Patio Heaters for Restaurants: Fuel Types, Coverage and Code Concerns

Restaurants should choose patio heaters based on coverage area, fuel supply, safety clearances and local fire and building rules. Propane, natural gas and electric infrared units each fit different layouts. Before purchasing, confirm what your jurisdiction, insurer and landlord allow, since regulations on open-flame and gas heaters vary.

Start with rules, not products

Outdoor heaters in commercial settings are regulated. Fire marshals and local codes may restrict the number of propane tanks, set minimum distances from awnings, umbrellas and walls, and require approved placement away from exits. Insurance carriers may have their own requirements. Talk to your local fire department and building department early, ask your insurer about coverage, and keep documentation. Choose heaters that carry recognized safety certifications such as those from accredited testing labs, and follow the manufacturer’s manual.

Heater types compared

Sizing: how much heat do you need

Heaters list output in BTUs for gas models or watts for electric ones. Higher output covers a larger area, but wind and open sides reduce effective heat dramatically. A rule of thumb used by many installers is to allow for a heater per group of tables rather than trying to cover a huge patio with one unit. Consider average winter temperature, wind exposure and how long guests stay. Windbreaks, clear panels or side walls improve performance more than adding raw output.

When comparing, browse commercial propane patio heaters and review their stated BTU rating, tank size and footprint.

Fuel logistics and operating costs

• Propane: Flexible and portable, but tanks need refilling and safe storage. Staff must be trained to swap them.
• Natural gas: Convenient for continuous operation and lower fuel handling, but requires a professional installation and permits.
• Electric infrared: No combustion on site, which can ease some restrictions, but needs adequate electrical capacity and installation by a licensed electrician.

Estimate nightly fuel use and compare it to your expected increase in covers. Heaters can extend seasons and make patios usable, but fuel costs add up. A weatherproof patio heater cover protects units between uses and extends their life.

Safety practices for staff and guests

Place heaters on level, stable surfaces away from combustible materials, tents, low ceilings and overhead awnings. Maintain clearances stated by the manufacturer. Use only the designated fuel and keep tanks upright. Check hoses and connections for leaks with soapy water, and shut off heaters when unattended. Post clear guidelines for staff on lighting, moving and storing units, and never refill or change tanks while guests are nearby. Provide appropriate fire extinguishers and follow carbon monoxide guidance for covered spaces. Gas heaters are generally meant for outdoor use only.

Stability, tip-over protection and durability

Commercial patios are busy, and heaters get bumped. Look for tip-over shutoff, a heavy base, and wheels that lock. Stainless steel construction resists weather and cleans easily, while painted steel can rust if chipped. Check the ignition type; piezo or electronic ignition is easier than manual lighting. Warranty terms for commercial use matter, because some manufacturers limit coverage on commercial installations.

Maintenance routine

Inspect heaters daily before service. Clean emitters and reflectors, check burners and pilot assemblies, and have a qualified technician service them at intervals recommended by the manufacturer. Keep a log of inspections. Store propane tanks outdoors in approved locations, and replace worn hoses promptly.

Layout and guest experience

Heater placement affects guest comfort as much as heater output. Position units near, but not directly over, seating, and avoid blowing heat into aisles where servers pass. Radiant heat feels strongest within a few feet and fades with distance, so tables at the edge of the coverage area may still feel chilly. Offering blankets, windscreens and warm drinks complements the heaters and can reduce how many units you need.

Think about aesthetics and noise. Some heaters have visible flames, while others glow softly or are hidden above. Consider the ambiance you want, and make sure units do not block views or walkways. Evaluate the time it takes to light and warm up, and whether staff can operate the heaters easily during a busy shift. Track usage and fuel costs during the season so you can fine-tune the number of units for next year.

Document your decisions, including product manuals, certifications and permits, in a binder kept on site. Inspectors or insurers may ask for them.

Plan for seasonal demand as well. Many restaurants only need a full heater lineup for a few months, so consider whether you will rent, buy or store units during warmer weather. Storing propane heaters requires approved locations and removing tanks, so check that you have space and procedures. Train new staff at the start of each season, and review emergency steps such as shutting off fuel and evacuating guests. A short written checklist posted near the storage area keeps everyone consistent.

Frequently asked questions

Can I use a patio heater under an awning?

Often not. Many models require significant overhead clearance, so check the manual and local codes first.

Are electric heaters as warm as propane?

Infrared electric heaters warm people directly and work well in sheltered areas, but open patios in strong wind may favor higher-output gas units.

Do I need a permit?

It depends on your area and fuel type. Ask the local fire and building departments before installing.