Sterling sus-4 Suntemp 4 Foot Baseboard Heater Complete with 3/4 Inch Element

Product Description

The Sterling sus-4 Suntemp is a 4-foot hydronic baseboard heater unit that comes complete with a 3/4 inch element. Designed for hot water heating systems in residential and light commercial applications, this baseboard unit delivers reliable radiant heat output using circulating heated water from a boiler. HVAC professionals and plumbing contractors rely on hydronic baseboard heaters like the sus-4 as an efficient, low-maintenance heating solution for rooms and zones. The unit is rated at 2,240 net BTU per hour at a water temperature of 180 degrees and a flow rate of 1 gallon per minute. This BTU output makes it well suited for supplemental or primary zone heating in standard-sized rooms. The enclosure measures 2-13/16 inches in depth and stands 7-7/8 inches tall, fitting cleanly along a baseboard wall without requiring significant clearance modifications. The steel housing comes factory painted white, allowing it to blend into standard interior spaces without additional finishing work. The unit weighs 10 pounds, making it manageable for a single installer during rough-in or replacement work. The included 3/4 inch copper element connects directly to standard 3/4 inch hydronic supply and return lines, eliminating the need for reducer fittings in most installations. Note that a splice plate is not included and must be sourced separately if joining multiple baseboard sections. This unit is compatible with standard residential hot water heating systems and works in gravity and forced-flow configurations. HVAC technicians replacing worn or damaged baseboard sections will find the sus-4 a direct and dependable solution. The Suntemp line from Sterling is a trusted choice for hydronic heating contractors looking for consistent BTU performance and straightforward installation.

• Rated at 2,240 net BTU at 180 degrees water temperature and 1 gallon per minute flow rate
• Factory painted white steel enclosure measuring 2-13/16 inches deep and 7-7/8 inches tall
• Includes 3/4 inch copper element — splice plate not included

Product Highlights

The Sterling sus-4 is a complete 4-foot hydronic baseboard heater with a 3/4 inch element, delivering 2,240 net BTU per hour for efficient zone heating in residential and light commercial hot water systems.

Product Information

Standard Information

• Brand: STERLING
• Manufacturer Part Number: sus-4

Technical Specifications

• Net BTU Output: 2,240 BTU per hour
• Rated Water Temperature: 180 degrees
• Rated Flow Rate: 1 gallon per minute
• Unit Depth: 2-13/16 inches
• Unit Height: 7-7/8 inches
• Unit Length: 4 feet
• Element Size: 3/4 inch
• Finish: Painted White
• Weight: 10 pounds
• Splice Plate Included: No