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Boilers & Hot Water Tanks

556 topics in this forum

  1. What size boiler do I need !?

    By WillM,
    • 23 replies
    • 1.6k views

  2. Vaillant VR33 Module for OpenTherm Support

    By Rehan Saeed,
    • 2 replies
    • 6.1k views

  3. UVC in basement plant room but no drainage for overflow 1 2 3

    By Thorfun,
    • 56 replies
    • 3.1k views

  4. How to find modulation ratios?

    By jayc89,
    • 9 replies
    • 1.1k views

  5. UFH with 3 manifolds cools hw cylinder

    By rk05,
    • 18 replies
    • 1.3k views

  6. 3 port motorised valve should move 90 degrees or 180 degrees?

    By me123,
    • 4 replies
    • 895 views

  7. Buffer tank required?

    By DCG,
    • 3 replies
    • 706 views

  8. combi boiler recommendations for 30c flow rate and 3500watt heating load

    By gravelrash,
    • 17 replies
    • 1.3k views

  9. Tesla “smart” immersion heater 1 2

    By Gav_P,
    • 42 replies
    • 5.7k views

  10. Air source problems

    By tommy12398,
    • 1 reply
    • 463 views

  11. Combi boiler and unvented HW Cylinder

    By Edward,
    • 9 replies
    • 2.1k views

  12. Cold Temperatures Before Central Heating

    By MortarThePoint,
    • 2 replies
    • 482 views

  13. Wiring in a Honeywell L641B Pipe stat

    By Steve1309,
    • 3 replies
    • 1.3k views

  14. Boiler Condensing Y/N?

    By Fly100,
    • 6 replies
    • 1.2k views

  15. Boiler broken, new build around the corner. What to do?

    By Goodremy,
    • 17 replies
    • 1.3k views

  16. Can someone check this wiring arrangment

    By magunn,
    • 0 replies
    • 473 views

  17. Boiler seems to be ignoring controller

    By magunn,
    • 4 replies
    • 827 views

  18. Heating System Critique

    By tuftythesquirrel,
    • 5 replies
    • 698 views

  19. Does this just pull out from under the boiler?

    By Radian,
    • 2 replies
    • 512 views

  20. Slow pressure loss in new boiler

    By Adsibob,
    • 13 replies
    • 1.4k views

  21. Digital thermostat for UVC

    By Adsibob,
    • 11 replies
    • 887 views

  22. LLH/Small Buffer - Pumping direction

    By ian192744,
    • 6 replies
    • 1.4k views

  23. Combining Seperate ASHP and Oil Boiler

    By ChrisDL,
    • 3 replies
    • 655 views

  24. Hot Water Cylinder Discharge On Soil Stack (Passive House)

    By tuftythesquirrel,
    • 18 replies
    • 4k views

  25. Plumbing UVC with Condensing Boiler, How to.... 1 2

    By Gone West,
    • 26 replies
    • 1.6k views
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