Published output, side by side
Every figure below is one the listing publishes. A blank is a blank — several makers in this category simply do not state a BTU rating, and we will not invent one.
| | Published BTU | Flame area | Flame height |
|---|
| Outland 21-inch bowl | 58,000 | 21 in round | Ground level |
| Outland 19-inch bowl | 58,000 | 19 in round | Ground level |
| Ciays 28-inch table | 50,000 | 28 in square table | Table height |
| Ciays 28-inch tabletop | 50,000 | 28 in, wind guard | On a table |
| BALI OUTDOORS square table | 50,000 | Square table | Table height |
| COOS BAY gas fireplace | 50,000, adjustable | Vertical firebox | Chest height, directional |
| Endless Summer 44 x 32 | 40,000 | 44 in x 32 in | Table height |
Why the fireplace is on a fire pit page
Because geometry beats BTU, and the COOS BAY is the clearest example on the page. A fire pit radiates in a circle, so if you are sitting on one side, most of the output is warming the empty chairs opposite and the air above. A fireplace has a back and two sides, so the firebox reflects heat forward into a much narrower arc. At the same published 50,000 BTU, the fireplace puts noticeably more of it where the people are — provided the people are in front of it.
That is the whole trade. A circle of six friends wants a pit. Two chairs against a wall want a fireplace. If that sounds like your patio, our outdoor gas fireplaces page covers the category properly, and fire pit vs outdoor fireplace runs the decision end to end.
Four things that cost you more heat than a small BTU difference
- Wind.A breeze takes the flame sideways and takes your warmth with it. This is the single biggest variable outdoors and the reason the Ciays tabletop earns its place — the glass wind guard holds the flame upright instead of letting it lie flat. A wind guard does more for felt heat on a gusty evening than 8,000 BTU does.
- Flame height versus seat height.Heat radiates from the flame outward. A ground-level bowl warms your legs and does little for your upper body; a table-height flame warms your torso and leaves your feet cold. Neither is wrong — but match it to how you sit. Lounge chairs want a low bowl, dining chairs want a table.
- Distance. Radiant heat falls away fast with distance. Moving a chair a foot closer does more than any upgrade on this page, and a 44-inch table that seats six puts everyone further from the flame than a 19-inch bowl that seats three.
- Tank temperature.A 20-pound propane cylinder gets cold as it vaporizes, and on a genuinely freezing night its output drops. Running a big burner flat out in sub-freezing weather is where people notice their pit “losing” heat. This is physics, not a defect, and a bigger tank suffers less from it.
What about a smokeless fire pit for heat?
A smokeless pit burns hotter and cleaner than a plain bowl, because the double wall preheats secondary air and burns off the smoke. That is genuinely more heat from the same wood. The catch for warmth is where the heat goes: the secondary burn happens at the top of the chamber, so a lot of it goes vertically, and the double wall insulates the outer skin that would otherwise radiate at you. In practice a smokeless pit feels hot at the top and mild at the sides, where a plain steel bowl of the same diameter radiates through its whole wall.
So if the question is purely heat, a wide plain bowl beats a smokeless one of the same size, and a larger smokeless one beats both. We cover the category on best smokeless fire pits and the big end of it on best large smokeless fire pits.
Running costs, briefly
A burner rated 50,000 BTU per hour run flat out will empty a 20-pound propane cylinder — roughly 430,000 BTU of usable energy — in the region of eight to nine hours. Most people run a pit turned down, which stretches that considerably, and an adjustable burner like the COOS BAY’s exists precisely so you can. Budget for a spare cylinder either way; running out halfway through the evening is the most common complaint in this whole category and it is not the pit’s fault.
Two placement rules that apply to every pick here. Keep the clearances Smokey Bear sets out for any outdoor fire — clear ground around the site, at least 15 feet from tents, vegetation and low branches, and vertical clearance of at least three times the flame height. And never run a gas pit under a solid roof without checking the clearance; we work through that on fire pits for covered patios.
