Hello,I need some advise on a heating and hot water system for my house.I would like to improve the water pressure to the showers and have a cheaper to run system.It is 4 bed house with 1 family bathroom,1 en suite and 1 cloakroom.Two adults and two children live there.The water pressure is about 3 bar when measured at the outside tap.We plan to live here for the next 7 years.The current boiler is an Ideal mexico 2.I do not want a shower pump as I think it will be too noisy.This is my first post and I have read the sticky but didn't help much.Thanks in advance Pete.
Advice on new boiler change
- Thread starter gratefull1
- Start date
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Is that 3 bar static pressure or 3 bar working pressure? As you have a largeish house with four occupants I would say an unvented hot water cylinder such as an OSO Super S would be your best option (these are sometimes known as megaflo cylinders, but the generic term is unvented hot water cylinders (UVHWC), megaflo is a brand name that's become common-use, just as hoover has become the term for vacuum cleaner).
However, before going for this option you need to get your working pressure and flow rate tested. Ideally you need a 22mm incoming main, 15mm isn't really adequate in most cases. The UVHWC can be heated using your present boiler, presumably you already have a hot water cylinder and in most cases you can site the UVHWC where the current cylinder is, although you can of course move it if you wish
However, before going for this option you need to get your working pressure and flow rate tested. Ideally you need a 22mm incoming main, 15mm isn't really adequate in most cases. The UVHWC can be heated using your present boiler, presumably you already have a hot water cylinder and in most cases you can site the UVHWC where the current cylinder is, although you can of course move it if you wish
Hi,thanks for you reply.The pressure tester was fitted to the outside tap and the tap turned on,this read 3.5 bar (not sure if this is static ?).The water supply looks to be in black plastic pipe of about 25mm external diameter.As the boiler is so old and G rated i thought this would need to go to improve efficiency.Thanks for the advice on the unvented tank,Pete
You need to test your working pressure really - reconnect the tester to the outside tap then run the kitchen tap and see what it reads then. The reason for this is that it's possible to have a high static pressure but a very low working pressure, if your WP is low then there are ways around it but it would increase the cost a bit.
You could change your boiler to improve it's efficiency but if it's proving reliable it's best to keep it, it'll take a long while for a new one to pay for itself.
You could change your boiler to improve it's efficiency but if it's proving reliable it's best to keep it, it'll take a long while for a new one to pay for itself.
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Thanks for the reply's,the working pressure when tested as asked is 2.7 bar.
In answer to Bengasman my priorities are as listed:
1.Performance
2.Reliabillity/longevity
3. cost to run
4. price to change
Thanks Pete
In answer to Bengasman my priorities are as listed:
1.Performance
2.Reliabillity/longevity
3. cost to run
4. price to change
Thanks Pete
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