Superior WRT3920 20" EPA-Certified Wood-Burning Fireplace

WRT3920 Overview

The Superior WRT3920 is the compact Pro Series EPA-certified wood-burning fireplace, the entry point to Superior's high-efficiency lineup. It pairs an advanced non-catalytic combustion system with variable air control to deliver extended continuous burns from a 2.0-cubic-foot insulated firebox that accepts up to 18-inch logs. Standard equipment includes a heavy-duty black steel door with ceramic glass (no separate door purchase required), white stacked textured refractory panels with integrated ash lip, decorative cast iron log retainers, an efficient air-wash system that keeps the glass clean, an insulated outside air kit, and a heat-activated 175-cfm blower for gentle warm-air distribution into the room.

EPA variable-rate certified at 1.8 grams per hour (Phase II) and 3.7 grams per hour (Washington state). Up to 55,000 BTU output and heating up to 1,500 square feet, with up to 86.6% efficiency. The clean-face design and large viewing area make this a versatile choice for compact spaces where a higher-tier WCT model would be oversized. Optional Perimeter Trim Kit ($449) or full Cast Surround Kit ($3,707) for a more decorative installation. Listed to UL-127 and ULC-S610 (PFS report 14-181), EPA Cert. No. 111-17. Approved for use with the IHP Brand 6-inch Snap-Pak insulated chimney (sold separately).

Chimney sold separately. These EPA-compliant fireplaces require Superior Snap-Pak insulated chimney (IHP-brand model Snap-Pak). Most models use 6-inch Snap-Pak; the WCT6940 catalytic model uses 7-inch Snap-Pak. Chimney sections, elbows, terminations, and roof flashing must be ordered separately. Contact Fireplace Insider for chimney sizing assistance.

Important EPA notice: The optional Forced Air Heating Kit was not included in the EPA emissions testing for this fireplace, and per Innovative Hearth Products it cannot be sold as EPA certified when the Forced Air Kit is installed. If your jurisdiction or installation requires maintained EPA certification (such as a Washington state installation, or any installation subject to EPA Phase II compliance), do not select the Forced Air Heating Kit option.

Key Features

• Compact 20-inch EPA-certified wood-burning fireplace, Pro Series
• Non-catalytic combustion-controlled wood burner
• EPA variable-rate certified: 1.8 g/hr Phase II, 3.7 g/hr Washington state
• Up to 86.6% efficiency, up to 55,000 BTU, heats up to 1,500 sq. ft.
• 2.0 cubic foot insulated firebox accepts up to 18-inch logs
• Heavy-duty black steel door with ceramic glass (STANDARD - no separate purchase required)
• White stacked textured refractory panels with integrated ash lip
• Decorative cast iron log retainers
• Efficient air-wash system keeps glass clean
• Insulated outside air kit included (required for use)
• Heat-activated 175-cfm blower included
• Air combustion control with air boost for faster wood ignition
• Ceramic glass for optimum heat transfer
• Cool-to-the-touch heat-resistant door handle
• Optional PTK-BLK Perimeter Trim Kit or full CSK Cast Surround Kit
• Optional Forced Air Heating Kit (note: voids EPA certification when used)
• Uses 6-inch IHP Snap-Pak insulated chimney (sold separately)
• Listed to UL-127 / ULC-S610, PFS report 14-181, EPA Cert. No. 111-17
• Approved for mobile home installation
• 20-year limited warranty (Innovative Hearth Products)

Specifications

Warranty

The Superior WRT/WCT EPA Compliant Wood-Burning Fireplaces carry Innovative Hearth Products' 20-year limited warranty on the firebox body and ceramic glass against thermal breakage. Removable air tubes are warranted for 7 years from installation. Optional blowers and remote controls are warranted for 1 year. Coverage begins at the date of installation and is non-transferable. Damage from abuse, accident, improper installation, normal wear, chimney fires, burning unapproved fuels, or unauthorized modification is not covered. Proof of purchase required.

EPA Certification: These fireplaces are EPA-certified and must be installed and operated according to manufacturer instructions to maintain certification. The optional Forced Air Heating Kit was not included in EPA emissions testing, and using it voids the EPA certification per IHP. Buyers in jurisdictions with EPA certification requirements should not select the Forced Air Heating Kit option.

Downloads

• Brochure
• Snap-Pak Smart Sheet
• Smart Sheet
• Installation Manual
• Specification Sheet
• Forced Air Duct Instruction Sheet