Skip to content
“Your Trusted Online HVAC Wholesale for Over 15 Years”
“FREE SHIPPING SITEWIDE! (Certain Conditions May Apply)”
“Prices Too Low to Show! Add Products to Cart to See the Savings!”
(888) 474 - 9966 Call Us Available Now! Closed Now Open Now! Closed Cart
Rheem EcoNet 800 Series Smart Thermostat - CETST800SYS

Rheem EcoNet 800 Series Smart Thermostat - CETST800SYS

Regular price $496.55
Sale price $496.55 Regular price $621.00
View options to check lowest price

IMPORTANT NOTE TO CUSTOMERS:  ALL PARTS ARE INTENDED TO BE INSTALLED BY LICENSED HVAC TECHNICIANS ONLY. INSTALLATION BY ANYONE OTHER THAN LICENSED TECHNICIANS WILL NOT BE COVERED UNDER WARRANTY AND NO TECHNICAL SUPPORT IS AVAILABLE FOR THESE PARTS.



The Rheem CETS EcoNet Control Center Programmable Thermostat includes the same intuitive integrated air and water control as its predecessor and adds support for new high-efficiency products launched after 2015.


Easy to Setup, Easy to Use, Easy to Save:

  • Built with 360+1 design philosophy,it is optimized for Installability, Performance, Integration & Serviceability
  • Controls 65% or more of a typical home™s energy use from a single device
  • Controls 65% or more of a typical home™s energy use from a single device
  • Can reduce energy costs by up to 30%


Standard Features:

  • Added support for new EEV (Electronic Expansion Valve) Air Handlers, Air Conditioners and Heat Pumps
  • Rapid installation with standard 4-wire configuration
  • Automatically configures communicating equipment with optimal settings
  • Adapts to your decor through interchangeable faceplates and adjustable background coloring
  • Full-color, 4.7 LCD touchscreen display with easy-to-read icons and text
  • Dehumidification setpoint of 25% - 99% on AUX contact with selectable reheat feature
  • Convenient date, time and indoor/outdoor temperature indications
  • 5 Operating Modes with Short-Cycle protection (Heat, Cool, Auto, Emergency Heat, Fan Only)
  • 7-Day programmable schedule with Smooth Arrival & Whole Home vacation options
  • Detailed operating status, alarm history, and audible alerts
  • Supports humidifier accessories or over-cool based dehumidification
  • One-touch access to Water Heater Management. (Requires wired connection to EcoNet Enabled Electric or Hybrid Water Heaters)
  • Easily manage from anywhere in the world with the compatible Wi-Fi Module & EcoNet app for smart phones and tablets
  • 5-Year limited warranty from date of installation

Customer Reviews