Air conditioning
Efficient air conditioners
Learn how ratings, sizing, installation, climate, and operating habits affect cooling costs.
Heating, cooling and appliance guides
Reduce energy use from the systems that do the most work.
Heating, cooling, refrigeration, laundry, and lighting can have a much larger effect on household electricity use than small plug-in devices. Start with sizing, maintenance, settings, and measured use before replacing equipment.
Cooling and heating
Comfort equipment is often the largest household load. Compare ratings, correct sizing, installation quality, runtime, and maintenance—not just a product label or a single advertised saving.
Heating
How to compare efficient heaters
Understand which questions matter when choosing heating equipment for your home and climate.
High bills
Could an old AC be raising the bill?
Check runtime, airflow, maintenance, controls, and signs that professional HVAC diagnosis is appropriate.
Appliances and lighting
Appliance efficiency is a combination of product choice and actual use. These guides help separate useful specifications from assumptions about how much a change will save.
Refrigeration
Choosing an efficient fridge freezer
Explore the features, capacity, placement, and use patterns that affect refrigerator energy consumption.
Laundry
What does energy saving mean on a washing machine?
See how wash temperature, cycle selection, load size, and drying choices influence energy use.
Lighting
Are energy-saving bulbs LED?
Understand LED lighting, compatibility, and why a lighting upgrade usually has a smaller impact than heating or cooling.
Start with a specific bill or comfort problem
If a bill has jumped, begin with the Lower Electricity Bills hub to compare kWh, rate changes, and likely loads. For whole-home improvements, see the Home Energy Efficiency hub.