SEER for boilers

adrien26 · Posts: 20

Hi Andrew,

I understand that we can use the ratio input/output for chiller systems.
However for heating boilers, no guidance is given when the SEER is impossible to calculate. From our experience, about 80% of the time, boiler part load gross efficiency is not available and therefore we have to input the default value being 65% or 81% depending on the age of the boiler.
We usually have access to boilers test report giving indication on the gross efficiency which is usually closer from the seasonal efficiency than the default value (especially when the default is 60%).
If gross efficiency could be used it would get some our building jump from one band to the other as heating can be the most important parameter for office type of building.

Could you please let me know if gross efficiencies can be used when SEER not available?

Best regards,

Adrien Strzyzewski

Green Energy Partners Ltd

less · Posts: 36 Location: Birmingham, UK

Adrien
Please see post HVAC and DHW
Regards
Andrew Bairstow
DesignBuilder Support

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