75 Degree AC- Houston

Yes. In Texas, HVAC contractors must be registered with the Texas Department of Licensing and Regulation (TDLR) to perform HVAC work for compensation, and anyone handling refrigerant must hold EPA Section 608 certification. When hiring, ask for the contractor’s TDLR license/registration number and a copy of their EPA 608 card, confirm both on the appropriate government websites, and verify they carry general liability insurance (and workers’ comp if applicable). Also ask for local references and proof of experience with Houston homes and climate conditions.

A proper on‑site load calculation is required — not just tonnage per square foot. Reputable contractors use Manual J (heat/cooling load), Manual D (duct design) and Manual S (equipment selection) to size equipment for your home. In Houston’s hot, humid climate, correct sizing and ductwork, good airflow, and humidity control are critical — oversized units will short‑cycle and reduce dehumidification. Discuss variable‑speed compressors or two‑stage units and higher SEER models for better comfort and efficiency, and make sure the contractor inspects/air‑seals the duct system as part of the recommendation.

Most municipalities, including the City of Houston, require permits and inspections for HVAC replacements and major alterations; your contractor should obtain the permits and provide copies. A clear written estimate/contract should list scope of work, equipment make/model and efficiency rating, refrigerant type, labor and permit fees, project timeline, payment schedule, warranty information (manufacturer and workmanship), maintenance recommendations, and how change orders will be handled. Keep copies of permits, receipts and warranty registrations for your records.