Air Source Heat Pumps (ASHP)

1245 topics in this forum

1. Heat Pump Running Cost Poor Reporting And Misinformation

   By PhilT, 21 hours ago
   • 12 replies
   • 224 views
   • 
   • marshian
   • 8 hours ago

2. Fan Coil Units for use with a (cooling) ASHP 1 2 3 4 14

   By ProDave, July 24, 2019
   • 336 replies
   • 81.4k views
   • 
   • Michael_S
   • Sunday at 17:28

3. Cooling mode, but

   By Post and beam, June 23
   • 9 replies
   • 277 views
   • 
   • JohnMo
   • June 23

4. DHW safety valve?

   By Duncan62, June 18
   • 17 replies
   • 446 views
   • 
   • Nickfromwales
   • June 22

5. F gas A2A and A2W 1 2

   By Oz07, June 16
   • 33 replies
   • 832 views
   • 
   • Nickfromwales
   • June 21

6. Heat pump fill & flush outside

   By LaChab, June 16
   • 2 replies
   • 214 views
   • 
   • LaChab
   • June 16

7. Weather Comp + independent zone valve 1 2

   By Mr Blobby, May 19
   • 45 replies
   • 1.6k views
   • 
   • SimonD
   • June 10

8. BUS increase to 9k for off grid properties. Does anybody know if self build properties are eligable.

   By jimseng, June 6
   • 1 reply
   • 304 views
   • 
   • JohnMo
   • June 6

9. running cooling mode? noises

   By Post and beam, May 28
   • 7 replies
   • 498 views
   • 
   • Post and beam
   • June 1

10. vaillant cooling mode plug specification.

    By Post and beam, May 24
    • 3 replies
    • 391 views
    • 
    • Post and beam
    • May 26

11. LG Therma V set up quirks and info

    By Dillsue, September 23, 2025
    • 20 replies
    • 1.9k views
    • 
    • Dillsue
    • May 25

12. How to unlock cool mode on Panasonic heat pump

    By Ajm, May 23
    • 2 replies
    • 614 views
    • 
    • JohnMo
    • May 23

13. Panasonic ASHP doesn't vibrate!

    By Mr Blobby, May 14
    • 10 replies
    • 618 views
    • 
    • Dave Jones
    • May 21

14. Descaling ASHP heat exchanger

    By joth, May 10
    • 6 replies
    • 523 views
    • 
    • JohnMo
    • May 19

15. OpenHeatLoss - Free and Open source heat loss, system and pipe sizing tool, primarily for heat pump system design 1 2 3

    By SimonD, April 12
    • 59 replies
    • 3.2k views
    • 
    • SimonD
    • May 16

16. Anyone got BUS grant with no emitters upstairs

    By Smallholdertoo, May 15
    • 5 replies
    • 462 views
    • 
    • Bornagain
    • May 16

17. Haier R290 Monobloc 1 2 3

    By JohnMo, January 16   

    • ashp
    • 72 replies
    • 5.5k views
    • 
    • JohnMo
    • May 14

18. Ecodan SIKA Flow sensor failure

    By joth, August 16, 2024
    • 18 replies
    • 5.7k views
    • 
    • joth
    • May 11

19. Ashp, ufh and fancoils. Help!

    By lizzieuk1, April 21
    • 22 replies
    • 1.2k views
    • 
    • Nickfromwales
    • May 6

20. Veissmann ASHP buffer required for cooling use??

    By MrWhat, April 29
    • 12 replies
    • 654 views
    • 
    • IGP
    • May 1

21. Umbrella Route to Bus Grant?

    By Michael_S, April 22
    • 3 replies
    • 573 views
    • 
    • Dillsue
    • May 1

22. ASHP schematic - Noddy question - CCT

    By crispy_wafer, April 27
    • 13 replies
    • 660 views
    • 
    • mistake_not
    • April 27

23. Vaillant ashp (my battle with). 1 2 3 4 23

    By zoothorn, August 27, 2023
    • 560 replies
    • 48.6k views
    • 
    • Dillsue
    • April 26

24. Nusku heat pumps - a less disruptive replacement for a combi-boiler.

    By LnP, April 25
    • 16 replies
    • 821 views
    • 
    • JohnMo
    • April 26

25. Prepping for ASHP and sizing - Heat loss calcs confusion 1 2 3

    By mistake_not, April 20
    • 62 replies
    • 3.1k views
    • 
    • JohnMo
    • April 23