Swapping out a Conventional Boiler for a Modulating Condensing Boiler
Starting to plan for an install of a modulating condensing boiler in the offseason later this year. Currently, we have an older-than 25-year McLain Weil boiler with the pilot light turned up too high (if it’s normal, it blows out we learned after our first service call).
Our basement tends to be in the 50s in the winter, often mid to upper 50s (zone 4a; rare for the temperature to stay below freezing all day), and warms up by 2 degrees when the boiler is firing (which is not that much of the time to keep the house at 68). Will we need to add any heat source to the basement to keep pipes from freezing when we go to a modulating condensing boiler? Basement is unfinished, but does have washer, dryer and utility sink in addition to hot water heater & boiler.
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