Moose
The new condensing boilers have a hard time because of the recirculating gases,
which are corrosive, I understand, hence their shorter life. Some gas boilers
over here are lasting less than 10 years.
I don't have a connection to mains gas, and getting one is a strange, obscure
and complicated process. Our oil tank is too close to the house for modern
building regulations so a heat pump is looking attractive for its relative
simplicity as well as all for all the Government's incentives.
Chris
On 28 Nov 2012, at 22:52, Moose <olymoose@xxxxxxxxx> wrote:
>
> I ran the numbers, new, 95% efficient furnace vs. old, 60-65% efficient one.
> Payout, 20-25 years. Estimated life of new
> furnace, 15 years.
>
> The existing furnace is close to 60 years old, dead simple, no electronics,
> built for the ages, and still going strong.
> I added some wiring and a relay to adapt it to electronic thermostats years
> ago.
>
> I have a hard time justifying replacement while it works.
>
> Of course, nothing was as cost efficient as the five years while our electric
> meter was broken. If it weren't for those
> d__n smart meters being installed, I'd still be heating electrically for free.
>
>> But the temperatures don't get very low here in Cambridgeshire, so perhaps
>> it would be OK. On the other hand, this is an old house (1750s) and has
>> only single thickness wall and limited scope for insulation.
>
> My house is much younger, but otherwise our situation is much the same. Hard
> to monetarily justify new tech in a mild
> climate.
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