How Sunheat Patio Heaters Work and How to Keep Them Running

What Sunheat patio heaters are and how they heat outdoor spaces

Sunheat patio heaters are infrared heating units that warm people and objects directly rather than heating the air around them. Unlike traditional forced-air heaters that warm the space itself, Sunheat models emit infrared radiation—the same type of warmth you feel from the sun—which travels outward until it hits a surface or person. This means you feel warm even when the surrounding air temperature is cool, and you don't waste energy heating empty space above your head.

Sunheat makes both propane and electric models. Propane versions use a standard 20-pound tank and produce heat through a burner element, while electric models plug into an outlet and use heating coils or halogen elements. The infrared approach is why Sunheat heaters work well on patios, decks, and covered porches—they're effective in breezy conditions where traditional heaters struggle, and they don't require ducting or venting in the way some other outdoor heating systems do.

The heat output is measured in BTUs (British Thermal Units). Most Sunheat models range from 30,000 to 50,000 BTUs, which is enough to warm a small to medium patio or seating area. The actual coverage depends on the model, the height at which you mount it, and how much wind is present. A unit mounted 8 to 10 feet high typically warms an area roughly 15 feet in diameter effectively.

Key Takeaways

• Sunheat infrared heaters warm people and objects directly, not the air, so they work in breezy conditions and use energy more efficiently than air heaters.
• Propane models need a 20-pound tank and regular refilling, while electric models require a nearby outlet and draw consistent power.
• Cleaning the reflector and heating element every few weeks during use prevents dust buildup that reduces heat output and can damage the unit.
• Propane heaters need a safety inspection before each season and should be stored with the tank disconnected in off-season months.
• Most Sunheat models are designed for outdoor use only and should not be operated indoors, even in garages or covered spaces without full ventilation.

Propane vs. electric Sunheat models: which one suits your setup

Propane Sunheat heaters are portable and don't require an electrical connection, which makes them ideal if your patio is far from an outlet or if you want to move the heater between locations. They run on a standard 20-pound propane tank that typically lasts 10 to 20 hours depending on the heat setting and model. You'll need to monitor the tank pressure and refill it at a local propane supplier or hardware store. Propane heaters produce more heat overall—often 40,000 to 50,000 BTUs—and they work in any weather condition.

Electric Sunheat models plug into a standard 120-volt or 240-volt outlet and produce steady, consistent heat without refueling. They're quieter than propane models and don't produce any fumes or combustion byproducts. The downside is that they're limited by cord length and outlet location, and they draw significant power, so you may need a dedicated circuit. Electric models typically produce 1,500 to 5,000 watts of heat, which is lower than propane but still effective for smaller spaces or as a supplement to other heating.

Choose propane if you value portability and maximum heat output. Choose electric if your patio has a nearby outlet, you prefer low maintenance, and you're heating a smaller area or want a heater that's easier to store indoors during off-season.

Cleaning the reflector and heating element to maintain heat output

The reflector—the curved metal surface behind the heating element—directs warmth outward and downward. Over time, dust, pollen, and debris settle on the reflector and reduce its ability to direct heat. Clean the reflector every two to three weeks during the heating season by turning off the heater, letting it cool completely, and wiping the reflector with a soft, dry cloth or a slightly damp microfiber cloth. For stubborn buildup, use a soft brush or an old toothbrush to gently loosen debris before wiping.

The heating element itself—whether it's a propane burner or an electric coil—also collects dust and can become less efficient. For propane models, turn off the heater and tank, let it cool, and use a soft brush to gently sweep away debris from the burner area. Do not use water or cleaning solutions on the burner. For electric models, unplug the heater and use a dry cloth or soft brush on the heating coil or halogen element. Never spray water directly on electric heating elements.

If you notice the heater producing noticeably less warmth even after cleaning, the heating element may be damaged or the reflector may have developed a crack or dent. Check the manufacturer's manual for replacement part numbers, or contact Sunheat customer support for guidance on ordering a replacement element.

Seasonal maintenance and storage for propane heaters

Before you use a propane Sunheat heater for the first time each season, inspect the hose and connections for cracks, leaks, or corrosion. Apply a thin layer of soapy water to all connection points and look for bubbles—bubbles indicate a gas leak. If you find a leak, do not use the heater; disconnect the tank and contact the manufacturer or a propane service technician. Check that the ignition system works (for models with electronic ignition) by turning on the heater and listening for a spark or clicking sound before the burner lights.

During the off-season, disconnect the propane tank from the heater and store both separately. Store the tank upright in a cool, dry place away from direct sunlight, and keep it away from heat sources and flammable materials. Store the heater itself in a garage, shed, or covered area, ideally under a tarp or in a storage cover to protect it from dust and moisture. Do not store the heater indoors with the tank attached, as propane can leak and create a safety hazard.

If your Sunheat heater will sit unused for more than a few months, run it for 10 to 15 minutes at the start of the next season to clear any dust from the burner and heating element before you use it regularly. This brief warm-up also lets you confirm that the ignition and heat output are working normally.

Troubleshooting common Sunheat heater problems

If your Sunheat heater won't ignite, first check that the propane tank has fuel and is connected securely. For electric models, confirm the outlet is working by plugging in another device. If the tank is full and the connection is tight but the heater still won't light, the ignition electrode may be dirty or damaged. Turn off the heater, let it cool, and clean the electrode area with a dry cloth. If it still won't ignite after cleaning, the ignition system may need replacement—consult the manual or contact Sunheat support.

If the heater produces weak heat, clean the reflector and heating element as described above. Check that the propane tank valve is fully open (turn it counterclockwise until it stops). For electric models, confirm that the outlet is delivering full power and that the heater is on its highest setting. If heat is still weak after these steps, the heating element itself may be failing and may need replacement.

If you smell gas near a propane heater, turn it off immediately, disconnect the tank, and move away from the area. Do not use the heater again until you've had a technician inspect it. A gas smell usually indicates a leak at a connection point or a damaged hose, both of which are safety hazards.

Safety guidelines for using Sunheat heaters outdoors

Sunheat patio heaters are designed for outdoor use only. Do not operate them indoors, in garages, basements, or any enclosed or partially enclosed space, even if you crack a window or door. Propane heaters produce carbon monoxide and carbon dioxide as byproducts of combustion, and these gases can accumulate in enclosed spaces and cause serious injury or death. Electric heaters don't produce fumes, but they still should not be used indoors because they pose a fire risk if they tip over or if flammable materials come into contact with the heating element.

Keep the heater at least 10 feet away from buildings, trees, awnings, and other structures. Do not place it under a roof or overhang unless the space is completely open on all sides and at least 12 feet high. Keep children and pets away from the heater while it's running—the heating element and reflector become very hot and can cause burns. Never leave a running heater unattended, and always turn it off before you leave the patio or go indoors.

For propane models, never refill the tank yourself; take it to a licensed propane supplier. Do not attempt to repair a damaged tank or hose—replace them instead. Store propane tanks upright and away from heat sources, and never store them in a vehicle or enclosed space.

When to replace your Sunheat heater or its parts

Most Sunheat heating elements last three to five years with regular use and proper maintenance. If the element no longer produces heat even after cleaning and troubleshooting, or if it shows visible cracks or discoloration, replacement is necessary. Replacement elements are available from Sunheat directly or from authorized retailers; check your model number on the heater's nameplate to order the correct part.

The reflector can dent or crack if the heater is dropped or struck. Small dents don't affect performance, but cracks or large dents reduce heat output. If the reflector is damaged, you can order a replacement from the manufacturer, though this is often more expensive than replacing the heating element alone.

Propane hoses degrade over time, especially if exposed to sunlight and temperature swings. If a hose becomes brittle, cracked, or develops a leak, replace it immediately. Do not attempt to patch or repair a damaged hose. Replacement hoses are inexpensive and available from hardware stores or online retailers; confirm the connection size and length before ordering.

Frequently Asked Questions

Can I use a Sunheat heater on a covered porch or under a pergola?

Only if the space is completely open on all sides and at least 12 feet high. Propane heaters produce carbon monoxide and need unrestricted air circulation. A pergola with partial shade is fine; a roof or solid overhang is not. If you're unsure, err on the side of caution and use the heater in a fully open area.

How long does a 20-pound propane tank last?

A full tank typically runs a Sunheat heater for 10 to 20 hours, depending on the heat setting and model. Running at full heat uses fuel faster than running at a lower setting. Monitor the tank pressure gauge if your model has one, and keep a spare tank on hand so you don't run out mid-season.

Do I need to drain the propane tank before storing the heater?

No, but you should disconnect the tank from the heater and store them separately. Store the tank upright in a cool, dry place away from heat sources. You do not need to empty it unless you're storing it for more than a year or transporting it long distances.

Why does my electric Sunheat heater keep tripping the circuit breaker?

Electric heaters draw significant power—usually 1,500 to 5,000 watts. If the outlet is on a shared circuit with other appliances, the combined load can exceed the circuit's capacity and trip the breaker. Plug the heater into a dedicated 15-amp or 20-amp circuit, or use a heavy-duty extension cord rated for the heater's wattage if a closer outlet isn't available.

Is it safe to use a Sunheat heater in windy conditions?

Yes, infrared heaters work better in wind than traditional air heaters because they warm objects and people directly rather than heating the surrounding air. However, very strong wind can blow the heater over or push heat away from your seating area. Secure the heater's base or weight it down if wind is strong, and position it so the wind doesn't blow the heat away from where you're sitting.