To upgrade the standard programmable thermostat (M429) to a programmable touchscreen thermostat, visit http://tilewarming.com and purchase the $170.00 touchscreen thermostat (M429-TS). Once you receive your new thermostat, send back the thermostat you received with your original Amazon order to the following address (You are responsible for paying return shipping costs), and you will receive a credit of $125.00 on your earlier order of $170.00, making the total $45.
Send thermostats for credit to:
4137 South 500 West
Murray, UT 84123
NOTE: Please properly package thermostat to ensure that it does not get damaged in return shipping. Use a shipping method that allows for tracking of the unit to verify delivery. No express shipping is required.