Gas Patio Heaters — Maximum Heat for Open Spaces

Gas patio heaters (natural gas or propane) deliver the highest heat output available for outdoor heating — 25,000 to 50,000+ BTU per unit. They are the right choice for open patios, restaurant terraces, and large uncovered areas where electric heaters struggle with wind and cold. Fireplace Choice carries Bromic, Schwank, and SunStar gas heaters with natural gas or propane configurations.

Gas Patio Heater Buying Guide

• Coverage: 25,000 BTU ≈ 200 sq ft; 40,000 BTU ≈ 300 sq ft; 50,000+ BTU ≈ 400 sq ft per unit.
• Fuel: Natural gas needs a dedicated line; propane works with a standard 20 lb tank.
• Operating cost: ~$0.50–$2.00 per hour.
• Best for: Open patios, restaurant terraces, windy spaces, very cold climates.

Frequently Asked Questions

Is natural gas or propane better for a patio heater?

Natural gas is better for permanent installations — lower operating cost and unlimited supply, but requires a gas line. Propane is better for flexibility — no gas line needed, works with a standard 20 lb tank, higher operating cost.

How long does a 20 lb propane tank last on a patio heater?

A 20 lb propane tank typically lasts 9–15 hours at full output on a 40,000 BTU heater. Higher-output heaters (50,000+ BTU) will empty a tank in 7–9 hours.

How many BTUs do I need for my patio?

Rule of thumb: 25,000 BTU covers ~200 sq ft; 40,000 BTU covers ~300 sq ft; 50,000+ BTU covers ~400 sq ft. Add capacity for cold climates, wind, or uncovered spaces.

Are gas patio heaters safe under a covered patio?

Gas heaters can be used under covered patios with adequate ventilation and proper clearance (usually 24+ inches above) — always follow manufacturer specs. Electric is generally safer for fully enclosed spaces.

Can I convert a propane heater to natural gas?

Many models can be converted with a manufacturer-supplied kit. Always use a licensed gas technician and the manufacturer conversion kit — never modify the orifice yourself.