# Combustion Air (IRC 2009 Chapter 17)

> This chapter establishes requirements for providing combustion air to solid-fuel-burning and oil-fired appliances, referencing manufacturer instructions and NFPA 31.

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## Direct answer and reference scope

Combustion Air (IRC 2009 Chapter 17) is presented here as a reference within the IRC 2009 collection for North Carolina. This chapter establishes requirements for providing combustion air to solid-fuel-burning and oil-fired appliances, referencing manufacturer instructions and NFPA 31. Use the [ICC North Carolina code library](https://codes.iccsafe.org/codes/north-carolina) to confirm the code edition currently adopted for the project, and compare the model text with state amendments, local amendments, effective dates and the permit authority's interpretation. The [ICC code library](https://codes.iccsafe.org/codes) is the model-code publication path. This Harth page is a searchable reference transcription, not an official code publication, legal opinion or confirmation that this edition controls a particular address. Record the project jurisdiction, application date, occupancy, construction type and amendment set before relying on a section. Where this page conflicts with an official publication or the authority having jurisdiction, the official source controls. This duplicate source record is retained for route compatibility, marked noindex, and canonicalized to [/building-codes/us-states/maryland/irc-2009/combustion-air](https://harth.build/resources/building-codes/us-states/maryland/irc-2009/combustion-air.md).

_Authored and prepared by Harth. Review scope: official verification path added; code text and current local applicability have not been independently reviewed._

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_This chapter establishes requirements for providing combustion air to solid-fuel-burning and oil-fired appliances, 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

### What types of appliances does Chapter 17 cover regarding combustion air?

It covers solid-fuel-burning appliances and oil-fired appliances.

### Where can I find combustion air requirements for solid-fuel-burning appliances?

Combustion air must be provided according to the appliance manufacturer's installation instructions.

### What standard applies to combustion air for oil-fired appliances?

Combustion air for oil-fired appliances must comply with NFPA 31.

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