What temperature do you have your house?

[adam2]

I - including our Ukrainian refugee, who's built like a tank and should know better. I am seriously contemplating sticking a pic of putin on the thermostat to remind everybody where (some of) that money goes!

I like that idea! "putin gaz, use more and help putin to liberate more of Ukraine"

No putin gaz here, I am glad to say, locally produced logs and a little Welsh anthracite.

[Forever_Winter]

Same here Adam .

No Putin fuel. 1.5 tons of solid fuel from USA and other countries.

[RenewableCandy]

As a slight aside, there is now such a thing as a heat pump that doesn't necessitate a complete refit of the rest of the heating system, as it will run at the higher temperatures that most gas-powered CH systems expect:

https://www.theengineer.co.uk/content/n ... heat-pump/

Not sure what its typical COP is, mind.

[adam2]

As a slight aside, there is now such a thing as a heat pump that doesn't necessitate a complete refit of the rest of the heating system, as it will run at the higher temperatures that most gas-powered CH systems expect:

https://www.theengineer.co.uk/content/n ... heat-pump/

Not sure what its typical COP is, mind.

COP is bound to be less at a higher output temperature than at a lower temperature.
It might in some circumstances be worth considering a high COP/low temperature heat pump connected to existing central heating radiators. The heat output will be less than with a gas boiler, but might still suffice if insulation was improved at the same time.
Or even use this low temperature heat pump in moderately cold weather and use a solid fuel stove for the coldest days. A stove is a useful thing to have for when the heat pump breaks or the electricity supply fails. Having incurred the capital cost of the stove, one might as well use it on the say the dozen coldest days of each winter.

[Ralphw2]

The last I heard the Cozy 6 had not yet received MCS accreditation, so could not yet attract the £7500 government grant. MCS is not a very efficient quango. I am getting my heat pump survey from octopus next week, and I am being asked to upgrade my microbore pipes at my own expense, as they will be quoting for a lower temperature heat pump, and the one quote I got for the pipework was for £7000. At that price I would never recoup the total cost, and I would have a house full of ugly surface pipework. If I could keep my existing pipework and radiators and use the cozy 6 at a lower cop, I could still significantly reduce my heating bills by doubling the size of my house battery to 20KWh and running the heat pump off cheap overnight power.

[kenneal - lagger]

As the Cosy 6 runs at high temperatures of 78-80°C, it will be compatible with most existing radiator and hot water systems, though high temperature heat pumps are not as energy efficient as devices that operate at lower temperatures.

Their own article admits to the lower efficiency. They are more than doubling the output temperature so I would have thought that the COP would halve.

If you have a supply of logs at a good price and a heat pump I would have thought it best to run the wood burning stove as much as possible and only top up with the heat pump. It's much more cosy sitting in front of a log fire than a radiator, no matter what colour it is painted!

[Default0ptions]

As the Cosy 6 runs at high temperatures of 78-80°C, it will be compatible with most existing radiator and hot water systems, though high temperature heat pumps are not as energy efficient as devices that operate at lower temperatures.

Their own article admits to the lower efficiency. They are more than doubling the output temperature so I would have thought that the COP would halve.

If you have a supply of logs at a good price and a heat pump I would have thought it best to run the wood burning stove as much as possible and only top up with the heat pump. It's much more cosy sitting in front of a log fire than a radiator, no matter what colour it is painted!

Mid-terrace 1850’s house here. A few scoops of coal in the stove in the evening and the whole house is still warm in the morning.

No heat pump but moveable calor gas heater to warm a bathroom before the grandson has a bath.

[kenneal - lagger]

I hope you have the bathroom well ventilated and closed off from the rest of the house or you are going to cause damp problems probably in the bedrooms by using a calor heater which gives off a large amount of water vapour.

[RenewableCandy]

I hope you have the bathroom well ventilated and closed off from the rest of the house or you are going to cause damp problems probably in the bedrooms by using a calor heater which gives off a large amount of water vapour.

Ya beat me to it with the damp issue.
Deffo only work the thing in the bathroom, and ideally also install one of those Heat Recovery fans to get the moisture out but keep the warmth in.

[kenneal - lagger]

..................
................... and ideally also install one of those Heat Recovery fans to get the moisture out but keep the warmth in.

There are ones which fit into a 225 x 225 (9" x 9") airbrick if one is available and others which will fit into a hole cut in a window pane.

[adam2]

Since finally fitting a stove in our living room the temperature is easily maintained at a comfy 21 C
with a much lower consumption of solid fuel (logs, turf and a drop of smokeless coal occasionally) than
previously required to achieve 18 C with the fireplace.

My late father, who designed heating systems for a number of hospitals, commented that he thought the consultants
probably had shares in oil companies considering the high temperatures they insisted be maintained in wards.

In the particular case of hospitals, I agree that higher temperatures are desirable.
Hospital gowns provide almost no warmth and little coverage. Ridiculous garments !
Hospital blankets are almost useless, very small, very thin and made of polyester.
I was cold in hospital despite a room temperature of 23/24 degrees in the day and 21 degrees at night. Night staff were wearing hospital blankets to keep warm
Providing warmer clothing and bedding would be expensive due to the numbers required and the need for frequent changes. Probably simpler to accept the fuel cost.

At home I find 23 degrees in the living room ample, and 15 degrees in the bedroom to be ample, but I wear warmer clothing than a hospital gown ! and use cotton twill sheets and wool blankets.