In 2010 we moved into Foxdenton Hall farm and decided to do a refurb on the house and heating system. At tghe time we had an oil fired heating system that was using 4 tanks of fuel a year at just over £1000.00 per tank. We used cellotex insulation on the house and installed a Danfoss single phase heat pump. This has worked really well since we moved in until the night before Christmas eve 2013 when the slow start burst into flames and triped out the electrics. In all fairness to Danfoss I rang them at 9.30 Christmas eve and the manager told me he finished at 12.30 and would drop it off on the way home and he did. I swaped the unit (Very simple) and off it went again. Disapointed that it had broken down but well impressed with the service we continued. At the end of January 2014 the heat pump stoped again leaving us with no heat. It does have an electric heater backup but this is barley enough to warm the hot water and has no effect on the heating system. Trying to get a service engineer to look at this is something of a nightmare and I ended up with an air conditioning service engineer who had never seen one before but had a go. He thinks that the compressor has gone and quoted me £1500 to replace it. Everyone tells me that the compresors should last for 20 years so I think my next call is Danfoss to see what they suggest. From a system that has worked so well I really disapointed that it should break down twice in as many months.