I am very disappointed in the catalytic heater that I bought recently. The main problem is that it is very very difficult to light. No one at Calor was able to offer me any practical help or advice their only solution was to replace the heater but I only wanted a replacement if they could test one before delivering one to me. This appeared to be beyond their capabilities. Dealing with Calor has been a nightmare from beginning to end. It started when I placed the order on line. When I hadn't received the heater after one week I telephoned Calor to find that although the order was on their computer it had never been processed and I had to give my credit card details again. There were no instructions on how to fit the regulator with the heater and I eventually found instructions on YouTube. When I telephoned Calor to get advice on how to overcome the difficulties of lighting the heater the person who answered the phone although perfectly polite couldnt help me. He said he would investigate and call me back. Of course he didn't phone back so yet again I phoned Calor the next day to be told that they had the wrong phone number for me. The impression given is that the staff at Calor are a bunch of incompetents. The situation now is that I have a heater that I can light sometimes but not necessarily when I want to use it. I very much doubt that I would ever buy from Calor again.