[jo5hm4n]

So last night i put the radiator in the van with duvets to cover hose reels, started at 10am today as it was -1, and did okay, managed to do a full days work!

Had a thought today though.  My RO is a 450GPD mounted onto my 1000L IBC located in my garage, do i need to worry about the RO freezing and being damaged?  Never thought about this before until today.  Wondering if maybe i need to get another radiator, one for the van and one for the garage to protect the RO incase it freezes overnight.

[Dave Willis]

Yes, if your RO freezes it's going to cost you a few hundred in lost work and replacement. Cover it up or build a box for it if you have a cold garage.

[sunshine windows]

If it's an integral garage I wouldn't worry, as it'll stay warm enough in there anyway.

[richard groves]

Buy a room thermometer, only a couple of quid , you'll soon know whether you need to take further precautions.

[DaveG]

I've got a 120 watt tube heater under my ro, costs pennies to run. Never had a problem. Only use  it when minus temps are forecast.

[Michael Peterson]

run your ro constantly on -1 or lower