Seasonal HVAC Maintenance Checklist: Spring AC and Fall Furnace

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Why Maintenance Actually Pays

The majority of emergency no-cool and no-heat calls we run trace back to something a tune-up would have caught: a weak capacitor reading out of tolerance, a dirty flame sensor, a clogged condensate drain, a filthy condenser coil or a filter nobody changed. Prevention is cheaper than emergency dispatch every single time.

Your Spring DIY List (AC)

Replace the filter. Clear two feet around the outdoor unit and remove leaves from the top grille. Gently rinse the outdoor coil from inside out with a garden hose, power off at the disconnect. Pour a cup of warm water down the condensate drain to verify flow. Open all supply registers. Test cooling before the first heat wave, not during it.

Your Fall DIY List (Heating)

Replace the filter. Vacuum around the furnace and remove anything stored against it. Test every smoke and carbon monoxide alarm and replace batteries. Clear leaves, snow and nests from the intake and exhaust terminations. Run the heat for fifteen minutes in early fall so you find problems while it is still 55 degrees outside, not 5.

What a Professional AC Tune-Up Should Include

Measured superheat and subcooling, supply and return temperature split, static pressure across the coil and filter, capacitor microfarad readings against nameplate, compressor and fan amp draw, contactor condition, coil cleaning, condensate drain clearing and float switch test, refrigerant charge verification, electrical connection torque, and documented readings you get to keep.

What a Professional Furnace Tune-Up Should Include

Combustion analysis with a real analyzer, manifold gas pressure, temperature rise against the rating plate, flame sensor microamp signal, ignitor resistance, inducer and blower amp draw, heat exchanger inspection, safety switch verification, venting inspection, condensate system service and carbon monoxide testing in the living space.

Twice a Year Is the Right Cadence

Cooling in spring, heating in fall. Heat pumps benefit from both visits because the same equipment runs year round. A maintenance plan typically bundles both visits with priority scheduling and a discount on repairs.

Frequently Asked Questions

How often should I service my HVAC?

Twice a year, cooling in spring and heating in fall. Heat pumps genuinely need both.

Does maintenance void or protect my warranty?

Most manufacturer warranties require documented annual maintenance, so keeping records protects your coverage.

What does a tune-up cost?

Typically $89 to $169 per visit, often less on a maintenance plan.

Can maintenance lower my energy bill?

Yes. Correct charge, clean coils and proper airflow commonly recover a meaningful share of lost efficiency, and clean equipment lasts longer too.

Still stuck? Get a technician today

We run 24/7 emergency AC repair and heating repair with flat-rate pricing and same-day or next-day appointments. Call (888) 380-4427 or request service online.