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What is the best HW cylinder available please. I am looking at unvented and could do with one that is able to reheat quickly. Jon :lol:

What is the difference between PHD smoke detectors and 'rate of rise ' smoke detectors?

Thanks guys, seen these Hepvo valves installed before on cyls but wasn't sure whether it could be used on the boiler sdp

Thanks, As long as there is a slight drop, it can run within the screed? Will it need to be protected i.e. kuterlex?

I'm having a new boiler installed in a house thats currently being renovated. The boiler is in the middle of the propert and I am aware the safety discharge for the heating will have to be run to somewhere suitable. My question is whether this can be run in the floor around 5-6m to the...

Just doing some work on renovating my house, the red 32mm duct for the new incoming electric is rising up through the slab, however the meter will be in the adjacent room (only about 1m away). Will United Utilities normally allow the cable to run from the duct entry position through an internal...

To accurately size a rad. you need to take into account, 'U' values i.e. building construction, glazing area/type, floor area, ceiling/roof area length of outside wall, no. of air changes, internal external temperature, flow and return temps, delta T factors... so on and so on. Just get one...

I have been speaking to a friend today who has one fitted to his system (this comprises of 2 no. 50kW Wolf boilers), which is quite a bit larger than the proposed 65kW boiler to my new system, so I think I shall leave it out, or at least fit an indicator that comes on when pressure is low as...

Yea, I will look into this and keep you posted. It does say 'non-house' and also systems over 45kW (which it will be), looking at a 65kW boiler. Have you seen them on larger systems before anywhere?

There are a few manufacturers that do these units. A couple here: http://www.arrowvalves.co.uk/productdetail.php?id=2 http://www.mikrofill.com/products_efd.php I understand they are not normally fitted on normal domestic systems, but this is a very large house and I have seen them...

I have heard of the T5 low energy strip lights. Are there any comparible compact flourescents that are low energy too? Are the T5's stip lights only?

I am currently helping with renovating my house, big job. One of the big jobs is the new plumbing and heating system, lots of bathrooms etc.. This question relates to the pressurised hot water system. I know from my previous house how a pressurised system works for both hot water and heating...

I see now... thanks.

What is the mechanics of how it works, I assume there is a valve which divert it to the cylinder, but im not sure. Is it generally used for jobs with high HW demand.

What is ‘hot water priority’ and is what type of job is it normally used on? Is it relatively simple to add this ‘feature’ to the system? Thanks

You should be able to drain the CH then cap it off whilst you use HW. No problem

I don't think 22kW is too far off, Agile; there is no 'normal' heat-losses from a 3-bed house, they come in all different shapes and sizes, with good or bad insulation properties. Some of the larger living rooms in house like this i.e. 1930's semi's, need 3-4kW at -3degC and 21degC internal so...