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Editorial reference / 2026.08
Research notes & field guides
Plain-language notes on home energy audit: costs, procedures, contract terms, and the questions to ask before hiring.
NOTE 01How to Find a Home Energy Auditor Near MeFinding a qualified home energy auditor means checking real certifications, not just search results. Here's how to search, compare, and verify credentials.5 MINNOTE 02How Much Does a Home Energy Audit Cost?What a professional home energy audit costs, what drives the price up or down, what a DIY walkthrough can and cannot tell you, and how to vet an auditor.5 MINNOTE 03How Much Does a HERS Rating Cost?Typical HERS rating costs for new and existing homes, what the RESNET-based process includes, what drives pricing, and how to verify a certified rater.5 MINNOTE 04Energy Audit Tax Credit: What It Covers and How to QualifyA federal tax credit can offset part of a home energy audit's cost. Here's how the 25C credit works, what it requires, and where to confirm current rules.5 MINNOTE 05BPI Versus HERS Certification: What's the Difference?BPI and HERS/RESNET are the two major U.S. home energy credentials. Here's how their scope, testing focus, and typical use cases differ.5 MINNOTE 06Blower Door Test Explained: What It Measures and Why It MattersA blower door test measures how much air leaks in and out of your home. Here's how the test works, what the results mean, and what it typically costs.5 MIN