Nothing extends your outdoor season like reliable warmth, and electric models have become the go-to choice for decks, patios, and covered porches. A good outdoor electric patio heater delivers instant, flame-free heat, costs little to run, and works in spaces where gas heaters are impractical or unsafe. But wattage, mounting style, and heater technology vary widely, and the wrong pick leaves you cold or overpaying on electricity. This guide explains how electric patio heaters work, the types available, and exactly what to look for so you buy one that fits your space and budget.
- How Electric Patio Heaters Work
- Electric vs. Gas: Why Go Electric
- Types of Electric Patio Heaters
- Sizing and Wattage
- What Running Costs Look Like
- Features Worth Looking For
- Safety and Installation
- Common Mistakes to Avoid
- When to Call an Electrician
- Placement Tips for Maximum Warmth
- Frequently Asked Questions
How Electric Patio Heaters Work
Most electric patio heaters use infrared technology. Instead of warming the air, which drifts away outdoors, infrared heaters emit radiant heat that warms people and objects directly, much like the sun. That makes them efficient outside, where heating the open air is a losing battle. The heating element glows and radiates warmth in a focused zone. Because there is no flame or combustion, there are no fumes, making infrared electric heaters safe for covered patios, screened porches, garages, and other enclosed or semi-enclosed spaces where gas heaters cannot be used.
Electric vs. Gas: Why Go Electric
Electric heaters have real advantages over propane and natural gas models:
- Safe indoors and under cover: No combustion means no carbon monoxide, so they work on covered patios and in garages.
- Instant heat: Infrared elements warm up immediately with no preheating.
- Lower running cost in many areas: Electricity often costs less per hour than propane, and there are no tanks to refill.
- Low maintenance: No burners, igniters, or gas lines to service.
- Quiet and clean: No hissing flame, no fuel smell.
The main tradeoff is that electric heaters warm a more focused area and depend on having an outlet or hardwired circuit nearby.
Types of Electric Patio Heaters
Freestanding Models
These stand-alone units, often on a pole with a base, are portable and easy to reposition. They suit open patios and can be moved into storage. Expect $80 to $300 depending on wattage and build quality.
Wall-Mounted Models
Mounted to a wall and often angled downward, these save floor space and are ideal for smaller patios, entryways, and porches. Many come with remote controls and run $100 to $400.
Ceiling-Mounted and Hanging Models
Fixed overhead, these keep the heat above the space and out of the way, perfect for covered patios, pergolas, and outdoor dining areas. They usually require hardwiring by an electrician.
Tabletop Models
Compact units for warming a small seating area or dining table, best for spot heating one or two people, priced around $50 to $150.
Sizing and Wattage
Electric patio heaters are rated in watts, typically 1,500 watts for a standard plug-in model on a 120-volt outlet, up to 3,000 watts or more for hardwired 240-volt units. As a rough guide, a 1,500-watt heater warms an area of about 100 to 150 square feet effectively. For larger patios, choose a higher-wattage model or use two units. Keep in mind that a standard 120-volt household circuit typically maxes out around 1,500 watts of continuous load, so anything more powerful usually needs a dedicated 240-volt circuit installed by an electrician.
What Running Costs Look Like
Electric heaters are cheap to run compared with many alternatives. A 1,500-watt heater uses 1.5 kilowatt-hours per hour. At an average US electricity rate of about 16 cents per kWh, that is roughly 24 cents per hour, or about $1.20 for a five-hour evening. A 3,000-watt unit doubles that. Compared to constantly refilling propane tanks, electric infrared heat is often the more economical choice for regular use, and there are no fuel runs to the store.
Features Worth Looking For
- Weatherproof rating: Look for an IP-rated (IP44 or higher) enclosure if the heater will be exposed to rain and moisture.
- Adjustable heat settings: Multiple wattage levels let you match output to conditions and save energy.
- Remote control or timer: Convenient for overhead-mounted units and for auto shutoff.
- Tip-over and overheat protection: Essential safety cutoffs, especially on freestanding models.
- Quality element: Carbon fiber and gold-coated infrared elements last longer and heat faster than basic quartz.
Safety and Installation
Electric heaters are safe when used correctly, but respect a few rules. Keep the heater at the clearances the manufacturer specifies from ceilings, walls, and combustible materials like curtains, cushions, and wood. Use only outdoor-rated outlets and avoid running long extension cords, which can overheat; a heavy-duty outdoor-rated cord is the minimum if a cord is unavoidable. Never cover an operating heater. Ensure any outlet is GFCI-protected, as required for outdoor circuits. Mount wall and ceiling units into solid framing, not just drywall.
Common Mistakes to Avoid
Buying an underpowered heater for a large, exposed patio leaves you disappointed, so match wattage to the space. Running a high-wattage heater on an overloaded circuit trips breakers or overheats wiring; check the circuit capacity first. People also use indoor extension cords outdoors, a fire and shock risk, and place freestanding heaters where they can tip onto flammable furniture. Finally, expecting an electric heater to warm a large open, windy area like a gas patio heater does leads to frustration; electric infrared shines in focused and covered spaces.
When to Call an Electrician
A plug-in 1,500-watt heater on an existing GFCI outdoor outlet is fully DIY. Call a licensed electrician for any hardwired ceiling or wall unit, for 240-volt models that need a dedicated circuit, or if your patio lacks a properly grounded, GFCI-protected outdoor outlet. Improper wiring outdoors, where moisture is present, is a genuine shock hazard. Professional installation of a hardwired unit and dedicated circuit typically runs $200 to $600 depending on the wiring run.
Placement Tips for Maximum Warmth
Where you position the heater matters as much as the model you buy. Because infrared warms objects and people directly, aim the unit toward the seating area, not the open sky, and keep it fairly close, generally within 6 to 8 feet of where people sit. Mounting a heater overhead and angling it down covers a dining table or conversation group evenly, while a wall-mounted unit works well for a bench or built-in seating along one side. For an open patio, positioning two lower-wattage heaters at angles gives better coverage than a single unit blasting from one direction.
Wind is the enemy of any outdoor heater, and it affects electric infrared less than convection heat but still matters. Placing the heater on a covered, partially enclosed patio or adding a windbreak such as a pergola, screen, or planters dramatically improves how warm the space feels. The more you shelter the area, the more of the radiant heat reaches the people you want to keep comfortable, and the less energy you waste heating a breeze that carries it away.
Frequently Asked Questions
Are electric patio heaters cheaper to run than propane?
Often yes. A 1,500-watt electric heater costs roughly 24 cents per hour to run, with no tank refills. Actual savings depend on your local electricity and propane prices.
Can I use an electric patio heater on a covered porch?
Yes. Because they produce no flame or fumes, infrared electric heaters are safe for covered patios, screened porches, and garages, unlike gas models that require open-air ventilation.
How big an area does an electric patio heater cover?
A 1,500-watt model effectively warms about 100 to 150 square feet. For larger spaces, choose a higher-wattage unit or use multiple heaters positioned around the seating area.
Do electric patio heaters need special wiring?
A 1,500-watt plug-in model works on a standard GFCI outdoor outlet. Higher-wattage 240-volt and hardwired units require a dedicated circuit installed by a licensed electrician.
An outdoor electric patio heater is the safe, low-maintenance way to extend your evenings outside, especially under cover where gas heaters cannot go. Match the wattage to your space, pick the right mounting style, look for weatherproofing and safety cutoffs, and leave any hardwiring to a licensed electrician.
