Author Topic: Boiler efficiency  (Read 133 times)

Offline bster352

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Boiler efficiency
« on: April 16, 2018, 11:22:15 AM »
Is there a minimum efficiency for boilers that are being retrofitted?

Offline Admin

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Re: Boiler efficiency
« Reply #1 on: April 16, 2018, 03:37:44 PM »
I don't think there are rules on replacement boilers.  In new construction it depends on which SB-12 Compliance Package the builder chooses.  For example Package A1 requires space heating equipment with an AFUE of at least 96% and a water heater with at least a 0.8 Energy Factor.  So I assume the boiler would need to have an EF of 0.8.

Offline bster352

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Re: Boiler efficiency
« Reply #2 on: April 17, 2018, 09:10:56 AM »
Check out pages 13 and 21 of the attached guide. Looks like 83% on commercial replacements.