24 Hour Emergency Service

At Control Tech, we offer 24 Hour Heating and Cooling Emergency Service! You will always speak with a live person. Whether it’s noon on a Wednesday, or 8pm on a Holiday, we will be there for you!  Call (317) 873-3737   Call Now

Family Owned and Operated

Control Tech has been family owned & operated since 1983. The Winters family strives, every day, to ensure our customers are satisfied with our high level of service.  Learn more   Pay Your Bill

We do NOT use subcontractors!

Whether you hire us for service, installations, or inspections, you can rest assured that a Control Tech employee will arrive at your home. Our employees go through an extensive background check.

Family Owned & Operated Since 1983

Control Tech is a residential & commercial heating, air conditioning, and geothermal contractor located in Zionsville Indiana.  We serve customers in Indianapolis and all surrounding communities. Since 1983, Control Tech has been a leader in the HVAC industry. When we say “Family Owned & Operated”, we mean it! With four members of the Winters family working at any given time, we will ensure that your comfort needs are met.  Contact us today for more information regarding any of our products and services at (317) 873-3737 or toll-free at 1-877-448-2248 Call Now

Comfort Systems

Control Tech offers a variety of programmable & smart thermostats. From the most basic, to the most advanced. We even provide thermostats that can be remotely activated from your smartphone, tablet, or PC.

The Ecobee3 Smart Thermostat is the ultimate control. It intuitively understands when to turn your heating or cooling equipment on based on your home’s unique energy profile, the weather outside, and thousands of other data points to make sure you are comfortable at all times! You can install up to 30 remote sensors in your home for the ultimate level of comfort.

Learn More

Mitsubishi-Mr-SlimMitsubishi Ductless Air conditioning and Heating units (also called “Mini-Splits”) incorporate eco-comfort technology, dual and triple-allergen filtration, and are whisper-quiet.  Eco-comfort technology makes these systems smarter in how they use energy and minimizes their impact on the environment. Space-saving design means easy and unobtrusive installation.  Learn more

standby-generatorGenerac™ Residential Whole House Backup Generators offer dependable protection during unexpected power outages. With a complete line of residential generators and transfer switches, Generac provides the ideal solution—safe, reliable, automatic backup power for your home that lets you live your life without interruption.

Zionsville HEPA Filtration SystemThe best possible air-filtration performance.  A true HEPA System — means the entire system has been tested to meet industry standards for particle/bioaerosol filtration.

Learn more

Fresh Air ExchangersThe use of a Healthy Climate® Heat Recovery Ventilator results in effective ventilation for colder climates.

Learn more

We feature the most modern and comfort systems available today from industry leading manufacturers

Alt Text

Alt Text

Alt Text
Alt Text

Apply for Financing

The Wells Fargo Home Projects credit card* is a convenient way to pay for your Home Projects purchases.
*The Wells Fargo Home Projects credit card is issued with approved credit by Wells Fargo Bank N.A., an Equal Housing Lender.

Apply for Financing

Unsurpassed Quality and Service – Since 1983

When we started Control Tech in 1983, it was our goal to provide each customer in central Indiana unsurpassed quality and the highest value in installation and service.  Each performed timely and safely by knowledgeable professionals ensuring full customer satisfaction.

Whether you need routine service, an emergency repair, replacement equipment, or a complete comfort system – you can count on us!  We care, we listen and we know what it takes.  We strive every day to improve our service to you!

Contact us for your free estimate today.



Alan Winters, President & Founder