Patio Heater Buying Guide

• Electric patio heaters use infrared heat, an energy-efficient heating method that emits warmth through a safe, clean wavelength of heat. This heat is only absorbed by solid objects, transferring heat directly to a person, a piece of furniture, or the floor. 
  Proximity to the heater dictates the amount of warmth felt. 
• Infrared heat doesn’t “blow away,” making it ideal for areas with windy conditions or spaces that cannot contain heat. 
• Unlike some gas heaters, electric heaters have no refillable tanks and are virtually maintenance-free. 
• Heat power output differs by model, but electric heaters are generally an efficient, environmentally friendly option. For information on selecting wattage, see our section on How many heaters does my space need?

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• Liquid propane is a clean-burning fuel source that typically does not depend on a fixed fuel line. 
• Most liquid propane heaters are portable and are often used to heat both commercial and residential outdoor spaces. 
• Most propane heaters warm the air around them—although some brands heat people and objects—making them ideal for large, uncovered areas that need broad coverage. 
• These heaters cover approximately up to a 15-foot diameter, raising people’s comfort level 5-10 degrees. Spacing is recommended from 8 to 12 feet, depending upon weather conditions. 
• Liquid propane tanks are tucked away within the heater, and tank refills are readily available at gas stations, convenience stores, supermarkets, and hardware stores.
• Unlike electric heaters, liquid propane heaters don’t need to be near an electrical outlet and rarely require professional installation.

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• Natural gas heaters provide quick heating for well-ventilated outdoor living areas.
• Natural gas heaters use infrared heat, which radiates directional warmth and increased comfort to outdoor living spaces.
• Natural gas heaters are energy efficient and have low operating costs. 
• Whether freestanding or mounted to a wall or ceiling, natural gas heaters are fixed to a permanent gas line and require professional installation.
• Because natural gas heaters require a permanent connection, they are often used in commercial spaces, offering consistent, dependable heat without the need for 
  tank refueling.
• The ability to run a natural gas line can help dictate the placement of heaters on your property.

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When you buy a patio heater, it’s essential to abide by manufacturer recommendations and talk to your electrician and, if your heater is gas, a plumber to ensure your space is appropriately equipped—before professionally installing anything.

Next, define your space; measure the dimensions and mounting heights of the area you want to heat. Outdoor areas are defined as at least 30% open (front, back, or side walls). If a patio is partially covered, it can trap heat and create a convectional heating effect.

You’ll also want to consider seasonal changes in your geography, proximity to wind and airflow, building codes, and whether the space in question is a new or existing construction.

As a rule of thumb, the higher the wattage, the more warmth (and less “glow”) you’ll get. Generally, the wattage and number of heaters needed will depend on your space’s height and square footage. You can use this simple equation to determine how many Watts you need to heat your space: Cubic feet of area x desired temperature rise = Watts needed.

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Freestanding heaters are generally portable and rarely ever require professional installation. Most freestanding heaters are available with wheels, allowing for easy portability.
Note: freestanding heaters hooked to a natural gas line are
limited in mobility.

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Mounted patio heaters require professional installation to ensure maximum heat output and safety. It’s essential to abide by manufacturer recommendations and talk to your electrician and (if you’re installing a gas heater) a plumber before beginning the installation process to make sure your breaker box can handle the wattage and amperage and electric pull of your patio heaters.  For more information on choosing the correct wattage, see our What wattage should I choose?

Most heaters can be wall, ceiling, or pole mounted and generally all heaters can be exposed to the elements, although you should always consult manufacturer and model specifications to be sure. 

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