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.

It works for what I needed it for. It's not a lot of heat but I needed something to keep my water pump in my camper from freezing, 12 volt and max 10 amp (My pump is mounted outside the camper in a compartment). Compartment is approx. 3'x2'x2' and does the trick. I even attached a thermostat. Cost about $60.00 when all done and took some work but I'm happy with it. It was 14 degrees out this morning and in 100 minutes in heated it up to 34 degrees. If it was left on it would easily stay above freezing and I'm guessing would get up to about 50 degrees. Bought two and made a spare in a box without thermostat if needed. Just added cigarette plugs to each and added a receptacle to accept them in the box, wired staright to batteries. Good luck

The product is too small for most usages.

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.

I measure 2 1/4" square but that is just what I need under the drivers side dash. (no room for a hose now with gauges I installed.) Good for a bit of thawing before the car warms up. It does ok for its size but it is very small so it will not warm the whole car. It is quality made.

My tests showed about 65w did not produce much heat but in certain applications a little heater like this could be handy to keep things from freezing in small places.

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.