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Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws
Thanks gmartine.Cold water storage, boiler feed and return tanks in the attic will be made redundant.
I have two modern button press type cistern/flush (dual button, one for water saving) which was installed when I changed the toilets in 2015 or so. However, one in the ensuite is still the old handle flush type. Would the cold water pipes feeding the cistern have to change too? I thought it's just the cold water pipes feeding the boiler that would be new, not the output from the boiler (heating or hot water). If not, then the whole pipework for the hot water taps need to be changed?As long as they're not too ancient the cisterns should cope with being presurised.
So, would the cistern/flush still work or would they stop getting filled until they are changed ?RE: Cold water
You can keep the CWST if you wish, I wouldn't for the sake of upgrading a cistern/flush or two if that's even necessary. Supply pipes to them or outlets don't need to be changed.
Ah, great. Re the old cisterns/flush, would they carry on working (albeit slowly/partially) or would they stop completely forcing me to change them immediately ?Everything upstairs fed by CWST can be fed by a mains supply, you can basically replace one feed with the other without having to replace any actual pipework.
The pipework around the cylinder and header tanks will need to be redirected but apart from that pretty straight forward job.What pipework changes are needed to replace a conventional open vented gravity boiler to a combi boiler ? Would toilet flush/cisterns need replacing ?
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