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I wondered if it was a vent but it does not smell at all. Presumably a vent would vent bad odours?!

Removed some ivy to discover an ugly black pipe near drain manhole cover. Is it ok to cut this off and cap or cut below ground level and cap? It looks like the drain receives surface water (blue line) and is a combined sewer (red line) and a private combined sewer (brown) joins the combined...

Thanks all for your help.

This option sounds most fun!

Thank you. If I could borrow an SDS hammer drill, would drilling holes or using a chisel bit make my life easier?

I would like to breakout and dispose of half this patio, including a concrete slab and the end of my garden. Idiot steps please! Can I have an idiots guide on how to do this without needing to buy anything too expensive. Could be tempted to invest in a few tools if they will make my life...

A job for tonight!

3 port valve is Y Plan. Programmable timer is very vintage so maybe this is the problem? Going to be replaced with a Nest. Thank you everyone who has responded. I am learning so much. Forums are great.

I think the benefit of having those components covered under a 7 or 10 year warranty within the system boiler and saving a bit of space is worth going system for us.

Those are minimum values. See table attached.

True. I do not know if kW is usually quoted as heat input or heat output. The front of the boiler gets warm/hot so efficiency is not a strong point hahah.

BTW - Existing vintage boiler is 37kW

5 or 6 meters.

15 large radiators. 5 small radiators. Future extensions may add 2 large radiators. Going for a system boiler, not a combi. Gas pipe is 22mm. Installer thinks this is ok.

Age of pipework is a mixed bag. Age of radiators is old. The existing system has a separate expansion vessel and pump so is already somewhat pressurised. House is 2400sqm. Some rooms have 3m high ceilings. Walls are solid. Does 37kw still seem high?

Hello Muggles, Thank you for the response. We are not in a mansion, but an old house with solid walls, high ceilings and mostly single glazed windows!! The plumber did not do the calcs, but counted the radiators. I think we are around 30kW but have allowed a little extra as we might like to...

Hello, I am about to accept a quote for a new boiler and just need some final assurance. Current system: - V old heat only boiler with separate expansion vessel and separate pump (ground floor) - Vented hot water cylinder (first floor) fed from tank in loft. - 5 bed house, three floors with...

Thank you Gas Guru, - What unvented cylinder is the best in your opinion? - We are on the outskirts on London and I believe water pressure is ok. Most neighbours have unvented cylinders but we would still get it checked. - Does it make any difference if we were to install the cylinder in the...

We have just moved into a new house and the old boiler we adopted has kicked the bucket. At least the weather is warm. It is a heat only boiler with a vented hot water tank and cold water tank in the loft. Eventually, we would like to have a unvented (Megaflo) cylinder to provide high pressure...

Bathroom sink