Unvented Indirect Cylinder Recommendations?
Discussion
Wondering if the learned folks here could help me.
Im about to update my bathroom, and first thing that needs to go is the electric shower, water tanks etc so am looking at putting in a new 'megaflow' system without the megaflow premium as the boiler in the house is still pretty new.
Ive seen the Joule Cyclone and the Gledhill Stainless Lite Plus and was wondering if people had a view on either - need a 250l unit to future proof as might look at adding an ensuite and a further bathroom down the line.
All opinions very welcomed!
Im about to update my bathroom, and first thing that needs to go is the electric shower, water tanks etc so am looking at putting in a new 'megaflow' system without the megaflow premium as the boiler in the house is still pretty new.
Ive seen the Joule Cyclone and the Gledhill Stainless Lite Plus and was wondering if people had a view on either - need a 250l unit to future proof as might look at adding an ensuite and a further bathroom down the line.
All opinions very welcomed!
Edited by Ursicles on Wednesday 5th July 16:29
We have a Telford Tempest Stainless. Quite small though, only 125 litres but we don't often run out. It's enough for 2x adult showers though (at decent pressure/flow) and of course it reheats quickly, as there's not much water in it to heat.
Had it about 9 years and had no issues at all. There does seem to be quite a lot of variation in dimensions between makes and models, some are tall and thin, and others shorter and more squat. Depending where it's going, that might be something to bear in mind.
Something else to bear in mind is that because they run at mains pressure, they can go almost anywhere. When we had an extension built,we moved our cylinder from the airing cupboard into the garage, and the boiler out there too from the coat cupboard in the hall. The meant both cupboards were suddenly much bigger, and welcome bonus was no noise at all in the house when it all fires up at 5.30am in the winter. We did put a small radiator in the airing cupboard though to keep it bone dry in there.
Had it about 9 years and had no issues at all. There does seem to be quite a lot of variation in dimensions between makes and models, some are tall and thin, and others shorter and more squat. Depending where it's going, that might be something to bear in mind.
Something else to bear in mind is that because they run at mains pressure, they can go almost anywhere. When we had an extension built,we moved our cylinder from the airing cupboard into the garage, and the boiler out there too from the coat cupboard in the hall. The meant both cupboards were suddenly much bigger, and welcome bonus was no noise at all in the house when it all fires up at 5.30am in the winter. We did put a small radiator in the airing cupboard though to keep it bone dry in there.
We have a vailant 210 ltr which I bought when I was fitting the heating system as I wanted it to match the boiler and low loss header (also vailant). Just the OCD in me but like others have said, there is not much difference between the brands other than the standing losses.
Although we have quite a few bathrooms, I didn't go for a huge cylinder because the reheat is so quick. It's heated once a day and we rarely run out. Coming back from holiday is always good, when it is stone cold, turn the heating on and you can shower after about 15 mins and feel the water getting warmer.
We had an Ariston installed in our last house which is definitely the cheaper end of the market if not the cheapest. It worked absolutely fine, they are pretty simplistic.
Some have the option of hot water return for a hot water loop if required but that always seems wasteful to me. Also some have a second (and third) coil if you have a wood burner or solar hot water heating etc.
Although we have quite a few bathrooms, I didn't go for a huge cylinder because the reheat is so quick. It's heated once a day and we rarely run out. Coming back from holiday is always good, when it is stone cold, turn the heating on and you can shower after about 15 mins and feel the water getting warmer.
We had an Ariston installed in our last house which is definitely the cheaper end of the market if not the cheapest. It worked absolutely fine, they are pretty simplistic.
Some have the option of hot water return for a hot water loop if required but that always seems wasteful to me. Also some have a second (and third) coil if you have a wood burner or solar hot water heating etc.
Our plumber installed a large unvented "CenterStore" cylinder when we renovated our house, it's a own brand from plumbing merchants Wolseley, it was his choice, I'd just specified unvented and the only product I'd heard of before was Megaflo. We've had no issues at all, it's been in 8 years. If we go away for a few days, the stored water is still hot on our return. We get away with minimal water heating in the summer for 3+ showers a day, we've got our gas usage down to an efficient absolute minimum.
We removed all water storage from upstairs during a total renovation and built a dedicated utility/plant room switching to unvented, you can put the cyclinders almost anywhere.
We removed all water storage from upstairs during a total renovation and built a dedicated utility/plant room switching to unvented, you can put the cyclinders almost anywhere.
Edited by x404 on Saturday 8th July 11:51
When in the same boat, we ended up with an OSO cylinder which 3 years in I am perfectly happy with.
Didn't want a Megaflow due to the, admittedly sparse, stories of the sliding separator breaking up within the tank.
Pros and cons to both, but as said, one of the main variables in the standing loss, and reheat time, but these days most are fine.
I wanted an OSO Deltacoil as it has lower losses and separate expansion vessel, but it wasn't in stock/available so ended up with a Supercoil.
Part of me does wonder if the Delta is better because the losses exclude that from the expansion vessel!? I've stuck a few large thick baths mat over the top cover to keep a bit of heat in, and as somewhere to store them! You could also almost certainly retro fit 3rd party expansion tanks to the Supercoil when they need replacing.
The other consideration is the physical size, compared to the existing cupboard, which ruled out the shorter fatter (and lower standing loss) Bosch Worcester units.
Didn't want a Megaflow due to the, admittedly sparse, stories of the sliding separator breaking up within the tank.
Pros and cons to both, but as said, one of the main variables in the standing loss, and reheat time, but these days most are fine.
I wanted an OSO Deltacoil as it has lower losses and separate expansion vessel, but it wasn't in stock/available so ended up with a Supercoil.
Part of me does wonder if the Delta is better because the losses exclude that from the expansion vessel!? I've stuck a few large thick baths mat over the top cover to keep a bit of heat in, and as somewhere to store them! You could also almost certainly retro fit 3rd party expansion tanks to the Supercoil when they need replacing.
The other consideration is the physical size, compared to the existing cupboard, which ruled out the shorter fatter (and lower standing loss) Bosch Worcester units.
bigdom said:
I have a Gledhill, believe it's 300L. Been in about 5 years now, I'm not sure there's much to go wrong with them, as the pressure unit is separate.
I've also got a Gledhill Stainless Lite .. It's very narrow and very tall because it's in a narrow cupboard.. Alongside my network comms room kit 
...More like a space rocket 
Edited by glow worm on Monday 10th July 14:32
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