In article ,
"spamlet" writes:
Is there such a thing? If so, does anyone have one they know to have run
trouble free for say 3 years: if so what make is it?

Of the heating systems I maintain in various family members' homes,
I've never had one fail. (They're all mid position values.)

GBMVSP-23 (British Gas - don't know who makes it):
Somewhere between 10 and 20 years old.

Lifestyle (is that Drayton?):
11 years old.

Landis and Staefa:
7 years old.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]