Rinnai FC824 24,000 BTU Vent Free Fan Convector Gas Heater - Choice of Fuel Type

Known for their innovative tankless water heaters, Rinnai also offers the highly efficient FC824 vent-free fan convector gas heater. Designed to heat hard-to-warm spaces, this 24,000 BTU heater (natural gas; 22,000 BTU for liquid propane) evenly distributes warmth with its convection fan. Featuring modulating technology with a gas valve and variable speed blower, it uses only the necessary amount of gas, ensuring energy-efficient heating for your home or business.

Key Features:

• 24,000 BTUs (NG) or 22,000 BTUs (LP) for consistent warmth
• Modulating gas valve and variable-speed blower for optimized efficiency
• Vent-free design—no need for exterior wall installation
• Ultra-efficient 99.9% AFUE rating with virtually no heat loss
• Quiet operation at 44 dB (high) and 30 dB (low)
• Compact design with a cool-to-the-touch cabinet
• Child-safety lock and multiple safety features
• Easy-to-use control panel with LED display and touch-button controls
• Temperature settings from 60°F to 80°F in 2-degree increments
• Timer function for delayed start or auto shutoff

Safety Features:

• Oxygen Depletion Sensor (ODS) shuts off gas if oxygen levels are low
• Overheat switch automatically shuts down the heater if it overheats
• Tilt switch disables gas supply if the heater is knocked over
• Gas supply automatically disables during power outages
• Automatic shutdown if the burner flame is extinguished

Installation Guidelines:

With its vent-free design, the FC824 doesn’t require an exterior wall for installation. However, adhere to these clearance guidelines for safety:

• 2 inches on all sides (top, back, and sides)
• 30 inches in front of the heater

Do NOT install the heater in bedrooms, bathrooms, or areas above 5,200 feet. Ensure flammable items like curtains or clothing are at least 12 inches away.

Control Features:

The top-mounted control panel features touch-button controls for temperature and mode settings. The LED display provides real-time information, including temperature, time, and error codes. A filter indicator alerts you when it’s time to clean the filter. Additional control features include:

• Push-button electronic ignition for added safety
• 24-hour timer for delayed start
• 60-minute timer for automatic shutoff

Available Models:

The FC824 is available in:

• Natural Gas (FC824N)
• Liquid Propane (FC824P) (non-convertible—confirm gas type before purchase)

Why Choose the Rinnai FC824?

This heater is perfect for supplemental heating in homes, apartments, and commercial spaces. Its clean design, quiet operation, and advanced features make it one of the most efficient and user-friendly heaters available. Suitable for modular and mobile homes, it offers safe and consistent warmth without venting requirements.

Important Notes:

Vent-free products cannot be shipped to California. Consult with a licensed professional for proper installation and local regulation compliance.

Find a Local Installer:

For professional installation, find a Rinnai-trained Advanced Comfort Expert in your area.