TS Midsize Series

10 to 20 kW

The TS Midsize Series boilers are designed to meet the needs of all your hydronic heating applications. WarmFlo® temperature control allows you to select a wide range of water temperature outputs. Modulating element control allows for precise water temperature control in high water temperature set point applications such as baseboard and radiator heat. This series is also ideal for multi-zone radiant floor applications where water flow can vary by zone. For efficient, reliable operation, our staging models are perfect for low temperature one and two-zone systems. Enable outdoor reset and your Electro-Boiler can anticipate your heat demand, increasing or decreasing water temperature for even greater operating efficiency.

The TS Midsize Series boiler is a compact, wall-mount package, weighing just under 80 pounds. These units are the perfect fit when used in smaller mechanical rooms where equipment space is limited.


  • Quiet DC power relays
  • Digital temperature sensor
  • Element staging
  • Element modulation (EB-MX Series only)
  • Outdoor reset (EB-MX Series only)
  • Simple installation
  • Wall-mounted
  • Circuit breaker disconnect
  • Optional stainless steel vessel
  • ASME stamped vessel (built in accordance to ASME Section IV)
  • 20-year element warranty
  • 20-year vessel warranty


  • Radiant floor heat
  • Garage heat
  • Slab on grade homes
  • Radiant panel
  • Workshops
  • Basements
  • Upper level
  • Baseboard
  • Pole buildings
  • Staple-up radiant
  • Radiators
  • Snowmelt

Available Literature/ Specification Sheets