Maintenance contracts in the Houston area typically run $300–$800 per unit per year for standard quarterly service. Repairs vary: minor $300–$700, intermediate work like blower motors or coil cleaning $700–$1,500, and major work like compressor replacement $2,500–$6,000+. We provide itemized quotes before any work begins.

The most common causes are deferred maintenance (dirty coils, neglected refrigerant), electrical component wear (capacitors, contactors), condensate drain blockages in high-humidity conditions, and rooftop unit degradation from continuous UV and heat. Extended run times during Texas summers accelerate all of them.

A rooftop unit (RTU) is a packaged HVAC system installed on a commercial roof, containing both heating and cooling in a single cabinet. In Houston's climate, properly maintained RTUs typically last 12–18 years. Without maintenance, lifespan drops significantly and major failures become common after 8–10 years.

Common causes include low refrigerant from a slow leak, a dirty condenser coil that can't reject heat in Houston temperatures, an economizer stuck open pulling in unconditioned outside air, or an undersized system that can't handle peak load. In multi-zone buildings, a failed VAV box or zone damper can cause isolated hot spots that look like whole-system failure.

It's a contract for scheduled preventive maintenance, often combined with priority emergency response and discounted repair rates. For most Houston businesses — where summer HVAC failure has immediate, measurable business impact — the combination of fewer emergency repairs and priority response more than justifies the cost.

Structured preventive maintenance (prevents expensive emergency repairs), coil cleaning to maintain heat transfer, filter management, thermostat setback programming for unoccupied hours, and — when systems are aging — replacement with higher-efficiency equipment. Poorly maintained coils alone can increase energy consumption 10–15% versus a clean system.