[Greenbuilding] boilers

[dee mahan]

We're thinking about getting a new gas boiler to replace our very old 
HydroTherm that was here when we got the house 1 year ago. (operating 
efficiencyestimated - depending on plumber who's doing the estimating - at 
55 to 75% efficiency). We are getting quotes of about $5,000 to get & 
install a new boiler rated at about 85% efficiency - for the high efficiency 
boilers, we are getting quotes of about $10,000. Is the high efficiency 
really worth the extra costs (from both financial and environmental 
perspective)?

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