*Note: Venstar Phone Controlled* Thermostat: T1800 (Residential) requires the use of Venstar Comfort Call Phone Controller (ACC0433) (not included).

Note: Common wire required. If common wire not available see here for solution.

Need help determining which model you need? Just email us a picture of the backplate of your existing thermostat (with wires still connected if possible), and our tech team will be happy to help determine what you need. Send pictures to support@diycontrols.com.

• Non-programmable
• 3 configurable outputs for maximum flexibility (MISC1, MISC2, MISC3)
• Accepts humidification/dehumidification control module (ACC0430)
• Auto changeover, 2-stage heat, 2-stage cool for use with gas/electric, heat pump, electric & hydronic heat
• Configurable for manual changeover
• Dry contact equipped
• Set point limiting
• Random Start
• Control to, or monitor a second remote sensor
• Display shows both heating an cooling setpoints and room temperature simultaneously
• All setpoints stored in non-volatile memory, and are never lost in power failure (date and time are saved for approx 24hrs.)
• Service filter and service UV lamp indicators
• Red/Green LED shows whether thermostat is calling for heating or cooling
• 5-minute compressor time guard and adjustable cycle limit, both defeatable for servicing equipment
• Outdoor sensor ready (wired or wireless)
• Thermoglow backlit electro-luminous display and backlit color coded keys and legends
• Accepts accessory IR Remote Control system (ACC0431)**
• Accepts accessory EZ Programmer (ACC0432)
• For accessory locking cover use (ACC0620)
• Control range is 35 to 99 deg. F.
• Approximate dimensions: 4.75" x 4.5"

If you need assistance figuring out how many wires you'll need, email us at support@diycontrols.com, with a description of your HVAC system and a picture of your current thermostat wiring connections if possible. Please note that in rare cases, a manufacturer may use proprietary controls that may not be compatible with this thermostat.

No information available at this time. Feel free to contact us for further information.