Electric patio heaters suit smaller, covered spaces and skip combustion; gas units throw more heat for open areas but need fuel and ventilation.
Standing in a cool backyard, you want the warmth to start. The real fork in the road for electric vs gas patio heaters comes down to one thing: how much open air you need to heat. Electric models convert nearly all their power into radiant heat with zero fumes, while gas units push out far more BTUs but carry fuel and ventilation requirements. Here’s how to match the heat source to your patio.
Heat Output: Where Gas Pulls Ahead
British Thermal Units per hour (BTU/hr) measure raw heat output, and this is where the two types separate most clearly.
That gap explains the use cases perfectly: a gas heater warms a large, open deck where heat dissipates quickly; an electric unit covers a cozy corner or a patio with a roof overhead that traps the warmth.
Fuel, Setup, and the Practical Differences
The fuel source changes everything about installation and daily use. Electric heaters run on your home’s current, which makes them simpler to place near an outlet. Gas heaters need either a propane cylinder or a natural gas line, plus a compatible tank setup that matches the unit’s pressure requirements.
Propane tanks for patio heaters follow standard sizing. Heaters run on different fuel types, so match the unit to propane or natural gas before you buy.
Modern gas heaters include safety hardware worth knowing. Look for a flame failure device, which cuts the gas if the flame goes out, and an anti-tilt switch that shuts things down if the unit tips. Both features are standard on quality models and non-negotiable for safe operation.
Running Costs and Upfront Price
Prices differ as much as the heat output. Electric units land well below the premium gas models, but the gap reflects capability, not markup.
Gas heaters command a serious premium. You’re paying for raw heating muscle, build quality, and the ability to warm a truly open space.
| Feature | Electric Heaters | Gas Heaters |
|---|---|---|
| Heat output (freestanding) | 85–10,000 BTU/hr | 5,000–40,000 BTU/hr |
| Heat output (overhead) | 5,000–21,000 BTU/hr | 10,000–160,000 BTU/hr |
| Fuel source | Home electrical outlet | Propane cylinder or natural gas line |
| Combustion on-site | None | Yes, with CO risk |
| Typical price range | $500–$700 | $1,500–$2,300+ |
| Best setting | Small, covered patios | Large, open areas |
Both heater types must follow CPSC safety guidance.
Safety Rules That Apply To Both
Electric and gas heaters carry separate hazard profiles, and CPSC guidance spells out the rules for each.
Fuel-burning heaters add carbon monoxide risk.
Ready to compare specific models side by side? Our tested roundup covers the best electric patio heaters on the market with hands-on notes to narrow your choice.
Here’s the honest bottom line for your yard: if your patio sits under a pergola, awning, or any partial cover and you want simple on-demand warmth, an electric unit delivers clean heat with zero refueling. If you entertain on an open deck and need to push warmth across a wide space, a gas heater earns its higher price and its fuel chore.
FAQs
Which type of heater is cheaper to run?
Electric heaters convert nearly all their energy into heat, but electricity costs more per BTU than propane or natural gas in most regions. Gas heaters lose some energy during combustion but the fuel itself is cheaper per unit of heat. The biggest factor is your local utility rates, so compare your electricity price against propane delivery costs.
Can I use a propane patio heater under a covered porch?
Check the clearance specs in your manual first. Many propane heaters require several feet of overhead clearance and good airflow to prevent heat buildup and carbon monoxide risks. A covered porch with a low ceiling often fails those clearance requirements, making an electric heater the safer pick for that spot.
Do electric patio heaters need a dedicated circuit?
Most 120-volt models plug into a standard wall outlet, but high-wattage units pull enough current that the circuit should serve few other appliances. CPSC guidance warns against power strips or extension cords, so plan the placement near a real outlet. Larger 240-volt models need professional wiring in most cases.
References & Sources
- CPSC. “Stay Safe While Staying Warm This Winter.” Official guidance on portable heater placement, outlets, and fuel safety.