• 400 MBH burner shown with 20:1 turndown
  • Shown with air-side duct and one stage gas valve
  • HMA, HMB, HMG & HMD duct heaters are designed to be integrated inside air handling unit only. They are available in many sizes and shapes from 75 to 500 MBH and are offered with on/off, two stages, 5:1 or 10:1 turndown.

CTW indirect fired duct heater Institutional

Customizable burner section
Indoor or outdoor installation

Air: 666 to 5925 CFM / heater

Gas: 90 to 400 MBH / heater

5:1 to 32:1 turndown

These are modular design duct heaters. They are offered with many options including high turndown multi-stage burner technology.


CTW INDIRECT-FIRED DUCT HEATER INSTITUTIONAL   Télécharger le PDF       Voir nos réalisations       Documentations


  • Sturdy 18G galvanized construction
  • In-shot single or dual-stage burner
  • Brand name controls and components
  • 304L SS heat exchanger 


  • Controls and gas-train enclosure
  • In-shot multi-stage burner technology
  • U or W shaped tubes
  • Stainless steel 409HP or 316 heat exchanger
  • Stainless steel 316 cabinet
  • Custom dimensions
  • Multiple heater assemblies
  • Sealed combustion
  • And more...