Replacing boiler and vessel

Firstly if you have a cylinder (storage Vessel) then you dont have a combi you have a heat only boiler. As for the Megaflo, that is a generic name for an unvented cylinder. Yes you can have it sited in the garage and no you wont have to knock any walls down to re route pipes.

Your best bet will be to get a few plumbers in to quote for the job, they can assess much better than anyone on here can having seen the property first hand and they will offer you diferent options and tell you what can be done realistically.

Let us know how it goes and good luck

 

You will still need a source to heat up the water for your heating and hot water. A megaflow is not a boiler.

 

It can go where you can get gas to it.
Is the garage attached to the house? Obviously the further away the boiler & water store is away from where it is used (rads or water) the longer it will take to get hot water there and the more losses in heat you will have. It's not impossible when done properly.
Funnily enough a university near me is putting in a new boiler house that is about 6 miles from the uni and running hot water all the way there, you can do anything with money!

 

With careful planning, you can get away with thoughtful rerouting of pipes,& may just need drilling a few new holes for some of the pipes.
You need to think about the gas pipe current location & how to get it into the garage, also flue new position in garage

Without see the job, it's very difficult to advise, sometimes there are easy ways to over certain obstacles.

 

It might be a simple job to remove cylinder from bathroom,& join up exsisting pipework there, then cut into pipework in kitchen,or ultilty room & extend that to new cylinder in garage, thus avoiding any rerouting, holes upstairs.

 

For me the attached garage sounds the best place for Boiler and cylinder, easy access for service and any repairs.
Just remember to have the Frost stats fitted to protect the Boiler and Tank 1 x air 1 x return CH pipe and the
House one set for Frost

 

Mqi, that's the gist of it above.

We cannot tell much more from this side of the screen - that will really need a GasSafe on site.

But, as said by Dollar above, if you can move both the boiler and cylinder into the garage, you will free up house space.

Or, you can keep the boiler in the house and fit the cylinder in the garage if you prefer.

The main issue of having the cylinder in the garage - whether the boiler is next to it or not - is the length of pipe from the cylinder to your hot taps. Obviously the longer they are, the longer it'll take to get hot water oot yer tap when it's turned on. That'll add a few seconds. How many depends on the pipe run.

It isn't really an issue for the boiler to heat the water in the cylinder if they are in different rooms, 'cos heating the water store is generally a half-hour jobbie, and an extra 10 seconds on that ain't gonna make any difference.

It'll almost certainly be easier (cheaper) to keep the boiler in the house where it already is rather than to also move it to the garage, because the boiler will need a new flue installation (might be easy and cheap or could be tricky and more costly) as well as re-running the gas supply to it. It'll also need its electrics re-jigged.

So, give it some thought and then perhaps ask the GasSafes for a couple of quotes, one with the boiler to remain and t'other for it to leave.

(REMAIN! Oops - sorrry - wrong thread... )

Really, don't worry about drilling and patching up holes and stuff - there's almost bound to be some work like this needed to make good and tidy it all up afterwards. That's normal - don't fret over it.

Personally, I'd want the boiler out in the garage too, if possible and not too costly. It gets an ugly box out of the house, and also frees up space.

Oh, and when you have the old cylinder removed from the 'airing cupboard', if you still want to use that cupboard for 'airing' clothes and keeping them nicely fresh, then consider either a teeny rad in there, and even chust a meter or so of exposed copper pipe along the skirting - that'll provide enough warmth.