How Combi Boilers Work - Plumbing Tips

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[SapphireKnightofWhiteLotusCity]

The first video I saw where I actually understood... Thanks mate...

[AliciaSykes]

Really helpful video! I've always been worried that my hot tap water wasn't "clean", as I know radiator water is recycled and can get quite grimy.
But your video, showing that they're two separate systems which don't mix, transferring heat through a heat sync, has put my mind to ease - thank you!

[ElBee]

Fantastic walkthrough. With it getting very cold in the UK at the moment, I did wonder how the combi worked!

[justmakingcomments]

Great video, very good that you mentioned the heat store that most gas boilers wouldn't have unless they are some sort of hybrid type a bit like the Worcester Highflow!

[kevinski]

We do live in a hard water area.I will look into it.Thanks very much.

[jellyboy]

just had a Worcester Bosch Combi installed come to this video to know how it all works its amazing coming from a old fashion tank boilers

[grahamhamley]

Excellent explanation of the pressure paddle

[ninjapixiequeen]

if you have a 4 bed house operating as a household a combi boiler would not be the best choice, as the water is heating through a heat exchanger as opposed to being heated in a tank it is best for smaller properties, they are cheap and easy to install but you're better off with a higher capacity in a larger home. i'm in training at the mo but i recently did a theory exam on hot water systems and this was our instruction. hope that helps

[glennproctor]

Very useful video, I've had combi boilers for years but only now understand how they work!

[jonanthony]

Very useful and well explained. So far I have had only systems which required loft header tanks and have always had water softners. We are now moving to a new home which has a combi-boiler. Can we have a water softner or will it damage the heat exchanger?

[tommurphy]

Hi pal. Very well explained. Tell me do I still need to keep my copper cyclinder

[palanivisu]

This was brilliant outline of how heat exchange works and idea of how combi boilers works, many thanks for this video

[markbusby]

Hi plumberparts, thanks for the very usefull videos, great help, I live in the UK just finishing my house refurb, nearing the installation of a new boiler, I live in a bungalow with converted loft space (two rooms) so no room for tank, Im faced with the decision of a combi boiler or un vented system, my brief research so far, and one very expensive quote for the unvented boiler system are very expensive, compared to the simpler combi system, I realise that there is no "stored hot water in the combi" just turn and go!.... So my question is what is the benefit of choosing unvented over combi, or visa vera, cheers Mark

[adriano]

This is a very good and simple explanation!

[jessestrum]

hi the hot water supply to the taps, does it also supply a mixer on the shower, cheers love your videos

[Jay-cxer]

Thanks this really helps with my training. Great explanation 😊

[dharmadoc]

Great video! 👍 I have a dumb question... With a combi-boiler, do I need to turn on the house heating to heat up the water for a shower?

[magna]

Keep up the good work . Knowledge is power yell out the safety issues please, for those who think they can take the lid of a combi & be there are potential problems lurking !

[darrenfreeman]

great video, i found the hanging rad video helpful cuz i installed 3 yesterday and used your method, all level. i would like to see a video on tap maintenance, from changing washers to why jumpers come liise and get stuck etc :)

[pauluk]

brilliant idea having the boiler outside