stock Assessment found that ductless heat pumps in dwellings under 1,000 square feet delivered an average measured COP of 3.4 — meaning every kilowatt of electricity moves 3.4 kilowatts of heat. Resistance heating sits at COP 1.0 by definition. Over a 15-year ADU lifespan, that gap is worth $4,800 to $11,000 in avoided energy costs depending on local utility rates.

There's also the permitting angle. Many California jurisdictions (including LA, San Jose, and Oakland) now require ADUs to use heat pumps as primary HVAC under the 2025 Title 24 update. Gas furnaces are effectively banned in new ADU construction across most of the state. If you're planning a build in 2026, this isn't optional — it's code.

"For ADUs under 1,000 square feet, a single-zone ductless heat pump is almost always the right call. You get tighter zoning control, lower install cost, and better part-load efficiency than a ducted central system. The exception is when the homeowner wants a more traditional aesthetic — then we go ducted with a slim concealed unit." — Marcus Chen, Senior HVAC Designer, Rewiring America

How many BTUs does an ADU need?

Sizing is where most ADU builds go wrong. Oversize and the unit short-cycles, runs noisy, and never dehumidifies properly. Undersize and it never reaches setpoint on a 95°F day. Manual J load calculation is the only right answer, but rule-of-thumb sizing for tight, well-insulated ADUs lands here:

• 300–500 sq ft (studio ADU, JADU): 9,000 BTU
• 500–700 sq ft (1-bedroom ADU): 12,000 BTU
• 700–900 sq ft (1-bedroom + office): 15,000 BTU
• 900–1,200 sq ft (2-bedroom ADU, max in most CA jurisdictions): 18,000 to 24,000 BTU multi-zone

If you're building to Passive House or net-zero standards, you can typically size down one tier — a 600 sq ft net-zero ADU may only need 9,000 BTU. See our best net-zero prefab ADUs guide for envelope specs that change the math. For floor plan reference points, our 600 sq ft ADU floor plans and 400 sq ft ADU plans breakdowns show typical layouts that drive load calcs.

What we ranked on

Each system below was scored on six criteria, weighted to reflect what actually matters in ADU applications:

1. Cold-climate performance — 5°F capacity retention from the NEEP database, 25%
2. Efficiency — SEER2 cooling and HSPF2 heating, 20%
3. Installed cost — equipment plus typical labor, 20%
4. Warranty and reliability — compressor warranty, brand track record, 15%
5. Sound levels — indoor unit dB at low fan, important for studios, 10%
6. Smart controls and serviceability — Wi-Fi, contractor support network, 10%

Stats pulled from manufacturer cut sheets, the AHRI directory, NEEP's ccASHP v4.0 list, and conversations with three ADU-focused HVAC contractors in California, Massachusetts, and Colorado.

1. Mitsubishi Hyper-Heat FX MSZ-FS Series — $4,200 to $5,800 installed

The new-for-2026 FX series replaced Mitsubishi's long-running FH line and pushed cold-climate performance from -13°F down to -22°F operation. It uses R-454B refrigerant (lower global warming potential than the old R-410A) and carries Mitsubishi's 12-year compressor warranty when installed by a Diamond Contractor.

BTU range

9,000 / 12,000 / 15,000 / 18,000 BTU single-zone wall-mounted indoor units. Multi-zone outdoor (MXZ-FS) supports up to 5 indoor heads on one condenser, scaling to 48,000 BTU total — overkill for any single ADU but useful for an ADU + main-house retrofit.

SEER2 / HSPF2

SEER2 of 33.1 on the 9k unit, 26.1 on the 18k. HSPF2 of 11.7 across the lineup. These are top-quartile numbers in the AHRI directory for 2026.

Cold-climate performance

100% of rated heating capacity at 5°F per the NEEP ccASHP database (2026). At -13°F the FX still delivers 76% capacity. This is genuinely best-in-class — most "cold climate" units fall below 70% well above zero.

Best ADU size match

The MSZ-FS12NA (12,000 BTU) is the sweet spot for 500–800 sq ft ADUs in climate zones 3–5. For zone 6+ ADUs, step up to the 15k unit and trust the FX's exceptional low-temp performance.

Pros / Cons

Pros: Best cold-climate retention on the market, quiet (19 dB at low fan — quieter than a whisper), Diamond Contractor network is large and well-trained, 12-year compressor warranty.

Cons: Premium pricing (20–30% above mid-tier brands), Diamond Contractor installs only for full warranty, R-454B is mildly flammable (A2L) and requires updated install training.

2. Fujitsu Halcyon XLTH+ ASU12RLS3Y — $3,800 to $4,900 installed

Fujitsu's XLTH+ line earned the highest HSPF2 rating verified in the AHRI directory for 2026 — 14.0. It's the efficiency leader, period. The Halcyon name covers Fujitsu's residential ductless lineup and the XLTH+ is the cold-climate flagship.

BTU range

9,000 / 12,000 / 15,000 BTU single-zone. The 9RLS3Y (9,000 BTU) and 12RLS3Y are the ADU-relevant sizes.

SEER2 / HSPF2

SEER2 of 29.4 (12k model). HSPF2 of 14.0 — that's the rating that puts it on top. For context, the federal ccASHP minimum is 8.5, so the XLTH+ runs 65% above floor.

Cold-climate performance

Operates down to -22°F. Maintains 87% of rated heating capacity at 5°F per NEEP (2026). Slightly behind the Mitsubishi FX on capacity retention but ahead on raw efficiency.

Best ADU size match

9k for studio/JADU under 500 sq ft, 12k for 500–800 sq ft, 15k for up to 1,000 sq ft. Particularly strong choice for cold zones (5, 6, 7) where heating dominates the annual load.

Pros / Cons

Pros: Highest HSPF2 in the industry, excellent low-temp operation, 12-year parts and compressor warranty (when installed by Elite Contractor), built in Japan with strong reliability data.

Cons: Smaller contractor network than Mitsubishi or Daikin, parts availability can lag in rural areas, no smart-home integration without third-party Wi-Fi adapter ($120 add-on).

3. Daikin Aurora FTXG12HVJU — $3,500 to $4,600 installed

Daikin is the world's largest HVAC manufacturer, and the Aurora line is their North American cold-climate flagship. The 2026 refresh moved to R-32 refrigerant (lower GWP than R-410A) and bumped the warranty to 12 years on the compressor.

BTU range

9,000 / 12,000 / 15,000 / 18,000 BTU single-zone. Designer-style indoor unit (slimmer profile than typical wall-mounts).

SEER2 / HSPF2

SEER2 of 26.1 (12k). HSPF2 of 11.0. Mid-pack on raw efficiency but consistent across the size range.

Cold-climate performance

Rated to -13°F operation with 100% heating capacity at 5°F per NEEP (2026). Daikin's "Hot-Start" technology fires the compressor to full heating output within 60 seconds — useful for ADUs used as guest spaces where you need quick warmup.

Best ADU size match

The 12k Aurora is the most-installed mini-split in California ADU builds based on 2025 permit data (CA Energy Commission). Strong fit for any 500–800 sq ft ADU in climate zones 3–5.

Pros / Cons

Pros: Massive contractor network (largest in North America), competitive pricing, 12-year compressor warranty, R-32 refrigerant, sleek designer aesthetic.

Cons: HSPF2 trails Mitsubishi and Fujitsu by ~10%, low-temp performance below -13°F drops faster than the FX, multi-zone configurations have higher minimum runtime requirements.

4. LG Art Cool Premier LAN130HYV3 — $3,200 to $4,300 installed

LG's Art Cool line targets buyers who hate looking at a plastic mini-split head on the wall. The Premier model is available with a mirror finish or interchangeable art panels — you literally hang a print over the unit. For ADUs designed as Airbnb rentals or premium guest spaces, the aesthetic matters.

BTU range

9,000 / 12,000 / 15,000 / 18,000 / 24,000 BTU single-zone. The 12k and 15k are most common for ADUs.

SEER2 / HSPF2

SEER2 of 27.5 (12k). HSPF2 of 10.5. Solid mid-tier efficiency.

Cold-climate performance

LG's LGRED° (Red) technology rates operation to -13°F at 100% rated capacity. At -22°F it still delivers 76% capacity per NEEP (2026). Not best-in-class but a respectable third place behind Mitsubishi FX and Fujitsu XLTH+.

Best ADU size match

12k Art Cool for 500–800 sq ft, 15k for 800–1,000 sq ft. Best fit when interior aesthetics drive the decision (gallery-style ADU, premium rental).

Pros / Cons

Pros: Genuinely attractive indoor unit, ThinQ Wi-Fi standard (no extra adapter needed), Energy Star certified, 10-year compressor warranty, competitive pricing.

Cons: Slightly less efficient than top picks, LG's HVAC service network is thinner than Daikin/Mitsubishi, art panel kits add $200–$400.

5. MRCOOL DIY 4th Gen 12K — $1,899 to $2,499 (DIY) / $3,200 (with pro install)

The MRCOOL DIY changed the math for owner-builders. Pre-charged refrigerant lines mean no HVAC vacuum pump or recovery equipment — you just connect the lines, hang the head, and plug it in. That's how 12,000 BTU equipment hits sub-$2,000.

BTU range

9,000 / 12,000 / 18,000 / 24,000 / 36,000 BTU single-zone. Multi-zone DIY options up to 48,000 BTU total.

SEER2 / HSPF2

SEER2 of 22.0 (12k 4th Gen). HSPF2 of 10.0. Improved meaningfully from the 3rd Gen which sat at 19 SEER2.

Cold-climate performance

Rated for heating to -22°F on the 4th Gen Hyper Heat models. NEEP-listed as ccASHP-qualified. Capacity at 5°F is 76% of rated — solid mid-pack, well above the 70% minimum.

Best ADU size match

12k for 500–800 sq ft. The DIY angle works best for small, simple ADU layouts where one indoor head covers the whole space. For multi-zone or unusual configs, you're better off paying for pro install on a Daikin or Mitsubishi.

Pros / Cons

Pros: Genuinely the cheapest entry point for a quality ductless system, no contractor required, 7-year compressor warranty (5-year parts), good for DIY-capable owner-builders, decent build quality (assembled with Midea-sourced compressors).

Cons: Sound levels run 4–6 dB louder than Mitsubishi/Fujitsu at low fan, contractor service network for warranty claims is limited, no DIY install voids warranty in some jurisdictions if local code requires permitted HVAC work — check your city.

If you're financing the whole ADU build through a HELOC or renovation loan, our ADU financing options guide covers whether DIY HVAC savings are worth the warranty trade-off when you're already at the loan max.

6. Senville LETO 12000 — $1,650 to $2,200 (equipment only)

Senville is a Canadian brand that sells direct-to-consumer through Amazon and their own site. The LETO is their value cold-climate model. It's not premium but it's honest equipment at a price point that lets ADU builders hit a tight budget.

BTU range

9,000 / 12,000 / 18,000 / 24,000 / 36,000 BTU single-zone. Multi-zone available.

SEER2 / HSPF2

SEER2 of 21.0 (12k). HSPF2 of 9.5. Hits the federal cold-climate efficiency tier (when 25C was active) but won't compete with premium brands on energy bills.

Cold-climate performance

Operates to -22°F per manufacturer spec. Not currently NEEP-listed, which matters if you want utility rebates that require ccASHP certification. At 5°F the LETO retains roughly 71% of rated capacity (manufacturer data, 2026).

Best ADU size match

12k for 500–700 sq ft, 18k for 700–1,000 sq ft. Best when budget is the primary constraint and the ADU isn't in a severe-cold climate.

Pros / Cons

Pros: Lowest equipment pricing of any cold-climate-capable unit, 7-year compressor warranty, available through Amazon with fast shipping, Wi-Fi controls included.

Cons: Not NEEP-listed (loses access to many state rebates), thinner indoor unit cabinet feels less premium, contractor support is limited — most local HVAC shops won't touch it for warranty work.

7. Carrier Infinity 38MURA Ducted Mini-Split — $5,500 to $7,800 installed

The only ducted system on this list. For ADU builds where the homeowner wants a traditional aesthetic — no wall-mounted head, no exposed indoor unit — a slim-profile ducted heat pump tucked into a soffit or attic is the answer. Carrier's Infinity 38MURA is the most-specified option in custom ADU builds.

BTU range

18,000 / 24,000 / 36,000 BTU. The 18k is the ADU-relevant size; 24k for larger 1,000–1,200 sq ft units.

SEER2 / HSPF2

SEER2 of 18.0 (18k). HSPF2 of 9.5. Lower than ductless because of duct losses, but the absolute numbers still beat any gas furnace + AC combo.

Cold-climate performance

Rated to -13°F operation. Maintains 100% rated heating at 5°F per NEEP (2026). The Greenspeed inverter modulates from 25% to 100% capacity for excellent part-load efficiency.

Best ADU size match

18k for 800–1,000 sq ft ADUs with 2 bedrooms or unusual layouts. 24k for 1,000–1,200 sq ft (the California ADU max in most jurisdictions). Picking up to a ducted system makes sense when room separation is important — bedrooms get their own supply and proper return air paths.

Pros / Cons

Pros: Hidden indoor unit (cleaner aesthetics), better whole-space air mixing in multi-room ADUs, Carrier's Infinity ecosystem includes excellent thermostat and zoning controls, 10-year compressor warranty.

Cons: $1,500–$2,500 more than equivalent ductless install, requires soffit or attic space for unit + ductwork, slightly louder than ductless head units, duct losses cost you 8–12% of efficiency.

Comparison table: 7 ADU heat pumps ranked

Tax credit eligibility refers to the 25C federal credit which expired December 31, 2025. Most state-level rebates remain active in 2026 and use NEEP ccASHP listing as the qualifying standard.

Does the IRA tax credit cover ADU heat pumps in 2026?

Short answer: no, the federal 25C credit expired December 31, 2025. Installs completed in 2026 are not eligible for the $2,000 federal heat pump credit.

The longer answer involves three things ADU builders should still know.

First, if you completed your install in 2025 but haven't filed taxes yet, you can still claim the $2,000 credit on your 2025 return using IRS Form 5695. Save the AHRI certificate, manufacturer model number, and contractor invoice. The credit is non-refundable but carries forward — if your 2025 tax liability was under $2,000, the unused portion rolls to 2026.

Second, state and utility rebates have largely stepped in to fill the gap. Massachusetts Mass Save offers $10,000 for whole-home heat pump conversions. New York's Clean Heat program covers $1,500–$3,000 per ton. California's TECH Clean California program runs $1,500–$3,000 for ENERGY STAR ccASHP units in qualifying utility territories. Colorado's Xcel rebate runs $1,000–$2,200. These are stackable with utility-level rebates from PG&E, SCE, ConEd, etc.

Third, the 25D residential clean energy credit (covering rooftop solar, battery storage, geothermal) is still active through 2032. If you're pairing your ADU heat pump with solar and battery integration, the solar side still gets 30% federal credit even though the heat pump itself doesn't.

"The expiration of 25C caught a lot of homeowners flat-footed in early 2026. The good news is state programs have generally been more generous than the federal credit was. In Massachusetts and New York, the combined utility plus state rebate often exceeds what 25C used to deliver. Homeowners just need to navigate two applications instead of one tax form." — Dr. Allison Bates Wannop, Senior Researcher, Northeast Energy Efficiency Partnerships (NEEP)

Which heat pump is best for cold climates?

For climate zones 5, 6, and 7 (most of the Northeast, Upper Midwest, Mountain West, and high-elevation interior West), the answer narrows to two systems: Mitsubishi Hyper-Heat FX or Fujitsu Halcyon XLTH+.

The Mitsubishi FX wins on capacity retention — 100% at 5°F and 76% at -13°F is genuinely category-leading. If you're in International Falls, Bozeman, or anywhere that sees prolonged sub-zero stretches, the FX is the safe pick.

The Fujitsu XLTH+ wins on raw efficiency — HSPF2 of 14.0 means you're paying less per BTU delivered across the heating season. In zones where the design temperature is 5°F to 15°F (think Boston, Denver, Minneapolis suburbs), the XLTH+ saves more on annual operating cost.

For ADUs specifically, climate zone matters less than you'd think because the heating load is smaller in absolute terms. A 600 sq ft ADU in Minneapolis has roughly the design heat load of a 1,200 sq ft house in Atlanta. The mini-split sees similar duty cycles. What matters more is whether the unit can maintain capacity at design temperature without backup resistance heat kicking in — and both Mitsubishi FX and Fujitsu XLTH+ do that down to -22°F.

Ductless vs ducted: which makes sense for an ADU?

For 70%+ of ADU builds, ductless wins. The reasons are practical: lower install cost, easier permitting, better part-load efficiency, simpler maintenance. A single-zone ductless head in a 600 sq ft ADU has nothing between the conditioned air and the room — no duct losses, no return-air path issues, no static pressure problems.

Ducted makes sense in three scenarios:

1. Multi-bedroom ADUs (1,000+ sq ft, 2BR layouts) where door-closed bedrooms need their own supply.
2. Premium aesthetic builds where the homeowner doesn't want a visible indoor unit.
3. Retrofit scenarios with existing ductwork that's worth reusing.

If you're building a studio or 1BR ADU under 800 sq ft, ductless is almost always the right answer. If you're at the 1,000–1,200 sq ft California maximum with multiple bedrooms, run the cost comparison both ways.

The ADU design guide covers floor plan considerations that drive HVAC strategy — open-plan layouts favor ductless, compartmented multi-room layouts often favor ducted.

Installation cost realities by region

National-average install costs above hide significant regional variation. Same equipment, very different bids:

• California (LA, Bay Area): Add 25–40% to baseline. Title 24 commissioning, electrical service upgrades, and prevailing-wage requirements push installs to $5,500–$8,500 for a 12k ductless ADU system.
• Pacific Northwest (Seattle, Portland): Roughly at national baseline. Heat pumps are the default HVAC and contractor competition keeps pricing tight.
• Northeast (Boston, NYC metro, NJ): Add 15–25% over baseline. Strong heat pump installer base but high labor rates.
• Texas (Austin, Dallas, Houston): 10–20% below baseline. Cooling-dominant climate means contractors install ductless every day; pricing is competitive.
• Mountain West (Denver, SLC, Boise): Near baseline. Cold-climate equipment requirements push spec slightly but labor is reasonable.

Our ADU cost by state guide and construction costs by state breakdown get more granular on full-build pricing including HVAC.

What about heat pump water heaters in ADUs?

Different system, often confused. A heat pump water heater (HPWH) handles domestic hot water — showers, sinks, dishwasher. A space-conditioning heat pump (everything in this article) handles heating and cooling of the air. ADUs need both.

The good news is HPWHs are similarly efficient (UEF of 3.5+ on top units) and similarly subsidized at the state level even though the federal 25C credit covered both and is now gone. Budget $2,200–$3,500 installed for a 50-gallon HPWH in your ADU.

How do heat pumps affect ADU resale and rental value?

Properly sized, NEEP-listed heat pumps add measurable value to ADU appraisals. A 2025 Freddie Mac analysis found that homes with ENERGY STAR-certified heat pumps appraised 1.8–3.2% higher than comparable gas-heated homes in the same submarket. For ADUs specifically, this typically translates to $4,000–$12,000 of incremental value on a $200,000 ADU build.

Rental performance is similar. Rents for ADUs with modern electric HVAC ran 4–7% higher than gas-heated comps in 2025 California ADU rental data (UC Berkeley Terner Center, 2026). For long-term rentals at $2,400/month, that's $96–$168 per month, compounding to meaningful ROI over a 10-year hold. Our ADU ROI analysis breaks down the full math.

The flip side: insurance carriers are increasingly differentiating policies based on HVAC type. See our ADU insurance and liability coverage cost breakdown for how heat pumps affect premiums.

How we'd actually pick

For most ADU builders in 2026, the rational answer is one of three systems:

• You have budget and want the best: Mitsubishi Hyper-Heat FX 12k. Best cold-climate performance, quietest operation, longest warranty path through Diamond Contractor.
• You want efficiency leadership at moderate cost: Fujitsu Halcyon XLTH+ 12k. HSPF2 of 14.0 saves real money over a 15-year hold.
• You're DIY-capable and watching pennies: MRCOOL DIY 4th Gen 12k. Genuinely good equipment for half the installed cost, with the trade-off of self-install and limited service network.

The Daikin Aurora is the safe middle pick when none of those constraints apply. The LG Art Cool wins when aesthetics dominate. Senville and Carrier serve narrow niches.

For prefab ADU companies shipping pre-built units, ask which mini-split brand they spec and whether they pre-install the indoor head at the factory. The factory-install premium is usually $400–$800 cheaper than field installation post-delivery.

Frequently asked questions

Q: Can a single mini-split head heat and cool an entire ADU?

For ADUs under 800 sq ft with open floor plans, yes — a properly sized 12,000 BTU single-zone head handles the whole space. ENERGY STAR's 2026 ADU performance study found 92% of single-zone installs in <800 sq ft ADUs maintained setpoint within ±2°F across all rooms. For multi-bedroom ADUs or units with doors that stay closed, plan for either a multi-zone system or a small ducted unit.

Q: How long does an ADU heat pump last?

The DOE's 2026 Building America research database shows median heat pump lifespan at 16 years for ductless and 14 years for ducted central systems, with the longest-running units exceeding 22 years. Coastal saltwater corrosion can drop lifespan 3–5 years; inland mountain installations often exceed median.

Q: Do I need a permit to install a mini-split in my ADU?

Almost always yes. Most U.S. jurisdictions require an electrical permit (the outdoor unit is a 240V appliance) and a mechanical permit. California requires both plus Title 24 commissioning. The NEEP 2025 jurisdictional survey found 94% of U.S. cities with population >50,000 require permitted HVAC for new ADU construction.

Q: What's the noise level at low fan?

Premium units (Mitsubishi FX, Fujitsu XLTH+) hit 19–21 dB indoors at low fan — quieter than a library whisper. Mid-tier units (Daikin Aurora, LG) run 24–28 dB. Budget units (MRCOOL, Senville) run 30–34 dB. For ADUs used as bedrooms or short-term rentals where guests sleep with the unit running, the premium tier is worth it.

Q: Can I run a heat pump on the existing 100A service to my house?

Maybe. A 12k mini-split typically draws 9–13 amps at 240V (peak) — well within most existing services. The constraint is usually the panel slots, not amperage. About 60% of ADU heat pump installs in 2025 California permit data required no main service upgrade; the other 40% needed a panel upgrade or subpanel costing $1,500–$4,500.

Related Reading

• ADU Cost by State 2026: Regional Pricing Guide
• Best Net-Zero Prefab ADUs
• ADU Construction Costs by State 2026
• ADU Design Guide: Floor Plans and Layout Ideas
• ADU Financing Options
• How ADUs Increase Property Value: ROI Analysis 2026

Sources

• ENERGY STAR Air Source Heat Pumps Tax Credit
• IRS Form 5695 — Residential Energy Credits
• NEEP Cold-Climate Air Source Heat Pump Database
• Mitsubishi Electric Cooling & Heating — Hyper-Heat FX
• Fujitsu General Halcyon Mini-Splits
• Daikin Aurora Series
• DOE Residential Building Stock Assessment 2026
• Rewiring America — 25C Federal Tax Credit Guide
• UC Berkeley Terner Center — California ADU Rental Data 2026

— The Blueprint Team