July 16, 2025
The Complete Seasonal HVAC Checklist for Texas Weather
Your complete seasonal HVAC checklist for Texas weather, from spring tune-ups to winter safety—stay efficient and comfortable all year.
Your thermostat is the command center of your HVAC system. When it malfunctions, your comfort—and energy efficiency—can take a hit. Many homeowners assume the HVAC system is the problem, but often, the thermostat is the hidden culprit.
In this guide, we’ll walk through the most common thermostat issues, how to troubleshoot them, and when to call in the pros at Air Techs Heating & Cooling.
What’s Going On?
Dead batteries
Tripped breaker
Internal component failure
How to Fix It
Replace the batteries (do this yearly).
Check and reset your breaker.
If there’s still no power, call Air Techs to test the wiring and components.
Sometimes, a safety switch on your HVAC system may also trip—especially if there’s a drainage issue or overheating. That’s when it’s best to bring in a technician.
What Causes It?
Dirty or failing sensors
Poor placement (sunlight, vents, etc.)
What to Do
Clean inside the thermostat gently.
Move the thermostat to a better location (a central, draft-free area).
Consider upgrading to a smart thermostat that self-adjusts more accurately.
Explore indoor air quality solutions for more consistent temperature control throughout your home.
Symptoms:
System runs constantly
No response when changing temperature
Fixes:
Switch fan from "On" to "Auto"
Check thermostat mode settings ("Cool" vs. "Heat")
Test for loose wires or internal faults
If your system continues to cycle or never shuts off, it's likely time to schedule professional service.
Why It Happens:
Locked controls
Internal damage
Loose or corroded wires
Troubleshooting Steps:
Look for a child lock setting.
Reset the unit using the reset button or breaker.
Inspect wiring if you’re comfortable—or let Air Techs handle it safely.
If your programmable thermostat can’t remember your preferred schedule, that’s a sign it’s outdated or failing.
Fix It:
Upgrade to a new model for better performance and energy savings.
Ask Air Techs about smart thermostat options that integrate with your smartphone.
Short bursts of operation (on-off-on-off) can damage your system over time.
What Causes It?
Incorrect system sizing
Dirty air filters
Faulty thermostat
Next Steps:
Change your filter regularly.
Schedule an HVAC inspection to prevent long-term damage.
A poorly placed thermostat will misread your home’s temperature.
Poor Locations Include:
Near windows or doors
Directly above vents
Exterior walls
**What to Do:
**Let Air Techs help relocate it for more accurate readings during your next maintenance visit.
The best fix is avoiding issues before they start. Here’s how:
Replace batteries annually even if they’re not dead yet.
Dust your thermostat when you clean your home—especially if you have pets.
Schedule routine HVAC maintenance to spot issues early.
Upgrade every 8–10 years to stay ahead of technology changes and avoid unexpected failures.
Routine service through a maintenance agreement can extend the life of your entire HVAC system—including the thermostat.
If you've tried the basics and your thermostat is still acting up, don’t wait. Let the experts at Air Techs Heating & Cooling inspect, repair, or replace it before the issue impacts your comfort or energy bills.
Whether it’s a dead screen, short cycling, or unpredictable temperatures, thermostat problems are frustrating—but usually fixable. If you’re not sure what the issue is or want to upgrade to a smart, energy-efficient model, contact Air Techs today.
Stay in control of your comfort—schedule your thermostat service now.
