Why a Combi Air Conditioner Heater is Worth the Investment
Discover why a combi air conditioner heater is the ultimate year-round comfort upgrade for caravans and motorhomes. Efficient, compact, and built for all-season touring.
What’s the difference between a combi air conditioner and a standard air con unit?
A combi unit provides both cooling and heating, whereas standard air conditioners only cool. Combi models save space and offer better year-round value for touring.
Can a combi system really heat my caravan in winter?
Yes! Modern combi units, such as the Truma Aventa Comfort and Mestic RTA range, include built-in heat-pump technology that provides steady warmth even when outside temperatures drop to around 4 °C. They’re ideal for all-season touring in the UK and across Europe.
Are combi air conditioners expensive to run?
Not at all. Because they transfer heat rather than generate it, combi air conditioners use less electricity than electric or fan heaters. They’re among the most energy-efficient ways to heat a caravan, especially on sites with mains hook-up.
Can I use my combi air conditioner when camping off-grid?
Yes, but you’ll need a suitable power source such as a generator or inverter system. For best performance, check the wattage of your chosen model and ensure your power setup can support it.
What size combi unit do I need for my caravan or motorhome?
Match the unit to your vehicle’s size and insulation.
- Mestic RTA-2500L: ideal for caravans up to 8 m.
- Mestic RTA-2600 or Truma Aventa Comfort: suited to larger motorhomes or well-insulated vehicles.
Do combi air conditioners dehumidify as well?
Yes. All dual-use systems remove moisture from the air while operating, helping prevent condensation and keeping your interior fresh and dry — a major bonus during winter touring.
Can I run it overnight?
Yes — combi systems are designed for quiet, continuous operation. Their thermostats automatically adjust to maintain your chosen temperature safely throughout the night.
Can I run my combi air conditioner from solar power or a leisure battery?
Some lower-draw models can run through an inverter system linked to solar, but most require 230 V mains power for full heating or cooling output.
How energy-efficient are combi air conditioners compared to separate units?
Combi units use heat-pump technology, offering higher energy efficiency than resistive heaters and typically lower running costs than operating two separate systems.
