Nextech Is Proud To Be America’s Largest Independent Self-Performing Commercial HVAC-R/CKE/Lighting/Electrical Service Provider. Since our founding in 1992, our continued focus on Quality, Value, and Integrity have enabled us to create strong relationships with thousands of long-term customer partners. A few exclusives that set us apart from other providers in this industry: - We can service ALL your locations nationwide and provide self-performing coverage throughout the continental US. - We ...