Commercial HVAC System Replacements
![]() | COMMERCIAL HVAC SYSTEM REPLACEMENTS |
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SUBMITTAL REQUIREMENTSA building permit is required to remove and replace an HVAC unit or install a new unit for the first time. For newly conditioned spaces, plans and a T-24 Energy Report that includes envelope compliance is required. The submittal requirements are different depending on the scope of work. There are 4 typical scenarios for HVAC change-outs which are listed in this handout. Always staple the set of plans and details together in an organized fashion. | |
REQUIREMENTS FOR UNITS REPLACED IN THE SAME LOCATION | |
1. If an existing unit is removed and replaced with a unit that weighs less than 400 pounds on the same roof curb, provide the following:
*If the submittal is complete, this will likely be an Over-the-Counter permit. | |
2. If an existing unit is removed and replaced with a unit that weighs 400 pounds or more on the same roof curb, provide:
*If the submittal is complete, this scope of work might be an Over-the-Counter permit at the discretion of the plan reviewer. For a possible over-the-counter review, please contact the Plan Check Engineer at 510.583.4182 and make an appointment. NOTE: Units >54MBH require an economizer | |
REQUIREMENTS FOR UNITS INSTALLED IN NEW LOCATIONS | |
3. If a unit weighs less than 400 pounds and is installed in a new location, provide the following items:
If the submittal is complete, this scope of work might be an Over-the-Counter permit at the discretion of the plan reviewer. For a possible over-the-counter review, please contact the Plan Check Engineer at 510.583.4182 and make an appointment. | |
4. If a unit weighs 400 pounds or more and is installed in a new location, provide the following items:
This type of installation will not be reviewed over the counter. There is a 10 business day review cycle for these types of projects. NOTE: Units >54MBH require an economizer | |
FIRE DEPARTMENT REQUIREMENTS | |
If the HVAC moves 2,000 cfm or more, verify the following: | |
If the system requires a duct smoke detector and the building has an existing fire alarm system, provide information about the alarm system. Note: A separate Fire Department permit is required for the alarm connection. |