I also swapped mine in last fall and ended up needing a recirculating pump too because the wait time for hot water was nuts at the far end of the house. It’s been solid so far, but make sure your gas line is big enough, or you’ll run into issues. I was also looking into cutting energy bills—Why switch to Octopus Energy? Their rates made a noticeable difference. Check out: https://octopus-referral-code.co.uk/worth-switching-to-octopus-energy/