AIR CONDITIONER/HVAC GUIDELINES
Existing One- & Two-Family Homes Only
Please note all permit applications for replacement of air conditioning devices require the following:
- Construction permit application folder (Page 2 MUST be signed)
- Completed Signed and sealed Electrical Subcode Technical Section
- Completed Signed and Sealed Mechanical Subcode Technical Section (Sealed by Licensed HVACR Ctr. Or Licensed Master Plumber)
- Building Subcode only required if replacing ductwork.
- Specifications of Mechanical Equipment to be installed
- If outside condensing unit is to be installed, applicant MUST complete a Zoning Application and show location of unit on the survey of property indicating distance from condenser to side and rear yard property lines. (Not allowed in front yards)
- If you are installing BOTH a FURNACE & AC a completed Chimney Verification Form also is required
- If installing a chimney liner, the liner MUST be listed as other device on the Mechanical Subcode and a spec sheet for the liner must be included with your application.
For NEW Construction and Additions:
Submit items 1, 5 & 6 above (7 & 8 if applicable) AND
Building, Electrical and Plumbing Subcode Forms, signed & sealed by licensed HVAC Ctr Or Master Plumber (Plumbing tech only)
Manuals J, S, & D MUST be submitted and on site for inspections
Incomplete applications will be returned. Thank you for your anticipated co-operation with regard to the permit application process
NEW HVAC Applications must submit Manuals J,S and D
Manual J- Heating & Cooling Calculations
Manual J outlines the requirements for conducting a "load calculation" on the home, such as measuring
insulation & ventilation levels. Other considerations include air duct tightness & the number of heat producing appliances and people.
Each room's results specify how many BTU's are lost in the winter and how many are gained in the
After measuring each room's sensible (temperature-related) and latent (Humidity related) heat, the
technician can then determine how much conditioned air that room requires. It is necessary to conduct
this inspection PRIOR to sizing a system so that you end up with a properly sized HVAC system.
MANUAL S- Heating and Cooling Sizing and Selection
Manual S contains a lot of information regarding equipment sizing, ventilation, and airflow, taking into
consideration sensible and latent heat, amount of airflow and static pressures. This manual, combined
with the load calculations from Manual J, give the technician the technical information for selecting the
proper system for your home, whether it's an air conditioner, heat pump, furnace or boiler.
Manual D- Heating and Cooling Duct Design
Manual D works in conjunction with the other manuals to provide proper Design, sizing and installation of residential duct system. ‘ductwork design is extremely important to prevent air & energy leaks, in addition to humidity and moisture problems. Manual D includes information for determining the best duct design for the available space, including how to properly size, seal and insulate air ducts.