I have a Vokera Excell 96 combi which must be 12+ years old. I
'inherited' it 7 years ago when I moved in and I certainly have not
had it serviced in that time. Well last week I noticed the water
pressure rose dramatically as the temperature rose. Thinking it was
probably the expansion vessel I decided to bite the bullet and get it
serviced. I rang Vokera (expecting the "You still got one of those
sir" type of responses). No, they quoted me and gave me the number of
a local agent (Servo in North London) who gave us a date and time.
They duly arrived and spent a good 90 minutes fiddling with the boiler
- they seemed to replace a number of parts - mainly rubber diaphragms
- and presented me with the bill. £100. Well I was amazed, even
smiled !! I think that was a bargain considering my car service (24K)
cost over £300 (for probably just changing the oil).

So well done Vokera.

Tim
PS I have nothing to do with Vokera or servo.
PPS Sorry for spoting off just unusual to be pleased with 'service' -
seems a rare thing these days.