San Francisco Mechanical Code 2022 - Air Conditioning Unit Location Requirements

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2022 San Francisco Mechanical
Code (SFMC) Air Conditioning Unit
Location Requirement
 
Mechanical Plan Review Section, SFDBI
August 8, 2022
 
Reasons for
Outdoor Air
Conditioning
Unit Location
Requirements
 
Outdoor condenser units can emit up to 82 dB, depending on the
models.
With the current All-Electric requirement for new construction
buildings (SFBC 106A.1.17)
https://codelibrary.amlegal.com/codes/san_francisco/latest/sf_buildin
g/0-0-0-92027
 , the number of buildings with split heat pump systems
has greatly increased.  Split heat pump systems have an outdoor
condenser component.
DBI has also seen an increase in the number of existing residential
buildings being provided with split heat pump systems due to heat
pump systems being highly efficient, providing both heating and
cooling, and having a reduced carbon footprint.
Until the recent code change, the most common space conditioning
system installed in San Francisco for residential dwelling units were
furnaces, which typically have no outdoor component.
The property line distance requirement, combined 
with
 the current
San Francisco Police Code Article 29: Regulation of Noise, is proposed
to help mitigate noise concerns from neighboring residents.
The proposed code
language to be
added to 2022
SFMC section 308.2
to address the
location of the
outdoor air
conditioning unit.
 
 
2022 CMC Section 308:
308.0 Improper Location.
308.1 General.  
Piping or equipment shall not be so located as to
interfere with the normal use thereof or with the normal operation
and use of windows, doors, or other required facilities.
 
 
Proposed 2022 SFMC 308.2:
308.2
 The outdoor Air Conditioning unit shall not be located less
than 5 feet from the property line. 
 
Refer to the 
San Francisco
Police Code Article 29: Regulation of Noise
 for the noise limits due
to the installation of an outdoor Air Conditioning unit.
https://codelibrary.amlegal.com/codes/san_francisco/latest/sf_polic
e/0-0-0-6461
 
Example of Other
Local Jurisdiction
Requirements:
City of Santa Clara
 
 
Example of
Other Local
Jurisdiction
Requirements:
City of Palo Alto
 
Example of
Other Local
Jurisdiction
Requirements:
City of Los Altos
 
 
Example of Other
Local Jurisdiction
Requirements:
City of Sunnyvale
 
 
San Francisco
Police Code
Article 29:
Regulation of
Noise
https://codelibrary.aml
egal.com/codes/san_fr
ancisco/latest/sf_police
/0-0-0-6461
 
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The 2022 San Francisco Mechanical Code outlines requirements for the location of outdoor air conditioning units to address noise concerns and ensure normal use of properties. The code update reflects the shift towards more energy-efficient split heat pump systems, emphasizing a 5 feet minimum distance from property lines. Explore how other local jurisdictions like Santa Clara, Palo Alto, Los Altos, and Sunnyvale set their own requirements.


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  1. 2022 San Francisco Mechanical Code (SFMC) Air Conditioning Unit Location Requirement Mechanical Plan Review Section, SFDBI August 8, 2022

  2. Outdoor condenser units can emit up to 82 dB, depending on the models. With the current All-Electric requirement for new construction buildings (SFBC 106A.1.17) https://codelibrary.amlegal.com/codes/san_francisco/latest/sf_buildin g/0-0-0-92027 , the number of buildings with split heat pump systems has greatly increased. Split heat pump systems have an outdoor condenser component. DBI has also seen an increase in the number of existing residential buildings being provided with split heat pump systems due to heat pump systems being highly efficient, providing both heating and cooling, and having a reduced carbon footprint. Until the recent code change, the most common space conditioning system installed in San Francisco for residential dwelling units were furnaces, which typically have no outdoor component. The property line distance requirement, combined with the current San Francisco Police Code Article 29: Regulation of Noise, is proposed to help mitigate noise concerns from neighboring residents. Reasons for Outdoor Air Conditioning Unit Location Requirements

  3. 2022 CMC Section 308: 308.0 Improper Location. 308.1 General. Piping or equipment shall not be so located as to interfere with the normal use thereof or with the normal operation and use of windows, doors, or other required facilities. The proposed code language to be added to 2022 SFMC section 308.2 to address the location of the outdoor air conditioning unit. Proposed 2022 SFMC 308.2: 308.2The outdoor Air Conditioning unit shall not be located less than 5 feet from the property line. Refer to the San Francisco Police Code Article 29: Regulation of Noise for the noise limits due to the installation of an outdoor Air Conditioning unit. https://codelibrary.amlegal.com/codes/san_francisco/latest/sf_polic e/0-0-0-6461

  4. Example of Other Local Jurisdiction Requirements: City of Santa Clara

  5. Example of Other Local Jurisdiction Requirements: City of Palo Alto

  6. Example of Other Local Jurisdiction Requirements: City of Los Altos

  7. Example of Other Local Jurisdiction Requirements: City of Sunnyvale

  8. San Francisco Police Code Article 29: Regulation of Noise https://codelibrary.aml egal.com/codes/san_fr ancisco/latest/sf_police /0-0-0-6461

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