During HVAC inspections, technicians assess system performance, check for leaks, clean components, and ensure compliance with safety and efficiency standards.
HVAC inspections are critical for maintaining system performance, safety, and efficiency. A professional technician evaluates all heating and cooling components to identify potential issues before they become costly repairs. Here’s exactly what happens during this process.
Why HVAC Inspections Matter
Annual inspections can prevent 85% of emergency HVAC breakdowns according to U.S. Department of Energy data. They also maintain manufacturer warranties – most require documented annual maintenance. Without inspections, small issues like a cracked heat exchanger or refrigerant leak can turn into $4,000+ replacements.
Key Benefits:
- Extends equipment lifespan by 5-10 years
- Improves energy efficiency by 15-30%
- Identifies carbon monoxide risks
- Maintains warranty coverage
Complete HVAC Inspection Checklist
1. Heating System Evaluation
Furnace/Boiler Inspection:
- Heat exchanger cracks (critical safety check)
- Burner combustion analysis
- Gas pressure and valve operation
- Pilot light/ignition system
- Flue pipe condition
For gas systems, technicians use combustion analyzers to measure CO levels. Even small cracks in heat exchangers can leak dangerous gases into your home.
2. Cooling System Assessment
AC Unit Checks:
- Refrigerant levels and leaks
- Condenser coil condition
- Compressor operation
- Condensate drain function
- Electrical connections
Low refrigerant reduces efficiency by 5% for every 10% undercharge. Technicians measure superheat/subcooling to verify proper charge.
3. Electrical Components
| Component | Test Method | Acceptable Range |
|---|---|---|
| Capacitors | Microfarad measurement | ±10% of rating |
| Contactors | Visual/voltage check | No pitting, full engagement |
| Thermostat | Calibration test | ±2°F accuracy |
4. Airflow & Ductwork
Technicians measure static pressure to identify airflow restrictions. High pressure indicates dirty filters, closed dampers, or undersized ducts. They’ll also check for:
- Duct leaks (average homes lose 20-30% airflow)
- Proper register airflow (150-200 CFM per ton)
- Blower motor amp draw
When to Schedule Inspections
The ideal schedule is:
- Spring: AC inspection before cooling season
- Fall: Furnace inspection before heating season
For built-in gas heaters or water heater thermostat systems, consider more frequent checks if over 10 years old.
What Inspection Reports Include
Professional reports detail:
- Equipment age and remaining lifespan
- Efficiency measurements
- Safety hazards found
- Recommended repairs
- Replacement options if needed
According to ACCA standards, thorough inspections take 60-90 minutes for average systems. Complex setups may require 2+ hours.
