What an Energy Audit Report Actually Tells You, and What It Doesn't

A guide to interpreting energy audit findings when buying or selling a home in Eugene, including what the report can and cannot confirm.

An energy audit report can feel authoritative, with charts, scores, and recommendations. But it is worth understanding what the report is actually measuring, and where its limits are, before you rely on it in a transaction.

Most residential energy audits combine a visual inspection with some instrumented testing, such as a blower door test to measure air leakage. The report will typically identify areas of heat loss, note insulation levels where visible, and list equipment efficiency ratings where available. This gives you a reasonable picture of how the home is currently performing.

What the report usually cannot tell you is the full condition of components hidden inside walls or crawl spaces unless those areas were directly accessed. An auditor working from visible evidence and thermal imaging is making an informed estimate, not a guarantee. Any recommendations for upgrades should be read as suggestions based on observed conditions, not a certified prediction of future costs or savings.

It also matters when the audit was performed relative to the sale. An audit completed years before a listing may not reflect changes made since, such as a window replacement or a new heating system. Always check the date and compare it against any renovation history you have gathered separately.

When you receive an audit report as part of a transaction, it helps to separate its contents into three categories: what was directly measured, what was visually observed, and what is recommended for further review. That structure keeps you from treating an estimate as a certainty, and it gives you a clear list of items to verify before you rely on the numbers in your decision.