Updated:23 October 2026
Rank 1-12 of the best Gas Heaters
Our recommendation Price Customer rating
1. Comparison winner
Portable Gas Heater 4.2kW
Portable Gas Heater 4.2kW
Available immediately
free shipping
  • room heating powered by burning butane gas from an 8–15 kg bottle, so no electricity is required
  • safety features include a flame failure device a tip-over switch and a low oxygen shut-off that automatically turns the heater off if knocked over or if oxygen is too low
  • compact foldable design allowing the heater to fold to one sixth of its full size for easy storage and transport
Our rating
9,9
very good
100+ purchases last month
2. Best value
Easy Shopping® Portable Gas Heater 4.2KW
Easy Shopping® Portable Gas Heater 4.2KW
Available immediately
free shipping
  • heat output adjustable from 1.5kw to 4.2kw for tailored comfort
  • oxygen depletion system enhances safety by preventing low oxygen levels
  • wheels allow for easy transportation between rooms or outdoor spaces
Our rating
9,8
very good
Universal Innovations Manhattan Gas Heater
Universal Innovations Manhattan Gas Heater
Available immediately
free shipping
  • 3.4KW heat output for effective heating
  • equipped with oxygen depletion sensor and flame supervision device for enhanced safety
  • portable design with wheels for easy movement
Our rating
9,8
very good
4. Bestseller
Portable Calor Gas Heater 4.2kW
Portable Calor Gas Heater 4.2kW
Available immediately
free shipping
  • three heat settings ranging from 1.5KW to 4.2KW for adjusting to preferred temperature
  • operates without electricity using 8-15kg butane gas bottle for energy saving and cost efficiency
  • compact design with four swivel casters for easy mobility between rooms
Our rating
9,8
very good
WARMGLOW Living Flame Gas Heater 3.8KW
WARMGLOW Living Flame Gas Heater 3.8KW
Available immediately
free shipping
  • 3.8KW heat output with three adjustable settings for temperature control
  • safety features include oxygen depletion sensor and flame safeguard system for automatic shut-off
  • portable design with smooth-rolling wheels for easy movement and storage
Our rating
9,8
very good
Straame Mobile Gas Heater 4.2 kW, Foldable Indoor Butane Heater with 3 Heat Settings, Push-Button Ignition, ODS & Anti-Tilt Safety, Fits 13/15 kg Cylinder, Regulator & Hose Included, with Castors
Straame Mobile Gas Heater 4.2 kW, Foldable Indoor Butane Heater with 3 Heat Settings, Push-Button Ignition, ODS & Anti-Tilt Safety, Fits 13/15 kg Cylinder, Regulator & Hose Included, with Castors
Available immediately
free shipping
  • maximum heat output of 4.2 kW with three heat settings of 1.5 kW, 2.8 kW and 4.2 kW
  • safety features include an oxygen depletion sensor with automatic shut-off, a flame-failure device, and an anti-tilt switch, plus a mesh guard and internal bottle retainer for stability and protection
  • foldable cabinet for compact storage when not in use; four 360-degree swivel castor wheels allow easy movement between rooms
Our rating
9,6
very good
SIAL Industrial Gas Fan Heater 10KW
SIAL Industrial Gas Fan Heater 10KW
Available immediately
free shipping
  • 10 kilowatt gas heater provides 10594 cubic feet per hour of warm air
  • safety features include overheat protection and automatic gas cut-off
  • designed with a convenient handle for easy transportation
Our rating
9,5
very good
Straame 4.2 kW Portable Indoor Gas Heater
Straame 4.2 kW Portable Indoor Gas Heater
Available immediately
free shipping
  • high heat output for rapid warmth in small to medium spaces
  • safety features include automatic shut-off if the unit overheats or is tipped over
  • lightweight compact design makes it easy to move between rooms and store when not in use
Our rating
9,5
very good
Taylor & Brown 2in1 Portable Gas Heater & Stove with 4 Butane Canisters - Auto Ignition and Carry Handle
Taylor & Brown 2in1 Portable Gas Heater & Stove with 4 Butane Canisters - Auto Ignition and Carry Handle
Available immediately
free shipping
  • two-in-one design provides heating and cooking in one compact unit for versatile outdoor use
  • supplied with four butane gas bottles, ready to use straight out of the box
  • operates with standard butane gas cartridges (included) or can be connected to a propane cylinder (not included) for added versatility
Our rating
9,0
good
Calor GH-ZRA-18 Portable Folding Heater
Calor GH-ZRA-18 Portable Folding Heater
Available immediately
free shipping
  • offers three adjustable heat settings with outputs of 1.5kW, 2.8kW, and 4.2kW
  • supports up to 15kg gas bottles with electric and piezoelectric ignition for quick heating of spaces from 20 to 80 square metres
  • features smooth-rolling wheels for easy portability between rooms
Our rating
8,9
good
Kingfisher Camping Gas Heater
Kingfisher Camping Gas Heater
Available immediately
free shipping
  • 1.3 kW power output for efficient heating
  • designed with safety features like electric ignition and long life ceramic burner
  • portable with compact dimensions and easy swivel body for direction control
Our rating
8,9
good
1.3kW Butane Gas Portable Heater with Ceramic Burner, Built-in Ignition and Temperature Control, Swivel Body, Gas Canisters Not Included, Compact and Lightweight, For Camping
1.3kW Butane Gas Portable Heater with Ceramic Burner, Built-in Ignition and Temperature Control, Swivel Body, Gas Canisters Not Included, Compact and Lightweight, For Camping
Available immediately
free shipping
  • 1.3 kilowatts of heat output from a ceramic burner
  • combined temperature control to set the heat level and help prevent overheating
  • compact and lightweight design with a carrying handle and swivelling body for portable use and flexible heat direction
Our rating
7,5
satisfactory

Similar Gas Heater comparisons

Gas Heaters buying guide: How to choose the right product from the above Gas Heaters test or comparison

Understanding Gas Heaters: The Basics You Need to Know

How Gas Heaters Work

Gas heaters utilise natural gas or propane to generate heat. When you switch on a gas heater, gas flows through a burner, where it is ignited to produce flame and heat. This heat is then transferred to the surrounding space, providing warmth efficiently. Most gas heaters either radiate heat directly into the room or circulate warm air through vents, creating a comfortable environment.

Types of Gas Heaters

There are primarily two types of gas heaters: flued and unflued. Flued gas heaters are connected to an external vent that expels combustion gases outside, making them safer for indoor use. Unflued gas heaters release combustion gases directly into the room. While they are often less expensive and easier to install, it’s vital to ensure proper ventilation to avoid any buildup of harmful gases.

Choosing the Right Gas Heater for Your Space

Assessing Your Room Size

To choose the right gas heater, first, consider the size of the space you wish to heat. A heater that is too small will struggle to warm the area effectively, while one that is too large can waste energy and create unnecessary heat. Measure your room and determine the kilowatt output required based on the square footage.

Considering Your Heating Needs

Next, think about how you plan to use the heater. Will it be a primary source of heat for long periods, or a supplementary one for quick warmth? Depending on your needs, you may want a more powerful model for continuous use or a portable unit that can be relocated to different areas as needed.

Key Features to Look for in a Gas Heater

Energy Efficiency Ratings

Look for models with high energy efficiency ratings. Modern gas heaters often come with features like adjustable thermostats, timers, and even room sensors that help optimise performance and minimise energy consumption. These features not only save on utility bills but also reduce environmental impact.

Safety Features

Safety should be a top priority when selecting a gas heater. Check for essential safety features like automatic shut-off systems, flame failure devices, and oxygen depletion sensors that turn off the heater if oxygen levels drop too low, ensuring your safety while using the heater.

Benefits of Using a Gas Heater vs Other Heating Options

Cost-Effectiveness

Gas heaters are often more cost-effective compared to electric heaters, especially in regions where natural gas rates are lower. This can lead to significant savings on your energy bills, making gas heaters a popular choice for many households.

Quick Heating Capability

Gas heaters provide virtually instant heat, making them ideal for those chilly mornings or evenings when you want immediate warmth. Unlike electric heating options that take time to warm up, gas heaters are ready to go as soon as you switch them on.

Our Top Picks for Gas Heaters: A Quick Overview

Best for Large Spaces

For larger areas, we recommend the X model, known for its robust heating capabilities and high energy efficiency. Its adjustable settings allow you to customise the heat output to your preference.

Best Portable Option

If you need something portable, the Y model is lightweight and easy to move from room to room. It combines efficient heating with safety features, making it a fantastic choice for versatile use in different spaces.

Table of contents
  1. Understanding Gas Heaters: The Basics You Need to Know
  2. Choosing the Right Gas Heater for Your Space
  3. Key Features to Look for in a Gas Heater
  4. Benefits of Using a Gas Heater vs Other Heating Options
  5. Our Top Picks for Gas Heaters: A Quick Overview

Overview

1. Comparison winner
Portable Gas Heater 4.2kW
Our rating
9,9
very good
Portable Gas Heater 4.2kWAvailable immediately
2. Best value
Easy Shopping® Portable Gas Heater 4.2KW
Our rating
9,8
very good
Easy Shopping® Portable Gas Heater 4.2KWAvailable immediately
Universal Innovations Manhattan Gas Heater
Our rating
9,8
very good
Universal Innovations Manhattan Gas HeaterAvailable immediately
4. Bestseller
Portable Calor Gas Heater 4.2kW
Our rating
9,8
very good
Portable Calor Gas Heater 4.2kWAvailable immediately
WARMGLOW Living Flame Gas Heater 3.8KW
Our rating
9,8
very good
WARMGLOW Living Flame Gas Heater 3.8KWAvailable immediately
Straame Mobile Gas Heater 4.2 kW, Foldable Indoor Butane Heater with 3 Heat Settings, Push-Button Ignition, ODS & Anti-Tilt Safety, Fits 13/15 kg Cylinder, Regulator & Hose Included, with Castors
Our rating
9,6
very good
Straame Mobile Gas Heater 4.2 kW, Foldable Indoor Butane Heater with 3 Heat Settings, Push-Button Ignition, ODS & Anti-Tilt Safety, Fits 13/15 kg Cylinder, Regulator & Hose Included, with CastorsAvailable immediately
SIAL Industrial Gas Fan Heater 10KW
Our rating
9,5
very good
SIAL Industrial Gas Fan Heater 10KWAvailable immediately
Straame 4.2 kW Portable Indoor Gas Heater
Our rating
9,5
very good
Straame 4.2 kW Portable Indoor Gas HeaterAvailable immediately
Our product comparisons are:
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Our tests and comparisons are objective and fact-based. Manufacturers have no influence on the ratings. We aim to provide greater transparency in the market, thereby promoting product quality.
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In our tests & comparison tables, we only include products that meet our minimum standards. This ensures that you can find the perfect product for your needs from a wide selection.
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