Smart thermostat installation and repair. Upgrade to energy-saving controls today. NATE Certified technicians Licensed in 8 Colorado jurisdictions.
A smart thermostat can save 10-23% on your heating and cooling bills — and On Time Heat & Air installs all major brands including Nest, Ecobee, Honeywell, and Emerson Sensi. We handle the full installation including wiring, Wi-Fi setup, schedule programming, and a walkthrough of all features. We also repair and replace traditional thermostats. If your thermostat is reading the wrong temperature, not responding, or failing to trigger your HVAC system, our technicians can diagnose and fix the issue quickly.
Our NATE Certified technicians have the training and real-world experience to handle any thermostat services job. We hold active licenses in 8 Colorado jurisdictions — Adams, Arapahoe, Aurora, Broomfield, Commerce City, Denver, Douglas, and Jefferson — so we're authorized to work anywhere in the Denver metro. We provide upfront pricing, honest recommendations, and stand behind every job.
Select your city for location-specific thermostat services information:
Fast diagnosis and repair for all AC brands. Same-day emergency service available 24/7.
Professional central air installation and replacement. Free estimates on all new systems.
Expert furnace repair for all makes and models. 24/7 emergency heating repair available.
New furnace installation and replacement. Energy-efficient systems with financing options.
Heat pump installation, repair and maintenance. Year-round comfort, energy-efficient.
Free tips and guides from our NATE Certified team:
A smart thermostat is one of the cheapest HVAC upgrades with the fastest payback. The Ecobee and Honeywell T6 Pro learn your schedule and adjust automatically, saving 10-15% on heating and cooling. For a Denver home spending $200/month on HVAC, that's $240-$360/year — the thermostat pays for itself in under a year.
Most smart thermostats require a C-wire (common wire) for continuous power. Many older Denver homes don't have one. We can run a new C-wire during installation — it takes about 30 minutes and ensures your thermostat stays powered without battery drain or connection drops.
If your thermostat is causing problems — short cycling, won't hold temperature, unresponsive display — it may need replacement rather than just a battery swap. A faulty thermostat can cause your HVAC system to work harder and wear out faster. We diagnose the issue and recommend the right solution.
Common questions from Denver Metro homeowners.
For most homes, a programmable or smart thermostat like the Ecobee or Honeywell T6 Pro offers the best value. Smart thermostats can save 10–15% on heating and cooling by learning your schedule and adjusting automatically.
Thermostat installation runs $150–$350 including the unit and labor. Smart thermostats cost more upfront but often pay for themselves within 1–2 years through energy savings.
Yes. A faulty thermostat can cause short cycling, uneven temperatures, no heat or cooling, and higher energy bills. If your system cycles on and off frequently or won't reach the set temperature, the thermostat is one of the first things we check.
Most smart thermostats require a C-wire (common wire) for continuous power. Many older Denver homes don't have one. We can run a new C-wire during installation — it's a straightforward addition that takes about 30 minutes.