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Draft hood retrofit on standing pilot appliances?
After reading that Minnesota report on tankless water heaters and considering the reports here of fuel savings with barometric damper retrofits, I'm thinking that applying these to existing tank style gas-fired water heaters might be able to demonstrate reasonable ROI while increasing occupant safety.
I'm planning to take one of Jim Davis' CO seminars next time he offers it in Phoenix, but am curious about the inclusion of spill switches on the MG-1 on standing pilot water heaters. How?