How many watts of patio heater do you need per m²?

Buying a patio heater seems simple, but one question almost always comes up: how many watts do I actually need? If you choose a model with too little power, you'll barely feel any heat. If you choose a model that's too powerful, you'll use unnecessarily much electricity or heat a small space too intensely.

In this blog, we'll explain how many watts you need for your patio, balcony, veranda, or canopy.

Why wattage is important for patio heating

The wattage of a patio heater indicates how much power the device has. Simply put: the higher the wattage, the more powerfully the heater can heat.

However, more watts doesn't automatically mean better. The right power depends on:

• the size of the space;
• whether the location is open or sheltered;
• the mounting height;
• wind and drafts;
• the type of patio heater;
• how close you are to the heater.

Placement is especially important for electric infrared patio heaters. Infrared doesn't heat the air, but rather people and objects directly. This makes the heat feel quick and targeted.

Guideline: how many watts per m²?

As a general guideline, you can use the following:

For a small, well-sheltered spot, 1500W or 2000W is often sufficient. For a veranda or canopy where multiple people are sitting, 2500W is usually a better choice. For larger patios, it's smarter to strategically place multiple heaters rather than using one extremely powerful heater.

Small space: 1500W to 2000W

Do you have a balcony, small seating area, or compact veranda? Then you usually don't need a heavy-duty patio heater. A model of 1500W to 2000W can be enough, especially if the space is sheltered from the wind.

This power is suitable for:

• balconies;
• small patios;
• seating for two people;
• sheltered corners;
• compact canopies.

Pay attention to the placement. Do not hang or place the heater too far from the seating area. With infrared heat: the more directly the heater is aimed at the seating area, the better you will feel the heat.

Average veranda or canopy: 2000W to 2500W

For many households, a patio heater of 2000W to 2500W is the most logical choice. This power is strong enough for a normal veranda or canopy, but still well-suited for private use.

This is often the best choice for:

• verandas;
• canopies;
• lounge sets;
• outdoor dining tables;
• medium-sized patios.

A wall-mounted model is often practical here. You hang the heater on the wall or beam, so it doesn't take up floor space. This keeps your patio neat and safely arranged.

Large patios: 2500W to 3000W or multiple heaters

Do you have a large patio, a wide canopy, or a restaurant patio? Then one heater is often not enough. A 3000W model can be powerful, but the heat needs to be well distributed.

For larger spaces, it usually works better to use multiple patio heaters. This prevents one spot from getting too hot and another spot from remaining cold.

Examples:

• one heater above a small seating area;
• two heaters along a long dining table;
• multiple wall-mounted models distributed across a restaurant patio;
• hanging models above tables or lounge areas.

For restaurants, this is extra important. Guests want not only warmth, but also comfort. Even distribution ensures a better patio experience.

Sheltered or open patio makes a big difference

A patio heater works better in a sheltered environment. Wind and drafts make heat feel less comfortable, even with infrared heating.

A 2000W heater can work fine under a dense canopy, while the same heater on an open patio feels less powerful.

Therefore:

• sheltered canopy: less power needed;
• open patio: more power or multiple heaters needed;
• lots of wind: place heater closer to the seating area;
• glass sliding doors: heat lingers better.

Do you have an open patio? Then opt for a more powerful model or combine multiple heaters.

Also pay attention to the mounting height

Not only the wattage determines how much heat you feel. The height at which you hang the patio heater is at least as important.

If you hang the heater too high, the heat will be less intense. If you hang it too low, it can become too hot or uncomfortable.

For wall-mounted models, a height between approximately 1.8 and 2.5 meters is often practical, depending on the model and the situation. For hanging models, you should especially pay attention to sufficient distance from tables, chairs, and flammable materials.

Always check the mounting instructions for the specific model.

What's better: one powerful heater or several smaller ones?

For small patios, one heater is often sufficient. For larger spaces, using multiple heaters is usually smarter.

One powerful heater has the disadvantage that the heat comes from one direction. As a result, one person may feel a lot of heat and another almost none.

Multiple heaters provide:

• better heat distribution;
• more comfort for multiple seating areas;
• more flexible use;
• more professional appearance;
• fewer cold spots.

For restaurants, verandas, and long tables, this is usually the best solution.

Does a higher wattage consume much more electricity?

Yes, a patio heater with more watts consumes more electricity when it's at full power. A 3000W heater will consume more when in full use than a 2000W model.

But that doesn't automatically mean that a heavier model is always more expensive. If a more powerful heater heats the space faster and more comfortably, you might use it for a shorter period or at a lower setting.

That's why heat settings are useful. You can start at a higher setting and then switch back once it's comfortable.

Which patio heater suits your situation?

As a simple guideline, you can use this:

• Balcony or small seating area: 1500W – 2000W
• Normal canopy: 2000W – 2500W
• Spacious veranda: 2500W – 3000W
• Restaurant or large patio: combine multiple heaters

If you're unsure between two power levels, usually choose the more powerful model with multiple settings. This way, you can adjust the heat to the weather, the space, and the number of people.

Conclusion: choose power based on space and use

The right wattage primarily depends on the size of your patio and how sheltered the spot is. For small balconies, 1500W to 2000W is often sufficient. For verandas and canopies, 2000W to 2500W is usually a good choice. For larger patios or restaurants, 3000W or a combination of multiple heaters is often better.

A good patio heater isn't just about power, but also about placement, heat distribution, and ease of use.

Therefore, always check which heater suits your patio, veranda, or canopy. This way, you can enjoy your outdoor space comfortably for longer.