Do I need a smoke detector?
If the air distribution system is greater than 2,000 CFM then yes, you need smoke detectors on both supply and return air ducts.
Related questions
Mechanical Section (Permitting, Inspections and Enforcement)
No. Only a State Licensed Professional Engineer (Mechanical) can seal and sign mechanical drawings.
No, all boiler permits must be handled by the State of Maryland by calling 410-767-2330.
Yes, you will need both permit types.
Yes, you will need a mechanical permit.
Yes, you will need a mechanical permit.
No, only original stamped and sealed drawings with the Principal Engineer's professional certification statement will be accepted.
The current Mechanical Code -- IMC-2015, and Energy Code -- IECC-2015 OR ASHRAE 90.1.
Please refer to the 2015 IMC.
The fee is 1% of the cost of mechanical work (labor and materials) or $65, whichever is higher, plus a 5% technology fee.
A mechanical permit is required to erect, install, enlarge, alter, repair, remove, convert, or replace a mechanical heating, ventilating, or air-conditioning system, the installation of which is regulated by the International Mechanical Code (IMC), International Fuel Gas Code (IFGC), or the International Residential Code (IRC), as appropriate. These pieces of equipment include, but are not limited to furnaces, heat pumps, air-conditioning units, range hoods, cooling towers, chillers, fuel-oil tanks and piping systems, and boilers.
You can view your permit status
Anyone applying for a mechanical permit will need a HVAC contractor’s license.