Thermostat Services

Your thermostat acts as the command center for your entire HVAC system, controlling the temperature throughout your home. At Zagros Heating & Air Conditioning, we focus on delivering complete thermostat solutions that help Northern Virginia homeowners achieve comfort while saving energy. Since 2003, our family-owned business has earned trust through our hands-on approach and by treating customers like family. A properly working thermostat is key for both comfort and reducing energy bills, which is why our NATE-certified technicians train extensively on modern thermostat technologies from brands like Carrier, Trane, Daikin, Lennox, Rheem, Honeywell, and Mitsubishi. From upgrading to a smart thermostat that offers remote control to fixing your current unit, our team will assess your needs and suggest the best solution for your home and budget.


We go beyond technical skills with our customer service. We offer clear pricing with free same-day, in-home estimates and will match or beat any valid written competitor estimate. With over 40 years of combined HVAC experience, our Persian-speaking staff provides both skilled and personal service. We back our work with a two-year workmanship warranty and a 100% satisfaction guarantee because we stand behind our quality. As a local, minority-owned business, we care deeply about the Northern Virginia community and value building lasting customer relationships. We provide special discounts for military personnel, veterans, first responders, and senior citizens as part of our community commitment. If your thermostat isn't working right or you want to learn about newer technology options, please contact us