Rules 9-4 and 9-6 Building Appliances

Learn about the Air District's process for amending Regulation 9, Rules 4 and 6 to reduce emissions of nitrogen oxides from residential and commercial furnaces and water heaters in buildings in the Bay Area.

Find out about the status and anticipated timeline of the rule development process. Information on hearings, workshops, and other events is provided below, along with supporting documents and materials.

Air District staff is currently evaluating potential amendments to two rules: Rule 9-4: Nitrogen Oxides from Fan Type Residential Central Furnaces and Rule 9-6: Nitrogen Oxides Emissions from Natural Gas-Fired Boilers and Water Heaters. These rules govern point of sale emission standards for small, typically residential and commercial, water and space heating systems. Emissions of nitrogen oxides impact local and regional air quality and contribute to the formation of ozone and secondary particulate matter. 

The Air District hosted a public workshop on October 7, 2021 to discuss initial outcomes from the Building Appliance Stakeholder Working Group and first draft language of regulatory amendments. Recordings of the public workshop and subsequent updates to the Stationary Source and Climate Impacts Committee, as well as supporting documents, can be found under the 'Hearings, Workshops and Other Events' and 'Documents' sections below.

In May of 2022, the Air District released a Notice of Preparation (NOP) of an Environmental Impact Report (EIR) and an Initial Study, as well as revised draft rule amendments. Note that the amendments to Rule 9-4 include updates to clarify definitions and applicability, while the amendments to Rule 9-6 are the same as the version previously released.

Staff will conduct a public scoping meeting to inform the public about the project and to provide agencies and the public with an opportunity to provide comments on the scope and content of the EIR. The public scoping meeting will be held virtually on June 9th, 2022, from 6:00-8:00 PM. Find the link and other information on how to join in the 'Hearings, Workshops and Other Events' table below. 

Written and/or email comments on the Initial Study and revised draft amendments must be received by 5:00 PM on June 21, 2022 and may be submitted to:

Jennifer Elwell
Bay Area Air Quality Management District
375 Beale Street, Suite 600
San Francisco, CA 94105

Or by email to

 Rule #Rule NameExpected Hearing Datetable-mobile-only-column
Regulation 9, Rule 4Nitrogen Oxides from Fan Type Residential Central Furnaces 2021 Amendment (Under Development)4th Quarter 2022
Regulation 9, Rule 4
Expected Hearing Date:
4th Quarter 2022
Rule Status:
Under Amendment
Air District Staff Contact:
  • Jennifer Elwell
  • Senior Air Quality Engineer, Community Engagement and Policy
  • 415.749.8732
Comments Due:
6/21/2022
Description:
This rule limits emissions of nitrogen oxides from natural gas-fired fan type residential central furnaces.
 

Comments Due

6/21/2022

Rule Status

Under Amendment

Air District Staff Contact

  • Jennifer Elwell
  • Senior Air Quality Engineer, Community Engagement and Policy
  • 415.749.8732

Description

This rule limits emissions of nitrogen oxides from natural gas-fired fan type residential central furnaces.



 Rule #Rule NameExpected Hearing Datetable-mobile-only-column
Regulation 9, Rule 6Nitrogen Oxides Emissions from Natural Gas-Fired Water Heaters 2021 Amendment (Under Development)4th Quarter 2022
Regulation 9, Rule 6
Expected Hearing Date:
4th Quarter 2022
Rule Status:
Under Amendment
Air District Staff Contact:
  • Jennifer Elwell
  • Senior Air Quality Engineer, Community Engagement and Policy
  • 415.749.8732
Comments Due:
6/21/2022
Description:
This rule limits the emissions of nitrogen oxides from natural gas-fired water heaters and boilers.
 

Comments Due

6/21/2022

Rule Status

Under Amendment

Air District Staff Contact

  • Jennifer Elwell
  • Senior Air Quality Engineer, Community Engagement and Policy
  • 415.749.8732

Description

This rule limits the emissions of nitrogen oxides from natural gas-fired water heaters and boilers.

Hearings, Workshops and Other Events

Throughout the rule development process, we provide information on upcoming and past workshops, hearings, and other events.

 DateEventAgendatable-mobile-only-column
6/9/2022Scoping Meeting - EIR for Amendments to Rules 9-4 and 9-6CEQA Scoping Meeting Presentation - Rules 9-4 and 9-6
 
6/9/2022
Event:
Scoping Meeting - EIR for Amendments to Rules 9-4 and 9-6
Date & Time:
Thursday, June 9
6:00 PM - 8:00 PM
add to your calendar
View Full Calendar
Status:
Scheduled
Location:
N/A
Watch/Listen:
Agenda:
CEQA Scoping Meeting Presentation - Rules 9-4 and 9-6
:
Other Documents:
N/A
Event Contact:
  • Jennifer Elwell
  • Senior Air Quality Engineer, Community Engagement and Policy
  • 415.749.8732
Event Description:

 

Date & Time

Thursday, June 9
6:00 PM - 8:00 PM
add to your calendar
View Full Calendar

Status

Scheduled

Location

N/A

Watch/Listen

Event Description


Other Documents

N/A

Event Contact

  • Jennifer Elwell
  • Senior Air Quality Engineer, Community Engagement and Policy
  • 415.749.8732
4/18/2022Stationary Source & Climate Impacts CommitteeCommittee Agenda


Committee Agenda


Errata and Revised Agenda


Committee Presentations
 
4/18/2022
Event:
Stationary Source & Climate Impacts Committee
Date & Time:
Monday, April 18
9:00 AM - 5:00 PM
add to your calendar
View Full Calendar
Status:
Scheduled
Location:
Web Stream Only
Watch/Listen:
Watch/Listen
Watch video with closed captioning and agenda
Listen to streaming MP3
Agenda:
Committee Agenda


Committee Agenda


Errata and Revised Agenda


Committee Presentations
:
Other Documents:
Committee Minutes
Event Contact:
N/A
Event Description:
N/A
 

Date & Time

Monday, April 18
9:00 AM - 5:00 PM
add to your calendar
View Full Calendar

Status

Scheduled

Location

Web Stream Only

Watch/Listen

Watch/Listen
Watch video with closed captioning and agenda
Listen to streaming MP3

Event Description

N/A

Other Documents

Committee Minutes

Event Contact

N/A

11/15/2021Stationary Source & Climate Impacts CommitteeCommittee Agenda


Committee Presentations
 
11/15/2021
Event:
Stationary Source & Climate Impacts Committee
Date & Time:
Monday, November 15
9:00 AM - 5:00 PM
add to your calendar
View Full Calendar
Status:
Scheduled
Location:
Web Stream Only
Watch/Listen:
Watch/Listen
Watch video with closed captioning and agenda
Listen to streaming MP3
Agenda:
Committee Agenda


Committee Presentations
:
Other Documents:
Committee Minutes
Event Contact:
N/A
Event Description:
N/A
 

Date & Time

Monday, November 15
9:00 AM - 5:00 PM
add to your calendar
View Full Calendar

Status

Scheduled

Location

Web Stream Only

Watch/Listen

Watch/Listen
Watch video with closed captioning and agenda
Listen to streaming MP3

Event Description

N/A

Other Documents

Committee Minutes

Event Contact

N/A

10/18/2021Stationary Source & Climate Impacts CommitteeCommittee Agenda


Committee Presentations
 
10/18/2021
Event:
Stationary Source & Climate Impacts Committee
Date & Time:
Monday, October 18
9:00 AM - 5:00 PM
add to your calendar
View Full Calendar
Status:
Scheduled
Location:
Web Stream Only
Watch/Listen:
Watch/Listen
Watch video with closed captioning and agenda
Listen to streaming MP3
Agenda:
Committee Agenda


Committee Presentations
:
Other Documents:
Committee Minutes
Event Contact:
N/A
Event Description:
N/A
 

Date & Time

Monday, October 18
9:00 AM - 5:00 PM
add to your calendar
View Full Calendar

Status

Scheduled

Location

Web Stream Only

Watch/Listen

Watch/Listen
Watch video with closed captioning and agenda
Listen to streaming MP3

Event Description

N/A

Other Documents

Committee Minutes

Event Contact

N/A

10/7/2021Virtual Public Workshop on Draft Amendments to Regulation 9, Rules 4 and 6 (Building Appliances)Agenda - Public Workshop on Draft Amendments for Building Appliance Rules 9-4 and 9-6


Presentation - Public Workshop on Draft Amendments for Building Appliance Rules 9-4 and 9-6
 
10/7/2021
Event:
Virtual Public Workshop on Draft Amendments to Regulation 9, Rules 4 and 6 (Building Appliances)
Date & Time:
Thursday, October 7
6:00 PM - 8:00 PM
add to your calendar
View Full Calendar
Status:
Scheduled
Location:
Web Stream Only
Watch/Listen:
:
Other Documents:
N/A
Event Contact:
  • Jennifer Elwell
  • Senior Air Quality Engineer, Community Engagement and Policy
  • 415.749.8732
Event Description:
Air District staff will present draft amendments to Rule 9-4 and Rule 9-6 that are intended to decrease emissions of nitrogen oxides (NOX) from building appliances. The workshop will serve as a forum for workshop participants to provide feedback and comments on the draft rule amendments and workshop report.
 

Date & Time

Thursday, October 7
6:00 PM - 8:00 PM
add to your calendar
View Full Calendar

Status

Scheduled

Location

Web Stream Only

Watch/Listen

Event Description

Air District staff will present draft amendments to Rule 9-4 and Rule 9-6 that are intended to decrease emissions of nitrogen oxides (NOX) from building appliances. The workshop will serve as a forum for workshop participants to provide feedback and comments on the draft rule amendments and workshop report.

Other Documents

N/A

Event Contact

  • Jennifer Elwell
  • Senior Air Quality Engineer, Community Engagement and Policy
  • 415.749.8732
4/19/2021Stationary Source & Climate Impacts Committee MeetingCommittee Agenda


Committee Presentations
 
4/19/2021
Event:
Stationary Source & Climate Impacts Committee Meeting
Date & Time:
Monday, April 19
9:00 AM - 5:00 PM
add to your calendar
View Full Calendar
Status:
Scheduled
Location:
Web Stream Only
Watch/Listen:
Watch/Listen
Watch video with closed captioning and agenda
Listen to streaming MP3
Agenda:
Committee Agenda


Committee Presentations
:
Other Documents:
Committee Minutes
Event Contact:
N/A
Event Description:
N/A
 

Date & Time

Monday, April 19
9:00 AM - 5:00 PM
add to your calendar
View Full Calendar

Status

Scheduled

Location

Web Stream Only

Watch/Listen

Watch/Listen
Watch video with closed captioning and agenda
Listen to streaming MP3

Event Description

N/A

Other Documents

Committee Minutes

Event Contact

N/A

11/19/2020Climate Protection Committee Meeting Committee Agenda


Committee Presentations
 
11/19/2020
Event:
Climate Protection Committee Meeting
Date & Time:
Thursday, November 19
9:30 AM - 5:00 PM
add to your calendar
View Full Calendar
Status:
Scheduled
Location:
Web Stream Only
Watch/Listen:
Watch/Listen
Watch video with closed captioning and agenda
Listen to streaming MP3
Agenda:
Committee Agenda


Committee Presentations
:
Other Documents:
Committee Minutes
Event Contact:
N/A
Event Description:
N/A
 

Date & Time

Thursday, November 19
9:30 AM - 5:00 PM
add to your calendar
View Full Calendar

Status

Scheduled

Location

Web Stream Only

Watch/Listen

Watch/Listen
Watch video with closed captioning and agenda
Listen to streaming MP3

Event Description

N/A

Other Documents

Committee Minutes

Event Contact

N/A

Documents

Supporting materials, such as staff reports, regulatory language, and other technical documents related to rule development, are posted throughout the development process.

DocumentTypetable-mobile-only-column
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CEQA Scoping Meeting Presentation - Rules 9-4 and 9-6
Technical Support Documents 
CEQA Scoping Meeting Presentation - Rules 9-4 and 9-6
Type:
Technical Support Documents
:
Request for Comments
Regulatory Documents 
Request for Comments
Type:
Regulatory Documents
:
Notice of Preparation of an Environmental Impact Report and Notice of Public Scoping Meeting for the Proposed Amendments to Rules 9-4 and 9-6
Regulatory Documents 
CEQA Initial Study for the Proposed Amendments to Rules 9-4 and 9-6
Regulatory Documents 
Type:
Regulatory Documents
:
Draft Amendments to Rule 9-4 (Revised)
Regulatory Documents 
Draft Amendments to Rule 9-4 (Revised)
Type:
Regulatory Documents
:

Comments

The Air District provides opportunities for the public to submit comments throughout the development process, and posts comments received during the open public comment periods.

Comments DocumentTypetable-mobile-only-column
350 Bay Area et al
Organization 
350 Bay Area et al
Type:
Organization
:
Libby Schaaf et al
Individual 
Libby Schaaf et al
Type:
Individual
:
Rebekah Collins
Individual 
Rebekah Collins
Type:
Individual
:
Building Decarbonization Coalition et al
Organization 
Building Decarbonization Coalition et al
Type:
Organization
:
Plumbing Heating Cooling Contractors Association
Organization 
Plumbing Heating Cooling Contractors Association
Type:
Organization
:
RF McDonald Co
Organization 
RF McDonald Co
Type:
Organization
:
Rheem
Organization 
Rheem
Type:
Organization
:
Stop Waste
Organization 
Stop Waste
Type:
Organization
:
Tom Kabat
Individual 
Tom Kabat
Type:
Individual
:
Josie Gaillard
Individual 
Josie Gaillard
Type:
Individual
:
Richard Gray
Individual 
Richard Gray
Type:
Individual
:
Chris Guslani
Individual 
Chris Guslani
Type:
Individual
:
Tom Alkire
Individual 
Tom Alkire
Type:
Individual
:
Rob Jacobs
Individual 
Rob Jacobs
Type:
Individual
:
East Bay Community Energy
Organization 
East Bay Community Energy
Type:
Organization
:
Anthony Achermann
Individual 
Anthony Achermann
Type:
Individual
:
Air Conditioning Heating and Refrigeration Institute
Organization 
Air Conditioning Heating and Refrigeration Institute
Type:
Organization
:
Bradford White
Individual 
Bradford White
Type:
Individual
:
Bruce Naegel
Individual 
Bruce Naegel
Type:
Individual
:
Carrier
Organization 
Carrier
Type:
Organization
:
Dan Bonetti
Individual 
Dan Bonetti
Type:
Individual
:
David Moller
Individual 
David Moller
Type:
Individual
:
Goodman
Individual 
Goodman
Type:
Individual
:
Lawrence Livermore National Laboratory
Organization 
Lawrence Livermore National Laboratory
Type:
Organization
:
Navien
Organization 
Navien
Type:
Organization
:
PG&E
Organization 
PG&E
Type:
Organization
:

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Last Updated: 1/21/2022