A patio heater can turn a gazebo, pergola or favourite seating area from somewhere you leave at sunset into a space the family can enjoy well into the evening. But the right choice is not always the biggest or hottest model. This buying guide for patio heaters explains how to match the fuel type, heat output and design to your garden, budget and the way you actually use your outdoor space.
Start with your outdoor space
Before comparing features, look at where the heater will live. A small bistro set on an exposed patio needs a different solution from a large dining table beneath a gazebo. Heat rises and wind carries it away, so an oversized heater will not necessarily make an open garden feel warm, while a well-positioned directional model can make a compact seating area much more comfortable.
Measure the usable area rather than the entire garden. Think about where people sit, stand and walk, and leave enough room for the heater's required clearance from furniture, canopies, fences and planting. Always follow the manufacturer's positioning and safety instructions, particularly when using a heater near a gazebo, pergola or other overhead cover.
It also helps to be realistic about the British weather. Patio heaters are designed to take the chill off and extend time outdoors, not to recreate central heating in a windy January garden. Adding shelter from a gazebo sidewall, fence or hedge can make a noticeable difference, provided ventilation and safety clearances are maintained.
Buying guide for patio heaters: choose the fuel type
The main decision is whether electric, gas or a fire-pit style heater suits your garden best. Each can be good value, but they work in different ways.
Electric patio heaters
Electric heaters are often the simplest option for patios close to the house. Plug-in models start quickly, produce no smoke and require no fuel cylinder. Infrared electric heaters are especially useful because they warm people and nearby surfaces directly, rather than trying to heat all the air around them. This makes them a sensible choice for a sheltered table, covered terrace or smaller gazebo.
Look at wattage as a guide to output. Lower-powered models around 1,000W to 1,500W can suit close-range warmth for one or two people, while 2,000W models are generally better for a small seating or dining area. Some heaters have multiple heat settings, which can help you avoid using more electricity than needed on a mild evening.
The trade-off is reach. Electric heaters tend to be more directional than gas models and need a safe, suitable outdoor electrical supply. For occasional use, a freestanding plug-in heater can be practical. If you regularly eat outside, a wall-mounted or ceiling-mounted infrared heater may save valuable floor space. Check the cable length, weather-resistance rating and whether professional installation is required.
Gas patio heaters
Gas patio heaters are familiar for a reason: they provide powerful warmth over a wider area and do not rely on a mains socket. Freestanding mushroom-style and pyramid heaters can be a strong option for larger patios, open dining spaces and garden gatherings where guests are spread around.
Gas output is usually shown in kilowatts (kW). A higher kW figure generally means more heat, but it also means greater gas use. Adjustable controls are worth having, as they let you lower the output when the temperature is less demanding. Consider the ongoing cost and the practicalities of replacing or refilling the gas cylinder before buying.
These heaters must be used outdoors in a properly ventilated area. Never use a gas patio heater inside a house, garage, shed, enclosed marquee or tightly enclosed gazebo. Keep cylinders upright and store them in a suitable well-ventilated outdoor location, following the supplier's guidance. A stable weighted base, hose checks and a sound ignition system are essential features, not extras.
Fire pits and fire-pit tables
A fire pit brings atmosphere as well as warmth. It can make a garden seating area feel more social, particularly for relaxed evenings with family or friends. Wood-burning models offer the crackle and scent of a real fire, while gas fire-pit tables give easier lighting and cleaner control.
The compromise is that open flames need more attention. Smoke from wood can drift towards neighbours, clothing and food, and wind can make a fire pit less predictable. Choose a model with a spark guard where appropriate, place it on a level non-combustible surface and keep children and pets supervised. Fire pits are best for those who value ambience as much as practical heat.
Match the heater design to how you entertain
Freestanding heaters are flexible because they can be moved to suit the occasion, although they need a firm level surface and room around the base. Tabletop electric models are convenient for intimate meals but should be treated as close-range heaters, not a solution for a whole patio.
Wall-mounted heaters keep pathways clear and work well beside a dining area or under a suitable covered outdoor structure. Their fixed position means planning matters: aim the heater towards where people will sit, not towards open lawn or a walkway. Hanging heaters can be useful above a table, provided the supporting structure is suitable and the specified clearance is available.
For larger gatherings, two modestly powered heaters positioned around the seating area can be more effective than one powerful unit at the edge. This also reduces the temptation for guests to crowd too close to a single heat source.
Safety features worth paying for
Price matters, but a patio heater is not a product to choose on cost alone. A few key features improve day-to-day safety and make the heater easier to live with.
A tip-over switch is particularly valuable on freestanding electric and gas models, as it shuts the heater off if it falls. An anti-tilt design and a weighted base improve stability, especially in busy family gardens. For gas heaters, look for a flame-failure device that stops gas flow if the flame goes out. A protective grille reduces accidental contact with hot elements, although it does not make the unit safe to touch.
If you are buying an electric model, make sure it is designed for outdoor use and has suitable weather protection. An IP rating indicates resistance to water and dust. For example, IPX4 generally means protection from splashing water, but it does not mean the heater should be left exposed to heavy rain year-round. Switching off, unplugging and covering or storing the unit when not in use will help it last longer.
Think beyond the purchase price
A cheap heater that is underpowered for your space can become poor value quickly. Equally, a large gas heater may be unnecessary for a small sheltered patio where a compact electric infrared model would cost less to run and take up less space.
For electric heaters, check the wattage and multiply it by your electricity unit price to estimate hourly running costs. A 2kW heater uses 2kWh of electricity per hour at full power. For gas, cylinder size, heater output and the chosen heat setting all affect how long a refill lasts. Manufacturers may provide estimated burn times, but real use changes with wind and temperature.
Choose a finish that suits the amount of maintenance you are happy to do. Stainless steel and powder-coated metal can look smart, though coastal air and winter moisture can still cause corrosion over time. A fitted cover and dry storage during long periods of non-use are sensible investments.
Practical set-up and maintenance advice
Put the heater on flat, solid ground away from overhanging branches, fabric furniture and areas where children play. Avoid placing it directly beside doors, busy routes or loose garden items that could blow into it. For a gazebo or marquee, check both the heater instructions and the shelter manufacturer's guidance before use. Many gas models are unsuitable under canopies, while some electric infrared heaters may be suitable only with stated clearances.
Give the heater a quick check before each use. Inspect cables, plugs, gas hoses, fittings and the base for damage. Keep reflector panels and grilles clean so heat can circulate properly. If an electric heater trips a circuit breaker, smells unusual or has a damaged cable, stop using it until it has been checked. If a gas heater is difficult to ignite or flames burn unevenly, turn it off and inspect it according to the manual rather than repeatedly trying to light it.
Common patio heater questions
Are patio heaters safe under a gazebo?
It depends on the heater and the gazebo. Gas patio heaters generally need open, well-ventilated outdoor space and may not be suitable under a canopy. Some electric infrared heaters can work in covered areas, but only if installed and positioned exactly as the manufacturer states. Never assume that a gazebo automatically provides safe overhead clearance.
Which patio heater is best for a small garden?
A compact electric infrared heater is often the most practical choice for a small, sheltered garden. It gives direct warmth without requiring a gas cylinder and is easier to position near a seating area. A tabletop model may be enough for two people, while a wall-mounted option keeps floor space free.
Can I leave my patio heater outside all year?
A weather-rated heater can cope with normal outdoor use, but leaving any heater fully exposed through winter may shorten its life. Switch it off, disconnect the power or gas supply, clean it and use a suitable cover. Store removable parts in a dry place where possible.
A good patio heater should suit the evenings you want to create, whether that means quiet outdoor meals, family get-togethers or making better use of a gazebo after summer. Choose the safest model for your available space first, then balance heat output, running costs and convenience. That approach will give you warmth where it matters rather than a garden accessory that spends most of the year unused.