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The Happy Caveman Campfire is a propane-powered outdoor heater that warms campers by heating a vertical stainless-steel tube until it glows red. Its maker says the tube radiates heat outward toward people sitting nearby. It is not a wood fire or a flame-free heater: it uses propane and an exposed flame, and the tube becomes extremely hot.
How the glowing-tube heater works
New Atlas reports that the 66 cm (26 in) tube is made from 304 stainless steel and connects to a propane tank by hose. The burner heats the tube from inside. A restrictor plate slows the exhaust, while openings along the sides direct flame and hot exhaust outward. The manufacturer calls the tube a radiant burner and presents heat directed toward seated campers as the key difference from bowl-shaped propane fire pits. These are design descriptions and maker claims, not independent measurements of how much heat reaches a person.
The manufacturer lists output at approximately 40,000 BTU, but independent output testing is not established. As founder Nate Sargent put it, “BTU ratings tell you how fast you’re burning propane. It says nothing about how much of that energy lands on your body.” The distinction is useful, but it does not itself verify the heater’s real-world warmth or efficiency.
What it changes compared with a wood fire
Propane avoids gathering firewood and may mean less smoke and no wood embers. It does not reproduce the smell of burning wood or the experience of cooking over an open fire, as New Atlas notes. Nor does the available information establish that the Campfire can cook food. Choose it for the possibility of convenient, directed radiant warmth—not as an equivalent substitute for every part of a wood fire.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
The reported weight is 1.8 kg (4 lb), but that is the heater, not the complete fuel setup. A propane tank is connected by hose and adds substantial weight and bulk, so the product should not be treated as backcountry equipment simply because the heater itself is light. The manufacturer’s runtime estimate is based on a standard 20 lb propane tank; whether a tank is included in any current package is not established, and universal connector compatibility should not be assumed.
Fuel use and estimated runtime
The manufacturer says a standard 20 lb propane tank runs for approximately nine hours at full power or around 13 hours at half power. New Atlas likewise reports up to nine hours at full power on a 9 kg (20 lb) tank. These are manufacturer/reporting estimates, not independently verified runtime tests. Actual runtime will depend on operating level and conditions.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
Heat, tipping, and safe placement
The tube becomes extremely hot. Keep hands, children, and pets away, and do not tip the unit while it is lit or cooling. The campaign FAQ warns that a fall could cause burns or ignite material where the heater lands. A claim that its feet stay cool is not enough to establish that it is safe on a wooden deck; use only where the product instructions and site conditions permit, on a stable surface with clearance from combustible material.
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Not necessarily. A propane appliance may be allowed under some restrictions, but check the current rules with the local land manager before use. Restrictions vary by location, agency, order level, and conditions. The manufacturer’s FAQ itself acknowledges that some stricter orders limit recreational propane fire pits, so the shutoff valve and lack of wood embers do not guarantee permission.
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
What is known about testing and certification?
The campaign FAQ said third-party testing for safe combustion and carbon-monoxide output was planned before any unit shipped, and that formal gas-appliance certification was on the roadmap after the first production run. The available sources do not establish that either the testing or certification has since been completed. Do not treat planned testing as a completed safety validation.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Price and availability are not established as current
New Atlas reported a US$399 early Kickstarter pledge, a planned US$499 retail price, and estimated January 2027 shipping. Those were campaign-era figures, not confirmation of current pricing, sales, or delivery. Happy Caveman’s August 18, 2026 press release recorded 573% of the funding goal, 162 backers, and US$57,329 pledged; that is a dated campaign snapshot. The release gave September 15, 2026 as the campaign end date, but current availability after that date is not established.
Quick Recap
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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