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Premium
Ultimate efficiency meets whisper-quiet premium comfort
The Lennox XP25 is a premium variable-capacity heat pump with the highest SEER2 in our lineup at 20.5. Paired with Lennox's iComfort smart thermostat, it delivers precise temperature and humidity control. The XP25 isn't cold-climate rated but excels in moderate climates.
HSPF2
11
SEER2
20.5
Min Temp
-10°F
Noise
51 dB
Configuration
premium
HSPF2 (Heating Efficiency)
11
Excellent — federal minimum is 7.5 HSPF2
SEER2 (Cooling Efficiency)
20.5
Best in class — federal minimum is 14.3 SEER2
Min Operating Temperature
-10°F
Operating limit only; verify matched-system capacity at the local design temperature.
Noise Level
51 dB
Catalog sound value; check mode, distance and measurement basis before comparing models.
Compressor Warranty
10 Years
Catalog parts term: 5 years. Registration deadlines and coverage conditions vary; see the exact certificate.
Project Pricing
Calculated for your home
Address, system type, tonnage, zones, and installation scope determine the range
Catalog planning comparison of heating capacity, cooling capacity and COP. Verify each value against the exact manufacturer match before equipment selection.
| 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 |
|---|---|---|---|---|---|---|---|---|---|
| 2 Ton | 24,000 BTU/h | 17,400 BTU/h | 14,400 BTU/h | 12,000 BTU/h | 24,000 BTU/h | 3.8 | 2.5 | 2 | 1.6 |
| 3 Ton | 36,000 BTU/h | 26,100 BTU/h | 21,600 BTU/h | 18,000 BTU/h | 36,000 BTU/h | 3.7 | 2.4 | 1.9 | 1.5 |
| 4 Ton | 48,000 BTU/h | 34,800 BTU/h | 28,800 BTU/h | 24,000 BTU/h | 48,000 BTU/h | 3.6 | 2.3 | 1.8 | 1.4 |
| 5 Ton | 60,000 BTU/h | 43,500 BTU/h | 36,000 BTU/h | 30,000 BTU/h | 60,000 BTU/h | 3.5 | 2.2 | 1.7 | 1.3 |
Product-family catalog values are not an AHRI certificate or a site design. Final equipment selection requires current matched-system documentation.
Our installer-grounded read on the Lennox XP25, computed from how its specs compare against the rest of the equipment NuWatt installs.
The Lennox XP25 sits in the premium tier of the heat pumps NuWatt installs — built for homeowners who prioritize comfort, quiet operation, and long-term reliability over upfront cost. Its SEER2 of 20.5 is roughly in line with the median (19) of the products NuWatt installs. The catalog lists operation down to -10°F. Minimum operating temperature alone does not establish cold-climate certification or eliminate backup heat: match the exact indoor/outdoor equipment's heating capacity at the local design temperature to the home's calculated heat loss.
Selection method: DOE Building America cold-climate sizing guidance. Confirm the exact matched equipment and design heat loss before deciding on backup heat.
NuWatt does not have material reservations about this heat pump on the spec sheet. The bigger decisions are usually about home fit: ductless versus ducted, single-zone versus multi-zone, and whether your electrical panel has the capacity to add the unit without an upgrade.
SEER2
+1.5
vs catalog median
HSPF2
median
vs catalog median
Min temp
median
vs catalog median
Compressor warranty
median
vs catalog median
Rebate amounts vary by equipment and income. See what you qualify for.
Check My Eligibility“The XP25 pairs exclusively with Lennox air handlers for full variable-capacity operation. Our team typically installs the iComfort S30 thermostat at the same time. The unit is larger than some competitors, so we confirm clearance during the site survey. Expect 1–2 day install.”
— 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.
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Installed cost depends on the exact tonnage, number of indoor and outdoor units, ductwork, electrical work, access, and local incentives. Use NuWatt's address-based heat-pump calculator for a preliminary project range; a site visit is required before a firm quote.
The catalog shows 2 to 5 ton options. Do not choose tonnage from floor area alone: use room-by-room Manual J loads, the local design temperature, duct airflow and the exact matched system's heating and cooling capacity. Ask for the sizing calculation and AHRI match with the proposal.
The catalog operating limit is -10°F. That does not prove whole-home heating capacity at that temperature or rule out backup heat. Compare the exact AHRI match and low-temperature output with the home's design heat loss before selecting backup or all-electric operation.
Our catalog lists 10-year compressor and 5-year parts terms. Verify the current manufacturer's certificate for the exact model, registration deadline, location, ownership transfer and maintenance conditions. Parts coverage is not automatically installation-labor coverage; request both terms in writing.
Our catalog lists 11 HSPF2 for heating and 20.5 SEER2 for cooling. These are seasonal ratings, not a guaranteed percentage reduction in your bill. Verify the exact AHRI-rated indoor/outdoor combination and applicable equipment category. Compare low-temperature capacity, the local climate, controls, duct losses and the actual electricity and replacement-fuel rates before estimating operating cost.
Our catalog lists an outdoor sound rating of 51 dB. Compare the exact model's manufacturer sound data using the same operating speed, measurement distance and sound-power or sound-pressure basis. Placement, reflections and nighttime operation affect what you hear; a catalog number alone cannot establish which system will be quietest at your home.
