A smart thermostat is one of the easiest upgrades you can make — and it pays for itself fast. United National HVAC installs and programs all major smart thermostats, including Nest, Ecobee, and Honeywell.
A smart thermostat upgrade in Celina, TX can reduce your cooling costs by 10–15% through intelligent scheduling and real-time adjustments. United National HVAC installs and configures smart thermostats across Collin County for all system types.
Homes in Light Farms and Mustang Lakes and across Celina (75009) run their AC for 8+ months per year. A 10% efficiency gain from a smart thermostat adds up to real savings over a DFW cooling season. We handle the full installation and configuration — including multi-zone setups and heat pump compatibility — so you don't have to worry about wiring complications.
We install and configure Ecobee, Nest, Honeywell Home, and other smart thermostats. For heat pumps, multi-stage systems, or homes with complex zoning, proper wiring is critical — incorrect installation can damage your equipment. We get it right the first time and walk you through the app setup before we leave.
Call us now or request service online. Same-day appointments available across DFW.
Call 214-983-0507