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Heat Sealed combustion 92% AFUE gas boiler

boiler in conditioned basement

Cooling 14+ SEER split system in conditioned space

DHW 0.82 EF side-arm storage tank

Ducts R-4.2 flex runouts in dropped ceiling or in floor joists

Leakage none to outside (5% or less)

Ventilation Fan Cycler Supply-only system integrated with AHU

33% Duty Cycle: 10 minutes on; 20 minutes off

60-80 CFM continuous average flow

Return Pathways Transfer grilles/jump ducts at bedrooms

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Heating 60% AFUE for the old boiler -gas -delivered by radiators Cooling 9 EER for the window units

DHW 0.4 EF for hot water efficiency- AVERAGE summer efficiency is much worse winter efficiency would be about at 60% (since the boiler is heating the house already)

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