Spring cooling
Outdoor coil condition, drain performance, cooling operation, airflow, and control checks.
Preventive maintenance
Maintenance helps catch small issues, protect efficiency, and keep equipment history visible.
Do not open electrical panels, handle refrigerant, bypass safety switches, or perform risky repairs.
Comfort Plan
The Cornerstone Comfort Plan includes two seasonal tune-ups, reminders, priority scheduling, and service records.
Outdoor coil condition, drain performance, cooling operation, airflow, and control checks.
Heating sequence, safety observations, airflow, thermostat operation, and performance notes.
Filters, vents, thermostat batteries, and outdoor clearance are practical owner tasks.
Two annual visits, priority scheduling, reduced diagnostic fee, and repair discount.
Explore the Comfort PlanFrequently asked
Yes. Cornerstone provides 24/7 emergency heating and cooling service across our North Texas service area, including evenings, weekends, and holidays.
Arrival timing depends on location, weather, current workload, and urgency. We do not make exact promises over the phone, but same-day appointments are common — call for current availability.
Our technicians service common residential and light-commercial equipment across major brands. We are an independent service company and are not affiliated with any single manufacturer.
Age, repair history, comfort issues, efficiency, warranty status, and installation quality all matter. We walk through the trade-offs with you before you decide, and we never push a replacement you do not need.
Most homes benefit from a cooling tune-up in spring and a heating tune-up in fall. The Comfort Plan bundles both so it is easy to stay on schedule.
Ready when you are
Appointments available Monday through Saturday. Emergency service available 24/7.