Annual HVAC maintenance in Houston is among the highest-value home investments available given the region's near-year-round cooling demand and unique humidity challenges. Condensate drain cleaning — monthly or at minimum semi-annually — is critical in Houston; the system pulls enormous amounts of moisture from the air and drains clog faster than in any other US climate. A February or early March tune-up beats the booking rush and catches issues before peak cooling season. Maintenance visits cover coil cleaning, refrigerant level checks, capacitor condition testing, condensate drain flushing, and filter replacement. Annual contracts run $150–$350. Texas TDLR-licensed HVAC contractors below serve Houston and the metro including Katy, Sugar Land, The Woodlands, Pearland, Cypress, Spring, and Humble.