About Us

About Us

Our founder and owner Chris Miller grew up in a family-owned contracting business, always admiring the hard work and dedication of his parents. He brings with him over 2 decades of experience in the HVAC field, but more than that his dedication to the community. He’s lived in Williamson County, TX with his family since 2001, and believes strongly in the Miller Climate Control motto of “Our Customers Are Our Neighbors.”

When you work with Miller Climate Control, you are getting more than just a service call to look at your broken down air conditioner or a simple tune-up on your heater. You are getting a community focused, trustworthy HVAC company that focus solely on the Williamson County, TX community. You are more than just an ID number in our computer—you are a valued customer.

"I Didn’t Choose a Career, a Career Chose Me"

Founder Chris Miller discovered his true calling years ago, when offered the opportunity to be a consultant for a family–owned HVAC company. Since then, he has grown Miller Climate Control to be a company that values community above all else.

In addition to this customer focus, he has learned that to be the best HVAC Company possible for his customers, he’d have to have a quality business plan and loyal employees, who he has built up throughout the years through mentorship and sharing best practices.

Our Employees

Our employees are backed with extensive training and experience, NATE and EPA certifications, and the desire to help and support our Williamson County, TX community. When you hire Miller Climate Control, you’re getting so much more than just another HVAC company. You’re getting an organization that:

  • Has made substantial investments in the latest technologies.
  • Require a minimum 40 hours training annually from every employee—including the owner—with a focus on technical knowledge, customer service, and personal development.
  • Is based in and supports Williamson County, TX businesses, charities, and organizations.
  • Dedicates our resources solely to resolving HVAC issues, so that you can rely on specialized knowledge.
  • Values our employees and understands the importance of having a personal growth and development path.


Happy employees mean happy and well–served customers. We are the standard when it comes to customer–focused service and want our employees to be happy to work here, find their job rewarding, and have a desire to give back to the community beyond simply providing a service.

Our Maintenance Agreement

Through our Diamond M Club maintenance membership, you’ll receive specialized services such as Air Advice air monitoring—a service brought to Williamson County, TX exclusively through Miller Climate Control.

We also offer 24/7 emergency services with no overtime rates, and our Diamond M customers receive priority service. And in addition to a quality tune–up, you’ll enjoy significant discounts on repairs and replacement, plus a 90–day "Peace of Mind Guarantee"—with free repairs if your system fails to work within 90 days of your preventive maintenance appointment. Contact us today to learn more!

Join the Diamond M Club

  • No Overtime Rate Year Round
  • No diagnostic charge
  • 15% discount on repairs
  • 5% Discount on Equipment Replacement
  • 90 Day Peace of Mind Guarantee

Contact Us