Texas Summer HVAC Prep Checklist

Every summer it's the same story: the first brutal heat wave hits, thousands of ACs get pushed hard for the first time in months, and the ones with small, ignored problems fail all at once — right when every HVAC company is slammed. The fix is simple and cheap: get ready in spring. Here's exactly what to do, split into what you can handle yourself and what's worth a pro.

Why prep beats reacting

An air conditioner that's been idle all winter can have a weak capacitor, a low charge from a slow leak, or a dirty coil — none of which you'll notice until you ask it to work hard. Catching those on a mild April day means a planned, lower-stress repair. Discovering them on a 104° afternoon means a hot house, a long wait, and sometimes a bigger repair because the system limped along too long.

Your DIY spring checklist (free)

1. Replace the air filter
   Start the season fresh; a clean filter is the foundation of cooling — see air filters & MERV.
2. Clear the outdoor unit
   Pull weeds, leaves, and clippings; give it two feet of breathing room and gently rinse pollen and dust off the fins.
3. Open and unblock vents
   Make sure furniture and rugs aren't smothering your supplies and returns.
4. Test early
   Run the AC on a mild day to confirm it cools before you depend on it.
5. Set your schedule
   Dial in efficient thermostat settings for the season.

The professional tune-up list

The things that prevent the breakdown you can't see coming need a technician — this is the full tune-up checklist:

• Check refrigerant charge and operating pressures (and look for leaks).
• Test the capacitor, contactor, and electrical connections — the parts most likely to fail in the heat.
• Clean the condenser coil so the system can release heat.
• Clear and confirm the condensate drain and safety float.
• Measure airflow and the temperature split; inspect the blower.

Watch for these early-season warning signs

• Weak or warm airflow on the first hot day — see why your AC isn't cooling.
• Longer run times or rising bills compared to last year — see why your summer bill is high.
• New noises, short cycling, or a musty smell at startup.

How MLD helps you beat the heat

We run pre-season tune-ups across Leander, Cedar Park, Georgetown, Liberty Hill, and Round Rock so your system is ready before the first heat wave — not scrambling during it. Our NATE- and EPA-certified, York Factory-Authorized technicians (license TACLA37761C) run the full checklist, show you what they find, and quote any genuinely needed repair at a flat rate. Book early and skip the summer rush.

What to do next

• Want it handled automatically every year? See is a maintenance plan worth it? and our maintenance plans.
• Curious what a tune-up covers? Read What an AC Tune-Up Includes.
• Ready to book? Request service before the rush.

Call 512-528-4258 to schedule your spring checkup.