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Combustion Air

Combustion Air

This chapter specifies combustion air requirements for solid-fuel-burning and oil-fired appliances by referencing manufacturer instructions and NFPA 31.

M1701 — General

M1701.1 Scope. Solid-fuel-burning appliances shall be provided with combustion air in accordance with the appliance manufacturer's installation instructions. Oil-fired appliances shall be provided with combustion air in accordance with NFPA 31. The methods of providing combustion air in this chapter do not apply to fireplaces, fireplace stoves and direct-vent appliances. The requirements for combustion and dilution air for gas-fired appliances shall be in accordance with Chapter 24.

M1701.2 Opening location. In areas prone to flooding as established in Table R301.2(1), combustion air openings shall be located at or above the elevation required in Section R322.2.1 or R322.3.2.

Frequently asked questions

How do I determine combustion air for a wood-burning stove?

Combustion air for solid-fuel-burning appliances, such as wood-burning stoves, must be provided in accordance with the appliance manufacturer's installation instructions.

What standard applies to combustion air for oil furnaces?

Combustion air for oil-fired appliances, including oil furnaces, must comply with the requirements of NFPA 31.

Are all combustion air systems covered by this chapter's methods?

No, the methods detailed in this chapter specifically exclude certain installations, as indicated by the truncated text in the scope.

Where verbatim source text is shown, it is reproduced from the code as adopted into law by the jurisdiction, sourced from public.resource.org under the government edicts doctrine (see Georgia v. Public.Resource.Org, Inc., 590 U.S. 255 (2020)). This material reflects enacted law and is provided for reference and educational purposes only. It is not legal advice and may not reflect local amendments or the most recently adopted edition. Always verify requirements with the authority having jurisdiction.