A pellet stove is a small, fussy fire in a box, burning pressed wood, a tidy form of biomass energy. Pellet stove installation comes down to a safe spot, a safe vent and a power socket. Most people hire an expert installer or the dealer who sold the appliance, and many places require a permit. Here's what they'll do, so you know what to ask.
How To Install A Pellet Stove
Step One: Pick The Location
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Heat spreads out from where the heater sits, so a central location warms more rooms, while a back corner only warms the back corner.
The floor under it must be solid and non-flammable, like a tile pad or a metal hearth plate. Leave the clearance space the manufacturer's instructions ask for between the unit and your walls and furniture. It runs cooler on the outside than a wood stove, so that gap is usually smaller.
Step Two: Pellet Stove Chimney Installation Or A Wall Vent
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You don't need a tall brick chimney. A combustion fan pushes the smoke out, so a freestanding model can use a small pipe that goes horizontal through a wall or vertical up through the roof. That makes the venting installation simpler than for a wood fire.
Where that pipe ends matters for safety. One manufacturer's instructions say at least 4 feet below or beside a door or window that opens, and at least 7 feet up next to a public walkway. Some also ask for a minimum vertical rise, at least 1.5 m (5 feet) in one case. Only use the vent type specified in the manufacturer's instructions, and check the flue rules in your area.
Can You Vent A Pellet Stove Into An Existing Chimney?
Yes, and that's what a pellet stove insert is designed for. An insert slides into a fireplace you already have, and its combustion fan sends the smoke up the old flue. PelPro recommends a full liner from the insert to the very top for every chimney job. If the pipe stops short, the damper area must be sealed with a steel plate.
Step Three: Power
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The auger (the screw that feeds pellets), the fans, the igniter and the little computer all run on electricity, so you need a socket nearby.
Off-grid, this matters a lot. A wood fire keeps going in a blackout, but this one doesn't unless you've got batteries. The battery calculator helps you size a backup.
How Do I Install A Pellet Stove In My Mobile Home?
Only use products approved for mobile homes. One approved PelPro unit must be bolted down, grounded to the home's frame with copper wire, and fed by its outside air intake kit. It may not go in a bedroom, and the floor, walls and ceiling must stay strong.
Keeping It Clean And Safe
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The EPA says these heaters need regular cleaning to run efficiently and safely, plus a professional clean at least once a year.
- Burn pot: weekly, vacuum out the ash.
- Hopper: every few months, suck out the sawdust at the bottom.
- Auger: pull out any pellets jammed in the screw.
- Heat exchanger: yearly, brush off the soot so heat gets through.
- Vent pipe: once a year, by a pro.
Skip it and efficiency drops, and soot and ash slowly choke the fire.
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Keep curtains, paper and the firewood pile away, and fit a carbon monoxide (CO) detector. Any appliance that burns fuel can leak this invisible gas if something goes wrong, and the alarm warns you first.
Size, Pellets And Cost
Picking The Right Size
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Each appliance is rated in BTUs per hour. One BTU is the heat needed to warm one pound of water by 1 °F, and 1 kW equals about 3,412 BTU per hour.
The proper way to size one is a heat-loss calculation: how much heat your house leaks on a cold day, based on insulation, windows and drafts. An installer can do it, and our R-value calculator shows how well your walls hold heat in. Fixr's rough guide:
| Room size | Stove output (BTUs) |
|---|---|
| 250 sq ft | 9,000 |
| 500 sq ft | 15,000 |
| 1,000 sq ft | 35,000 |
| 1,500 sq ft | 50,000 |
| 1,800 sq ft | 50,000 and up |
Too big wastes fuel, but too small runs flat out and still leaves you cold.
How Long Will A 40 lb Bag Of Pellets Burn?
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About 26 hours on a low setting (1.5 lb an hour) and about 8 hours flat out (5 lb an hour). So keep a dry place for a winter's worth, like a garage or shed, not a damp basement. Wet fuel turns back into sawdust mush and clogs the auger. More tips are in storing firewood and pellets.
What It Costs
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The cost guide Fixr puts a US install at $1,000 to $4,500, about $3,000 on average, for the whole job. An insert runs $2,000 to $7,000. Fixr's line items: labor $200 to $1,000, a new vent $200 to $800 and a permit $50 to $250. Prices elsewhere differ, so get local quotes.
Sources
- US EPA Burn Wise, pellet stoves
- PelPro FPP/IPP, vent termination clearances (p. 11)
- Piazzetta P960, minimum vertical rise (p. 13)
- PelPro FPP, inserts in masonry fireplaces (p. 21)
- PelPro PP130, mobile home installation (p. 31)
- We Love Fire, how long a 40 lb bag lasts
- US EIA, British thermal units
- Fixr, installation cost guide
Hard Words
| Term | What it means |
|---|---|
| Clearance | The minimum gap to walls and furniture, set by the maker. |
| Insert | A heater built to slide into an existing fireplace and use its flue. |
| Liner | A metal pipe run inside an old flue so the exhaust has a sealed path to the top. |
| Burn pot | The metal cup where the fire burns. |
| Outside air kit | A duct that brings fresh air from outdoors for the fire. Required in mobile homes. |
| BTU | British Thermal Unit. The heat needed to warm one pound of water by 1 °F. |
Common Questions
What does it take to install a pellet stove?
A non-flammable floor, an approved vent that ends a safe distance from doors and windows, and a nearby socket. Many areas need a permit.
Can you vent a pellet stove into an existing chimney?
Yes, usually with an insert made for your fireplace. PelPro recommends a full liner to the top, and a steel plate over the damper area if the pipe stops short.
Why are people getting rid of their pellet stoves?
We found no survey on that question. The usual trade-offs are clear, though: it needs electricity, so it stops in a blackout, and it needs regular cleaning plus a yearly check by a pro.
How long will a 40 lb bag of pellets burn?
About 26 hours on low and about 8 hours on high, depending on the model and setting.