Home Energy Audit: How to Find (and Fix) Energy Waste
A home energy audit is a systematic check of where your house loses energy and money. It’s the smartest first step before spending on upgrades — you’ll know exactly what to fix instead of guessing.
DIY Audit (Free, Start Here)
- Check the bill: Compare this year’s kWh to last year’s to spot trends.
- Hunt for drafts: On a windy day, hold a lit incense stick near windows, doors, and outlets. Drifting smoke = a leak.
- Inspect insulation: Look in the attic — if you can see the joists, you need more insulation.
- Map your devices: Note old fridge, second fridge, dehumidifier — silent energy hogs.
Professional Audit (Worth It)
A pro uses a blower-door test and infrared camera to find hidden leaks and weak insulation. Many utilities subsidize or discount audits — check yours first. Costs typically run $200–$600 but often pay back fast.
Biggest Fixes
- Air-seal attic and rim joists
- Add insulation to recommended R-values for your zone
- Seal ductwork leaks
- Upgrade the worst appliance (usually the fridge or HVAC)
Before You Spend
Start with our 12 ways to lower your electric bill for the no-cost wins, then use audit findings to prioritize bigger projects.
FAQ
Is a professional audit worth the cost?
Often yes — it prevents wasted upgrade spending and many utilities offset the fee.
How long does an audit take?
A professional visit is usually 2–4 hours, with a report in a week.
From our home energy & electrification guide.
