A large part of why I went with Tempasure is Len, who spent a lot of time on the phone with me (more than one call) going over the installation, the choice of boiler, extending the life of the boiler, etc.. I felt after our conversations - and after reading the many glowing reviews - that if something went wrong, he'd be there to take care of it.
The guys who did the actual installation were friendly and hard-working, and when they hit a couple snags in the exterior ducting they walked me through it, and while I was a little alarmed at some of the (de)construction that needed to be done, they cleaned up and repaired it.
I hadn't understood that there was a whole other element to this boiler that I didn't have with the previous one, which involved a separate machine which pumps out the water condensation from the boiler (at least I think that's what it does.) That required drywalling after the installation, which is a separate cost ( Len had mentioned the drywalling, what I don't recall is whether this extra machine was mentioned.) I mention it just so that you know you might end up with one more element than you expect.
Len takes pride in his work and his word and I have spoken with him since posting my initial review; I have since edited the review and rating.