After care is nonexistent...
Steer clear of Elco boilers in my 40 years experience I never dealt with such dysfunctional company there aftercare is nonexistent they boast their parts department holds thousands pound of stock every order I have made 3 to 4 weeks delivery be warned if you replacing don't use Elco boilers.
I've sent several correspondence to powers to be never had a reply even from the MD