Start with the bulbs you actually use
Make a short inventory of the lamps used most often. Record the bulb base, available space, fixture type and whether a dimmer is involved. Compare a suitable LED replacement with the current bulb rather than buying a large package before checking fit.
Replacing an incandescent bulb differs from replacing an already efficient LED. The potential benefit depends on the starting equipment and hours of operation. Do not apply a national average saving to a particular household without a calculation.
Brightness is not the same as electricity use
Lumens describe light output; watts describe power use. Compare the brightness needed for the task, then compare energy use among suitable options. Color temperature, expressed in kelvin, describes the appearance of the light. Try one bulb in the room before committing to a different color appearance throughout the home.
The DOE lighting guide explains LED technology, dimming and color selection. Use its technical explanations while checking older purchasing recommendations against current program notices.
Confirm fixture and control compatibility
Read the manufacturer's instructions for dimmers, enclosed fixtures and locations exposed to moisture or weather. Check the actual model rather than assuming every LED works with every control. If a fixture or switch needs electrical work, use an appropriately qualified professional.
Keep packaging until the bulb has been tested in its intended location. A poor fit, unwanted glare or incompatible dimming can make an efficient product unsuitable for the task.
Important correction to older bulb advice
EPA ended the general ENERGY STAR Lamps and Luminaires specifications on December 31, 2024. Do not tell readers that every new general-purpose bulb must carry a currently active ENERGY STAR certification. Some categories have separate treatment; verify the exact category and current rules.
LADWP's marketplace still lists lighting eligibility routes, including California product requirements. Confirm the current model and rebate terms with the marketplace before purchase. An older logo or a retailer's description is not sufficient proof.
Renters and realistic savings
Renters can ask which removable bulb changes are permitted and who owns the existing equipment. Keep original bulbs if the property manager requires them to be restored.
Compare cost, usable brightness and compatibility. Turn off lighting when it is unnecessary, without compromising safe movement. Save receipts for any eligible claim. This guide does not promise free bulbs, a fixed rebate on every product or a particular reduction in the total LADWP statement.