Rollover image above to zoom

Deluxe Non Programmable 2 Heat/1 Cool Stage Deluxe Electronic Thermostat with Automatic/Manual Selec

Price: $126.11
Excl. Shipping
SKU: THE8511G1021
(See Product Details Below for Manufacturers Part Numbers)
Discount Shipping

Our volume UPS discounts are passed-on directly to you for the lowest possible shipping rates.

Taupe 2 Heat/1 Cool Stage Deluxe Electronic Thermostat with Automatic/Manual Selectable changeover and R,C,W1,W2,E,Y1,G,O/B,L terminals for multistage heat pumps


Deluxe Thermostats provide electronic control of 18 to 30 Vac single stage or multistage heating and cooling systems, including heat pump systems


Liquid Crystal Display (LCD) is backlit and easy to read. Most frequently used keys are located near LCD for quick and easy access to information. Models available with outdoor temperature sensor capability. The sensor is more accurate than a thermometer. Configurable features allow one model to be used to replace many different models. Degree F or C temperature display. Automatic or manual changeover. Electric or conventional heat fan operation. Adjustable heating cycle rate. Adjustable range stops. Minimum off time for cooling compressors and heat pumps protects and extends the equipment life. Easy installation, setup and self-test saves installer setup time. Installer selectable LED on T8511 Heat Pump models. System test simplifies troubleshooting and saves time by overriding the time delays. Setpoints are permanently held in memory (no batteries used) and retained during power outages.

Product Specifications

Application Multistage Heat Pumps

Mounting Horizontal

Changeover Automatic/Manual Selectable

Color Taupe

Stages 2 Heat/1 Cool

Power Method Hardwired

Terminal Designations C, L, OT, OT, R, W2, E, W1, Y1, O/B, G

Switch Positions (Fan) AUTO-ON
Switch Positions (System) EM. HEAT-HEAT-OFF-COOL-AUTO

Switch Type Electronic

Accuracy (F) 1 F

Accuracy (C) 0.5 C

Dimensions (in.) 4 1/8 in. high x 5 1/4 in. wide x 1 9/16 in. deep

Dimensions (mm) 105 mm high x 133 mm wide x 40 mm deep

Setting Temperature Range (F) 40 F to 99 F

Setting Temperature Range (C) 4 C to 37 C

Interstage Differential Temperature (F) 1.7 F

Interstage Differential Temperature (C) 0.9 C

Electrical Ratings 20 to 30 Vac

Frequency 60 Hz;50 Hz

Cycles per Hour Adj. 1,3,6,9 depending on model

Currents (Cooling) 0.02A to 1.5A running; 7.5A inrush

Currents (Heating) 0.02A to 1.5A running; 3.5A inrush

Currents (Fan) 0.02A to 0.5A running, 2.5A inrush

Sensor Element Thermistor


Ambient Temperature Range (F) 40 F to 110 F

Ambient Temperature Range (C) 4 C to 43 C

Operating Humidity Range (% RH) 5 to 90% RH, non-condensing

Replaces Part Numbers:CART88511G1047

I called trying to find out what happened to the rest of my order and was surprised to hear a warm and kind voice willing to do whatever it takes to find answers and follow through with her promise. Amanda is an asset worth holding on to and a credit to your company. She was very professional, helpful and courteous while assisting me with my order. I would most definitely assign her an A+ in customer service."
Donald "Brad" Thomas

I would like to thank you for your hard work in getting us our part in a timely fashion. You were very helpful and you understood the severity of the situation and did a wonderful job in getting the part to us. Thanks again and please share this with your boss! You were outstanding!"
Todd Mills

Share This:
Have Questions?
Our parts Experts are happy to help!

Available Monday to Friday 10am - 6:30pm EST
Email our Parts Experts
Accredited BusinessGo
Amanda I want to thank you, the blower fan work perfectly. Thank you so very much."
Bill K Roberts
Amanda, Thank you very much again, I have been looking for this part for about two weeks and getting very frustrated in the process of the search, you were very helpful!!"
Ken Holm
Why Buy From Us?
110% Lowest Price Guarantee
Over 500,000 Parts in Stock
Same Day Shipping on Orders Received Before 3pm EST (Mon-Fri)
Nationwide Distribution Centers for Fast Delivery
Choose from UPS Next-Day, 2-Day, 3-Day and Ground Service
We Supply Retail and Wholesale
Order from us.
Risk Free, with
Our Triple Guarantee
Guarantee 1
No hassle, 30-day returns policy
Guarantee 2
110% Lowest price guarantee
Guarantee 3
90-day warranty
Sign up for Special Offers Directly from | 1042 N. Mountain Ave., #B546 | Upland, CA 91786
© 2003-2018 All Rights Reserved.