Navien heat pumps

2 certified models, ranked by seasonal cooling efficiency (SEER2), then heating efficiency (HSPF2), highest first.

1 NAZ17V6022A1Navien
44,000 Btu/hheating at 47°F 44,000 Btu/hcooling at 95°F
42,000 Btu (3.5-ton) · Central · 5°F 35,400 Btu/h · Cold output 80–81% · HSPF2 9.0 · 2 pairings
2 NAZ17V3622A1Navien
24,400 Btu/hheating at 47°F 22,000 Btu/hcooling at 95°F
24,000 Btu (2-ton) · Central · 5°F 20,000 Btu/h · Cold output 69–84% · HSPF2 8.8 · 12 pairings

Navien heat pumps, ranked by seasonal cooling efficiency (SEER2), then heating efficiency (HSPF2)
#	Model	Brands	Type	Size	At 5°FBtu/h · heating	At 47°FBtu/h · heating	At 95°FBtu/h · cooling	Cold output% of 47°F rating	COP 5°Ffull speed	SEER2median pairing	HSPF2Btu/Wh · median pairing	Compressor	Refrigerant	Market	Pairings
1	NAZ17V6022A1	Navien	Central	42,000 Btu (3.5-ton)	35,400	44,000	44,000	80–81%	2.05	17.7	9.0	Variable	R-454B	US CA	2
2	NAZ17V3622A1	Navien	Central	24,000 Btu (2-ton)	20,000	24,400	22,000	69–84%	2.00	16.8	8.8	Variable	R-454B	US CA	12

The share is heat output at 5°F divided by the 47°F rating. Tests use different compressor speeds.

2 of 2 units

Other sizes

Every size class, with how many units it holds and its median heat output at 5°F