At CTC, we strive to earn your confidence and deliver comfort. That starts with the best people and training to provide you with trusted service and installation. As part of this focus on excellence, each of our qualified technicians is fully certified by the State of Wisconsin Department of Commerce and attends workshops or training sessions throughout the year. We want you to know that you can depend on their expertise to properly install and service your heating and cooling systems whenever the need arises.

North American Technician Excellence (NATE).

Continuous training and accumulation of knowledge are the benefits of relying on CTC's positive longstanding reputation. CTC stays current with technology including having seasoned technicians who are certified through North American Technician Excellence (NATE). This non-profit organization certifies technicians in air conditioning, heat pumps, gas and oil heating, service for hydronic systems, and geothermal heat pump loop installation. NATE certification testing represents real world working knowledge and has been a priority in the HVACR industry for nearly 20 years.

View Our NATE Certified Listing Here

EPA 608 Universal Certification.

Our CTC service technicians are certified by the United States Environmental Protection Agency (EPA). This important certification covers working safely with refrigerants and is regulated through the Clean Air and Water Act. EPA 608 Universal Certified technicians are required to have a strong knowledge of handling ozone-depleting refrigerants and related EPA regulations.