Form B70-1010 REV 2/14
Mechanical Permit No. __________________________ Plans Examiner _________________________________
(Without roof structure engineering or gas piping diagram)
Project Name: __________________________________________ Occupancy: ____________________________
Job Address: ___________________________________________ Type of Construction: _____________________
Suite: _________________________________________________
Contractor: _____________________________________________ Phone: ________________________________ Phone:
I, ___________________________________, Oregon Construction Contractors Board No. ____________, certify the
following is true and reasonably defines the scope of work for this project:
(Check all that apply) Furnace _____ Suspended Heater _____ Water Heater _____ VAV _____ AHU _____
1. The existing gas fired furnace, suspended heater or water heater (to be removed) has an input rating of_______________
Btu’s.
2. The proposed gas fired furnace, suspended heater or water heater (replacing the existing unit) has an input rating of
_______________ Btu’s. The proposed unit’s btu input rating must be equal to or less than the existing unit.
3. The proposed AHU has a rating of _______________ cfm. The proposed unit’s cfm rating must be equal to the existing unit.
Where required by the Oregon Mechanical Specialty Code, provide smoke detector shutdown.
4. The existing gas fired furnace, suspended heater water heater, VAV or AHU (to be removed) has a total weight (weight
includes water for completely filled water heater) of _______________ pounds.
5. The proposed gas fired furnace, suspended heater, water heater, VAV or AHU (replacing the existing unit) has a total weight
(weight includes water for completely filled water heater) of _______________ pounds. The proposed unit’s weight must be
equal to or less than the existing unit.
6. The proposed gas fired furnace, suspended heater, water heater, VAV or AHU will be placed in the same location as the
existing unit being replaced.
7. The installation shall comply with the current adopted edition of the Oregon Mechanical Specialty Code.
8. The proposed work shall not be concealed until inspected and approved.
This affidavit does not eliminate the need for: unit support and attachment details (vertical and lateral); an engineered lateral design for
suspended units weighing over 75 pounds; plans and details for unit locations; unit cut sheets; SEER/EER ratings, etc. If multiple units
are involved list them below:
Existing Unit Btu Input or cfm/Weight: ____________/___________ New Unit Btu Input or cfm/Weight: ____________/___________
Existing Unit Btu Input or cfm/Weight: ____________/___________ New Unit Btu Input or cfm/Weight: ____________/___________
Existing Unit Btu Input or cfm/Weight: ____________/___________ New Unit Btu Input or cfm/Weight: ____________/___________
In addition, I understand the following is required:
A completed Mechanical Permit application and a copy of all the applicable information shall be available
on the job site for all inspections.
Signature: _________________________________________________________ Date: _________________
Community Development Department
Building Division
12725 SW Millikan Way / PO Box 4755
Beaverton, OR 97076
Phone: (503) 526-2493 Fax: (503) 526-2550
General Information (503) 526-2222
BeavertonOregon.gov
COMMERCIAL MECHANICAL AFFIDAVIT FOR REPLACING GAS FURNACES, SUSPENDED HEATERS, GAS
WATER HEATERS, VAV AND AIR HANDING UNITS
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