Search the Community
Showing results for tags 'combi boiler'.
Found 3 results
-
Hi Just wondering if repairs done by British Gas to my combi boiler come with a guarantee? Had it serviced under contract and some parts replaced 4 weeks ago but gradually the old problem of no hot water downstairs has returned. We were told at the time it was probably a diverter valve problem which the engineer replaced. Central heating upstairs and downstairs is fine but sink and shower hot water has recently become very slow to heat and often goes cold after a minute or two. The system pressure is down to below the safe minimum level today so we had to turn it off. I haven't noticed any leaks anywhere. A British Gas engineer is booked to come tomorrow and as there's an excess to pay on repairs with our service cover I'm wondering if it's likely that they will waive it because of the previous repairs not having been successful? All thoughts welcome. Thanks David
-
Question Do you use less gas heating cylinder to produce DHW or direct from a combi gas boiler? My thoughts are - A combi will start up quite a few times and have a short run times, worst efficiency. Filling a cylinder will be longer run time, so should be more efficient. But I am not sure, what are your thoughts?
-
I have recently moved to an old stone walled cottage that was converted to a bungalow in the 70s. It has a 4kWp PV system and a 1.4kWp ST system with an oil fired boiler for CH and DHW. There is a 230l cold water tank in the loft and a 140l vented hot water tank. I shall continue to use the oil fired boiler and would like to have mains pressure hot water. The ST system is a Genersys 1200 with DC12 controller which was installed in 2009 and seems to be working well. I am trying to decide whether to keep the ST system and use a ~250l twin coil TS such as a Grant DuoWave TS or use a twin coil UVC. I looked at the Harlequin Heatstream Plus but it only has one heating coil so would mean using the PV to heat the water with the immersion. I had a UVC system in my last house which worked well but it would require annual maintenance. The alternative would be to remove the ST and use an external oil fired combi boiler. I have discounted Sunamps etc. Any ideas would be helpful.
