Infratech 21-5110 SL-4027 Slimline Slimline Heater

Product Overview

The Infratech SL-4027 (model 21-5110) is a slimline electric infrared heater that delivers 4000 W on a 277 V supply. It is designed for mounted outdoor and covered-space comfort heating without combustion or on-site emissions.

Key physical details: 63.5" length, 14.4 A at 277 V, and a shipping/nominal weight of 17 lb (product weight listed as 17 lbs).

Key Features

• 4000 W infrared output on 277 V
• Electric infrared — no gas, flame, or combustion emissions
• Slimline profile at 63.5" length suitable for mounted patio and pergola applications
• Listed SKU: 21-5110 (Infratech SL-4027)

Function and intended use

The SL-4027 (21-5110) is an electric infrared comfort heater intended to provide localized radiant warmth for covered outdoor and semi-enclosed spaces. It operates as an electric infrared emitter — producing radiant heat without on-site fuel combustion.

• Delivers 4000 W of infrared heat
• Suitable for mounted installations above seating and pedestrian areas

Electrical and load requirements

This unit is specified for 277 V electrical service and draws 14.4 A. Confirm a compatible 277 V circuit and proper overcurrent protection prior to installation.

• Voltage: 277 V
• Current: 14.4 A
• Operate only on specified voltage; consult a licensed electrician for circuit provisioning

Common applications

The manufacturer lists typical uses for the SL-4027 in commercial and residential settings where infrared comfort heating is required for outdoor or covered areas.

• Restaurant patios and outdoor dining areas
• Residential patios, pergolas, and covered decks
• Commercial and hospitality outdoor spaces

Dimensions and physical details

Use the physical dimensions and weight to plan mounting, clearance, and structural support.

• Length: 63.5"
• Weight: 17 lbs

Controls and compatibility notes

Infratech recommends pairing the heater with compatible Infratech controls or relay panels for switching and zoning. Verify control compatibility and relay capacity when designing the system.

• Pair with a compatible Infratech control or relay panel (confirm model compatibility separately)
• Confirm electrical supply and control method with a qualified installer

Before You Order

Confirm the model number and installation requirements before ordering. Electrical supply, control compatibility, and mounting location must be verified to ensure correct selection and safe installation.

• Confirm the 21-5110 (SL-4027) model and quantity required
• Verify a 277 V circuit and adequate overcurrent protection for a 14.4 A load
• Confirm compatible Infratech controls or relay panel if zone switching is required
• Consult a licensed electrician for circuit and mounting preparation

Ordering from Lumera Electric

Check the purchasing options shown on the Lumera Electric product page for Infratech 21-5110 SL-4027 Slimline Slimline Heater. For project quantities or additional ordering requirements, use Request a Quote and provide the required quantity.