portable heaters that will heat a large room properly

ButtercupDaisies

I work from home (in my 11 sqm bedroom).

House was built in 1880 but renovated in 2015. Insulation is pretty good. EPC E but only because hot water + heating are electric. 

I'd rather buy a portable heater than turn on our (electric) radiators. I've been warned that a portable heater won't sufficiently warm up the bedroom.

Does anyone have any recommendations? I want one that will adequately heat the room (about 20 degrees) when its freezing outside.

Scot_39

With respect, that was not the question you asked in your other thread, and so the answer was different.

You asked for instance about a 1kW heater - and using it between 2 rooms for only 12 hours in total iirc. to match a total heating cost.

You can use some heater suppliers calculators to work out what size of heater you will need.

Dimplex have one for instance - 

https://www.dimplex.co.uk/room-heating-calculator

Try using it.

Select a heater type and look at its rating (output not input power if try selecting a storage type heater). 

Then if you want to heat the whole flat - repeat for each room / space - living room 2nd bedroom bathroom hall etc.

And if expect to leave a room door open to heat another part of flat - from the heater in another room,  you need to add the answers together.

As you will see - from the data asked for floor area alone is not enough.

But many will table a floor area as a guide based on some assumptions re the other answers

E.g. for Quantums
https://www.heatershop.co.uk/storage-heaters/dimplex-quantum-rf

So 1kW output for 10m2, 1.25kW for 12 m2.
And re your last 12 hr question  that's I suspect 24 hrs in worst case outside temp assumption - not 12 hrs or 8 hrs etc.  To achieve and maintain over time.

And as answers in other thread, would need more power from a Plugin initially to raise from cold in morning etc.

So basically for just that 1 room, you could buy a 2 power heater say 1 or 2 kW, would use 2kW to raise quicker in morning, 1 kW to maintain once at temp.

Not the same answer as 2 rooms, or maybe all 6 areas (living room, 2 bedrooms, kitchen, bathroom, hall)

QrizB

ButtercupDaisies said:

I work from home (in my 11 sqm bedroom).

House was built in 1880 but renovated in 2015. Insulation is pretty good. EPC E but only because hot water + heating are electric. 

Wait, so you already live in this property? Until now you've given the impression that you're comparing estate agents details for flats you're looking at.

If you already live there, all this talk of EPCs is less important.

How long have you lived there? If it's a year, how much electricity have you used in the past 12 months?

lohr500

If it is just to keep you warm in one room whilst working from home, have you considered an electric throw over blanket?
 
My wife bought one from Aldi when she was home working a lot.
It is really effective and doesn't cost a lot to run. It is rated at 160 Watts.

So even if it ran at full power continuously (which it might not do as it could have some form of thermostat) it would provide 6 1/4 hours of heat for 1kW/h of electricity. 

markin

A heat pump, known as a split ac unit, would give out up to 5 kwh of heat for ever 1kwh input, it gets worse as the temp drops below 0c but should still work at -25c. Cost around 1,500 installed, you would also need the freeholder permission.

The is no need to keep starting a new thread every time you have a new question.

MultiFuelBurner

markin said:

A heat pump, known as a split ac unit, would give out up to 5 kwh of heat for ever 1kwh input, it gets worse as the temp drops below 0c but should still work at -25c. Cost around 1,500 installed, you would also need the freeholder permission.

The is no need to keep starting a new thread every time you have a new question.

I mentioned that on their other thread but they ignored that and started a new thread lol

jrawle

ButtercupDaisies said:

I work from home (in my 11 sqm bedroom).

House was built in 1880 but renovated in 2015. Insulation is pretty good. EPC E but only because hot water + heating are electric. 

I'd rather buy a portable heater than turn on our (electric) radiators. I've been warned that a portable heater won't sufficiently warm up the bedroom.

Does anyone have any recommendations? I want one that will adequately heat the room (about 20 degrees) when its freezing outside.

Electric only doesn't meant a property has to be rated E. I used to live in an all-electric flat and it was rated C. But not all electric heating is created equal. Storage heaters or a heat pump and perfectly good ways to utilise electricity for heating. It sounds like you have the absolute worst option: "electric radiators". These were presumably installed in the 2015 renovation, probably when they threw out old but perfectly serviceable storage heaters that would have allowed you to heat the property much more cheaply.

markin

MultiFuelBurner said:

markin said:

A heat pump, known as a split ac unit, would give out up to 5 kwh of heat for ever 1kwh input, it gets worse as the temp drops below 0c but should still work at -25c. Cost around 1,500 installed, you would also need the freeholder permission.

The is no need to keep starting a new thread every time you have a new question.

I mentioned that on their other thread but they ignored that and started a new thread lol

An air to water system is at least £8K, and then the is the problem of placing the far larger unit in a communal garden, An Air to Air is far smaller and wall mountable, A 5hr or less job for 1 person.

QrizB

markin said:

An air to water system is at least £8K, and then the is the problem of placing the far larger unit in a communal garden, An Air to Air is far smaller and wall mountable, A 5hr or less job for 1 person.

You can hang an air-to-water system on a wall too. It's uncommon but not especially difficult. (You might need a crane to lift it into place.)

Chrysalis

I think a blanket is a better bet, portable heaters will heat a small room, a large room might need multiple 2000 watt heaters.

Qyburn

For that size room, 2kW would probably do. If it's specifically for working at a desk, a fan heater under the desk might do the trick.

Or get used to the temperature. My home office was essentially unheated because the TRV was temperamental and also because I couldn't heat just that room without heating the whole house. I found it quite OK down to 12 or 13 Deg.C. Sometimes put a rug over my knees when it was below 10.