Dometic CFX5 45 vs Dometic CFX5 55IM

Last updated: October 21, 2026

The Dometic CFX5 45 rates 3.7 among mid-size 12V fridges; the Dometic CFX5 55IM rates 3.0 among large ones. The Dometic CFX5 45 costs $149.98 less ($1,049.99 vs $1,199.97).

Dometic CFX5 45 vs Dometic CFX5 55IM

Prices were last checked October 21, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.

Scores side by side

These two sit in different size classes (mid-size and large), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.

Factor weightDometic CFX5 45Dometic CFX5 55IM
Overall rating3.7/53.0/5
Value 35%30 $22.83 per liter16 $21.82 per liter
Efficiency 20%100 about 163 Wh a day (3.5 Wh per liter), measured average draw (OutdoorGearLab)59 about 446 Wh a day (8.1 Wh per liter), maker figure, 1.6 Ah per hour at Internal 4 °C, icemaker on (maintenance), ambient 32 °C
Warranty 20%50 3-year unit50 3-year unit
Build 15%100 display within 0.6 °F in testing50 compressor maker not stated (neutral score used)
Portability 10%72 0.88 lb per liter79 0.81 lb per liter

Independent tests

Dometic CFX5 45

Tested byAverage drawEnergy over 24 hColdest reachedDisplay errorConditions
OutdoorGearLab6.8 W-−2.2 °F0.6 °F75 °F lab, set to 35 °F; steady-state draw on 12 V, coldest reached in 24 h, display checked with loggers.

Dometic CFX5 55IM

No independent test published yet.

Specifications

Dometic CFX5 45Dometic CFX5 55IM
Capacity
Capacity46 L (49 qt)55 L (58 qt)
ZonesSingle zoneSingle zone
Temperature range−8 to 68 °F−8 to 68 °F
Price per liter$22.83$21.82
Power
Energy use163 Wh a day (measured average draw (OutdoorGearLab))446 Wh a day (maker figure, 1.6 Ah per hour at Internal 4 °C, icemaker on (maintenance), ambient 32 °C)
Energy per liter3.5 Wh8.1 Wh
Rated input49 W55 W
BatteryNoneNone
AC adapter includedYesYes
Build
Weight (empty)40.3 lb44.4 lb
App controlYesYes
Warranty3 yr3 yr