An efficient appliance saves energy only relative to the device and behavior it replaces. The first question is what consumes energy now, how often it runs, and whether replacement is already necessary. Buying a new appliance for every room is rarely a sensible first step.

Inventory the overlooked loads

A second refrigerator holding a few drinks, a freezer in an unsuitable garage, or an old dehumidifier operating continually may deserve attention. Confirm actual use and the manufacturer’s location requirements before making assumptions.

A plug-in energy meter can help evaluate suitable cord-connected appliances when used within its ratings and instructions. Do not use it on hardwired equipment or loads beyond its limits. Keep electrical troubleshooting with qualified people.

Situation: the kitchen refrigerator is efficient, but the garage unit is not

The household focuses on replacing the visible kitchen appliance while a seldom-used older unit runs elsewhere. Removing unnecessary duplicate capacity may save more money than upgrading the already suitable primary refrigerator.

Decide whether the second unit serves a real need. If it does, compare suitable replacements for that environment. If it does not, arrange proper removal and refrigerant handling rather than leaving unused equipment plugged in.

Compare products with a consistent workload

Look at capacity, rated energy use, expected operating conditions, and the household’s requirements. A smaller or less frequently used appliance cannot be compared with a larger heavily used one solely by an efficiency label.

ENERGY STAR’s product resources provide certified-category information. The label helps with selection but does not establish that immediate replacement of a working appliance is financially worthwhile.

Coordinate appliances with remodeling

Kitchen planning should confirm clearances, ventilation, electrical supply, water connections, and service access. An appliance that fits a nominal opening may still conflict with a wall or cabinet door when opened.

When a kitchen is being renovated, selecting efficient suitable equipment can make sense as part of the planned purchase. Account for installation work rather than comparing shelf prices alone.

Understand behavior changes

Laundry routines, unnecessary standby operation, and repeated partial loads can influence use. Choose changes that the household can sustain without compromising hygiene, safety, or practical needs. An elaborate saving routine abandoned after a week is not a durable improvement.

Put the biggest measured or well-established loads first. If appliance use is already reasonable and equipment is sound, a larger enclosure or HVAC problem may deserve the budget. Efficiency is a process of finding the next meaningful opportunity, not a requirement to replace everything that has a newer model.

Sources and further reading for the complete guide

Lower Your Home Energy Costs — 2026 Complete Guide