Problems with ASHP supplied on Eco 4 grant

2muchfun

In October 24 we had a whole system installed under an Eco 4 grant ( due to husbands ill health) It didn’t work properly for 12 months ( by their own admission) We had regular return visits from plumbers, electricians & surveyors. It took until October 25 for it to work as designed. I can see from our electric bill that our electrical use has gone down considerably since it has started working efficiently. Can I claim any of those costs back from the installer? Do I need to wait for 12 months to cover the period of it not working properly? 

We already had solar thermal panels for hot water which were serviced regularly. It appeared that the ASHP installers had managed to drain the glycol from the system at a cost to us  of £210 & “rendering the system unusable” All that lovely sunshine wasted.
any advice for a consumer welcome, Thankyou.

MWT

What does 'It didn't work properly' mean?

Many people unfamiliar with heat-pumps will have problems initially until they either figure it out or get help from the installer, that doesn't mean it was faulty or badly installed, just that the necessary understanding about the setup wasn't communicated well, but perhaps there were specific faults that you can tell us about...

Similarly a lack of glycol could cause issues in the extreme cold, but otherwise would not on its own be a something that would make the system immediately 'unusable', and in some cases it isn't even needed if the installer fitted anti-freeze valves. 

Netexporter

I think the glycol was in the existing solar thermal panels, which shouldn't have been drained.

QrizB

Netexporter said:

I think the glycol was in the existing solar thermal panels, which shouldn't have been drained.

... unless decommissioning the solar thermal system was always part of the plan.

The heat pump installers probably installed a new HW tank; they'd need a dual-coil tank if they were to maintain the solar thermal.

Honestly without more info we're grasping at straws.