Mission Air Conditioning & Plumbing

Ask the contractor for their Texas registration/license number and verify it online through the Texas Department of Licensing and Regulation (TDLR). Confirm they carry general liability insurance and ask whether they have workers’ compensation or an alternative coverage policy for employees. Also confirm who will pull permits and arrange inspections — in Houston most HVAC replacements/major installations require local permits and inspections through the city permitting office — and insist that the contractor obtain those permits.

A clear written estimate should list the equipment brand, model, capacity (tons), and efficiency rating (SEER), refrigerant type, and any included thermostat. It should show scope of work (Manual J/size verification, ductwork modifications or sealing, electrical upgrades), labor, permit fees, disposal of the old unit, projected start and completion dates, manufacturer warranties and the contractor’s workmanship warranty, payment schedule, and change-order policy. Get multiple bids that specify the same scope so you can compare apples to apples, and ask for references and proof of license/insurance before signing.

Have professional maintenance at least once per year for cooling systems, with many homeowners opting for two visits (pre-cooling season and an off‑season check) to keep cooling performance and humidity control optimal. A service visit should include changing or inspecting filters, cleaning coils, checking refrigerant charge and lines, inspecting/cleaning condensate drain, testing airflow and blower components, checking electrical connections and safety controls, verifying thermostat calibration, and inspecting ductwork for leaks. Keep written service records — proper maintenance helps system efficiency and supports manufacturer warranty claims.