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Rinnai FC Series 19" 24K BTU Fan Convector Vent Free Gas Heater

Rinnai FC Series 19" 24K BTU Fan Convector Vent Free Gas Heater

Regular price $1,369.00
Regular price Sale price $1,369.00
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You may only know of Rinnai for their tankless hot water heaters but they also have an extremely efficient line of vent-free fan convector gas heaters. The FC824 is a great solution for hard to heat rooms. It includes a convection fan that helps to evenly distribute the 24,000 BTUs (NG; 22,000 BTUs LP) of warmth throughout your space. It features modulating technology which includes a modulating gas valve and a variable-speed blower. In combination, this allows the furnace to use the exact amount of gas needed to produce the heat required for your space. Because it is a ventless heater, it does not need to be installed near an exterior wall - you just need to have the gas line located appropriately. Of course, you also need to have the appropriate minimum clearances - which are 2 inches all around (top, back, and sides) and 30 inches in front of the heater.

The FC824 also features Rinnai technology that consistently and constantly monitors the temperature so if a door opens and lets in cold air, it will be regulated automatically for your comfort. Another advantage of being vent-free is the fact that there is virtually no heat loss with this heater. It provides approximately 99.9% efficiency making it one of the most fuel-efficient heating products on the market, not to mention its clean appearance and quiet operation! It has 44dB / 30dB (H/L) noise levels.

The easy to use control panel is located on the top of the unit. The push-button electronic ignition means there is no standing pilot on this furnace, offering an additional layer of safety for you and your family. The touch button controls to set your temperatures and modes are clearly labeled and easy to use. The temperature settings range from 60°F - 80°F in two-degree increments. It also has a timer function to allow you to delay the start of the heater for up to 24 hours as well as a 60 minute time delay to turn the furnace off. The LED Temperature Display will show either the time of day, temperature, or error code messages. There is even a filter indicator that will light up when the filter needs to be cleaned.

This heater is intended for use as a supplemental heat source. It is suitable for homes, apartments, and condominiums, residential or commercial settings. It is also a modular/mobile home approved. It is forced combustion, forced convection gas heater.

Built for Efficiency

  • Rinnai's Vent-Free Fan Convectors boast an efficiency rating of 99.9%. The FC824N's vent-free system ensures the distribution of heat that would otherwise be lost, while its temperature output control maintains efficiency when the heat isn't needed.

Flexible Installation Options

  • Without the need for vents or ducts, the FC824N can be easily installed in almost any location in your home.

Protection for Your Family

  • The FC824N features a cool-touch cabinet and a tilt switch to disable the heater when it is knocked over - a major advantage if you have little ones running around your home. The FC824N also includes a control panel lock to prevent unintended operation.

Protection for Your Home

  • Rinnai's Vent-Free Fan Convectors include a variety of protection systems in the event of power failure, low oxygen levels, or overheating, granting you peace of mind whether you're home or away.

Product Note

  • Vent-free heaters are prohibited to be sold or installed in the state of California.


  • Input range 8,000 to 22,000 BTU/hour
  • Ideal supplemental heating solution for room additions, basements, and sunrooms
  • Tilt Switch - Push-Button, Electronic Ignition
  • A cool-to-the-touch cabinet keeps you and your family safe

It features a cool-to-the-touch cabinet and child-safety lock. Other safety features include:

  • Oxygen Depletion Sensor will disable the gas supply if the oxygen level in the room drops to unsafe levels
  • An overheated switch will automatically shut down the unit if it exceeds a predetermined temperature
  • A tilt switch will automatically disable the gas supply if the heater is knocked over. It may also activate if the heater is jolted or picked up while in use
  • In the event of a power failure, the gas supply will be disabled
  • If the burner flame is extinguished, the appliance will shut down


Manufacturer Trade Model Number FC824N
Product Depth 9.4 in / (239 mm)
Product Height 19 in / (482 mm)
Product Width 24 in / (610 mm)
Product Weight 26.5 lb (12 kg)
Gas Type Natural Gas/Propane
Color White
Max BTU Input 24,000 BTU / (7.0 kW)
Maximum Electrical Consumption 29W
Fan CFM Output (High) 215.4
Fan CFM Output (Low) 109.5

*Note: These heaters are NOT field convertible. Please confirm your gas type before purchasing. It is available in Natural Gas (FC824N) or Liquid Propane (FC824P).

Additionally, do NOT install in areas where curtains, drapes, clothing, or other moving flammables are within 12 inches of the appliance. Do NOT install this appliance above 5,200 Ft. Do NOT install this appliance in a bedroom or bathroom.


To connect with a Rinnai-trained installer, you can utilize the Rinnai Dealer Locator by visiting the link: Alternatively, you can directly reach out to Rinnai's dedicated customer support team via the Toll-Free Number: 1 (800) 621-9419.

Documents & Files


3 Year Warranty on Parts

3 Year Labor Warranty

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