Loading NuWatt Energy...
We use your location to provide localized solar offers and incentives.
We serve MA, NH, CT, RI, ME, VT, NJ, PA, and TX
Loading NuWatt Energy...
Cold Climate
Ductless cold-climate specialist with -15°F rated operation
The Fujitsu Halcyon XLTH is built for extreme cold with a -15°F minimum operating temperature — the lowest in our lineup alongside the Carrier Greenspeed. Fujitsu's decades of ductless expertise shine in this quiet, compact, highly efficient unit.
HSPF2
12
SEER2
18
Min Temp
-15°F
Noise
49 dB
Installed
$5,000–$11,000
HSPF2 (Heating Efficiency)
12
Exceptional — federal minimum is 7.5 HSPF2
SEER2 (Cooling Efficiency)
18
Excellent — federal minimum is 14.3 SEER2
Min Operating Temperature
-15°F
Extreme cold rated — handles the harshest winters
Noise Level
49 dB
Ultra-quiet — barely noticeable outdoors
Compressor Warranty
10 Years
5-year parts warranty — register within 90 days of install
Installed Price Range
$5,000–$11,000
Includes equipment, labor, and permits — varies by size and complexity
Heating capacity, cooling capacity, and COP at standard AHRI test temperatures
| Size | Heating @ 47°F | Heating @ 17°F | Heating @ 5°F | Heating @ -5°F | Cooling @ 95°F | COP @ 47°F | COP @ 17°F | COP @ 5°F | COP @ -5°F | Est. Price |
|---|---|---|---|---|---|---|---|---|---|---|
| 1.5 Ton | 18,000 BTU/h | 14,400 BTU/h | 12,000 BTU/h | 10,200 BTU/h | 18,000 BTU/h | 3.9 | 2.7 | 2.1 | 1.7 | $5,000 |
| 2 Ton | 24,000 BTU/h | 19,200 BTU/h | 16,000 BTU/h | 13,600 BTU/h | 24,000 BTU/h | 3.8 | 2.6 | 2 | 1.6 | $7,000 |
| 3 Ton | 36,000 BTU/h | 28,800 BTU/h | 24,000 BTU/h | 20,400 BTU/h | 36,000 BTU/h | 3.7 | 2.5 | 1.9 | 1.5 | $11,000 |
Capacity and COP values based on manufacturer-published data at AHRI standard conditions. Installed prices are estimates and may vary.
How this unit handles New England's coldest days
Rated Operating Minimum
-15°F
Handles the most extreme New England cold snaps
COP at -5°F
1.7
Produces 170% of input energy as heat even at -5°F
Capacity Retention at -5°F
57%
Percentage of rated 47°F capacity maintained at -5°F
47°F
100%
18,000 BTU/h
17°F
80%
14,400 BTU/h
5°F
67%
12,000 BTU/h
-5°F
57%
10,200 BTU/h
“The Halcyon XLTH is a ductless specialist — ideal for older homes without ductwork. Our crews mount the compact outdoor unit with minimal clearance, and indoor wall-mounted or ceiling cassette heads install cleanly with small 3-inch wall penetrations. Multi-head setups work great for zoned comfort.”
— NuWatt Energy Install Team
A heat pump increases your electricity usage by 3,000–6,000 kWh per year. Offset that cost with solar panels and power your heating with free sunshine. NuWatt designs integrated solar + heat pump systems for maximum savings.
The Fujitsu Halcyon XLTH costs between $5,000 and $11,000 fully installed by NuWatt Energy. The final price depends on your home’s size, the tonnage you need, and installation complexity. Note that the federal 25C heat pump tax credit expired at the end of 2025, so there is no federal credit available in 2026. However, state rebates and utility incentives may still apply.
The Fujitsu Halcyon XLTH is available in 3 sizes from 1.5 to 3 ton. A general guideline is 1 ton per 500–600 square feet, but proper sizing depends on your home’s insulation, climate zone, and layout. NuWatt performs a Manual J load calculation during your free consultation to determine the exact size.
Yes. The Fujitsu Halcyon XLTH is rated to operate down to -15°F, making it a strong choice for New England winters. At 5°F, it maintains a COP of 2.1, meaning it produces 210% more heat energy than the electricity it consumes. Supplemental heat strips may still be needed during the very coldest hours.
The Fujitsu Halcyon XLTH comes with a 10-year compressor warranty and a 5-year parts warranty. NuWatt also provides our own workmanship warranty covering installation labor. Be sure to register your product with Fujitsu within 90 days of installation to activate the full warranty.
The Fujitsu Halcyon XLTH has an HSPF2 of 12 (heating) and SEER2 of 18 (cooling). For context, the minimum federal standard is 7.5 HSPF2 and 14.3 SEER2, so this unit is 60% more efficient for heating and 26% more efficient for cooling than the baseline. Higher efficiency means lower monthly energy bills.
The outdoor unit operates at 49 dB, which is quieter than a normal conversation (about 60 dB) and comparable to a quiet office. For comparison, the quietest unit in our lineup is 49 dB (Fujitsu Halcyon) and the loudest is 60 dB (Goodman GSZC18).
