Megaflo query

keith969

Johnandabby wrote: »

Unheated garage? Then the cylinder will use more energy keeping itself hot than if it was indoors. Not a good idea IMHO to put it in an unheated space.

Sorry this is rubbish. Hot water cylinders for unvented pressurised systems are well enough insulated to be put in a garage as long as all the HW pipes are lagged. I have one in mine, next to the boiler. As others have said, you need a plumber with a p/uv certificate to do the work as its not as simple as a traditional system - there are over temperature and over pressure valves and an expansion chamber etc. to be installed and set up correctly. They typically run off a direct (limited to 3 bar) mains pressure inlet, not like your gravity fed old systems. Means nice hot upstairs showers even if you have no loft - mine runs two at the same time without the sudden going cold feeling when someone else turns on a hot tap!

I would say they are much better than traditional systems (no loft expansion tank) but they do need to be maintained carefully and this is not a job for you average diy'er.

Johnandabby

keith969 wrote: »

Sorry this is rubbish. Hot water cylinders for unvented pressurised systems are well enough insulated to be put in a garage as long as all the HW pipes are lagged. I have one in mine, next to the boiler

Not rubbish, just simple science. An unheated garage is much colder and therefore it will lose more heat - how much will depend on the insulation, but there is always some loss even with the most insulated cylinder. The OP may be happy paying the extra energy cost, but I personally don't like boiler and cylinder equipment in garages.

fred246

I have got a traditional boiler with a megaflo 210 litres. They really are a quality item that should last for years. All I do to it is re-engineer the air gap every so often. Instructions are on the side of the unit. One of the big factors you have to work out is the type of shower you have. Are you an eco-warrior miserly showerer or a jets from everywhere large rose showerer? How long do you stay in the shower? Would your 3 showers really be simultaneous? What temperature do you want the water in the megaflo. The megaflo has a good heat exchanger and replenishses quickly.There is a big debate of combi vs cylinder. Plumbers normally install combis because there is much more profit in it for them. With the price of a megaflo it becomes too expensive if the plumber wants his big profit.