DOMETIC New‑for‑Old Fridge Guide
Dometic New for Old Fridge Guide
Replacing an older caravan or motorhome fridge can feel overwhelming — model numbers change, dimensions vary, and ventilation requirements differ between generations. This guide helps you identify the correct new Dometic fridge to replace your older absorption or compressor model, using verified data from Dometic’s official swap‑guide resources.
How the Dometic New‑for‑Old System Works
Dometic’s “New for Old – Simply Swap” programme allows you to replace discontinued or ageing fridges with the purchase of a modern Series 10 or NRX model. The guide compares older absorption units with their closest modern equivalents, helping you match:
Dimensions (W × H × D)
Technology type (Absorption or Compressor)
Ventilation requirements
Volume/capacity
Installation constraints
This ensures the new fridge fits your existing cabinetry with minimal modification.
Key Criteria When Choosing a Replacement
1. Ventilation Clearance
Dometic specifies that modern fridges require 15–25 mm clearance between the fridge and the vehicle wall, in addition to the depth dimension. Ventilation grille positions may differ from older models.
2. Height Compensation
If the new fridge is shorter than the old one, height can be corrected using adjustable feet. If replacing a Thetford model, it requires 12 mm minimum floor clearance if feet are not used.
3. Absorption vs Compressor
Absorption fridges: silent, run on 12V/230V/Gas
Compressor fridges: run on 12V or 12/24V and solar, faster cooling, better performance in hot climates
The Dometic guide lists direct replacements for both types.
Common Replacement Paths
Below are examples from the official Dometic charts (summarised):
Absorption Models
Older models such as RM300, RM301, RM4290L, RM4300, RM6291, RM7290L, RM850x and the 3, 4, 5, 6, 7, 8 series fridges have modern equivalents in the Series 10 range. Typical dimensions: 523 × 821 × 548 mm (+15–25 mm clearance). Volume: 76–90 L depending on model.
Compressor Models
Compressor replacements are listed separately in the guide, helping you match depth and ventilation requirements for modern high‑performance units.
Why Use Cooltech Leisure for Your Replacement?
We supply the full Dometic fridge range
Expert guidance on direct replacements
Offer Installation manuals to support with ventilation, fitting, and installation
UK‑based customer service
Competitive pricing
Need Help Identifying Your Old Model?
If you’re unsure which fridge you currently have, we can identify it from:
A photo of the data plate
The model number
Cabinet cut‑out dimensions
We’ll then match it to the correct modern Dometic replacement. It is always advisable to read the installation instructions of the desired appliance before replacing a refrigerator to ensure it fully meets your needs.
Download the Official Dometic Swap Guide
The Dometic New-for-Old Replacement Fridge Guide PDF can be viewed here including all absorption and compressor replacement charts.