Have to agree - yet again - with Jan. Our fridge in the camper was struggling with the heat during the past few summers. We bought an electric cool box and it really did get colder than the fridge - don't ask me why. The ice box in the fridge was just about cold enough to freeze the icecube tray over night. The cool boxes are set to cool to 18degrees below the ambient temperature. We're hoping that the fridge in the van will be colder than the one in the FC, certainly it appears to get colder on gas - but is that an illusion?
We have the standard 3 way fridge in our Pullman and find it too small to take the meat, fruit and veg and other perishables like wine and beer.
Your question prompts me to explore the purchase of an electric coolbox (it would also be usefull in the garden) as we have loads of room in the fc since I removed the wardrobe.
We use a small £19.99 Woolies special offer coolbox in our ancient FC. The advantage is it goes in the boot of the car and runs off the ciggy lighter when travelling so we can have a cold drink or a cuppa without paying motorway prices. Once sited, it runs off the EHU keeping dairy produce etc very cool. Another advantage is it also acts as a hot box for when the take away is some distance and the oh wants to stay on site.
i cant vouch for three way fridges, as ive never had the pleasure
but our campinggaz electric cool box is very good,we leave ours on all the time as the fan part is very quiet. It is usual to find a layer of ice/frost on the bottom of the box and ive even had ice crystals in the milk!
the other thing i like about this box is that it comes with a second lid,to turn it into a regular cool box so a picnic at the beach is easy
The combicool has a vent on the top, which forms a sort of chimney from the gas flame, or the electric elements. You have to be careful not to cover this as it gets quite hot, but other than that the outside remains cool. I believe that the Electrolux is similar.
We used a coolbox for years, most sites have a ice block freezing service so you can change ice blocks when needed. We moved over to a 3-way a couple of years ago and used it as our main household fridge for 6 months when we bought a new house and had no way of keeping the milk fresh until the new kitchen was fitted.
A friend I camp with has a coolbox and I still have a 3 way Campingaz fridge bought over 8 years ago. For me the fridge wins hands down, it is completely silent, has a thermostat, I can make ice cubes though not a lot and I can use it on sites where there is no e/h, on max power it gets through a 907 gaz bottle in about 10 days. I never bothered running it on the car 12v electrics, just chilled it down in the house before loading it and chucking it in the tailgate just before leaving.
Question from Steve H on using gas, there is a small amount of heat coming up from the vent, no more than on electric, just ensure theat there is free space round the back of the fridge and the vent is clear.
The 3 way fridge gets my vote every time ! Just bought one and used it last week. The time before we used a cooler box. Had no hook up and it drained our power pack in1 1/2 days. eeeww, smelly cheese and warm milk ! The three way gives you the option of hook-up, battery or gas. So it doesnt matter if there are no hookups available, you will still have ice cold beer and wine and sweet smelling milk ! Money well spent !!