5 Ohio Rules That Change the Day a Homeowner Adds a Wood Stove

A wood stove sounds cozy.

Then you start the paperwork.

Ohioans adding a stove have several rules to sort out before the first fire.

Here’s what to sort out before you light it.

Note: This is general information, not legal, tax or insurance advice. Code, permit, tax and insurance rules are subject to change.

1. Building Department Approval

Building department approval comes first, and Section 105.1 of the Residential Code of Ohio is the rule behind it.

Under it, you apply to a certified residential building department and get approval before you alter a home.

Permit first, fire second.

Cincinnati’s buildings department lists wood-burning stoves by name, alongside fireplaces and furnaces, among the heating devices that require permits for installation or replacement.

If your area has no certified residential building department, Section 101.5 says you as the owner don’t have to submit construction documents, seek approvals, request inspections or obtain certificates of occupancy.

2. UL 1482 Listing

Your wood stove has to pass UL 1482, the Underwriters Laboratories (UL) test for solid fuel-fired room heaters, under Section 1410.1.

You also have to install the stove according to its listing, the manufacturer’s installation instructions and the code.

The manual matters.

3. Floor Protection

Floor protection for your wood stove has its baseline in Section 1410.2.

That baseline is a noncombustible floor, or an approved assembly built from noncombustible materials, that extends at least 18 inches past the stove on all sides.

Eighteen inches, all around.

A listed stove can sit on a floor protector labeled to UL 1618, another UL standard, under an exception in the same section.

If the stove is listed for combustible floors without floor protection, Section 1410.2 sends you to the manufacturer’s instructions instead.

4. Connector and Flue Limits

Section 1801.12 keeps a wood stove from connecting to a flue that already vents another appliance.

The pipe running from your stove to the chimney is the connector.

Section 1803.3.1 doesn’t let that connector pass through any floor or ceiling.

How close can it get to wood framing?

Under Table 1803.3.4, a single-wall metal connector on your stove needs 18 inches of clearance to combustibles.

Flue size has limits in Section 1805.3.1.

Unless the manufacturer’s instructions say otherwise, the flue can’t have less area than your stove’s flue collar, the opening where the connector attaches.

It also can’t be larger than three times the collar’s area.

Collar size sets the range.

5. Factory-Built Chimney Type

When your wood stove gets a factory-built chimney, Section 1005.3 requires one that meets the Type HT requirements of UL 103.

The same section requires it to be marked both “Type HT” and “Residential Type and Building Heating Appliance Chimney.”

Your chimney also has to be installed and terminated, meaning finished at the top, according to the manufacturer’s installation instructions under Section 1005.1.

Markings matter here.

EPA Emission Limits

If you’re shopping for a wood stove, EPA’s emission limit depends on what wood the test used.

EPA lowered the room heater limit in 2020, and it’s now 2.0 grams an hour of emissions for stoves burning crib wood in the test.

Crib wood is stapled-together 2-by-4 or 4-by-4 lumber.

If your stove was tested with cord wood instead, the limit is 2.5 grams an hour.

Test wood matters.

Masonry Chimney Height

A wood stove venting into a masonry chimney falls under the height rule in Section 1003.9 of the Residential Code of Ohio.

If your stove vents into a masonry chimney, it has to extend at least 2 feet higher than any part of a building within 10 feet.

Your chimney also needs a minimum of 3 feet above the highest point where it passes through the roof, under the same section.

Both numbers apply.

Federal Tax Credit Cutoff

Your wood stove may have fallen under the biomass stove category of the federal energy efficient home improvement credit, and the IRS tied that credit to a date window.

The credit applied to qualifying property placed in service on or after Jan. 1, 2023, and before December 31, 2025.

Dates decide it.

The credit equaled 30% of certain qualified expenses.

Biomass stoves were capped at $2,000 per year.

For 2025, an item had to come from a qualified manufacturer to earn the credit.

Under the IRS’s FAQ on the One Big Beautiful Bill law, the credit isn’t allowed for any property placed in service after December 31, 2025.

Notifying Your Insurer

A wood stove also matters to your homeowners insurer.

Progressive’s consumer guidance, updated in March 2024, says you should notify your insurer right away if you add a wood-burning stove.

That applies if you’re considering a stove, too.

Some companies might require professional installation and a safety inspection, while others may only require a photograph.

That’s guidance from one insurer, so your company’s rules may differ.

Early beats late.