Fdit PTC Car Fan Air Heater for Small Room Space (12V 100W)

It's a simple heating element. I use this element as the main piece in a heater unit to keep my 3D printer at a constant, elevated temperature at about 33C. For this purpose it has worked very well and I have gained a great deal of trust/confidence in the unit. My duty cycle is about 20 seconds on and maybe a minute or two off when it is just maintaining temperature, so it does not get run too hard. It has been reliable and still working well after being in operation for a few months now.

For those of your looking for a DC load for your battery work, this is great. It drains a 12S NiMH 6.5 AH battery in about 20 minutes, which helps with balancing the cells.The heater is weak, unless you're very close to it, but I bought it for a DC load.

So I ordered a 60mm 150w version of this from another seller and expected it to peak at maybe 75w given the reports of this one peaking at 50w. It ended up pulling 194w before I shut it off - about 10 seconds in to operation. No good.So this one arrived later that same day (today) and I did the same test. Ran it for 20 minutes and never saw above 68w draw - which includes losses going from 120v AC to 12v DC via a power brick.Good enough for me even if not 100w. I installed in my project and let the thermostat do its thing. The fan on this unit is acceptable to be able to hold your hand an inch away from the output, if it were half the speed it'd move less air over the aluminum fins and be warmer. So that's OK and I was excited to give it a test.What I found is that it heated my project (ammo can) +4 degrees in about 5 minutes. Absolutely perfect. Then I checked how much power it was consuming (this time via calibrated shunt, zero AC->DC losses) and it was at 94w.It must be a voltage thing. The power brick is a constant 12.22v output and the battery inside my ammo can is 13.6.So perhaps expect less heat / watt draw at lower voltages - and rated wattages at 13.6+More testing to be done before project gets implemented.

This 100 watt heater draws 4 amps at 12 volts. That's 48 watts. I am using it to heat the inside of a DLP printer kept in a 50 degree room to 75 degrees. It can do it ... barely. If you're really nice and say please. I gave it a second star because it does actually heat.I also have the 150 watt version. That one clocks in at 10 amps - 120 watts. That one's close enough to spec for me to give it an OK. UPDATE: This one's fan crapped out after 8 hours of use. Cannot recommend.

Not sure why...mine is wired for 12v and should be 100W but only pulls 4A at 12V which puts it more like 50W.....maybe I got a 24V unit but I assume that would have the same elements but wired in series not parallel as mine was. So pretty nice unit but I calculated my heat vs loss as needing about 100W as a result it can't quite achieve the temperature I want but with time it can get close...but this means it runs non stop just to keep up..I would have preferred a little leeway.

I bought this to use as a very low heat (26°c) for a very small reain 3d printer chamber. This heater is very small and requires the purchase of a controller board and a 12v 10A power supply, which brings the total up to about $50 for such a small, simple task. I feel this little heater is probably worth about $10, but the market use for resin printers is driving the cost up to $20. Not thrilled with the price point.

Great little heater! I was surprised by the amount of instant heat this provided on 12v.As long as you know what this is and aren't trying to heat a room or something inappropriate for a 100w heater, if you need a small heater for an enclose: this is a great deal! I hooked it up to a temp switch to take the edge off the freeze for my enclosed camper waste tanks.

It draws some energy put in as emergency supplement heat in rv