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Cold Climate
Quiet, powerful, and built for extreme cold
The LG Red Series is a cold-climate champion with the lowest noise output in our lineup at just 50 dB. LG's LGRED technology maintains full heating capacity at extremely low temperatures, backed by a strong HSPF2 of 11.8 and near-premium SEER2 of 19.5.
HSPF2
11.8
SEER2
19.5
Min Temp
-13°F
Noise
50 dB
Configuration
cold climate
HSPF2 (Heating Efficiency)
11.8
Excellent — federal minimum is 7.5 HSPF2
SEER2 (Cooling Efficiency)
19.5
Excellent — federal minimum is 14.3 SEER2
Min Operating Temperature
-13°F
Operating limit only; verify matched-system capacity at the local design temperature.
Noise Level
50 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 | 18,600 BTU/h | 15,600 BTU/h | 13,200 BTU/h | 24,000 BTU/h | 3.9 | 2.7 | 2.1 | 1.7 |
| 3 Ton | 36,000 BTU/h | 27,900 BTU/h | 23,400 BTU/h | 19,800 BTU/h | 36,000 BTU/h | 3.8 | 2.6 | 2 | 1.6 |
| 4 Ton | 48,000 BTU/h | 37,200 BTU/h | 31,200 BTU/h | 26,400 BTU/h | 48,000 BTU/h | 3.7 | 2.5 | 1.9 | 1.5 |
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 LG Red Series, computed from how its specs compare against the rest of the equipment NuWatt installs.
The LG Red Series is a cold-climate heat pump engineered for the kind of winters NuWatt installs into across New England, the Mid-Atlantic, and Texas Panhandle communities. Its SEER2 of 19.5 is roughly in line with the median (19) of the products NuWatt installs. The catalog lists operation down to -13°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
+0.5
vs catalog median
HSPF2
+0.8
vs catalog median
Min temp
-3°F
vs catalog median
Compressor warranty
median
vs catalog median
How this unit handles New England's coldest days
Rated Operating Minimum
-13°F
Operating limit—not proof of whole-home capacity at that temperature
COP at -5°F
1.7
Produces 170% of input energy as heat even at -5°F
Capacity Retention at -5°F
55%
Percentage of rated 47°F capacity maintained at -5°F
47°F
100%
24,000 BTU/h
17°F
78%
18,600 BTU/h
5°F
65%
15,600 BTU/h
-5°F
55%
13,200 BTU/h
Rebate amounts vary by equipment and income. See what you qualify for.
Check My Eligibility“LG's quick-connect fittings and lightweight outdoor unit make installation efficient. The system uses R-410A refrigerant and standard linesets. For multi-zone setups, the branch box mounts compactly in a utility area. Typical install: 1 day.”
— 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 4 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 lists operation down to -13°F. Confirm low-temperature capacity and efficiency for the exact matched system, then compare its output with the home's design heat loss. COP is heat output divided by electrical input, not a percentage saving on your bill. A minimum operating temperature alone does not establish that the system can heat the whole home without supplemental heat.
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 11.8 HSPF2 for heating and 19.5 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 50 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.
