Halogen Heater 1200W(instore) £3.12 @ Wilko - HotUKDeals
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Halogen Heater 1200W(instore) £3.12 @ Wilko

£3.12 @ Wilko (Wilkinson)
Halogen Heater 1200W 75% off from £12.50 make £3.12. Saw them in Bristol Bedminister store. Not sure if nationwide
filipr Avatar
6y, 9m agoFound 6 years, 9 months ago
Halogen Heater 1200W 75% off from £12.50 make £3.12. Saw them in Bristol Bedminister store. Not sure if nationwide
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6y, 9m agoFound 6 years, 9 months ago
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#1
http://roguszka.com/oferty/zdj089.jpg
#2
Need one of these today, it's FREEZING here.
#3
Very good voting HOT!!! not rushing to get one though the bright light gives me a headache
#4
Wonder why there're selling these off? Are they any good?
#5
in my experience, no. Utter useless waste of time and electricity. Doesn't radiate heat, seems to send it out in a beam that doesn't reach very far.
#6
is not so bad. takes a lot of electricity. But You have 3 levels of regulation (400W, 800W, 1200W). The room is light because of light and heater can move
#7
soled73
Wonder why there're selling these off? Are they any good?


Because its practically summer - hadn't you noticed with teh current heat wave :-D
#8
These are pretty useless unless you stand right in front of them
#9
There is a push-in safety button on the bottom of the heater which makes it only suitable for use on solid floors,if you stand it on a carpeted floor the spring loaded button just pushes into the pile and the heater will not work - Also the constant bright orange light which the heater gives off is very annoying.
#10
That's bloody cheap! I paid £12 couple of months ago, wouldn't recommend it.. as it's very very very brighton when turned on. Generates heat quickly but when you turn off they disappear instantly. But at the price.. its HOT HOT! :thumbsup:
#11
these are rubbish,use the 9 quid you have saved to pay for the extra electricity you will use
#12
arch stanton
There is a push-in safety button on the bottom of the heater which makes it only suitable for use on solid floors,if you stand it on a carpeted floor the spring loaded button just pushes into the pile and the heater will not work - Also the constant bright orange light which the heater gives off is very annoying.


That must be why they say they're for outdoor use only then.
:w00t: If it blew over in your house, you'd be glad of that (mandatory) safety switch.
#13
these are great for caravan hols:thumbsup:
#14
zygo
That must be why they say they're for outdoor use only then.
:w00t: If it blew over in your house, you'd be glad of that (mandatory) safety switch.


Outdoor use?
#15
I've got one of these and that instant heat is sometimes nice, but these cost a fortune to run so use sparingly!
#16
Even if it is only mediocre, you can't go wrong for that price!
#17
Great price i hope theres some left.

HOT
#18
Sponsored by Swalec ? :-D
#19
Are we really going to have the "more efficient heater" debate again.

All electric heaters are exactly as efficient as each other. 100% of the energy used is converted to heat unless a tiny bit escapes out of a window as light. If you think this is costing more, where is all this extra energy you are using going?

See conservation of energy

http://en.wikipedia.org/wiki/Conservation_of_energy

the formula that explains this is E=E
#20
Halogen heaters are a waste of energy unless you want a device to heat you (or whatever is in front of it) but not the air/room. They are popularly imagined to be efficient heaters, but when you understand they have to remain on to have any discernible effect, it's clear they are inefficient and ineffective for the vast majority of indoor uses.
#21
Liddle ol' me
Halogen heaters are a waste of energy unless you want a device to heat you (or whatever is in front of it) but not the air/room. They are popularly imagined to be efficient heaters, but when you understand they have to remain on to have any discernible effect, it's clear they are inefficient and ineffective for the vast majority of indoor uses.


So where do you imagine this 1200 watts of energy that you are using is going?

It all ends up in the room, and in the air of the room. Even it it heats an object, that object gets hot and heats the room. The heat transfer to the air is always going to be the same.
#22
I had one of these a couple of years ago, It does a great job of lighting up the room with an amber glow.
As Far a heating the room is concerned, forget it.
#23
Great value!

These don't create a build of heat in a room, they are instant heat on / instant heat off, but they work very well in small areas, and with low wattage power settings they are ideal for caravans which are usually restricted to a 13 or 16 amp supply, which is what I use one for.They are also very safe, most of these type of heaters have safety switch so if knocked over, they automatically switch off.For lasting heat, I use mini oil filled radiators in the caravan bedrooms which are also low wattage, but I find this heater useful for moving around when I need instant heat, such as when the gas cylinder runs out towards the end of the season!

Heat Added:thumbsup:
#24
jamesdew
So where do you imagine this 1200 watts of energy that you are using is going?

It all ends up in the room, and in the air of the room. Even it it heats an object, that object gets hot and heats the room. The heat transfer to the air is always going to be the same.


Go do some reading on this subject. Things are rarely as simply as ignorance imagines :thumbsup:
#25
Liddle ol' me
Go do some reading on this subject. Things are rarely as simply as ignorance imagines :thumbsup:


ha do some reading, I just linked to conservation of energy. Why don't you read that. You can't create or destroy energy it's basic physics, if you use 1200w of electricity you create 1200 watts of heat. "Go do some reading" is the response of a person who doesn't know what he is talking about.
#26
jamesdew
ha do some reading, I just linked to conservation of energy. Why don't you read that. You can't create or destroy energy it's basic physics, if you use 1200w of electricity you create 1200 watts of heat. "Go do some reading" is the response of a person who doesn't know what he is talking about.


Nice try, but you are forgetting at least one basic principle. Since you are an expert in physics, I won't spoil the fun for you of remembering it :thumbsup:
#27
Liddle ol' me
Nice try, but you are forgetting at least one basic principle. Since you are an expert in physics, I won't spoil the fun for you of remembering it :thumbsup:


I have a degree in electronics, and as part of that degree I have studied heat dissipation quite extensively so yes I am quite read in this area. You can always balance the heat produced with the electricity used, I'm not sure what other basic principle you are referring to but there's only one at play here. Use use electricity, you must create heat I'm not sure what you are struggling to understand.

You are mis-informing people.
#28
jamesdew
I have a degree in electronics, and as part of that degree I have studied heat dissipation quite extensively so yes I am quite read in this area. You can always balance the heat produced with the electricity used, I'm not sure what other basic principle you are referring to but there's only one at play here. Use use electricity, you must create heat I'm not sure what you are struggling to understand.


:lol:

edit - sorry that smiley looks more rude than what I am trying to convey. No disrespect intended. And in fact, I'll leave this this now and see if others want to develop the conversation.
#29
jamesdew
... if you use 1200w of electricity you create 1200 watts of heat.


Really?

I think you have to be VERY careful what you are implying here. Do you think that 100% of the energy is converted to heat by the heating element, 100% of this heat is radiated from the device and also that 100% of that energy is absorbed in the room?

Where and when did you get this degree in electronics ?
banned#30
Blimey all this nonsense again

these work fine, they work even better in the cold garage, as the heat goes forward towards you, and not up and out the way. Put one near you you and the heat warms you. as total of 1200 watts it wont heat a room on a cold day, but if you are in front of it, you are warm, so its quite efficient.
#31
bigsky
Really?

I think you have to be VERY careful what you are implying here. Do you think that 100% of the energy is converted to heat by the heating element, 100% of this heat is radiated from the device and also that 100% of that energy is absorbed in the room?

Where and when did you get this degree in electronics ?


All energy ends up as heat, the only potential loss would be light escaping through a window as I mentioned earlier. Light will hit objects in the room which will warm up and transfer their heat to the room.

When we talk about say a light bulb being say 5% efficient that is because 95% of the energy generated is heat only 5% is light. However a heater turns all (yes all) of it's energy into heat.

Possibly not all of it is radiated, some would probably heat up the heater itself which would then be transferred to the room.

I guess the advantage of these is that they can be more efficient at heating a person, since you can direct the heat. You can therefore get greater "efficiency" by heating a person directly rather than just heating the air around them.

Where do you think the energy is going if you don't believe the heater is 100% efficient?

Why do we have this debate every time there is a heater deal, have a look at the previous heater deals its the same discussion every time.

And I got my degree from UWIC in 2005.
#32
so as anyone else found these at this price been voted hot
suspended#33
You would have to be sitting right in front of it to feel it and even after that it just burns you after a while! Doesnt do diddly squat more then a few metres away. ud be warmer in an extra jumper and that doesnt cost any electricity like this power hungry 1200 Watt monster!!
banned#34
you wouldnt use this on full setting in a medium sized room, but even if you did, it would cost between 14-20p per hour to run on its top setting, which you wouldnt have it on most of the time anyway. I have one of these and think they are great.
#35
bigsky
Really?

I think you have to be VERY careful what you are implying here. Do you think that 100% of the energy is converted to heat by the heating element, 100% of this heat is radiated from the device and also that 100% of that energy is absorbed in the room?

Where and when did you get this degree in electronics ?


Yes, jamesdew is correct. I will happily back him, as back in GCSE Science in Physics, just over a year ago we learnt about Electricity. That was applied to real life situations, where our teacher explained how light bulbs were not entirely efficient, and pretty much nothing was, and the only exception to this was a heater.

jamesdew
All energy ends up as heat, the only potential loss would be light escaping through a window as I mentioned earlier. Light will hit objects in the room which will warm up and transfer their heat to the room.

When we talk about say a light bulb being say 95% efficient that is because 90% of the energy generated is heat only 5% is light. However a heater turns all (yes all) of it's energy into heat.

Possibly not all of it is radiated, some would probably heat up the heater itself which would then be transferred to the room.

I guess the advantage of these is that they can be more efficient at heating a person, since you can direct the heat. You can therefore get greater "efficiency" by heating a person directly rather than just heating the air around them.

Where do you think the energy is going if you don't believe the heater is 100% efficient?

Why do we have this debate every time there is a heater deal, have a look at the previous heater deals its the same discussion every time.

And I got my degree from UWIC in 2005.
#36
These are rubbish, wouldn't recommend even for such a low price.
#37
As jamesdew says, they are nearly 100% efficient. They transfer the energy to heat and light (sound and motion too if the oscillation is on). As they heat objects more than the air, the effects will be differently felt to, for example a fan heater.
Any objects heated will give out the same amount of energy which has been put into them, even though this may be a while later and will depend on the thermal capacitance of the particular objects.
Anyway, at this price HOT! :)

Edit: Also I've done A-level physics and am doing a civil engineering degree currently.
#38
jamesdew

I am not sure how to pitch this response, but do think that when you come out with sweeping statements and then say "you've got a degree in XXX" as some kind of justification that you are right and everybody else is wrong you do need to be challenged.

The inference by some from your statement will be that all 1200W heaters will make them warm to the same level. Yet that seems to be in contrast with the less technical opinions on this thread that have something of a negative view on the performance of halogen heaters. So let's have a look at your last post, and I will try to keep things simple.

jamesdew
All energy ends up as heat, the only potential loss would be light escaping through a window as I mentioned earlier. Light will hit objects in the room which will warm up and transfer their heat to the room.


For simplicity let's accept the conversion efficiency at the point where the work is done: there is total conservation of energy (though as an electronic engineer you will appreciate the interaction of the voltage source and the load and the potential for losses not just at the heater but anywhere in the transmission system, but as I said let’s assume a purely resistive load and a perfect zero-impedance source connected to the heater via a bit of ideal cable). Now clearly there is some light produced by this heater, more in fact than any most other heaters. But we can, again for simplicity, ignore this. So concentrating on the heat alone, where does this go? Well it’s radiated isn’t it? Not all of it; some is convected and conducted. The conducted heat will be through the terminals of the heater element into the heater itself, which is presumably of fairly low thermal mass. So let’s ignore it. The convected energy will pretty much go straight up above the heater (assuming no draughts in the room). The heat energy that we can consider as useful is being radiated (through the air) in front of the heater. Are we in agreement at this stage?

You also said that light hits objects in the room which will warm up and transfer their heat to the room. I think we are assuming that light energy is a small fraction of total energy, but even so your assumption is that the room exists in perfect isolation (indeed perfect thermal isolation) to everything else. Which is wrong.

jamesdew
When we talk about say a light bulb being say 95% efficient that is because 90% of the energy generated is heat only 5% is light. However a heater turns all (yes all) of it's energy into heat.


Now, I think you got that the wrong way round. A light bulb that produces only 5% light would be 5% efficient. Although earlier you have already stated that light falling on objects in the room turns light energy into heat energy. So are all light bulbs 0% efficient as 100% of their energy becomes heat? That’s an interesting question.

jamesdew
Possibly not all of it is radiated; some would probably heat up the heater itself which would then be transferred to the room.


A bit conducts to the heater. And then there is energy that is convected upwards. OK, let’s get a bit more of a grip on this room shall we? Is it insulated? Perfectly? Can no energy leave it? I am guessing the answer is no. Do you see where I am going with this?

jamesdew
I guess the advantage of these is that they can be more efficient at heating a person, since you can direct the heat. You can therefore get greater "efficiency" by heating a person directly rather than just heating the air around them.


I thought all heaters where 100% efficient by your reckoning? How can you get greater efficiency than 100%. Is it making energy now? :)

The ability for a body to absorb this radiated energy depends very much on the wavelength of the radiated energy, the absorption characteristics of the receiving object (i.e. you) and the attenuation of the medium it is radiating through (i.e. the air in the room). And there lies the problem; if you are anywhere other than slap bang on top of this type of heater then you’ll hardly notice it is on as it will just heat the air in front of it and that will convect upwards. So this type of product really just heats the ceiling above it. It’s a fairly slow and inefficient way to get warm and the thermal equilibrium you keep eluding to is unlikely to ever be achieved in a typical domestic room as the losses through the ceiling (and walls etc) will far greater than the energy this unit can provide.

jamesdew
Where do you think the energy is going if you don't believe the heater is 100% efficient?


Where is it going? It’s going out of the room mostly. It’s not efficiently heating us up. That’s why we are getting chilly with this radiant heater.

jamesdew
Why do we have this debate every time there is a heater deal, have a look at the previous heater deals its the same discussion every time.


Sorry, this is the first heater thread I have ever commented on. Do you always play the 100% efficiency card against public opinion that this is a naff way to heat a room?

jamesdew
And I got my degree from UWIC in 2005.


Well done. I reckon you did some theoretical heat loss calc for heatsinks etc where everything is conducted. It’s useful stuff for electronics design but as soon as you get air masses in large rooms in the “real world” it isn’t quite as simple. ;-)
#39
I've got one sort of similar to this and it's good if you are directly in front of it. These are similar in style to the ones you get outdoors at the pub - they're fine if you are under them but if you move out of the short radius it is useless (if used outdoors) indoors I suppose it does heat the room but a small fan heater is far more efficient at doing that.
#40
surely a small amount of the 1200watts would be lost as light energy? im happy to be shown to be wrong!

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