Outdoor wood boiler furnaces are sometimes inefficient because wood burning is wasteful if accurate thermostat switches are not used to drive water pumps, blowers and other devices. This video shows a few of the items explained in the BETTER-CHEAPER.COM PDF report for $10 to make outdoor wood boiler furnaces more cost effective. Just one tip of where to buy the two thermostat contactors will save $75 from the Granger cost.
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