How do I compare product energy information without guessing at my actual use?
Quick answer
Compare products using the same kind of published energy information and the conditions stated for it. For a covered product, an EnergyGuide label can show an estimate and comparisons with similar models; it is not a prediction of your household’s actual consumption. Record each model’s stated figure, units, test basis if provided, and category. If a detail is missing or differs, mark it unknown rather than filling it in.
The question, the details, the next step.
I’m choosing between two appliances and want to compare their energy information fairly. What should I write down first?
Start by copying what each product’s official label or product information actually says—not by translating it into a prediction about your home. If the products have EnergyGuide labels, note the product category and the estimate or efficiency information displayed. EnergyGuide labels apply to certain products, not every product, and provide estimates intended to help compare similar models. Treat those figures as published estimates, not personal-use forecasts. [S1]
Use a separate entry for each model:
- Product name or model: [as listed]
- Product category: [as labeled]
- Published energy figure: [copy exactly]
- Units and period: [copy exactly, or “not stated”]
- Test basis or assumptions: [copy what is stated, or “not stated”]
- Source and date checked: [label, manufacturer page, or other document; date]
Don’t assume two figures are comparable just because both mention energy. First check whether they describe the same kind of measure, product category, and stated test conditions.
One label gives an annual cost and another gives an efficiency figure. Can I compare the numbers directly?
No—don’t compare unlike measures as though they were the same rating. Copy each figure with its label and units, then mark the comparison “not directly comparable” unless the published information provides a common basis. For certain appliances, EnergyGuide disclosures use applicable Department of Energy test procedures; the label’s estimate and comparison are tied to those procedures and the covered product category. [S2]
A useful comparison record could look like this:
Model A: [model] | Category: [category] | Figure: [annual cost, copied as shown] | Basis: [stated procedure or “not stated”] Model B: [model] | Category: [category] | Figure: [efficiency figure, copied as shown] | Basis: [stated procedure or “not stated”] Conclusion: The measures differ; no direct numerical comparison made.
If the product pages or labels don’t explain how a figure is defined, leave that field unknown. You can ask the seller or manufacturer what the figure measures and which published test basis applies. The available label information does not establish what either product will consume in your particular household.
What if both labels show an annual estimate, but my routine is very different from the conditions behind it?
Keep the label comparison and your personal-use question in separate columns. The label can help you compare similar covered models under the applicable published basis, but it does not tell you your actual consumption. [S1][S2] Don’t adjust the published estimate with an invented percentage or assume your routine changes the models in the same way.
For example, you might record:
Published comparison: Model A [estimate and units]; Model B [estimate and units]; both labels identify [same category, if true]. Personal factors to check: [your expected frequency of use]; [settings or operating pattern you expect]; [other relevant conditions stated by the manufacturer]. Unknown: How those differences would change actual consumption.
That layout preserves the official comparison without presenting a guess as a measured result. If you need an estimate for your own circumstances, ask the manufacturer what information supports one and what assumptions it uses.
Can you give me a reusable comparison table and a question to send if something is unclear?
Use this copyable record; enter “not stated” rather than guessing. Compare the figures only when the product category and measure are sufficiently alike to make the published comparison meaningful.
Product A: [name/model] Product B: [name/model] Category shown for A / B: [copy each] Published figure and units for A / B: [copy each exactly] Period shown, if any: [copy each or “not stated”] Test basis or assumptions stated: [copy each or “not stated”] Source documents and date checked: [fill in] Comparable on the stated basis? [yes / no / unclear] What the published information supports: [brief comparison] What it does not establish about my use: [write the uncertainty]
Copyable question: “Could you clarify what this energy figure measures, its units and period, and the test basis or assumptions used? Is it intended to be compared with [other product’s figure], or are those figures based on different measures or product categories?”
This produces a cautious, useful comparison without claiming to know your future energy use.
A practical checklist
Copy each product’s published energy figure exactly, including its units.
Record the product category and any stated period, test basis, or assumptions.
Check whether the figures describe the same kind of measure before comparing them.
Mark missing details as “not stated” or “unclear”; do not infer them.
Keep label-based comparison separate from questions about your own expected use.
A few more useful answers
Does an EnergyGuide estimate predict my household’s energy use?
No. It is a published estimate for comparing covered products, not a prediction of an individual household’s actual use. [S1]
Can I use EnergyGuide information for any product?
No. The FTC describes EnergyGuide labels as applying to certain appliances, lighting, and plumbing products; check whether the product is covered rather than assuming every product has such a label. [S1]
What should I do if a label does not state its test basis?
Record “not stated” and ask the seller or manufacturer what basis and assumptions apply. The missing detail does not justify guessing or treating unlike figures as comparable.
Sources
References used for this guide.
- [S1] FTC Consumer Information: EnergyGuide Labels ftc.gov · Checked
- [S2] FTC EnergyGuide Labeling FAQs for Appliance Manufacturers ftc.gov · Checked