General Mechanical System Requirements

Attic Furnaces Need Code-Compliant Access and Working Space

What access is required for a furnace installed in an attic?

M1305.1.3

Furnace Closets Need Working Clearance in Front of Equipment

How much space is required in front of a furnace in a closet?

M1305.1

Garage Mechanical Equipment Must Be Protected From Vehicle Damage

Does a furnace or water heater in a garage need bollards?

M1307.3.1

HVAC Appliance Nameplates Need to Remain Visible

Can the furnace label be covered by a closet wall or access panel?

M1303.1

HVAC Equipment Must Be Approved for the Intended Installation

Can I install any used furnace or air handler if it works?

M1302.1

Mechanical Appliances Must Use the Fuel They Are Listed For

Can a natural gas furnace be connected to propane?

M1304.1

Mechanical Equipment Must Be Installed by Its Listing and Instructions

Does code require HVAC installers to follow the manufacturer instructions?

M1301.1

Mechanical Equipment Must Keep Required Clearance to Combustibles

Can wood framing or storage touch a furnace, flue, or duct?

M1306.1