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unvented

A gas heater is a space heater used to heat a room or outdoor area by burning natural gas, liquefied petroleum gas, propane or butane.
Indoor household gas heaters can be broadly categorized in one of two ways: flued or non-flued, or vented and unvented.

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  1. M

    Unvented under sink heater

    Anyone seen a valve for a small undersink unvented cylinder that incorporats the pressure relief and expansion that goes out though the hot tap. I will try take a picture tomorrow. Thanks 1579473384
    • Matt0029
    • Thread
    • america heater sink under unvented usa
    • Replies: 2
    • Forum: USA
  2. C

    Recommendations for unvented 300L cylinder?

    Situation House has oil fired boiler. Plan to fit a 300L vertical hot water cylinder to replace current standard vented cylinder. Please assume that current boiler is suitable to supply heat to the cylinder. One plumber has said it is, will take advice from others. Intend to fit a twin coil...
    • Colink
    • Thread
    • america cylinder unvented usa
    • Replies: 14
    • Forum: USA
  3. C

    Companies who descale and flush an unvented water system wanted

    Need help? So just been told by my plumber that it looks like my unvented got water tank, Santon 300 litres is lime scaled up causing the pressure to be getting lower on the hot water. Are there any plumbers or companies out there that can do a descale and flush through or otherwise I need...
  4. M

    Advice on Unvented Cyclinder not enough for 2 showers

    Hi, I have a Bosch unvented cyclinder (fitted last year) and it works great but only has enough pressure to run one good shower at a time. The shower pressure also drops when the toilet is flushed. We have good water pressure to our house and i believe the cylinder PRV has been set to around 3...
    • marc1977
    • Thread
    • advice america cyclinder enough showers unvented usa
    • Replies: 5
    • Forum: USA
  5. P

    New unvented system - ground floor losing pressure

    Hi there, wondering if anyone has any pointers, in the middle of a stressful refurbishment that was meant to finish a week ago! I am completely in the dark about boilers, but we agreed to the recommendation of a new pressurised unvented system that would feed direct off the mains (Vaillant...
  6. K

    Not happy with with new unvented system, although it works fine. Shower pressure issue

    Old setup. Vented system - indirect x2 Cold water tank in the loft. x2 80L Hot water tanks, regular boiler and stuart turner 4bar twin shower pump for the master bedroom shower. Worked pretty good, although the tanks were manky and old. The shower though was epic and used to blast water out...
    • kash
    • Thread
    • although america happy issue new pressure shower shower pressure system unvented usa works
    • Replies: 94
    • Forum: USA
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