### Second Week of Month: HVAC and Air Quality Systems

The $8,000 System That Needs $20 of Monthly Care

Your HVAC system is your home's most expensive single component, yet monthly maintenance costs almost nothing and extends its life by 5-10 years.

Air Filter Inspection and Replacement (Time: 10 minutes, Cost: $15-$30)

Monthly Filter Protocol: 1. Locate all system filters (furnace, AC, air handler) 2. Check filter condition: - Light dirt: okay for another month - Moderate soil: replace now - Heavy dirt/blocked light: emergency replacement 3. Note filter size and MERV rating 4. Install new filter with arrow pointing toward blower 5. Mark calendar for next change Filter Selection Guide: - MERV 8-11: Best balance of filtration and airflow - Pleated filters: Better than fiberglass, last longer - Bulk buying: Save 40% on annual filter costs - High MERV (13+): Only if system designed for it

Thermostat and Controls Check (Time: 5 minutes, Cost: $0)

Monthly Thermostat Tasks: - Clean dust from unit with soft brush - Check battery level (if applicable) - Verify temperature accuracy with separate thermometer - Test heating/cooling cycle operation - Review and adjust programmed schedules

Ductwork and Vents Inspection (Time: 20 minutes, Cost: $0)

Monthly Vent Maintenance: 1. Remove and clean register covers - Wash with warm soapy water - Dry completely before reinstalling - Check for damage or loose screws

2. Inspect visible ductwork - Look for disconnected joints - Check for damage to insulation - Listen for unusual airflow sounds - Feel for air leaks around connections

3. Ensure proper airflow - Remove furniture/objects blocking vents - Check that dampers are open - Verify balanced air distribution

Indoor Air Quality Assessment (Time: 15 minutes, Cost: $10-$20)

Monthly Air Quality Checklist: - Monitor humidity levels (30-50% ideal) - Check for musty odors indicating mold - Inspect bathroom and kitchen exhaust fans - Test air purifier operation (if equipped) - Document any respiratory irritation patterns