The heating element on the ProHeat Series Deep Cleaners was designed to heat the solution and water prior to dispersion onto the floor. This feature will not affect the water and solution as they pass through the hose to the tool attachments. The use of warm tap water (up to 120 degrees fahrenheit) and BISSELL cleaning formula will provide your best cleaning results.
For additional information, please call BISSELL Consumer Services at 1-800-263-2535 Monday through Friday from 8 a.m. to 10 p.m. or Saturdays from 9 a.m. to 8 p.m. ET.