Baseline System 5 or 6 for LEED? DOAS heat pump with gas furnace aux heat

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Good morning,

I am working on a project that is using Dedicated Outdoor Air Systems for
ventilation.
These units are designed to supply neutral (~70-75F) temperature air to the
building.
Heating is provided by heat pumps, but they have auxiliary natural gas
heating to supplement the heat pump heating.

Would my heating fuel be considered "Hybrid" in this case or can I consider
it "electric"? This is for a LEED project, so I am hoping someone has
experience with this type of system for LEED.

Thank you,

mcamp1206's picture
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Joined: 2015-04-07
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If you have gas as supplement, you fall into the ?Hybrid? category.

As a side note, be careful when selecting natural gas as supplement in eQUEST as I don?t really why, but from my personal experience the supplement energy does not show up in the BEPS report (or anywhere else) when you select natural gas as supplement heat.

[Bouthillette Parizeau]

Patrick Lapierre_ing. BEMP
plapierre at bpa.ca | t: 5143833747x2807

De : Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] De la part de Michael Campbell via Equest-users
Envoy? : 24 janvier 2018 09:35
? : equest-users
Objet : [Equest-users] Baseline System 5 or 6 for LEED? DOAS heat pump with gas furnace aux heat

Good morning,
I am working on a project that is using Dedicated Outdoor Air Systems for ventilation.
These units are designed to supply neutral (~70-75F) temperature air to the building.
Heating is provided by heat pumps, but they have auxiliary natural gas heating to supplement the heat pump heating.
Would my heating fuel be considered "Hybrid" in this case or can I consider it "electric"? This is for a LEED project, so I am hoping someone has experience with this type of system for LEED.
Thank you,

Patrick Lapierre's picture
Joined: 2015-01-28
Reputation: 0