DECISION GUIDE 01

Keep an old refrigerator or replace it?

Replacing a working refrigerator makes financial sense on energy savings alone only if those savings repay the replacement cost while you still expect to own it. Age alone does not answer that question.

01 / COLLECT THE INPUTS

Start with model-specific energy use

For a new refrigerator, use annual kilowatt-hours from its yellow EnergyGuide label. The Federal Trade Commission requires the label to disclose tested annual energy information and a comparison range for similar models. Compare refrigerators of similar capacity and configuration; federal standards and ENERGY STAR criteria vary by product class and features.

For the existing refrigerator, use its original EnergyGuide value when available or a sufficiently long measurement that captures normal compressor cycling. A short observation, nameplate wattage, or age-based guess can misstate annual use.

02 / DEFINE THE DECISION

Use the right cost for the decision you face

Working refrigerator

If replacement is optional, test the full net purchase, delivery, installation, and disposal cost, less confirmed rebates.

Replacement already required

If failure makes a purchase unavoidable, compare the extra price of the efficient candidate with the alternative you would otherwise buy.

How long you will own it

If payback comes after you expect to replace or move the refrigerator, the energy savings do not recover the cost in time.

Repair risk, food loss, financing, resale value, disposal, warranty coverage, and other differences may matter, but the calculator does not estimate them. Consider them separately when you have reliable numbers for your situation.

03 / WORKED EXAMPLE

The same appliance can cross the line in one state and miss it in another

This example is illustrative, not a claim about a typical refrigerator. Suppose a measured old unit uses 900 kWh per year, a comparable new model’s EnergyGuide label shows 400 kWh per year, and optional replacement costs $1,200 net. The annual energy difference is 500 kWh.

At the EIA 2026-05 national residential average of 18.44¢/kWh, estimated savings are $92.20 per year and simple payback is 13.0 years. At California’s 33.25¢ average, payback is 7.2 years; at Idaho’s 12.35¢ average, it is 19.4 years.

Run your refrigerator numbers →

04 / TEST UNCERTAINTY

Check whether the answer changes

Run at least three scenarios: a low-saving case with lower old-unit consumption, a base case from the best available measurement, and a high-saving case. Repeat with the bill rate and plausible ownership periods. The result is more dependable when payback stays within your ownership period in all three cases.

Do not force a conclusion when the refrigerators differ in storage capacity, freezer layout, ice-making, temperature performance, or another feature you need. You can compare electricity cost, but kWh alone cannot tell you which refrigerator fits your needs.

05 / PRIMARY SOURCES

Check the underlying records

Method reviewed July 29, 2026. This guide helps you plan; it is not engineering, repair, product-selection, or financial advice.