If you're planning to use the Mr. Heater Little Buddy, you'll probably want to know how long your propane tank will last. This little heater runs at 3,800 BTUs, and with that, a standard 1 lb. propane tank usually lasts about 5 to 6 hours. Keep in mind though, this can vary depending on conditions like outside temperature and your ventilation setup.
Speaking of ventilation, the Little Buddy is designed to be safe for indoor use, sporting features like an Oxygen Depletion Sensor and an automatic shutoff if it tips over. Our research suggests these are good safety nets, but you should still take precautions.
For example, it's smart to use a carbon monoxide detector and crack a window a bit if you're running it indoors for a while.
For those planning longer heating sessions, you might find yourself swapping propane tanks more often than you'd like, so having a few extras on hand is a good idea.
On the whole, people seem to like how portable and efficient it is, though there are a few points to watch out for. For instance, it's got a single heat setting. That means you can't really dial up or down the warmth, which might be a downside if you're looking to control the temperature precisely.
Overall, the Little Buddy’s a solid choice for heating small spaces, as long as you handle it with the right safety approaches and plan your propane use accordingly.
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How we researched this
Where this comes from: this answer draws on the product's published specifications and the reviews ShopSavvy collected for it, alongside prices from 20 retailers in ShopSavvy's price data, most recently seen Oct 10, 2026.
📚More About Mr. Heater Little Buddy Propane Heater
Where to Buy
| Retailer | Price | Last seen | Buy |
|---|---|---|---|
| $54.97 | Nov 30, 2024 may have changed | ||
| $59.99 | Nov 30, 2024 may have changed | ||
| $59.99 | Nov 30, 2024 may have changed | ||
| $59.99 | Nov 30, 2024 may have changed | ||
| $61.98 | Nov 30, 2024 may have changed |
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