Air Source Heat Pumps (ASHP)

1250 topics in this forum

1. Umbrella Route to Bus Grant?

   By Michael_S, April 22
   • 3 replies
   • 1.2k views
   • 
   • Dillsue
   • May 1

2. ASHP schematic - Noddy question - CCT

   By crispy_wafer, April 27
   • 13 replies
   • 1.2k views
   • 
   • mistake_not
   • April 27

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

   By zoothorn, August 27, 2023
   • 560 replies
   • 56.2k views
   • 
   • Dillsue
   • April 26

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

   By LnP, April 25
   • 16 replies
   • 1.5k views
   • 
   • JohnMo
   • April 26

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

   By mistake_not, April 20
   • 62 replies
   • 5.1k views
   • 
   • JohnMo
   • April 23

6. Quote for 7kw Vaillant - surely not enough? 1 2

   By Michael_S, April 15
   • 26 replies
   • 1.6k views
   • 
   • markc
   • April 20

7. ASHP - Weather Compensation AND Zoning?

   By SBMS, April 3, 2025
   • 10 replies
   • 2.3k views
   • 
   • DamonHD
   • April 16

8. Ducted AC - quick duct size calculator?

   By Alan Ambrose, April 11
   • 3 replies
   • 581 views
   • 
   • Nickfromwales
   • April 11

9. What do you think of the aira heat pump and the way of paying for it?

   By CalvinHobbes, March 13, 2024
   • 7 replies
   • 5.2k views
   • 
   • Rishard
   • March 30

10. Evan Davis's Heat Pump in the Home

    By SteamyTea, March 12
    • 1 reply
    • 774 views
    • 
    • SteamyTea
    • March 19

11. Which ASHP are set up to cool 1 2 3 4 13

    By Triassic, July 15, 2018
    • 310 replies
    • 90.2k views
    • 
    • JohnMo
    • March 19

12. Siting an ASHP when no wall space available?

    By Steve1309, March 15
    • 11 replies
    • 924 views
    • 
    • JohnMo
    • March 16

13. ASHP outdoor unit heating pump Q 1 2

    By BotusBuild, March 6   

    • vaillant
    • arotherm plus
    • (and 1 more)

      Tagged with:

      • vaillant
      • arotherm plus
      • vwl 75/6
    • 35 replies
    • 2.3k views
    • 
    • BotusBuild
    • March 10

14. Interesting couple of days with the new heat pump. 1 2

    By MikeSharp01, February 3
    • 49 replies
    • 4.2k views
    • 
    • Wil
    • February 25

15. ASHP BUS Grant - when does it pay out?

    By Great_scot_selfbuild, February 16
    • 8 replies
    • 1k views
    • 
    • Post and beam
    • February 20

16. Panasonic Aquarea L series cooling

    By Benpointer, February 17
    • 4 replies
    • 709 views
    • 
    • Benpointer
    • February 18

17. Why did you choose an air source heat pump? 1 2

    By SimonD, February 15
    • 32 replies
    • 2.3k views
    • 
    • BotusBuild
    • February 17

18. Whole house ASHP system design

    By flanagaj, February 15
    • 6 replies
    • 909 views
    • 
    • flanagaj
    • February 16

19. ASHP: monobloc, split or combi? 1 2

    By AndySat, January 20, 2025
    • 44 replies
    • 6.5k views
    • 
    • Wil
    • February 9

20. Any reasons not to go with a Nibe ASHP?

    By Great_scot_selfbuild, February 8
    • 9 replies
    • 961 views
    • 
    • JohnMo
    • February 9

21. 2x air source heat pumps - Scotland 1 2

    By BintyAndTheBeast, December 29, 2025   

    • heat pump
    • scotland
    • (and 2 more)

      Tagged with:

      • heat pump
      • scotland
      • planning application
      • noise
    • 25 replies
    • 1.4k views
    • 
    • JohnMo
    • February 8

22. ASHP - choices, choices. Feel like I’m back at square one 1 2 3

    By Great_scot_selfbuild, February 3
    • 60 replies
    • 5k views
    • 
    • Nickfromwales
    • February 8

23. Whole‑House Renovation: Need Real‑World Advice on ASHP + Fan Coils + MVHR Integration 1 2

    By NetTechie, January 12   

    • mvhr
    • ashp and dhw
    • (and 2 more)

      Tagged with:

      • mvhr
      • ashp and dhw
      • lg
      • fan coil
    • 43 replies
    • 3.8k views
    • 
    • SimonD
    • February 3

24. Next steps on setting up the heat pump - Running Weather Compensation

    By MikeSharp01, January 28
    • 21 replies
    • 1.4k views
    • 
    • SteamyTea
    • January 29

25. Observations on need for heating upstairs 1 2

    By Post and beam, January 27
    • 38 replies
    • 2.4k views
    • 
    • Nickfromwales
    • January 28