Unvented vs vented cylinder

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I'm with bernardgreen on this. I don't like the thought of having a pressurised system in my house

Same here. Far better flows from gravity. The new age plumbers have lost sight of the benefits of gravity.
And no pressure vessel wanting to blow joints off and flood the home.
 
Same here. Far better flows from gravity. The new age plumbers have lost sight of the benefits of gravity.
And no pressure vessel wanting to blow joints off and flood the home.
Look up a hot water only thermal store cylinder. Water stored and heated at low pressure, a high pressure coil gives instant heating to the incoming cold water. So high pressure main water pressure at the taps.
 
Its no wonder dans opinion of your advice is so low, you would actually fit a vented cylinder, plate heat exchanger, pump, flow switch, tank in loft rather than an unvented cylinder ?
Find out the difference of an unvented cylinder to a hot water only vented thermal store.
 
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Where would I find that nugget of pure gold , is it a secret like bernards source?
Just one maker. Many around.....

Thermal Stores
Thermal stores take a completely different approach to delivering hot water.

Rather than drawing from the stored hot water, the thermal store forces the mains pressure cold water through a high efficiency heat exchanger coil which draws its heat from the surrounding “Thermal Store” to heat the water for the taps.
The thermal store approach offers a number of benefits depending on the application:

  • Extremely energy efficient reducing running costs
  • Can be used with Solid Fuel
  • Can run central heating from the thermal store
  • Instant hot water and heating
  • Extremely reliable as there are fewer mechanical components
  • Easy to install
  • No annual maintenance
  • Fresh mains water at hot and cold taps
  • Zero legionella risk as no stored water is fed to taps
  • No risk of explosion
  • No large pressure relief pipe through outside wall
  • No recharging of pressure vessel
  • No complex, expensive, pressure controls
thermal-store.jpg


https://www.mcdonald-engineers.com/thermal-store-vs-unvented-cylinder
 
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