Air Conditioning & Parts

Generally, no additional structural support is required for standard roof-mounted models, as they’re designed to be lightweight. However, always check the weight limit of your vehicle’s roof and the max load around the opening area. For lighter vehicles or older vans, a compact unit is a safer choice.

Straight swap: Truma Aventa Comfort – fits existing rooflight space with minimal effort.

Absolutely. If you don’t have the standard 400x400mm roof opening or simply want to avoid altering your van’s roof, under-bench and split units are perfect alternatives. These options install within storage spaces or externally, maintaining a clean roofline — ideal for campervans or pop-tops.

Try this: Vechline Under Bench Aircon – fits beneath seats or storage compartments.
Or this Low profile: Mestic SPA-3000 Split Unit – indoor/outdoor design without taking up roof space.

There are three main types:
: Installed on the roof, saving interior space.
: Fitted under seating areas, ideal for preserving roof space.
: Consist of separate indoor and outdoor components, offering flexible installation options.

This depends on the internal space and insulation of your vehicle:
Mestic RTA-1700L
Truma Aventa Comfort
Dometic FreshJet FJX7 3000

Air conditioning performance is often rated in BTU (British Thermal Units). As a general rule:

Under 6m: 6,000–8,000 BTU
6–7.5m: 8,000–11,000 BTU
Over 7.5m: 11,000–13,500 BTU

Also factor in insulation, ceiling height, window area and where you travel — hotter climates demand more powerful units.
Compact cooling: Mestic RTA-1700L (6,000+ BTU)
Mid-size motorhomes: Dometic FJX4 2200 (9,000+ BTU)
Large RVs: Dometic FJX7 3000

Most AC units require a 230V hookup, and high-power models can trip breakers if not equipped with soft-start technology. Off-grid use typically requires an inverter and a powerful battery bank.

Energy-efficient & soft start: Dometic FJX4 2200
Low-draw option: Mestic RTA-1700L (1160W consumption)

Yes, most modern caravan AC units offer a reverse-cycle heat pump function — making them an all-season solution.
Dual use: Truma Aventa Comfort – heating output up to 1,700W
High output: Mestic RTA-1700L – 1,879W heat function