[Equest-users] District Heating / System Type

[Hall, Brendan]

Long time listener, first time caller. I have a gray area in what system I should be using for my baseline and wanted to poll the general consensus. I have a building addition where my proposed system is electric heat pumps with supplemental heat from a natural gas boiler for when it is real cold / peak heating load. My first thought is that it should be a fossil / hybrid system (Sys 5). However this boiler that I am using as a backup is the primary heat for the existing building, and is across the LEED boundary. If I use option 1 of the district heating guidelines it says I should treat this heat from the boiler as purchased heat. If I do that do I need to change my baseline system to electric only heat? Thanks.

Brendan Hall, M.Sc., LEED AP BD+C
Engineer, Mechanical
karpinski
ENGINEERING

3135 Euclid Avenue
Cleveland, OH  44115
P  216.391.3700 x 3111
E   bhall at karpinskieng.com<mailto:bhall at karpinskieng.com>
W www.karpinskieng.com<http://www.karpinskieng.com/>

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