I have a Dometic B2200 air conditioning unit on the top of my motorhome. Although everything seems to work, lights, fans, compressor etc. it refuses to pump out cold air anymore. Dometic seem to think that it needs regassing but are being far from helpful answering direct questions. So, anyone out there think they can help??? Question 1. Can the unit be regassed? Question 2. How long does the procedure take? Question 3. Who (names please) can do this? I have seen one Dometic engineer who said (after 5 mins on the roof) that the compressor needed replacing (£800+). I spoke with Dometic who said that it was extremely unusual for a compressor to fail and they doubted the diagnosis. So I am stuck in the middle. Any help would be greatly appreciated.