![]() ![]() I also have the fridge, router, PC and a few lights on the UPS (I have those circuits on a load panel/transfer switch) and with 8 100ah batteries it can run those emergency loads for probably 10-12 hours. At idle it draws about 100 watts for a circ pump and controls. My homes in floor heat draws about 300 watts when running (pumps, boiler, controls, etc.) and peaks at 900 watts for a few seconds when the ignitor lights. I use a decommissioned server UPS (120v 3000kva) with some large AGM batteries to keep my propane boiler running during outages. If outages are days long, the genny is your best choice. The main requirement is that it kicks in automatically if I'm here I don't even need it, I just burn wood. Between the house being good at holding heat and a few extra days of heat pumping this should help. This is Alaska the power company bends over backwards to restore power as soon as humanly possible which in the middle of winter that can still be a few days. Looking at the wall mounted natural gas boiler it doesn't show an electric label with the amp draw, I imagine one of the first steps would be to calculate how much power it and the three water pumps in the system are drawing.īasically a few days of backup power ought to be enough. Has anybody done a DIY battery backup that automatically kicks in when power goes down? There are many videos on building battery banks, mostly for solar charging, but in this case I would not mind having it charge from the grid. It took a few $ks to fix that mess and that was only the plumbing with me doing the drywall. By the time power came back pipes froze, broke, and water works ensued. Last year I came back from my winter family vacation to find out there was a power outage in the middle of a windstorm.
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