Boilers & Hot Water Tanks

497 topics in this forum

1. heat geek doesnt work in NI, could I send plans, pics etc to somewhere to get it designed so my plumber could fit it right?

   By CalvinHobbes, April 10
   • 3 replies
   • 233 views
   • 
   • JamesPa
   • April 11

2. Boiler control using the Drayton Wiser and opentherm. 1 2

   By chris_x, January 19, 2023
   • 26 replies
   • 2.8k views
   • 
   • MrPotts
   • April 7

3. Questions/Issues with new UVC System 1 2

   By Spinny, February 23   

   • uvc
   • mlcp
   • (and 2 more)

     Tagged with:

     • uvc
     • mlcp
     • tun dish
     • flow rate
   • 30 replies
   • 1.1k views
   • 
   • JohnMo
   • April 6

4. boiler behaviour,please let me know your thoughts. 1 2 3 4

   By Post and beam, March 19
   • 83 replies
   • 2.6k views
   • 
   • marshian
   • April 6

5. SunAmp PVs going spare / scrap

   By TerryE, March 16
   • 15 replies
   • 676 views
   • 
   • TerryE
   • April 3

6. Oil Boiler Locking Out 1 2 3 4 5

   By Onoff, November 22, 2020
   • 103 replies
   • 14k views
   • 
   • Onoff
   • March 30

7. Help electric boiler for UFH

   By Alexphd1, March 21
   • 13 replies
   • 482 views
   • 
   • Nickfromwales
   • March 22

8. How to certify unvented cylinder if plumber lacks G3 ?

   By Spinny, March 20
   • 22 replies
   • 614 views
   • 
   • JohnMo
   • March 22

9. Crusty Combi Boiler Dripping

   By Krikey, March 16
   • 0 replies
   • 157 views
   • 
   • Krikey
   • March 16

10. best UVC/diverter set-up to maximise PV use 1 2

    By Tom, March 13
    • 30 replies
    • 773 views
    • 
    • Dave Jones
    • March 15

11. UVC Retrofit: Tundish D2 Discharge Pipe in a Passive House

    By TerryE, March 4
    • 14 replies
    • 756 views
    • 
    • TerryE
    • March 15

12. Redring 5L SB5S SensaBoil - no water flow

    By geo3geo, March 10
    • 2 replies
    • 205 views
    • 
    • geo3geo
    • March 10

13. Unvented HW Cylinders with internal expansion

    By John Carroll, March 9
    • 4 replies
    • 284 views
    • 
    • John Carroll
    • March 10

14. Gas boiler with heat pump cylinder

    By j_s, March 9
    • 3 replies
    • 334 views
    • 
    • JohnMo
    • March 9

15. What boiler should I use for my house: Sytem Boiler or Combi Boiler?

    By ZenMad, March 9
    • 9 replies
    • 399 views
    • 
    • TonyT
    • March 9

16. Old Glowworm combi boiler broken.

    By dnb, February 25
    • 5 replies
    • 367 views
    • 
    • dnb
    • March 6

17. How to measure the remaining HW in an unvented cylinder 1 2 3 4 8

    By Adsibob, January 26
    • 196 replies
    • 6.8k views
    • 
    • Lofty718
    • March 2

18. Must I site my boiler in the same room as the unvented HWC?

    By nikbower, February 28
    • 4 replies
    • 340 views
    • 
    • nikbower
    • February 29

19. Managing solar diverter hot water

    By Linto, February 23
    • 5 replies
    • 352 views
    • 
    • Linto
    • February 23

20. combined heat pump/UVC for DHW and UFH

    By Tom, October 26, 2022
    • 7 replies
    • 845 views
    • 
    • Tom
    • February 23

21. What size Hot Water Cylinder for family of 5?

    By Meabh, February 21
    • 19 replies
    • 835 views
    • 
    • JohnMo
    • February 23

22. Heat loss over time (Vented Cylinder) 1 2

    By marshian, January 25
    • 28 replies
    • 1.1k views
    • 
    • John Carroll
    • February 20

23. Cotherm GTLH 3161 cylinder Stat

    By John Carroll, February 20
    • 0 replies
    • 208 views
    • 
    • John Carroll
    • February 20

24. Max flow velocity in 15mm pipe?

    By sharpener, February 15
    • 13 replies
    • 642 views
    • 
    • JohnMo
    • February 19

25. Oil boiler only runs for 15 mins at a time

    By sharpener, February 12
    • 8 replies
    • 483 views
    • 
    • sharpener
    • February 14