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NuWatt designs, installs, and manages solar, battery, heat pump, and EV charger systems across 9 states. One company, one warranty, one point of contact.
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Quilt’s smart ductless system has the headline efficiency number — but a spec sheet isn’t a heating plan. We put Quilt side-by-side with the cold-climate brands NuWatt actually installs across the Northeast and Texas, and answer the question that decides most projects: which one can you get installed in your home?
25.3
Quilt Max SEER2
‒13°F
Quilt Low-Temp Floor
3
Quilt Max Zones
5
Brands We Install
Quiltgenuinely leads on multi-zone efficiency (25.3 SEER2) and smart features — Auto-Away occupancy sensing and over-the-air updates are things mainstream ductless doesn’t offer, and we’ll say so. The brands NuWatt installs lead where it counts for hard New England winters and whole-home retrofits: deeper cold (Mitsubishi’s flagship lines to −22°F), zone count (5–8 heads on one outdoor unit versus Quilt’s 3), a decades-long track record, and — critically — availabilityacross all nine states we serve. For most Northeast and Texas homes the deciding factor isn’t the spec sheet at all; it’s whether you can actually get the system installed and who stands behind it.
Published manufacturer figures, side-by-side. The highlighted row is Quilt’s 3-zone flagship; the rows below are the cold-climate ductless brands NuWatt installs across the Northeast and Texas.
| Brand | System | Max SEER2 | HSPF2 | Low-Temp Floor | Refrigerant | Max Zones | NuWatt installs? |
|---|---|---|---|---|---|---|---|
| Quilt | 3-zone (QO1-M3Z27) | 25.3 | 12 | ‒13 °F | R-32 | 3 | — |
| Mitsubishi | H2i multi-zone (MXZ-SM) | ~23 | up to ~9.3 | ‒13 °F (flagship lines to ‒22 °F) | R-454B | up to 8 | Yes |
| Carrier | Performance 25 (37MGRA) | 25.2 | 10.4 | ‒13 °F | R-454B | up to 6 | Yes |
| Daikin | Aurora multi-zone (MXM) | 21 | 10 | ‒13 °F | R-32 | up to 5 | Yes |
| Fujitsu | AIRSTAGE multi-zone (R-32) | ~22 | 10 | ‒15 °F | R-32 | up to 5 | Yes |
| Bosch | Inverter ductless (cold-climate) | up to ~19 | up to ~10.8 | Rated heat to ‒5 °F (deep-cold multi-zone floor varies) | R-454B | varies | Yes |
Published manufacturer figures; see sources below. SEER2 / HSPF2 and low-temperature ratings vary by exact model and configuration. Quilt technical specifications
The numbers reward careful reading — and a fair one. Here is what the comparison actually tells a homeowner, including where Quilt earns the win.
Efficiency: Quilt’s 25.3 SEER2 / 12 HSPF2 (3-zone) is genuinely class-leading for a MULTI-zone system — it edges Carrier’s 25.2 and beats typical Mitsubishi/Daikin/Fujitsu multi-zone SEER2 (19–23). Credit where due.
Cold-climate floor: Quilt’s ‒13 °F matches Mitsubishi H2i, Carrier, and Daikin multi-zone. Fujitsu AIRSTAGE goes to ‒15 °F, and Mitsubishi’s flagship single-zone lines are rated to ‒22 °F — deeper than Quilt for the very coldest New England nights.
Zones: Quilt caps at 3 indoor heads per outdoor unit; the brands we install support 5–8 zones on one condenser, which matters for whole-home retrofits.
Smart features: Auto-Away radar occupancy sensing and OTA updates are real Quilt advantages mainstream ductless doesn’t offer — worth weighing if smart control is a priority.
The practical deciding factor for most homeowners is availability and installer choice (below), not the spec sheet.
Answer five quick questions and we’ll give you an honest read on whether Quilt or one of the systems NuWatt installs is the better match for your climate, your zone count, and your timeline.
Five quick questions — an honest read on whether Quilt or a system we install fits your home.
In NuWatt’s region, Quilt is hard to get — confirmed in Massachusetts only
Quilt says it is available in 34 US states (May 2026) but does not publish the list, and installs only through its own Certified Installer network — often just one installer per area. Of NuWatt’s nine states (MA, CT, NH, RI, VT, ME, NJ, PA, TX), the only one confirmed as a live Quilt market is Massachusetts (through a single certified installer). Availability in CT, NH, RI, VT, ME, NJ, PA, and TX is unconfirmed — check Quilt’s installer locator by ZIP. If you want a high-efficiency cold-climate ductless system installed across the Northeast or Texas now, the proven brands NuWatt carries are the practical path.
To be plain: NuWatt does not install Quilt.We install proven cold-climate ductless and ducted heat pumps that we can put in across all nine states we serve — with our own crews and our own service behind them. This comparison is here so you can decide fairly, not to talk you out of a system we don’t carry.
Every figure on this page is quoted from a manufacturer primary source.
NuWatt sizes and installs Mitsubishi, Carrier, Daikin, Fujitsu, and Bosch cold-climate systems across all nine states we serve. Get a transparent quote that names the exact equipment and zone count.
Quilt has a real efficiency story and genuinely clever smart features. But for most homes across MA, CT, NH, RI, VT, ME, NJ, PA, and TX, the deciding factors are deep-cold performance, zone count, a proven track record, and whether you can get it installed now. NuWatt installs cold-climate Mitsubishi, Carrier, Daikin, Fujitsu, and Bosch systems with our own crews — and we’ll size the one that actually serves your home.