Dometic CFX3 35 at a glance
In short: the Dometic CFX3 35 scores 9,0/10 in our compressor cool box review (from €649). Biggest strength: premium compressor. Main compromise: premium price.
With dimensions of 60 × 38 × 41 cm it is one of the more compact devices in its class. All specifications come from manufacturer data sheets and the Amazon catalogue and were cross-checked before publication. The rating is an editorial overall assessment based on this data; we do not trial products ourselves.
Dometic CFX3 35: what works, what doesn't?
What works well
- Premium compressor: Secop BD35, the most reliable oscillating compressor on the market
- App control: Dometic app via Wi-Fi + Bluetooth: temperature, modes, logging
- TFT colour display: High contrast, easy to read even in sunlight
- Freezing down to −22 °C: A true mobile freezer, not just a cooling compartment
- Robust ExoFrame construction: Aluminium frame with shock absorbers, motorhome-ready
- 5 years warranty: 2+3 after registration, best service on the market
- Very efficient: 0.47 kWh/day, class C
- Stainless steel interior: Food safe, easy to clean
Points of criticism
- Premium price: €649 to €899 (3× more expensive than the Alpicool CX40)
- Heavy: 16.9 kg, two people recommended for lifting
- 230 V adapter separate: The adapter is included in the box, but separate
- Only 36 L: For family trips, rather the CFX3 45 or 55
Specifications in detail
| Manufacturer | Dometic Group AB (Sweden) |
| Model | CFX3 35 |
| Device type | Compressor cool box (mobile freezer) |
| Volume | 36 litres (50 cans of 330 ml) |
| Cooling range | −22 °C to +10 °C |
| Connection | DC 12 V / 24 V + AC 100 to 240 V |
| Energy consumption | 0.47 kWh / 24 h |
| Energy class | C (formerly A+++) |
| Compressor | Secop BD35, premium oscillating compressor |
| Refrigerant | R134a |
| Display | High-contrast TFT colour display |
| App control | Dometic CFX3 app (iOS/Android, Wi-Fi + Bluetooth) |
| Weight | 16.9 kg |
| Dimensions (L × W × H) | 60 × 38 × 41 cm |
| Interior | Stainless steel lining |
| USB port | USB-A 5 V / 1.5 A for smartphone |
| Battery protection | 3 levels (low / medium / high) |
| Noise level | about 39 dB(A) |
| Warranty | 2 years standard + 3 years after registration = 5 years |
What does it cost to run?
A consumption of 0.47 kWh per 24 hours means about 16 cents a day at 35 ct/kWh (German electricity price), or around €60 a year in continuous operation.
Calculation basis: 35 ct/kWh (German electricity price, 2026, rounded). Values from the manufacturer data sheet; actual costs depend on use and tariff.
Build quality & everyday use
What carries the Dometic CFX3 35 in everyday use: premium compressor (Secop BD35, the most reliable oscillating compressor on the market) and app control (Dometic app via Wi-Fi + Bluetooth: temperature, modes, logging). We have to be honest about the weaknesses: premium price, €649 to €899 (3× more expensive than the Alpicool CX40).
If you set the device up to save space, allow ventilation clearance of at least 5 cm at the sides and 10 cm at the rear, otherwise the compressor may overheat.
Who is the Dometic CFX3 35 suited to? (buying advice)
Perfect for:
- ✓Full-time van lifers and motorhome owners
- ✓Boat owners with a self-sufficient setup
- ✓Outdoor professionals with frequent use
- ✓Buyers with long-term expectations (10+ years)
- ✓Smart home fans (app control)
Less suitable for:
- ✕Weekend campers on a small budget (an Alpicool is enough)
- ✕Buyers without €600+ of room in the budget
- ✕Owners of small cars (too big)
Dometic CFX3 35 compared with alternatives
Head-to-head with the top alternatives from our compressor cool box comparison
| Feature | Dometic CFX3 35 | Alpicool CX40 | Mobicool MCF40 | BougeRV CRPRO 20 |
|---|---|---|---|---|
| Volume | 36 L | 40 L | 38 L | 20 L |
| Voltage | 12/24/230 V | 12/24/230 V | 12/24/230 V | 12/24/230 V |
| Temperature | −22 / +10 °C | −20 / +20 °C | −10 / +20 °C | −22 / +10 °C |
| Consumption | 0.47 kWh/day | about 0.5 kWh/day | 0.28 kWh/day | 0.86 kWh/day |
| Weight | 16.9 kg | 12.7 kg | 11.5 kg | 10.8 kg |
| Price | from €649 | from €170 | from €230 | from €180 |
Similar compressor cool box models
Frequently asked questions about the Dometic CFX3 35
Is the premium over Alpicool worth it?
How efficient is the CFX3 35 really?
What can the Dometic app do?
What warranty does Dometic give?
Does the CFX3 35 fit in every motorhome?
Can I make ice with the CFX3 35?
Verdict: is the Dometic CFX3 35 worth it?
A clear buying recommendation: if you can live with the premium price, from €649 you get mainly one thing: a premium compressor. It suits best: full-time van lifers and motorhome owners.
If you want to compare alternatives, you will find detailed data and reviews on our compressor cool boxes comparison page.
Buy now at the best price (UK) Buy now at the best price (US)