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16 messages
06/02/2014 at 11:34

I am thinking of getting a Parfin heater for my 8 x 6 greenhouse , so anybody got any advice?

Also I wondered about electric fan heater , I do not have a plug in the greenhouse so I would have to run a cable along the floor from my garage , which I'm not very keen on

06/02/2014 at 12:03

I use paraffin and it does keep it frost free but there can be issues of condensation. I would use a thermostatic electric fa heater if electricity was available i my GH but it is 20 metres away.

06/02/2014 at 13:54

When paraffin burns it creates a lot of condensation which I found exacerbates any rot or mould problems.  I find an electric fan heater on a thermostat is best, but the electricity has to be safely installed by a qualified electrician. A fan heater keeps the atmosphere more buoyant and  it doesn't have to be on all the time., and unless theres a power cut, it doesn't run out in the middle of a frosty night.

06/02/2014 at 16:32

I have a resonably sized generator and it operates a small radiator in my allotment GH which is 12by10 no problem at all.

06/02/2014 at 18:39

I converted to electricity as paraffin is now so pricey, smells and produces so much humidity. I now have a tubular heater attached to a frost buster which kicks in when the temperature drops to about 7. The electrician said it would use about as much as a 100 watt bulb.

06/02/2014 at 19:49

Artjak

Do you have a photo of your set up please also how long and what wattage is you heater and what size is your greenhouse

06/02/2014 at 20:38

Tubular heaters are low wattage and they are available with thermostatic control:

http://www.amazon.co.uk/tubular-heater/s?ie=UTF8&keywords=tubular%20heater&page=1&rh=i%3Aaps%2Ck%3Atubular%20heater

07/02/2014 at 08:31

Clueless, will take photo when it stops raining and post it

07/02/2014 at 12:36

thank you artjak

clueless

07/02/2014 at 14:03

http://s4.gardenersworld.com/uploads/images/original/37164.jpg?width=640&height=350&mode=max

 The electricity comes through the studio wall here

http://s4.gardenersworld.com/uploads/images/original/37165.jpg?width=480&height=350&mode=max

 travels down the wall inside the g/h here

http://s4.gardenersworld.com/uploads/images/original/37166.jpg?width=640&height=350&mode=max

 and has another wire leading to frost detector here not near the heater.

07/02/2014 at 14:04

I'll show you a better pic of heater

http://s4.gardenersworld.com/uploads/images/original/37167.jpg?width=480&height=350&mode=max

 

07/02/2014 at 14:09

This is for a g/h that is 6'x8'. I only had it installed in the Autumn and it has not been that cold yet, but I have a min and max thermometer (Amazon) which tells me how cold it gets at night and so far it has not dropped below 0, next year I think I will get some insulation on for the winter as well as the heater.

Hope this helps

If you have any more queries, I'm going out at 4.30 and will be seeing the electrician who installed it.

07/02/2014 at 18:34

That's very posh Artjak what length are your tube's ??

 

Clueless

 

08/02/2014 at 12:05

Clueless, the heating tube is 24" (61cm). I can't remember how much it all cost, but the electrician got it all at trade prices.

08/02/2014 at 13:19
artjak wrote (see)

The electrician said it would use about as much as a 100 watt bulb.

100W does not sound good enough. Most GH heaters tend to be 2KW. Sounds like you get away with it this year as it has barely got below 0C and that it is a lean to to a house, so gets extra temperatures, but I think if you have a 100W heater then when the temps fall below -5C then you will get frost in the GH.

08/02/2014 at 15:01

Blairs, it is a lean-to on the wall of my studio which is very rarely heated. The heater is actually120 watts and apparently is what was recommended by the electrical supply place for a 6x8 g/h. I too have my doubts, which is why, a stated above, I will be using insulation next winter

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16 messages