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John Rumm John Rumm is offline
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Default Heat-pump vs condensing boiler

On 02/10/2020 10:57, Radio Man wrote:
Martin Brown wrote:
On 01/10/2020 21:17, Andy Burns wrote:
Martin Brown wrote:

The only person I have met that had one installed in domestic premises
was bitterly disappointed with the running and servicing costs.

I've heard one second-hand tale where the coils were undersized and it
couldn't extract sufficient heat, still not sorted yet


Possibly their problem too. Look very carefully at ongoing maintenance
costs too - that was their other major gripe.

In theory they should have been ideal customers being retired and at
home all day but they were sold a pup. It cost more than fuel oil to
do the same heating job (back when oil was still expensive pre-Covid).

I'm still trying to weigh-up whether to go for GSHP or LPG on a new
build, it is quite touch and go.


If you can design it in as underfloor central heating and get the
building insulation very very good then you might have a chance.


Underfloor Heating is wonderful to live


Quite likely in some cases...

with but bloody expensive to run a


As an unqualified statement that is not even wrong.

There is no reason why it should be any more expensive that other forms
of heating necessarily. However it does need to be properly installed
with appropriate levels of insulation under the heating matrix.

With a condensing gas boiler, it will let you run at high condensing
efficacy pretty much all of the time. It can also be a good way of using
lower grade energy sources like solar thermal.

If you use electric UFH with no heat pump (i.e. just resistive heating)
then it will be expensive, as is any form of resistive electric heating
(and unlike storage heating, you can't shift as much to cheap rate prices).

Also consider the choice of floor coverings. If you favour heavy carpet
on thermal underlay, then UFH is not a good match. Solid tiled, wood etc
floors however work well.

Its works best in places that are continuously heated, since there are
usually longer hear up times.

friend has it but dreads the bills. We visited when they first moved in and
it was glorious but next time we needed thermal underwear and were given
blankets in the sitting room after the first bill.


So extrapolating from an example of one, all UFH systems are to be
condemned huh?



--
Cheers,

John.

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