[Bldg-sim] Regulated vs. Unregulated Energy in Appendix G

[Michael Shannon]

I would have thought the Section 6 boiler minimum efficiency applies to any snowmelt boiler. But I guess melting snow is outside of the scope of Section 6 since it's not, "serving the heating, cooling, ventilation, or refrigeration needs of new buildings."  Fair point!

Michael Shannon, PE, LEED AP BD+C
Senior Building Performance Engineer


From: Bill Bishop <William.J.Bishop at imegcorp.com>
Sent: Thursday, August 7, 2025 1:23 PM
To: Michael Shannon <mshannon at epinc.com>; BLDG SIM <bldg-sim at lists.onebuilding.org>
Subject: RE: Regulated vs. Unregulated Energy in Appendix G

Hi Michael,

I agree with your assessment per the table you shared, based on 90.1-2016 and -2019. I don't know if the newest versions have added or clarified requirements.

Your list reminds me of another specific load - snow melt. There are controls requirements for freeze protection and snow melt systems per 90.1-2016 and -2019, 6.4.3.7, but there are no heating efficiency requirements.

Thanks,
~Bill

William Bishop, PE, CEM, LEED AP, ASHRAE (BEMP, BEAP, CDP)
Associate Principal | Project Executive | Sustainability & Energy
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From: Bldg-sim <bldg-sim-bounces at lists.onebuilding.org<mailto:bldg-sim-bounces at lists.onebuilding.org>> On Behalf Of Michael Shannon via Bldg-sim
Sent: Thursday, August 7, 2025 12:40 PM
To: BLDG SIM <bldg-sim at lists.onebuilding.org<mailto:bldg-sim at lists.onebuilding.org>>
Subject: [Bldg-sim] Regulated vs. Unregulated Energy in Appendix G

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BLDG-SIM!

I'm trying to sort out some atypical loads and whether they should be treated as Regulated vs. Unregulated. Since this drives the PCI_t for the project, it's pretty critical where each of these falls.

Load Type
Regulated or Unregulated?
Indoor Pool Heating
Regulated
Outdoor Pool Heating
Regulated
Spa Pool (110F) Heating
Regulated
Indoor Pool Pumps
Unregulated
Outdoor Pool Pumps
Unregulated
Spa Pool Pumps
Unregulated
Exterior Sports Court Lighting
Unregulated
Exterior Parking and Building Lighting
Regulated
Dryer Exhaust Fans
Regulated

Thoughts? Pool pumps have time switch control requirements, except in the case where public health standards require 24-hour pump operation, which is the case here.

Any insight is appreciated!

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Michael Shannon, PE, LEED AP BD+C
Senior Building Performance Engineer

Emanuelson-Podas, Inc.
7705 Bush Lake Road
Edina, MN 55439
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