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I just phone ACV and got some prices. About £2500 for the 25c and about £3500 for the 25tc. The 25c includes the safety kit for DWH, but it is extra on the 25tc. 25TC condenses 100% of the time for DHW, but the 25c only condenses for heating. (25TC has a preheater for the incoming...

I wish I know the peak DHW demand! There will be 5 rooms each with its own shower and 1 person living in each room. Clearly it is very unlikely that all 5 showers will be in use at the same time. It is also very likely that there will be times when more than 2 showers are in use, so a...

I am thinking about a heating/dhw system for a HMO that will have many showers so need good hot water flow rates. As the tenants may wish to have different room temperatures, at times the heat load could be very low. As I understand it, the ACV Heatmaster condenses very well while producing...

I am looking at a property I may wish to buy, to use as a HMO. As it is 3 stories fire proofing becomes a very important issue. Due to the odd layout, there is a lot of space under the stairs to put a boiler, hot water tank and an airing cupboard, as I understand it this is allowed provided...

I just read on another thread “'Cooker switches' are not actually mandatory”, I had always thought they were. However for some reason if you have a gas hob you don’t seem to have to be able to turn off the gas to the hob from anywhere apart from the gas meter. What about switches for...

Thanks, I don’t wish to have to get an electrician on put in a consumer unit with one socket on each circuit close to the consumer unit, and then extend all circuits myself as it is rather keeping to the letter of the law for the sake of it! However as my local building control charges over...

How do I go about finding someone that can do the “third party certification” as defined in the new version of Part P? E.g. what body and qualification should the electrician have so I can use them instead of having to use my local council building control?

see "Where to get a pattress jig"

Our render goes over the top of our DPC. The DPC is only about 1cm above the level of the paving. So I need to lower the paving (or put in a dry zone ditch between the paving and the wall) and remove the render. However the render is very hard, so the brick gets damaged when I try to...

We have just been offered the above boiler to replace the boiler in our large 3 detached bedroom bungalow. Is this a good boiler? Is 18KW enough for a 3 detached bedroom bungalow?

It footer says it was updated in Oct 2009, I was hopeing for a upto date list.

Is there an up to date list anywhere of boiler that can have the CH water temp controlled with Opentherm?