I've used a cheap fan heater in a tent before with no problems, the best electric heaters are the ones with a built in safety switch for if they are knocked over.

As for whether it will trip out the EHU it depends on the EHU supply.  Most campsites I've been too have either been 6A or 10A.  The way to work out what the maximum power draw you can take is P=IV (Power = Current x Voltage)

Using 240v 10A supply as an example:

Max Power draw = 10 x 240 = 2400W

However I would always factor in some margin for error just to be on the safe side.  I would advise a heater with a maximum power rating of 2000W preferably with a switchable setting say between 1000W and 2000W that way you can get away with using on it's lowest setting on a 6A supply. 

Always remember that you need to keep track of the power rating of all the appliances you have plugged in.

As said above, we've used our fan heater on 1Kw with no problems. (We use a 1.6Kw George Foreman grill on Caravan Club sites and that's been fine.)

The only thought is that fan heaters tend to be noisy at night. A lot of people use those halogen heaters, but I reckon they give off too much light. I'm thinking of getting a small oil filled radiator heater for cold nights.

WATTS TO AMPS CONVERSION

60 Watts    =    0.26 Amp

100 Watts    =    0.43 Amp

200 Watts    =    0.87 Amp

300 Watts    =    1.30 Amp

400 Watts    =    1.74 Amp

500 Watts    =    2.17 Amp

600 Watts    =    2.61 Amp

700 Watts    =    3.04 Amp

800 Watts    =    3.48 Amp

900 Watts    =    3.91 Amp

1000 Watts    =    4.35 Amp

1100 Watts    =    4.78 Amp

1200 Watts    =    5.22 Amp

1300 Watts    =    5.65 Amp

1400 Watts    =    6.09 Amp

1500 Watts    =    6.52 Amp

1600 Watts    =    6.96 Amp

1700 Watts    =    7.39 Amp

1800 Watts    =    7.83 Amp

1900 Watts    =    8.26 Amp

2000 Watts    =    8.70 Amp

2100 Watts    =    9.13 Amp

2200 Watts    =    9.57 Amp

2300 Watts    =    10.00 Amp

2400 Watts    =    10.43 Amp

2500 Watts    =    10.87 Amp

2600 Watts    =   11.30 Amp

2700 Watts    =   11.74 Amp

2800 Watts    =    12.17Amp

2900 Watts    =   12.61 Amp

3000 Watts    =    13.04 Amp

3100 Watts    =    13.48 Amp

3200 Watts    =    13.91 Amp

3300 Watts    =    14.35 Amp

3400 Watts    =    14.78 Amp

Quote: Originally posted by suns on 09/6/2010

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We have the cheep Argos thermostated jobby, does the trick and use it easter and october camping.

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Quote: Originally posted by Grad Sailor on 09/6/2010

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The only thought is that fan heaters tend to be noisy at night. A lot of people use those halogen heaters, but I reckon they give off too much light. I'm thinking of getting a small oil filled radiator heater for cold nights.

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I took an oil-filled radiator with us last week. Brilliant. No noise, and more than warm enough at night. In fact had to turn it down a bit during the night, as we were too hot, lol :)

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Quote: Originally posted by Grad Sailor on 09/6/2010

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As said above, we've used our fan heater on 1Kw with no problems. (We use a 1.6Kw George Foreman grill on Caravan Club sites and that's been fine.)

The only thought is that fan heaters tend to be noisy at night. A lot of people use those halogen heaters, but I reckon they give off too much light. I'm thinking of getting a small oil filled radiator heater for cold nights.

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For the first time we took a fan heater on the spur of the moment at May BH, whne it got cold agin, and I had the space witht he trailer. It was just the one we use in the greenhouse

We di use it and it was useful, esp in the early evening when the kids were sitting around and chatting playing before bed time.

Noise wouldn't bo0ther me though as we didn't have it on once in bed.  We are plenty warm enough in our sleeping bags anyway.