Best Patio Heaters — 13.5kW + Premium (2026)
1 patio heaters matching power “13.5kW” + price “Premium”, hand-picked from UK Amazon listings.
Not sure which one to pick? Read our Best Patio Heater UK (2026) guide.
These 13.5kW premium patio heaters deliver exceptional warmth for your outdoor space.
Designed for serious heating needs, these models offer powerful heat output ideal for patios and larger areas. Engineered with high-efficiency burners and robust construction to withstand the elements, they provide reliable performance throughout the cooler months.
Featuring adjustable flame settings and often incorporating frost protection capabilities, these premium heaters are built to deliver both warmth and style. They're a significant investment designed for enduring use – check Amazon UK for current specifications and retailer offers.
#1 Pick
REALGLOW Spiral Flame Gas Patio Heater 13.5kW (Black with Black Cover)- 13.5kW
£249.99
Pros
- Patented spiral real-flame effect gives a striking visual centrepiece
- Wheels make it easy to reposition around the patio
- Includes hose and 27mm clip-on propane regulator
Cons
- Gas cylinder not included
- Heavy once assembled — best kept in one spot
FAQ
What fuel do these patio heaters use?+
Typically, 13.5kW premium patio heaters run on propane or natural gas. Confirm the specific fuel type before purchasing to ensure compatibility with your existing setup and local regulations.
How long will a single tank/cylinder of gas last?+
The runtime depends heavily on factors such as wind speed, ambient temperature, and heater settings. However, expect approximately 6-12 hours of continuous use from a standard 27kg propane cylinder at full power – always check the manufacturer's estimates.
Are these heaters suitable for freezing temperatures?+
Many models include frost protection settings, designed to maintain operation in near-freezing conditions. However, prolonged exposure to extreme cold may impact performance and efficiency; always refer to the manufacturer’s specifications.
What safety features do these heaters have?+
Premium patio heaters usually incorporate overheat protection, stable base designs, and often include a safety shut-off in case of wind or instability. Always follow all operating instructions carefully.
How difficult are they to assemble and operate?+
While some assembly is required for most models, they’re generally designed for straightforward setup. Operation involves adjusting the flame settings and ignition – always refer to the included user manual for detailed instructions.
What size patio or area are these heaters suitable for?+
Given their 13.5kW power output, these heaters are best suited for patios of at least 10m x 10m, but larger areas may benefit from multiple units for even heat distribution.
Do these heaters require professional installation?+
Installation depends on your gas supply setup. For propane models, a qualified gas engineer is typically required for connection to ensure safety and compliance with regulations. Natural gas connections may be DIY-able depending on local codes.
What kind of maintenance do these heaters need?+
Regularly check the burner assembly for blockages, following manufacturer’s guidance. Periodically clean the exterior surfaces and ensure adequate ventilation around the heater to prevent carbon buildup.
Are there any warranties on these patio heaters?+
Warranty terms vary by retailer (typically Amazon UK). Check the product listing for specific details regarding warranty coverage – it’s usually 1-2 years against manufacturing defects.
Can I adjust the flame height to conserve fuel?+
Yes, most models feature adjustable flame heights. Lowering the flame reduces heat output but also conserves gas. Experiment with settings to find the optimal balance between warmth and fuel efficiency.