Air Source Heat Pumps (ASHP)

1233 topics in this forum

1. Ecodan SIKA Flow sensor failure

   By joth, August 16, 2024
   • 18 replies
   • 5.2k views
   • 
   • joth
   • Monday at 17:12

2. Descaling ASHP heat exchanger

   By joth, Sunday at 19:31
   • 4 replies
   • 160 views
   • 
   • joth
   • Monday at 17:11

3. 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
   • 58 replies
   • 2.1k views
   • 
   • SimonD
   • Friday at 17:24

4. Fan Coil Units for use with a (cooling) ASHP 1 2 3 4 12

   By ProDave, July 24, 2019
   • 275 replies
   • 73.7k views
   • 
   • Michael_S
   • Thursday at 20:13

5. Ashp, ufh and fancoils. Help!

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

6. Veissmann ASHP buffer required for cooling use??

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

7. Umbrella Route to Bus Grant?

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

8. ASHP schematic - Noddy question - CCT

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

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

   By zoothorn, August 27, 2023
   • 560 replies
   • 44.1k views
   • 
   • Dillsue
   • April 26

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

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

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

    By mistake_not, April 20
    • 62 replies
    • 1.9k views
    • 
    • JohnMo
    • April 23

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

    By Michael_S, April 15
    • 26 replies
    • 860 views
    • 
    • markc
    • April 20

13. ASHP - Weather Compensation AND Zoning?

    By SBMS, April 3, 2025
    • 10 replies
    • 1.8k views
    • 
    • DamonHD
    • April 16

14. Ducted AC - quick duct size calculator?

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

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

    By CalvinHobbes, March 13, 2024
    • 7 replies
    • 4.7k views
    • 
    • Rishard
    • March 30

16. Evan Davis's Heat Pump in the Home

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

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

    By Triassic, July 15, 2018
    • 310 replies
    • 84.4k views
    • 
    • JohnMo
    • March 19

18. Siting an ASHP when no wall space available?

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

19. 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
    • 1.5k views
    • 
    • BotusBuild
    • March 10

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

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

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

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

22. Panasonic Aquarea L series cooling

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

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

    By SimonD, February 15
    • 32 replies
    • 1.6k views
    • 
    • BotusBuild
    • February 17

24. Whole house ASHP system design

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

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

    By AndySat, January 20, 2025
    • 44 replies
    • 5.6k views
    • 
    • Wil
    • February 9