london8 Posted January 23 Posted January 23 . Does a portable electric heater without a thermostat exist? I mean this: I don't like it when the thermal sensor turns the heater on and off based on the current room temperature. I want the heater to be permanently on. I just want to choose one of the options in advance, for example: 1000W, 2000W, or 3000W. If it exists, could you please provide me with a link to a specific page where it is for sale? I've been searching on Google all day. Unfortunately, I only find portable electric heaters with a thermostat, which I don't want. Many thanks.
JohnMo Posted January 23 Posted January 23 11 minutes ago, london8 said: just want to choose one of the options in advance, for example: 1000W, 2000W, or 3000W Just get a heater with power setting and put thermostat on full. But if you only need 700W you will slowly get hotter and hotter, without some sort of control
london8 Posted January 23 Author Posted January 23 . JohnMo, ...But if the sensor on the heater detects the maximum possible temperature, for example, 30 degrees, it automatically turns off the heater. But I don't want that because in other parts of the room, the temperature is much lower than what the thermal sensor detects right next to the heater. Therefore, I need a heater that does not have this thermal sensor/thermostat at all, so that the heater does not turn off automatically after reaching the maximum temperature of, for example, thirty degrees. Does such a heater exist? If so, please provide a link. Thank you.
ProDave Posted January 23 Posted January 23 53 minutes ago, london8 said: . JohnMo, ...But if the sensor on the heater detects the maximum possible temperature, for example, 30 degrees, it automatically turns off the heater. But I don't want that because in other parts of the room, the temperature is much lower than what the thermal sensor detects right next to the heater. Therefore, I need a heater that does not have this thermal sensor/thermostat at all, so that the heater does not turn off automatically after reaching the maximum temperature of, for example, thirty degrees. Does such a heater exist? If so, please provide a link. Thank you. It sounds like one heater is struggling to heat that room, hence the very high local temperature. I would try 2 smaller heaters, one at each end of the room. Or look at why the room needs so much heat?
Alan Ambrose Posted January 23 Posted January 23 Yeah, I think just turn the heater stat up to a higher temperature. We have towel radiators on thermostats which are positioned outside the bathrooms the rails are in. To get a straight timer schedule only (the stat manufacturer we use for everything else doesn't have a timer-only version) .... I just set the 'target temperature' to 'high' and that sorts it. (Actually 24C on the basis if its generally that hot we don't want the rails on anyway.) But it could be 34C.
london8 Posted January 23 Author Posted January 23 . I remember how my grandmother had a very old type of electric heater, where she could choose one of three heating power settings, and then the heater would heat continuously and the warmth was constant. But today's modern ones with thermostats are terrible: every now and then the room gets cold because the thermostat decides to turn off the heater just because it was already 24°C in the immediate vicinity. The thermostat doesn't care that a few meters away from the heater it's only about 20°C. I don't understand why they make such a ridiculous system. I would only understand it if the thermal sensor could be placed separately somewhere in the room away from the heater. But such a heater would probably be too expensive. The good old types of electric heaters without thermostats were the best!
MJNewton Posted January 24 Posted January 24 10 hours ago, london8 said: the thermostat decides to turn off the heater just because it was already 24°C in the immediate vicinity. The thermostat doesn't care that a few meters away from the heater it's only about 20°C Have you found this with multiple heaters or just the one? I am sure our backup heater would effectively remain permanently on if cranked all the way round to max. Note that the thermostat is usually under the heat source and so is measuring the incoming air flow - at ground level - which will be significantly cooler than the air elsewhere in the vicinity (certainly that at sitting/standing height).
london8 Posted January 24 Author Posted January 24 I found this with multiple convector heaters because all of them had the stupid system using the thermostat. This is why a convector heater with NO thermostat is a must. My grandmother had a very old type of electric convector heater with NO thermostat and she never had any such problem.
MJNewton Posted January 24 Posted January 24 (edited) Understood. I hesitate to recommend this, but bypassing the thermostat is always an option, and convector heater wiring is usually easily visible and accessible. Be careful not to inadvertently bypass any safety cutouts though if doing this. Edited January 24 by MJNewton
Nickfromwales Posted January 24 Posted January 24 12 hours ago, london8 said: The good old types of electric heaters without thermostats were the best! And the cause of a lot of house fires. Just put a desk fan in the room to ‘waft’ the heated air about the room and that’ll work quite effectively, but as said just get 2 small heaters vs one just overheating the local area to it. FYI I use 2x £19.99 fan heaters in my office which can switch between 1 or 2kW and have stats on board. Almost instant heat, only on when needed, and fill a decent volume of air / space. I doubt you’ll find such a heater, as you ask for, as they’d just be dangerous to use. I wouldn’t want one in my house. Nearest thing would be an infrared bathroom heater which is fixed and up & away from people and combustible things. LINK
Nickfromwales Posted January 24 Posted January 24 1 minute ago, MJNewton said: Understood. I hesitate to recommend this, but bypassing the thermostat is always an option, and convector heater wiring is usually easily visible and accessible. Be careful not to inadvertently bypass any safety cutouts though if doing this. Yikes 😟 If the thermostat is a design feature to prevent the heater itself from ever getting above a certain safe operating temperature, then 🔥. 👎. No bueno.
MJNewton Posted January 24 Posted January 24 Just now, Nickfromwales said: Yikes 😟 If the thermostat is a design feature to prevent the heater itself from ever getting above a certain safe operating temperature, then 🔥. 👎. No bueno. In the ones I've seen the thermal cutout is separate (but co-located hence the caution). Very limited sample size though.
Nickfromwales Posted January 24 Posted January 24 6 minutes ago, MJNewton said: In the ones I've seen the thermal cutout is separate (but co-located hence the caution). Very limited sample size though. Sorry, this touches a nerve as it’s just a little too open to misadventure imho. What if the stat is there to prevent local overheating of floor covering / other build fabric?
MJNewton Posted January 24 Posted January 24 That cannot be predicted and accommodated by the manufacturer otherwise they'd have to configure the stat to enable safe usage of the heater in a worse case scenario such as being situated on a bed, sofa etc. One has to assume the heater is used in accordance with the instructions and not put on/near anything that would be affected by the heat.
Nickfromwales Posted January 24 Posted January 24 Our opinions on advice to bypass the thermostat on a domestic electric heater are “dissimilar”. ☺️ 2
JohnMo Posted January 24 Posted January 24 13 hours ago, london8 said: electric heaters without thermostats were the best Good old days when energy was a cheap, no-one cared how much energy they used. 13 hours ago, london8 said: remember how my grandmother had a very old type of electric heater, where she could choose one of three heating power settings, and then the heater would heat continuously and the warmth was constant And the whole house was cold except 2 foot away from the heater. If you want an even spread of heat use several heaters. 1
MJNewton Posted January 24 Posted January 24 (edited) 20 minutes ago, JohnMo said: And the whole house was cold except 2 foot away from the heater. Ah, yes, getting ready for school in front of the gas fire. Roasting - burning in fact - one side of your body whilst the other side was literally freezing. Kids these days don't know they're born. There, I've officially turned into my Dad. Edited January 24 by MJNewton 1
Nickfromwales Posted January 24 Posted January 24 Found my son in his attic room, wrapped up in a quilt in front of his PC, with the A/C set to 16° ffs…..🤦♂️ 1
london8 Posted January 25 Author Posted January 25 (edited) . The core issue is that thermostats automatically change and cause shockingly unpleasant temperature changes in the room by harshly turning the heating on and off (cold/warm/cold/warm/cold/warm, etc.). Unlike my grandmother's old type of heater, which had no thermostat and therefore provided wonderfully cosy continuous warmth at a constant temperature, depending on how it was manually set before turning it on from a selection of about three power wattage options. Some heaters even had about ten manual power wattage settings or a vast number of power wattage settings by turning a control knob to any position. Of course, my grandmother's old type of heater had a thermal cut-off to prevent overheating. This was not a thermostat, which it did not have, but merely a thermal cut-off. My grandmother had the heater on continuously every winter, autumn, and spring. Usually, the heater would turn off by itself about twice a winter due to overheating. When this happened, you had to wait until it completely cooled down for an hour or two and then manually turn the heater back on. Naturally, every such old type of heater was designed to stand on a carpet without any fire hazards. It stood on legs a few centimetres off the carpet, just like today's modern heaters with thermostats, which constantly bother us with harsh temperature changes in the room by their automatic switching on and off. Therefore, I am looking for a heater that has no thermostat. Does such a heater exist nowadays? If so, please provide a link. Thanks. P.S.: 3000w Edited January 25 by london8
MJNewton Posted January 25 Posted January 25 I think multiple heaters is your best bet, and will give several other benefits besides.
SteamyTea Posted January 25 Posted January 25 https://www.amazon.co.uk/Daewoo-Ceramic-Settings-Portable-Indicator/dp/B0CNKJPY7Z
london8 Posted January 25 Author Posted January 25 (edited) P.S.: Multiple heaters do not solve the problem of sudden temperature changes caused by the thermostat's primitive on-and-off heating style. Using multiple heaters in a room would only mitigate the problem, as it is not possible to ensure that all of them will remain constantly on.. P.S.: This happens in any room in any house with any heater that has a thermostat, more or less. I cannot make any modifications to the room. The apartment is not mine. I just want a simple thing: to buy a heater that does not have a thermostat, see details below: The core issue is that thermostats automatically change and cause shockingly unpleasant temperature changes in the room by harshly turning the heating on and off (cold/warm/cold/warm/cold/warm, etc.). Unlike my grandmother's old type of heater, which had no thermostat and therefore provided wonderfully cosy continuous warmth at a constant temperature, depending on how it was manually set before turning it on from a selection of about three power wattage options. Some heaters even had about ten manual power wattage settings or a vast number of power wattage settings by turning a control knob to any position. Of course, my grandmother's old type of heater had a thermal cut-off to prevent overheating. This was not a thermostat, which it did not have, but merely a thermal cut-off. My grandmother had the heater on continuously every winter, autumn, and spring. Usually, the heater would turn off by itself about twice a winter due to overheating. When this happened, you had to wait until it completely cooled down for an hour or two and then manually turn the heater back on. Naturally, every such old type of heater was designed to stand on a carpet without any fire hazards. It stood on legs a few centimetres off the carpet, just like today's modern heaters with thermostats, which constantly bother us with harsh temperature changes in the room by their automatic switching on and off. Therefore, I am looking for a heater that has no thermostat. Does such a heater exist nowadays? If so, please provide a link. Thanks. P.S.: 3000w Edited January 25 by london8
SteamyTea Posted January 25 Posted January 25 2 minutes ago, london8 said: The core issue is that thermostats automatically change and cause shockingly unpleasant temperature changes in the room by harshly turning the heating on and off (cold/warm/cold/warm/cold/warm, etc. Does this room have a lot of glazing, draughts and thermally poor walls, floor and ceilings?
JohnMo Posted January 25 Posted January 25 I would invest in some insulation, then the room wouldn't go cold when a thermostat switches on off. Or are you trying to heat a warehouse with a single heater? Last house managed to heat my garage with a single electric heater, it was fine.
MJNewton Posted January 25 Posted January 25 (edited) (Removed wrong link) Edited January 25 by MJNewton
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