Best Natural Gas Outdoor Heaters for Year-Round Comfort
Outdoor warmth expands living space beyond four walls, turning backyards and patios into comfortable rooms of their own. This guide spotlights five natural gas heaters designed for outdoor use, spanning patio heaters, space-heating units, and outdoor tankless water heaters. Each option emphasizes safety, durability, and reliable heat delivery, helping you pick the right model for residential decks, commercial patios, and beyond. All selections operate on natural gas and are suitable for outdoor conditions when installed with proper clearances.
| Product | Type | Output | Notable Benefit |
|---|---|---|---|
| Golden Flame 45K BTU Outdoor Patio Heater | Patio Heater | 45,000 BTU | Wide heat span up to 15 ft; anti-tilt safety; mobility wheels |
| Golden Flame Resort 49K BTU Patio Heater | Patio Heater | 49,000 BTU | Rich-Mocha finish; full-length flame; easy-start ignition |
| Mr. Heater Big Maxx MHU80NG Unit Heater | Outdoor Unit Heater | 80,000 BTU | Large space coverage; includes mounting brackets and LP kit option |
| LiberLive Outdoor Tankless Gas Water Heater | Outdoor Tankless Water Heater | 5.3 GPM; 130,000 BTU | LED temperature display; outdoor-ready design; multi-point supply |
| FOGATTI Outdoor Tankless Gas Water Heater | |||
| FOGATTI Outdoor Tankless Water Heater | Outdoor Tankless Water Heater | 8.1 GPM; 180,000 BTU | Remote control panel; four-stage combustion; outdoor durability |
Golden Flame 45K BTU Outdoor Patio Heater
Delivering 45,000 BTU of outdoor warmth, this Golden Flame XL-Series heater uses a wide aluminum reflector hood with stainless burners to cast heat across roughly a 15-foot diameter. The unit can help counter dry air by releasing water vapor during operation. It suits backyards, screened porches, and restaurant patios with appropriate clearances. Start-up is quick via a rapid-spark electronic ignition, and the burner is pilotless when operating on natural gas. A variable heat control knob lets you fine-tune from low to high, while safety features include an automatic tilt sensor that shuts the burner if tipped. The base includes a sand-weight reservoir (up to 25 lb) for stability, with the option to add more weight for windy conditions.
Golden Flame Resort 49K BTU Patio Heater
This resort-inspired model delivers 49,000 BTU of outdoor heat in a Rich-Mocha matte finish. It uses natural gas for a cleaner, more economical heat source and features an infrared radiant emitter screen with a single-piece quartz glass tube for reliable heat delivery. The Easy Start Rapid-Spark ignition provides a quick flame, while the adjustable full flame height offers mood-lit warmth from Romantic-Glo to Lava-Flo. A weather-resistant zippered cover is included to shield the unit from the elements, making it suitable for year-round outdoor use in varied climates.
Mr. Heater Big Maxx MHU80NG Natural Gas Unit Heater
The Big Maxx MHU80NG offers up to 80,000 BTU for substantial outdoor and semi-enclosed spaces, covering around 2000 square feet. The unit measures 29.33 inches long by 15.50 inches wide by 26.37 inches high. It is designed for natural gas and supports vertical venting (Category 1) or horizontal venting (Category 3). The package includes two angle brackets and a liquid propane conversion kit; thermostat, hose, and regulator are not included. This heater is suitable for garages, workshops, or open-air spaces adjacent to buildings, providing robust, steady warmth.
LiberLive Outdoor Tankless Gas Water Heater
Designed for outdoor water heating, this LiberLive unit delivers up to 5.3 GPM with a 130,000 BTU output. It features a stainless steel body for corrosion resistance, an LED smart digital display for precise temperature control (95°F–149°F range), and supports multiple outlets simultaneously. The outdoor-ready design includes wind and weather resistance, making it a reliable choice for homes seeking continuous hot water for showers, kitchens, and outdoor taps without the need for storage tanks.
FOGATTI Outdoor Tankless Gas Water Heater
FOGATTI’s outdoor tankless system delivers up to 180,000 BTU and a flow rate of 8.1 GPM, enabling continuous hot water for multiple outlets. The four-stage combustion system ensures consistent performance, while the bottom-mounted fan reduces smoke backflow and stabilizes combustion in outdoor environments. The unit is designed for outdoor installation and provides reliable hot water in variable weather, with a remote control panel for indoor operation and convenient access from inside the home or business.
Buying Guide
Key Purchase Considerations
- Heat output and coverage: Match BTU or GPM to your space size. Patio heaters with 40–50K BTU work well for patios, while larger spaces may require 80K BTU units or higher. Tankless outdoor models focus on water flow (GPM) and BTU for simultaneous outlets.
- Type and use case: Choose between patio heaters (space heating), outdoor unit heaters, or outdoor tankless water heaters depending on whether you want ambient warmth or hot water on demand.
- Installation and clearance: Confirm required clearances from walls, railings, and combustibles. Some models require professional venting or a dedicated gas line.
- Safety features: Tilt sensors, anti-tip bases, flame sensors, and sturdy mounting options improve safety in wind-prone or busy outdoor areas.
- Durability and weather resistance: Look for corrosion-resistant materials, stainless components, and protective covers for outdoor exposure.
- Energy efficiency and emissions: Gas-fired units vary in efficiency; infrared or radiant designs may feel warmer with less fuel use in certain layouts.
- Maintenance and serviceability: Access to replaceable parts, ignition reliability, and available warranty impact long-term costs.
- Portability vs. fixed installations: Heaters with wheels or simple stand assemblies are easier to relocate, while fixed units may offer better stability and protection.
Types Of Outdoor Natural Gas Heaters
- Patio heaters: Provide ambient warmth for decks and patios, typically tall and cylindrical with a reflector.
- Outdoor unit heaters: Built to heat larger outdoor spaces or semi-enclosed areas; often more powerful and installable on walls or with stands.
- Outdoor tankless water heaters: Supply instant hot water for exterior taps and facilities, improving outdoor usability for kitchens and showers.
Safety And Maintenance Tips
- Install according to local codes and manufacturer instructions; ensure proper ventilation for gas appliances.
- Regularly inspect gas lines, connections, and vents for signs of wear, corrosion, or leaks.
- Keep the area around the heater clear of debris, furniture, and flammable materials.
- Use manufacturer-provided covers or protective housing during harsh weather to extend life.
- Schedule professional servicing when needed, especially for complex unit heaters and high-output systems.
Comparison Snapshot
| Feature | Golden Flame 45K | Golden Flame Resort 49K | Mr. Heater Big Maxx | LiberLive Outdoor Water Heater | FOGATTI Outdoor Water Heater |
|---|---|---|---|---|---|
| Output | 45,000 BTU | 49,000 BTU | 80,000 BTU | 5.3 GPM | 8.1 GPM |
| Type | Patio | Patio | Unit Heater | Tankless Water Heater | Tankless Water Heater |
| Outdoor Suitability | Backyards, patios | Patios, decks | Garages, open spaces | Outdoor water supply | Outdoor water supply |
| Notable Feature | Anti-tilt safety; sand-weight base | All-weather cover; infrared emitter | High BTU; mounting brackets | LED temperature display | Four-stage combustion; remote panel |