Three way fridges (also known as absorption or gas fridges) are the most common style of fridge found in caravans. Their clever design avoids the use of moving parts, this makes them are resistant to wear and tear and operate silently. They usually have the option of running on 12V, 230V or LPG. The gas mode allows caravan owners the freedom to camp away from powered sites without needing a large battery bank. A standard 9kg gas bottle can run most fridges for around 3 weeks. Some fridge models even have an AES (Auto Energy Select) where the fridge tries to run on the cheapest power source. It prioritises 230V power, if not available then 12V from a towing vehicle and finally by firing up the gas. If AES senses 12V or 230V later becomes available, it will turn off the gas and again run on the best source. The installation does require a bit of planning as they are generally installed against a wall with a sealed cabinet built around them. You will also need side vents fitted in the caravan wall to cool the back of the fridge compartment - which requires plenty of ventilation to perform correctly. Finally, the gas connection must be done by a registered gas fitter. We have the best 3 way brands like Dometic (previously Electrolux), Vitrifrigo and Waeco. Please contact us if you have any questions.