Systematic leak detection process:

1. Use the smoke test: Light an incense stick and slowly move it along window frames, door jambs, electrical outlets, and baseboards. Any flickering or movement indicates an air leak
2. Check the attic hatch: This often-overlooked area can waste significant energy through poor sealing
3. Examine plumbing penetrations: Where pipes enter through walls or floors
4. Test light switches and outlets: Use your thermal detector to spot cold spots indicating poor insulation

Window and door inspection checklist:

• Check for broken seals: Look for condensation between double-pane glass, indicating failed thermal seals
• Test window operation: Windows that don't close properly create gaps for air escape
• Examine weatherstripping: Press firmly around door frames—any compression indicates worn weatherstripping
• Check door thresholds: Look for light gaps underneath doors
• Inspect window framing: Use your thermal detector to identify cold spots around frames

Attic and insulation evaluation:

1. Measure current insulation depth: In most climates, you need 10-14 inches of fiberglass or rock wool insulation
2. Check for compression: Insulation that's compressed loses R-value—fluff it back up if possible
3. Look for gaps: Ensure continuous coverage without voids or spaces
4. Examine attic ventilation: Proper airflow prevents moisture buildup and maintains insulation effectiveness
5. Check knee walls and sloped ceilings: These areas often have inadequate insulation

HVAC system inspection points:

• Replace air filters: Clogged filters reduce airflow and increase energy consumption by 5-15%
• Check ductwork connections: Look for disconnected or leaky ducts, especially in attics and crawl spaces
• Test thermostat calibration: Ensure accurate temperature readings
• Inspect condensate drain lines: Clear any blockages that could affect system performance
• Evaluate programmable settings: Optimize temperature schedules for when you're home and away