Quick Facts
- Homeowners seeking backup heating solutions
- Budget-conscious energy savers
- Patio and outdoor space users
- Energy prices volatile - gas heaters offer efficient single-room heating bypass
- Check local regulations: unvented heaters restricted in California and Massachusetts
- Prices range from £79.99 to £399.99 (UK) and $149-$189.99 (USA)
- Stock levels tight for December 2025 - delivery dates slipping past Christmas
A well-researched guide for navigating the gas heater market across US and UK, with critical safety certifications (ANSI Z21.11.2 for US, proper regulators for UK) and real-time stock availability - essential reading before winter purchases.
It is late December 2025. Energy prices are volatile, and the grid isn’t as reliable as it used to be. You don’t need a lecture on thermodynamics; you need heat. A portable gas heater is one of the most efficient ways to bypass central heating costs and warm a single room instantly.
But here is the reality check: The market is flooded with cheap knock offs, misleading specifications, and safety hazards. We have audited the top rated models currently available to separate the reliable workhorses from the dangerous toys. We have also verified current pricing and stock levels as of late December 2025 so you aren’t chasing ghosts.
Important Safety Warning Before You Buy
Before looking at the list, check your local regulations. In the USA, unvented cabinet heaters (common in the UK) are heavily restricted in states like California and Massachusetts. Always look for ANSI Z21.11.2 certification for indoor US use. For our UK readers, ensure your heater comes with the correct 21mm regulator for your butane bottle.
The Top 9 Gas Heaters Verified (2026 Edition)
1. KEPLIN Patio Gas Heater (UK Market)
The Status Check (Dec 2025): This unit is currently listed at a sale price of £79.99, but good luck finding one. It is marked “Sold Out” on the official Keplin store. If you see it restocked, move fastdelivery estimates for similar items are pushing past December 26.
The Editor’s Take: When available, the Keplin is a budget beast. It is built for utility, not aesthetics. It uses a standard LPG tank setup and outputs serious heat (up to 13kW). It is strictly for outdoor patio usedo not bring this indoors.
Why it made the list:
- High Power: 13kW output is enough to warm a medium sized patio group.
- Safety First: Includes an anti tilt switch and automatic safety shut off.
- Build: Weighs ~20kg; stable enough to withstand moderate wind.
2. Calor Provence 3kW Portable Flueless Stove (UK Market)
The Status Check (Dec 2025): Quality costs money. The Calor Provence is currently retailing for £349.00 on the official Calor site, with some retailers like B&Q listing it up to £399.99. Stock is stable at specialist retailers.
The Editor’s Take: This is the heater you buy when you don’t want your living room to look like a garage. It mimics a traditional wood stove with a realistic flame effect but runs on a 15kg butane cylinder. It is “flueless,” meaning it doesn’t need a chimney, but it does need ventilation. It includes an Oxygen Depletion Sensor (ODS) which is non negotiable for indoor safety.
- Aesthetic: Traditional cast iron stove look without the mess of wood.
- Performance: 3kW output is sufficient for a main living area.
- Safety: Auto shutoff if room oxygen levels drop (ODS).
3. Dyna Glo 30,000 BTU Wall Heater (USA Market)
The Status Check (Dec 2025): Deals are still out there. Menards has this unit on sale for $189.99 through December 24, 2025. Note that online shipping is limited; you may need to check local inventory in cities like Chicago or pickup in store.
The Editor’s Take: This is a favorite for US basements and garages. It uses “Blue Flame” technology, which heats the air (convection) rather than just the objects in front of it (radiant). It pumps out 30,000 BTUs, which is overkill for a small bedroom but perfect for a 1,000 sq. ft. open space. Crucial: It is dual fuel (Natural Gas or Propane), but you must decide your fuel source before installation.
- Capacity: Heats up to 1,000 square feet efficiently.
- Control: Variable knob settings (Low 15k, Med 22k, High 30k BTU).
- Tech: Blue Flame convection mimics a central furnace system.
4. Amazon Basics 46,000 BTU Patio Heater (USA Market)
The Status Check (Dec 2025): A reliable standby. Price is holding steady at $149.00–$149.99. It has amassed over 10,800 reviews with a 4-star average. Delivery dates are currently slipping past Christmas (Dec 27th estimate), so plan accordingly.
The Editor’s Take: If you are shopping in California or Florida for outdoor evening warmth, this is the standard choice. It isn’t fancy, but it puts out 46,000 BTUs. The Piezo ignition is simple, though these starters often fail after a few seasonskeep a long lighter handy just in case.
5. Kingavon BB PG150 4.2kW Cabinet Heater (UK Market)
The Status Check (Dec 2025): This is one of the best value for-money options right now at £82.11 (down from £122). However, stock is criticalretailers like Electrical World reported only 11 units left as of Dec 23. If you hesitate, you will miss it.
The Editor’s Take: The Kingavon is a classic “cabinet heater.” It hides the gas bottle inside the unit, making it fully portable on wheels. It uses ceramic heating plates which provide radiant heat (feels like standing in the sun). Great for spot heating a cold room without turning on the central boiler.
6. NJ H1 Portable Gas Heater (UK/EU Market)
The Status Check (Dec 2025): Prices are fluctuating between £40.90 and £71.90 depending on the seller. Be careful of third-party marketplaces; check if the seller is legit before transferring cash.
The Editor’s Take: This is not a whole room heater. It is a 1.7kW camping buddy. It runs on those small 227g butane canisters (the aerosol style). It is fantastic for fishing trips or a freezing garage workbench, but it will burn through a canister in about 2.5 hours on high. Do not try to heat your house with this.
7. Warmlite 4.2kW Portable Gas Heater (UK Market)
The Status Check (Dec 2025): widely available at B&Q and BargainFox for £60.00–£99.99.
The Editor’s Take: Let’s clear up a massive technical error found in most listings. You will see claims that this heats “105m2” (which is a huge apartment). That is false. The spec is actually 105 cubic meters (m3), which translates to a floor area of about 40-42 square meters. It is still a powerful heater, but don’t expect miracles.
8. Marko Heating Calor Gas Heater (UK Market)
The Status Check (Dec 2025): A solid budget contender retailing around £64.95. It is a direct competitor to the Kingavon and Warmlite.
The Editor’s Take: The Marko is a utilitarian choice. It offers three heat settings (1.5kW, 2.8kW, and 4.2kW). One hidden benefit? It usually comes with the butane hose and regulator included, saving you an extra £15 trip to the hardware store. It consumes about 300g of gas per hour on max, so a 15kg bottle should last you roughly 50 hours of burning on full blast.
9. Thermomate 18,000 BTU Portable LP Heater (USA Market)
The Status Check (Dec 2025): Currently priced at $169.99 on sale. Stock is healthy.
The Editor’s Take: If you are in New York or the Northeast dealing with winter storms, the Thermomate is a great emergency backup. It connects to a standard 20lb propane tank (the BBQ grill kind). The standout feature is efficiency: on the “Low” setting (6,000 BTU), verified tests show it can run for a staggering 69 hours on a single tank. That is nearly three days of continuous heat during a power outage.
- Efficiency: 69-hour runtime on Low is class leading.
- Portability: Locking wheels make it easy to stash away when spring comes.
- Safety: ODS and tip over shutoff sensors included.
