On 26/11/2017 22:01, David wrote:
Following on from a couple of recent threads, and using
https://www.confusedaboutenergy.co.u...ic-fuels/fuel-
prices
as a reference.

John Runn said "If you fitted heatpump aircon instead, then it would be a
third to a quarter of the price for normal resistive heating."

That would give an electricity cost of about (15.4/3) 5.1 pence per kWh.
Possibly down to under 4p per kWh if the better estimate was met.

This compares to 7.1 pence per kWh for wood bought by the ton.
Smokeless fuel is 6.3 pence per kWh when bought by the ton.

This makes using a wood burner in the shed a pure vanity project.

That does depend a bit on what you do in the shed... if its used for
woodworking any you have ready stream of wood offcuts, then that may
change things.

(same would apply if its a "man cave" and what you really want is nice
real fire to put your feet up in front of!)

FWIW, I heat most of my outbuildings using thermostatically controlled
fan heaters. However most of the time they are just ensuring that the
temp stays above the dew point to stop stuff getting damp or rusting.
They are also insulated to one degree or another. I won't need them to
be at a comfortable temperature most days - so low installation cost and
ease of install / use is the winner for my use pattern.

So on pure cost effectiveness on fuel use the air source heat pump seems
to win hands down.

It makes sense for frequent use spaces. Something like the split unit
heat pump that Richard installed in his office outbuilding:

http://wiki.diyfaq.org.uk/index.php/...ir_Conditioner

makes lots of sense, since its in use most days, and will need cooling
and heating depending on the time of year.


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/