On 11/12/2017 14:47, Dave Plowman (News) wrote:

What do you think needs maintence on a condensing boiler that doesn't need
doing on a non condensing one?

It's just got more "stuff" to go wrong.

Condensing are more complicated than a very basic non-condenser, so
*might* need more repairs. But a good condenser is going to be more
reliable than a poor non-condenser. And will certainly save any repair
costs due to the much higher efficiency, so lower bills.

It's more difficult to decide whether it is worth the capital outlay if
your non-condenser is still OK.

My non-condenser has an efficiency rating of 79.7% a new Valliant ecotec
is rated at 91.5% 12% saving on bills would take quite a long time to
balance off savings against initial outlay.
I'll see what the verdict is on Thursday after engineer visit.