A wood stove in a manufactured or mobile home is legal, common, and safe when it is done right. The catch is that "done right" means something different than it does in a house on a poured foundation. The stove has to be listed and labeled for manufactured home use, it has to pull its combustion air from outside, it has to be bolted to the floor, it has to be electrically grounded to the home's steel frame, and it has to vent through a listed factory built chimney installed with the manufacturer's manufactured home kit.
Those rules come from a federal standard rather than from your city or county, and they exist because a manufactured home is a tighter, lighter, more portable structure than a site built house. We service stoves in mobile home communities across metro Denver, and the same violations turn up again and again: no outside air, single wall pipe punched through the roof, a stove sitting loose on a hearth pad that is too small, and paneling scorched brown a foot from the firebox.
Why a Manufactured Home Follows a Federal Code Instead of the Local One
Every manufactured home built since June 15, 1976 is constructed under the HUD Manufactured Home Construction and Safety Standards, published at 24 CFR Part 3280 and usually called the HUD code. Homes built before that date are technically "mobile homes," though most people use the words interchangeably. A red HUD label on the exterior tells you the home was built to the standard.
The HUD code covers the structure, fire safety, plumbing, electrical, and heating of the home itself, and it preempts local building codes on those subjects. Adding a wood stove later is an alteration, so it sits in an overlap: the installation has to satisfy the HUD requirements for solid fuel appliances, and it usually also needs a local permit and inspection. In Colorado that can involve the state as well as the local jurisdiction, so ask your building department before you buy a stove.
The reasons the standard treats solid fuel differently are physical:
- The home is built to travel down a highway. Framing is lighter, walls are thinner, and the structure flexes and can be moved again.
- The living space is small and, in newer units, tightly sealed. A stove drawing room air can depressurize the home enough to pull exhaust back down the flue or backdraft a gas water heater.
- Interior finishes are often vinyl covered gypsum or thin wood paneling, which ignite at lower temperatures.
What the HUD Code Requires of a Wood Stove, in Plain Terms
The requirements come down to five things, and all five have to be present.
Listed and labeled for manufactured home use
The stove or factory built fireplace must be tested by a recognized laboratory specifically for manufactured home installation, and its label must say so. Room heaters are tested to UL 1482 and factory built fireplaces to UL 127; the manufactured home approval is a separate line on the label.
Outside combustion air
The appliance must draw the air it burns from outdoors through a dedicated duct sealed to its intake. It cannot use room air. This is the biggest difference from a site built installation and the one most often skipped.
Secured to the floor
The stove must be fastened to the floor structure so it cannot tip, slide, or separate from its chimney if the home is moved or releveled.
Electrically grounded
The appliance must be bonded to the steel chassis with a grounding conductor, because a steel stove joined to a metal chimney through the roof is a lightning and stray voltage path.
Listed chimney with a spark arrestor cap
The stove must vent through a factory built chimney listed for use with it, installed with the manufacturer's manufactured home parts, and topped with a spark arrestor cap. The chimney still has to clear the roof per the ordinary 3-2-10 rule, which our guide to the chimney height rule in Colorado explains.
Manufactured Home Versus Site Built: The Installation Side by Side
Table 1. How a manufactured home listed wood stove installation differs from a site built home installation.
| Item | Site built home | Manufactured home |
|---|---|---|
| Appliance listing | Any listed stove | Listed and labeled specifically for manufactured home use |
| Combustion air | Room air allowed; outside air recommended in tight houses | Sealed outside air duct to the intake is mandatory |
| Anchoring | Optional | Bolted through the floor to the structure |
| Grounding | Not required | Conductor bonded to the steel chassis |
| Chimney type | Masonry flue with liner, or listed Class A chimney | Listed Class A chimney with the manufactured home kit; masonry effectively never used |
| Hearth pad | Listed or built up pad per the manual and local code | Listed pad per the manufactured home instructions; floor may need reinforcement |
| Clearances | Per the manual, reducible with listed shields | Per the manufactured home section of the manual, often larger because finishes are thin |
| Permit | Local mechanical permit | Local permit, possibly state involvement |
Every item in the right hand column is checked during a proper chimney and stove inspection. If you are shopping, our overview of wood burning stoves and inserts in Colorado covers sizing before you narrow down to approved models.
Why the Wood Stove at the Big Box Store May Not Be Approved
Walk into a home improvement store in the fall and you will find affordable steel stoves stacked on pallets. Read the box. Many say, in so many words, "not for use in mobile homes." That means the manufacturer never submitted that model for the manufactured home portion of the test.
A stove earns a manufactured home listing by being tested with a specific outside air kit, a specific base with anchor holes, a grounding lug, and clearances measured with those parts in place. Change any of them and the test no longer applies. The approved stove is often a different model number, or the same stove sold with a required kit, and it is only approved when installed exactly as the manual describes. Buying the approved stove and skipping the outside air kit puts you back where you started.
Check the EPA label too. Many EPA certified models have a manufactured home approved version, and our guide to EPA certified wood stoves in Colorado explains what that certification covers. EPA certification and HUD approval are separate; you need both. And size the stove to the room, because an oversized stove in a small home gets run choked down and smoldering, which builds creosote fast in a short chimney at altitude.
The Chimney: Listed Class A Systems and Why Masonry Is Essentially Never Used
A masonry chimney weighs thousands of pounds and needs its own footing below frost depth. A manufactured home sits on piers over a steel chassis, and neither can carry that load. Even with a separate footing beside the home, the two settle at different rates and the connection cracks. The one exception is a site built addition with its own foundation; that chimney falls under normal masonry rules, including the need for a sound liner, which our chimney lining service handles the same as on any house.
What the stove listing calls for instead is a factory built Class A chimney tested to UL 103 HT: insulated stainless pipe rated for solid fuel temperatures, light enough to hang from the ceiling framing, and tested as a system with the parts that pass it through the ceiling and roof. The manufactured home kit is that collection of parts: ceiling support box, attic insulation shield, flashing and storm collar, spark arrestor cap, outside air intake, and anchoring hardware.
One rule about connector pipe matters more than any other. Black single wall stovepipe is allowed only inside the room, from the stove up to the ceiling support box. It must never pass through a ceiling, attic, wall, or roof.
The Violations We See Most in Older Metro Denver Park Units
Older parks in Aurora, Federal Heights, Lakewood, Thornton, and north along I-25 are full of units from the 1970s through the 1990s, many with a stove added by a previous owner with good intentions and no manual.
Table 2. Common manufactured home stove violations, what each risks, and how it is corrected.
| Violation | What it risks | Correction |
|---|---|---|
| No outside combustion air | Backdrafting, smoke spillage, carbon monoxide, poor burn | Install the manufacturer's outside air kit, ducted through the floor and sealed to the intake |
| Single wall pipe through the roof | Ignition of ceiling framing and insulation; leaks at the penetration | Replace with listed Class A chimney, support box, insulation shield, and flashing |
| Stove not anchored | Tipping during a move or relevel; connector separation | Bolt the pedestal through the floor per the manual |
| Undersized or unrated hearth pad | Ember burns and radiant charring of the subfloor | Install a listed pad meeting the manual's size and rating |
| Clearance to paneling or gypsum | Slow pyrolysis of finish and studs, then ignition | Relocate the stove or add a listed ventilated wall shield |
| No spark arrestor cap | Embers on a dry roof or in the neighbor's yard; water and animals in the flue | Install the listed spark arrestor cap |
The missing outside air kit draws the most pushback because the stove seems to work fine without it, right up until a windy night when the bathroom fan and the furnace are both running and overpower a short chimney. The kit also keeps the stove from depressurizing the space around a gas water heater or furnace, which our carbon monoxide and chimney safety guide covers in detail.
Paneling a few inches too close does not fail in a season. Wood exposed to moderate heat for years changes chemically and eventually ignites at temperatures far below what fresh lumber needs; brown discoloration beside a stove is that process in progress. Our guide to mantel and hearth clearance requirements explains how clearances work and how listed shields reduce them.
Colorado leans on every one of these rules. Thin air at altitude means weaker draft, and downslope wind pressurizes one side of a home while pulling on the other, so a short chimney on a single wide roof feeding a stove on room air is marginal and starved. Many parks border fields that cure to tinder by late summer, which is what the spark arrestor is for. And below zero nights are when stoves run hardest, which is exactly when an unshielded wall or undersized pad fails.
Gas Fireplaces and Gas Stoves in Manufactured Homes
The gas version follows the same logic. The appliance must be listed for manufactured home use and secured to the structure. The HUD standard requires fuel burning heating appliances to be vented outdoors, so a direct vent unit that draws combustion air through a sealed coaxial vent is the normal choice, and unvented gas logs are not an option. The gas line needs an accessible shutoff, a listed connector, and a sediment trap, and the unit must be bonded.
Direct vent gas stoves and inserts are a genuinely good fit for manufactured homes: lightweight, small listed vent kits, no depressurization, and steady heat without hauling wood through a small space. If you are weighing a conversion, our gas insert and gas stove service covers what a manufactured home installation involves. Whatever you burn, a carbon monoxide alarm near sleeping areas is part of the job.
Insurance, Park Rules, and Resale
Your insurer. Most manufactured home policies ask about solid fuel appliances, and many require disclosure, photos, and sometimes an inspection report. An undisclosed or unlisted stove gives an adjuster an easy reason to question a fire claim. Keep the paperwork with the policy; our guide on chimney storm and hail damage insurance claims in Colorado covers documenting chimney work so it holds up.
Your park and your future buyer. Many metro communities regulate solid fuel appliances in the lease, so read it before you buy a stove. And a buyer's inspector will look for the label, the outside air duct, the anchor bolts, and the chimney listing. A compliant, permitted installation is a selling point; a noncompliant one is a negotiation or a removal.
Homeowner Checklist: Verifying an Existing Installation
If you bought a home with a stove already in it, work through these steps in order with the stove cold. A flashlight and a tape measure are all you need.
- Find the appliance label, usually on the back or under the ash lip. It must say "mobile home" or "manufactured home." If it is missing or says not approved, stop here; nothing else on this list can fix that.
- Find the outside air duct under or behind the stove, and confirm it terminates outdoors with a screened opening.
- Check the anchors. Look for bolts through the pedestal into the floor. The stove should not rock or slide.
- Look for the grounding conductor, a bare or green wire from a lug on the stove body running through the floor toward the chassis.
- Measure the hearth pad against the manufactured home section of the manual, which you can usually download by model number.
- Measure clearances to every wall and to furniture and curtains. Look for darkened finish near the stove.
- Follow the pipe up. Single wall pipe should end at a ceiling support box, with only insulated Class A chimney and an insulation shield above it.
- Look at the top from outside. Confirm a spark arrestor cap, storm collar, and sound flashing, and estimate height against the 3-2-10 rule.
- Ask about permits, then book a professional inspection if anything is missing, unclear, or damaged. We also camera the chimney interior and check joints you cannot see from the room.
When to Stop Using the Stove Immediately
Some findings are a repair to schedule. These mean the next fire should not happen until the problem is fixed:
- Single wall stovepipe passing through the ceiling or roof.
- Wall or ceiling finish that is discolored, blistered, or smells like hot wood while the stove runs.
- Smoke spilling into the room, or a carbon monoxide alarm that has sounded, with the stove running.
- Gaps, rust holes, or separated joints in the pipe or chimney.
When a stove has to be reinstalled properly, this is the sequence:
- Inspect and photograph the existing installation for your records and your insurer.
- Confirm the appliance is manufactured home listed, or select a replacement that is.
- Pull the permit and get any park approval in writing.
- Install the outside air kit, anchors, grounding, hearth pad, and any wall shields per the manual.
- Install the Class A chimney with the manufactured home kit, from support box to spark arrestor cap.
- Test fire, check draft and clearances under real conditions, and schedule the permit inspection.
Repairs to the surrounding structure, such as scorched framing or a rotted roof penetration, fall under our chimney repair service and are scoped during the inspection.
Frequently Asked Questions
Can I legally have a wood stove in a mobile home in Colorado?
Yes, if the stove is listed for manufactured home use, has a sealed outside air supply, is anchored and grounded, and vents through a listed Class A chimney with the manufactured home kit. It also has to satisfy your local permitting authority and, often, your park's rules.
What is the difference between a mobile home approved stove and a regular one?
A mobile home approved stove was tested with a specific outside air kit, anchor provisions, a grounding lug, and clearances measured with those parts in place, and its label says so. A regular stove has not passed that test.
Why does the stove need outside air when my house is drafty anyway?
Even a leaky manufactured home is small, and exhaust fans, dryers, and furnaces all compete for the same air. Outside combustion air takes the stove out of that competition so it drafts consistently and does not spill smoke or carbon monoxide into the room.
Is single wall stovepipe ever allowed?
Only inside the room, from the stove to the ceiling support box, at the clearances the manual specifies. It must never pass through a ceiling, attic, wall, or roof.
Do the same rules apply to a gas fireplace or gas stove?
Largely yes. The gas appliance must be listed for manufactured home use, secured, vented to the outdoors, and connected with a shutoff and listed connector. Direct vent units are the standard choice, and unvented gas logs are not permitted.
Will my insurance cover a fire if the stove was not installed to code?
That depends on your policy, and we cannot answer it for you. An undisclosed or noncompliant appliance gives an adjuster a reason to scrutinize a claim, while a permitted, inspected, documented installation removes that question. Talk to your agent and keep your records.
Next Step: Have Your Manufactured Home Stove Inspected Before Heating Season
If your manufactured or mobile home has a wood stove, gas stove, or fireplace and you cannot say for certain that it checks every box above, an inspection is the place to start. We will confirm the listing, trace the outside air, check anchors and grounding, measure clearances, camera the chimney, and give you a written report with photos for your insurer or park office. Call Adam Chimney Sweep at (720) 207-9232 and let us get the stove right before the first cold night of the season.
