Knowledge & Support

At TCS we strive to consistently deliver a great support experience to our customers. For nearly 40 years we've been working hard each day to keep that promise. Find our most requested resources below.

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a wiring diagram, product manual, frequently asked question and more

Technical Support


Call us for support on any of our products and services

1 (800) 288-9383 (press 2)

Monday - Friday: 7am - 7pm


Most Popular FAQs


How do I become a factory-certified TCS service and/or installation contractor?

Contact your sales representative at 1 (800) 288-9383 for more information on factory training and certification. You can also review the different training we offer as well as our training calendar.

If I have a product I think is not working properly, what should I do?

Call 1 (800) 288-9383 and select Option 2 between 7 a.m. to 7 p.m. CST while you are standing in front of the thermostat or controller in question.

How do I open an account?

If you have never purchased from TCS before, call (800) 288-9383 and speak to a sales representative. You can purchase from us immediately using a credit card. If you wish to purchase on an open line of credit, you must first submit a credit application and obtain approval. You can download a credit application here. Submit the completed credit application via email to: ar@tcsbasys.com. Approval can take up to 10 business days.


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Feel free to call us with any questions!

TCS Toll-free

1 (800) 288-9383 (press 2 for support)