STEP 9" - Heating narrow areas

STEP 9" (22.9 cm) wide radiant heating element is designed for areas that require more narrow elements, 9” instead of 12” (30 cm) due to available width.

Heating narrow areas

STEP 9” (23 cm) has a higher wattage than STEP Residential™; the heat output is equivalent to STEP Commercial™.

This element is installed in applications that require more heat output due to a higher heat loss, e.g. on stairs, in tub edges, in shower benches, etc. This radiant heating element can also be installed under the subfloor when spacing between joists is too narrow.



  • Technical Specifications

  • Features

Model: EP-30-22W-24V
Heating Element type: Positive Temperature Coefficient (PTC) semi-conductor polymer
Width: 9" (229 mm)
Length: Cut to order
Max. Element Length: 33ft (10 m)
Weight: 0.18lb/ft (0.27 kg/m)
Thickness: 3/64" (1.2 mm)
Output Wattage (at 24VAC):  6.8 W/ft (22W/m) @68°F (20°C)
6.3 W/ft (21 W/m) @86°F (30°C)
Nominal Resistance: 85 Ω/ft (26 Ω/m) @68°F (20°C)
Primary Draw on 230V: 0.03 amps per foot (0.305 mm)
Strong, thin and flexible element
Designed for areas that require more narrow elements and extra heat output
Ideal for both renovation and new construction
Operates on 24 volts (AC/DC); Connect to a power supply, solar or wind power
Compatible with any floor covering including, tile, stone, wood, laminate, resilient and carpet.
Self-regulating; As the material gets warmer, less electricity passes through the plastic – therefore it is extremely energy-efficient
Easy to install; roll out the elements and cut to size on the job site, connect wires to power supply and elements
Maintenance-free when installed

About Us

Electro Plastics, Inc. dba STEP Warmfloor® is a US manufacturer of electric radiant underfloor heating, roof de-icing and snow melt systems. The company's headquarters is located in Saint Louis, Missouri, U.S.A. This 35,000 sq feet LEED registered building is a "living laboratory" as proof of the comfort properties and energy efficiency of STEP Warmfloor®. 


Our radiant heating products are ETL listed, have the CE marking and conform to ANSI/UL:

 intertek etl small    Cemark small



Contact us

  • Address: 11147 Dorsett Rd., Maryland Heights, MO 63043-3505.
  • Toll-Free: 1-877-STEPTEC(783-7832)
  • Tel: +1-314-426-3555
  • Fax: +1-314-426-3556