Heating 110V 500W Ceramic Air Heater HighAccuracyConstant Temperature Electric Heater for Machine and Humidifier

Nice PTC heating element for the price. The one I have will draw as much as 750W at one particular point in it's power curve, but at ideal operating conditions it is 500W. Fuse accordingly, and make sure your temp controller can handle the higher current.You do need to use these things correctly. There are a number of bad reviews here by folks who apparently don't know what a PTC heating element is.PTC stands for Positive Temperature Coefficient - the heater will draw less power as it's temperature increases, also known as a self regulating heater.You must have a fan or blower blowing through the element to get it's rated power. Natural convection is not enough. Without forced airflow, the element will not generate anywhere near it's rated power. Looks like this one requires at least 30cfm of room temp air to get the full 500 watts.This particular element has an over-temp device attached. If you don't have sufficient airflow, the over-temp device will turn it off. It won't turn back on until it cools down a bit, so no power at all during cool-down.PTC heaters work well for heating applications that require airflow, like space heaters, dehydrators, or filament dryers (when coupled with a thermostat). They are not the right choice for low airflow applications like ovens or tank heaters, or applications that require temps higher than around 250C/500F. This one is limited to 150c by the over-temp device and plastic end caps.This is just a heating element, not a complete heating unit. It will require a thermostat, blower, and enclosure at the very minimum. It has exposed electrical wiring, and will get hot enough to cause serious burns or fire if not properly used. Abused sufficiently and it will burn out or burn up. You will need to understand what you are doing to use it safely.

The unit I got works as advertised. It gets hot! The limit switch works. I'd say that the switch does kick in a little higher than 150 but these things are +/- 10% on a good day. Sorry I don't have anything but the back of my hand to measure it at the moment.So what about wattage? Amps drawn when my unit is @ ~73 F (cold) max out @ ~6.5 - 7.0A then, with two 60mm, 23 cfm, fans on it, stabilizes @ ~2.9A. PG&E is giving me 117V today. So that's about ~340 watts continuos. Note that it peaked @ ~820 watts.The fans are not just sitting on top of the unit at this point as I'm doing proof of concept mock ups.So to prove the point about temp and power being inverse I got out a hair dryer, put it on cool, an blew it on the element. I was able to get that to stabilize at ~4.2 A. - 4.2 X 117 = 491.4 watts.So is it a 500W unit? I'd say yes IF you have enough air flow. No matter, plenty hot enough for me.

Works as advertised. You have to move air through this or you won't get anywhere close to rated output.

I coupled this with a temp controller and made a printer enclosure this heats to 70c. together they work well.

After more than 2 hours this item did not raise the temperature of a 7.5 sqft container more than 5 degrees. I think I could probably use a lizard heat lamp for better results than that.

Easy wiring

Worked outstanding and is exactly what I needed for my project.

Utilisé pour fabriquer une mini plinthe de chauffage pour maison de chat, fonctionne très bien