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| sustainability |
| rules of thumb |
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Cambridge Studio
617.547.4477
Newton Studio
617.244.4477
Berkshire Studio
413.528.4452
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| Major Appliances & Lighting |
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Water Heater Efficiency is described by the Energy Factor (EF) rating. Gas water heaters are more expensive than electric,
but may cost as much as 50%-70% less to operate. Wrap storage tanks with R-16 insulation jackets and hot water pipes from heater to end use with R-6 insulation. Set water heater temperature to 120 degrees. Higher temps lead to scalding and more standby losses, lower temps can lead to bacteria forming in water tank.
Showers alone account for 37% of a home's hot water use. Low-flow showerheads are an inexpensive solution.
Appliances consume 21% of a home's energy, with the refrigerator commanding a 9% share of a home's energy use. Elements that reduce efficiency of a refrigerator are side-by-side units, auto ice dispensers, and through the door water dispensers.
Dishwasher: Look for an EF of 0.58; light, medium and heavy wash settings; and Energy saving "no heat dry" or "air-dry" switch. A booster or supplemental water heater is necessary to allow the water heater to be set to 120 degrees.
Ovens: Convection ovens are 33% more effective than standard ovens. Induction elements that use electromagnetic energy to heat the pan are the most effective.
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