SpecDirectory

Century MZ(L/R/B/P/T/K)042AvsGeoStar 103J042**1

Side-by-side geothermal heat pump comparison

Century MZ(L/R/B/P/T/K)042A

EER

20.4–25.7BTU/Wh

COP

3.80–4.40

Refrigerant

Other

Rated Across

2loop types

GeoStar 103J042**1

EER

19.5–25.6BTU/Wh

COP

3.90–4.80

Refrigerant

R-410A

Rated Across

2loop types

Key differences

Both models are closely matched on eer: 25.7 vs 25.6 BTU/Wh. The Century MZ(L/R/B/P/T/K)042A is larger at 25.7 BTU/Wh versus 25.6 BTU/Wh.

Efficiency

SpecCenturyGeoStar
EER (best configuration)(BTU/Wh)25.725.6
EER (worst configuration)(BTU/Wh)20.419.5
COP (best configuration)4.404.80
COP (worst configuration)3.803.90

Configuration

SpecCenturyGeoStar
Loop Types Rated22
Total Configurations Rated24
Model NameTranquility 24 Versatile Two-StageAston
RefrigerantOtherR-410A
View MZ(L/R/B/P/T/K)042A specs →View 103J042**1 specs →

More comparisons

5 SERIES INDOOR SPLITS NSZ030H1vs Century MZ(L/R/B/P/T/K)042A5 SERIES INDOOR SPLITS NSZ042J1vs Century MZ(L/R/B/P/T/K)042AArcoaire HB042V******1**1vs Century MZ(L/R/B/P/T/K)042AASTON 103H030**1vs Century MZ(L/R/B/P/T/K)042A