Nortek Global HVAC heat pumps: how do their ratings compare?

A typical Nortek Global HVAC heat pump beats 51% of similar heat pumps (same size and type), which is about average. Nortek Global HVAC has 75 heat pump models in this list, also sold as Broan, Frigidaire, Gibson, Intertherm, Maytag and 5 more names.

Covers older R-410A heat pumps, no longer installed new. See models sold today · Updated Oct 10, 2026

Overall score

51%

of similar heat pumps beaten by its typical model

About average

Ranked 20 among brands with a QMID on file. Based on 55 models with every rating.

Nortek Global HVAC, rating by ratingStrongest on heating power kept at 5°f (beats 64%), weakest on winter-long heating efficiency (beats 38%).

Efficiency on a 5°F dayCOP at 5°FBeats 44%
Heating power kept at 5°FCapacity at 5°F vs 47°FBeats 64%
Winter-long heating efficiencyHSPF2Beats 38%
Summer-long cooling efficiencySEER2Beats 39%
Hot-day cooling efficiencyEER2Beats 46%

Average (50%)

Each bar: the share of similar heat pumps a typical model beats on that rating.

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Rebate standards

Share of this brand’s models that meet the efficiency levels rebate programs use. Programs can have other rules too.

39%
meet CEE 2025 Tier 1, the level many utility rebates use.
29 models. All brands: 48%.
See them
41%
meet Xcel Energy Colorado’s cold-climate rebate levels.
31 models. All brands: 38%.
See them
0%
reach the cold-climate tier: full heating output and a COP of 2.1 or more at 5°F.
None of its models yet. All brands: 1%.

Top Nortek Global HVAC cold-climate picks, by size

Only units that keep at least 70% of their heat at 5°F, ranked on heat kept, efficiency at 5°F and seasonal efficiency (HSPF2), against units their size.

Showing Ducted, 2.5–3 tons (27,000–38,999 Btu/h cooling), the most-listed ducted size. Pick yours above. What size is my system?

7 of Nortek Global HVAC’s 21 models of this size and type qualify.

1WHU36SZA21Swith ducted air handler WHU36DHA21SNortek Global HVAC (sold as Westinghouse)3 tons · 36,000 Btu/h · DuctedKeeps 76% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
Heat kept at 5°F
76% (Capacity at 5°F vs 47°F)
Good
Efficiency at 5°F
2.20 (COP at 5°F)
Great
Seasonal efficiency
9.5 (HSPF2)
Great
78.1score / 100
2WHM36SZA21Swith ducted air handler DC37A44-210LNortek Global HVAC (sold as Westinghouse)2.5 tons · 30,000 Btu/h · DuctedKeeps 81% of its heat at 5°FMeets Xcel CC
Heat kept at 5°F
81% (Capacity at 5°F vs 47°F)
Good
Efficiency at 5°F
2.08 (COP at 5°F)
Great
Seasonal efficiency
9.4 (HSPF2)
Great
75.5score / 100
3WHP36M4A21SNortek Global HVAC (sold as Westinghouse)2.5 tons · 32,000 Btu/h · DuctedKeeps 113% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
Heat kept at 5°F
113% (Capacity at 5°F vs 47°F)
Top 10%
Efficiency at 5°F
1.84 (COP at 5°F)
Below the middle
Seasonal efficiency
8.9 (HSPF2)
Good
69.2score / 100
4GXH24-36MSK4DHwith ducted air handler GMH**-36MSK4DH1Nortek Global HVAC (sold as Nortek)3 tons · 34,000 Btu/h · DuctedKeeps 80% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
Heat kept at 5°F
80% (Capacity at 5°F vs 47°F)
Good
Efficiency at 5°F
1.80 (COP at 5°F)
Below the middle
Seasonal efficiency
9.0 (HSPF2)
Good
55.3score / 100
5GXH30(8.8)FMK4DH-1Nortek Global HVAC (sold as Gibson)2.5 tons · 28,400 Btu/h · DuctedKeeps 89% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
Heat kept at 5°F
89% (Capacity at 5°F vs 47°F)
Great
Efficiency at 5°F
1.80 (COP at 5°F)
Below the middle
Seasonal efficiency
8.1 (HSPF2)
Below the middle
54.7score / 100

These are certified test ratings, not a recommendation for your home. The right size comes from a load calculation by a contractor.

What to do next

The advanced view has Nortek Global HVAC’s ranks on each rating, its models inside every size and type, cold-weather curves and its newest certifications.

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