Rollover image above to zoom


Price: $187.77
Excl. Shipping
SKU: THE8635L1013
(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.


Use up to three thermostats on one system with up to 2Heat/2Cool with required W8635A or W8635B EIM and up to three zones of control with the W8703A.

EnviraCom Communicating Programmable Thermostat

seven-day programmable

programmable fan

power method: hardwired

on demand continuous backlight display

filter indication timer

changeover: AUTO or MANUAL

need one thermostat per zone (if there is a zone system)

Honeywell T8635L Thermostat System

Use with the W8635A,B Equipment Interface Module (required) for single or multistage conventional or heat pump applications.

Use with the optional W8703A Damper Interface Module for forced air zoning applications as part of the new Networked zoning system.

Use with the optional W8735B Telephone Access Module to control your heating and cooling system remotely.

Use with gas, oil, electric or heat pump systems.

Full seven-day program capability; different schedules and temperature setpoints may be selected for daily to match any schedule.

Copy key makes programming easier and faster.

Easy temporary temperature setpoint changes for current period, vacation hold (1 to 255 days) or indefinite hold adds comfort and energy savings.

Most frequently used keys are located by the Liquid Crystal Display (LCD) for quick and easy access to information.

Back lighting the large display makes the LCD very easy to read. Selectable between on-demand and continuous.

Outdoor temperature sensor capability when used with the C7089B Outdoor Temperature Sensor.

Setpoints are permanently held in memory (no batteries used) and retained during power outages.

T8635L1013 (T8635L 1013) Microelectronic communicating thermostat

W8635A 1006 (W8635A1006) for non heat pump systems up to 2 heat 2 cool

W8635B 1004 (W8635B1004) for heat pump systems up to 2 heat 1 cool

W8735B 1003 ( W8735B1003 ) - Telephone access module for the T8635L1013 communicating thermostat.

Replaces Part Numbers: CART8635L1013

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.