TZODH – Downflow / Horizontal Oil Furnace


The Thermal Zone® downflow/horizontal oil furnaces provide a variety of airflow arrangements to meet many installation requirements for oil heating. Downflow position is advantageous where ductwork is installed in the slab or crawl space. Horizontal position can be for crawl space, or suspended installations with horizontal airflow.

  • Direct drive blower assemblies for heating and air conditioning applications.
  • A crimped design stainless steel heat exchanger for efficient and reliable heat transfer.
  • Low profile design is lighter, easier to handle, and replaces the old style highboy and lowboy models.
  • Removable flue box to easily access and clean secondary heat exchanger.
  • Easily field convertible from downflow to horizontal right or horizontal left hand air discharge.
  • Blower/motor combinations, cooling coil plenums, return air cabinets, and other air conditioning accessories are available for air conditioning applications.
  • Factory tested prior to shipment; each furnace is operated and checked by factory quality control to reduce problems at installation.
  • Wide selection of models and types for almost any installation.
  • All oil furnace models are factory assembled with burner mounted ready for downflow operation.
  • All models are UL and ULC listed.
  • Adjustable solid state fan cycle control.
  • Solid-state microprocessor control.
  • Indicator light to monitor the burner flame status for improved troubleshooting.
  • Clean-cut solenoid controlled oil pump with pre and post purge to prevent oil dripping before and after burn thereby reducing nuisance odors

Heating Capacities
87,500 to 134,400 BTU/HR
[25.64 to 39.39 kW]

C UL US Listed