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Electric greenhouse heaters
On Mon, 08 Dec 2003 21:02:35 +0000, Troy wrote:
We had our first sub-zero temperatures last night and I was interested to see the performance of my new Parasene "Frost Shield" 2Kw fan heater. I only need frost protection for the greenhouse and so set it for just that - (should protect at temperatures of 5°C and lower). Very disappointed this morning to find that the greenhouse temperature had dropped to -1°C during the night. The heater had switched itself on and off a few times but the total on time was less than 2 hours. Took it back to B&Q today and got a new one. This one seems to be working the opposite way. It's a much warmer evening and it's (same settings) already been on for over 4 hours with the greenhouse temperature currently over 10°C. Any ideas? Suggestions for a more reliable heater? I really don't want to go back to paraffin :-( TIA. Dunno really, I've only used them where they're on all the time because the house is too big for them. All I can say is that on the ones I've seen the thermostats are usually very crude affairs and unlikely to be accurate to any better than a few degrees, so even with a good one you're going to need to monitor temperatures carefully for a while, preferably with several themometers placed in strategic places. Then mark the control at the position/s that give you the temperature range you need. The alternative is to wire in a decent thermostat but they cost more than your heater cost. Rod |
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