Mechanical inspection

**This information includes most, but possibly not all requirements**
During your inspection the inspector will be looking for:

  • Site address
  • Building permit
  • Building plans and site plan
  • Mechanical contractors license number
  • Combustion air opening
  • Duct sizing and location
  • Location of heating / cooling equipment in garage, minimum of 18" above floor
  • Gas lines under test
  • Propane tank setbacks
  • Flues & stacks, B-vent (no screws permitted), 1" clearance to combustibles
  • Furnace located at fire wall (1 layer, 5/8" type X GWB on wall) (2 layers 5/8" type X GWB on ceiling if supports are inches o.c.)
  • **Approved site plans are required to be on-site with the approved plans at all times**
  • Additional inspections may be necessary as required by the Building Official, Fire Marshal, other Mason County Department, or engineer or geologist of record.
  • All construction must conform to the Mason County approved building plans and is subject to field corrections