TZ81UH - 80% Upflow/Horizontal Gas Furnace 


The Thermal Zone® 80% Upflow/Horizontal Furnace provides comfort without the sound generated by most upflow/horizontal 80% gas furnaces. 

  • Compact Cabinet
    With a cabinet height of just 34" for all capacities, space requirements are kept to a minimum and installations are easier.
  • Furnace Control
    This solid state integrated furnace control is the "brain" of this dependable furnace - controlling the blower and inducer motors for heating capacity and efficiency.
  • Patented Heat Exchanger
    Extremely compact the heat exchanger provides a faster, more efficient transfer of heat. The aluminized and stainless steel construction is so reliable, it’s backed with a 20 year limited warranty.
  • Induced Draft Motor
    This draft inducer, which was specifically designed for this gas furnace, quietly provides air for combustion while simultaneously venting outdoors the products of combustion from the furnace heat exchanger.
  • In-Shot Burners
    Regulated the air/gas mixture
  • Adjustable Air Speed
    Thanks to adjustable controls for the blower, your technician can precisely match airflow to the specific comfort requirements of your home
  • Quiet Design
    To help improve the sound quality of the furnace, we re-engineered the door and top-plate to provide a sound barrier between the furnace's operation and your home.
  • Limited Warranty
    Twenty year heat exchanger limited warranty.  All other parts have a five year limited warranty
C UL US Listed  gama Member  CSA Design Certified
80% AFUE
Heating Capacities from 50,000 to 150,000 BTU/HR