Enerco HSSVFRD20 Vent Free Infrared Heater 20000 Btu/h

Product Description

The ENERCO HSSVFRD20 is a vent-free infrared radiant heater rated at 20,000 BTU/h, designed for supplemental space heating in residential and light commercial applications. It uses radiant or infrared heat transfer to warm objects and occupants directly rather than cycling air, delivering near-instant warmth with no flue or chimney connection required. The unit includes an electronic push-button ignition, a thermostatic control with five settings, and a built-in low-oxygen shutoff sensor. A blower rated at 185 CFM is included to distribute heat across the space. Installation hardware for both floor and wall mounting is included in the box. Licensed HVAC or gas technicians are the appropriate trade for final connection and commissioning.

The HSSVFRD20 is suited for uninsulated or semi-conditioned spaces such as garages, basements, workshops, and cabins up to approximately 500 square feet. It accepts either natural gas or liquid propane, making it adaptable to the available fuel supply at the job site. The unit runs without a dedicated electrical circuit for the burner itself, though the blower fan does require electricity. This makes it a practical option for locations where power reliability is a concern. The natural gas variant is available as model HSSVFRD20NGBT. Note that vent-free heaters cannot be shipped to California, and local codes and regulations must be consulted prior to installation.

Key Features

• 20,000 BTU/h infrared radiant output for spaces up to 500 square feet
• 99.9% AFUE rating for efficient fuel utilization
• Built-in low-oxygen shutoff sensor for safe operation in occupied spaces
• Electronic push-button ignition with AA batteries included
• Thermostatic control with five temperature settings
• 185 CFM blower included for improved heat distribution
• Wall mount bracket and base feet included for flexible positioning
• CSA and ANSI certified construction

Compatibility

The HSSVFRD20 is compatible with natural gas and liquid propane fuel supplies. The natural gas configuration is available as model HSSVFRD20NGBT. Designed as an OEM-style vent-free infrared radiant heater for floor or wall mount supplemental heating installations.

Installation Notes

Installation and gas line connection must be performed by a licensed gas technician or HVAC professional in accordance with local codes, NFPA 54, and the manufacturer instructions. Shut off the gas supply completely before servicing or connecting the unit. Maintain required clearances: 36 inches above the heater to the ceiling, 3 inches from the floor when using base feet, and 10 inches to each side wall. When wall mounting, position the unit at a height of 36 inches from the floor. Keep all flammable materials, furniture, and textiles outside the required clearance envelope at all times.

Technical Specifications

• Heating Output: 20,000 BTU/h
• AFUE: 99.9%
• Blower Airflow: 185 CFM
• Ignition Type: Electronic push-button
• Control Type: Thermostatic, five settings
• Fuel Type: Natural Gas or Liquid Propane
• Venting: Vent free
• Flame Type: Infrared / Radiant
• Gas Connection Size: 0.5 inches
• Manifold Pressure: 4.5 inches w.c.
• Inlet Gas Pressure Minimum: 9 inches w.c.
• Inlet Gas Pressure Maximum: 14 inches w.c.
• Clearance Top to Ceiling: 36 inches
• Clearance Bottom to Floor: 3 inches
• Clearance to Side Wall: 10 inches
• Installation Type: Floor or Wall Mount
• Width: 20 inches
• Depth: 8 inches
• Height: 24 inches
• Net Weight: 27 pounds
• Certifications: CSA, ANSI

Standard Information

• Brand: ENERCO
• Manufacturer Part Number: HSSVFRD20