Heat and Cool

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Programmable thermostats and apps make it easy to control the temperature of your home and save energy and money.

Space heating, space cooling, and water heating are some of the largest energy expenses in any home. Learn how to save money and energy at home, choose energy efficient heating and cooling systems, and maintain comfort.

Space Heating and Cooling

Principles of Heating and Cooling
Understanding how your home and body heat up can help you stay cool.
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In most situations, a programmable thermostat can save you money without sacrificing comfort.
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Minimizing Energy Losses in Ducts
Insulating, air sealing, and placing ducts within the conditioned space of your home will reduce energy losses.
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How to Read Residential Electric and Natural Gas Meters
Read your own electric and gas meters to ensure accuracy.
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Dehumidifying Heat Pipes
If you live in a hot, humid climate, a dehumidifying heat pipe may improve comfort by reducing indoor humidity.
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Home Cooling Systems
Choosing the most effective cooling options for your climate saves money and improves comfort.
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Home Heating Systems
Your choice of heating technologies impacts your energy bill. Learn about your options, from active solar to portable heaters.
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Heat Pump Systems
Live in a mild climate? A heat pump might be your best option for efficient heating and cooling.
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Water Heating

Selecting a New Water Heater
Tankless? Storage? Solar? Save money on your water heating bill by choosing the right type of energy-efficient water heater for your needs.
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Sizing a New Water Heater
When buying a new water heater, bigger is not always better. Learn how to buy the right size of water heater.
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Tankless or Demand-Type Water Heaters
Looking to save money and energy? A tankless water heater might be the right choice for your small household.
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Heat Pump Water Heaters
If you live in a warm place, a heat pump might be your ticket to lower energy bills.
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Storage Water Heaters
Installing a storage water heater? Learn about selecting, installing, and maintaining a storage water heater.
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Tankless Coil and Indirect Water Heaters
Can you use your home's space heating system to heat your water? Indirect water heater do just that.
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Solar Water Heaters
Solar energy isn't just for electricity. Learn how a solar water heater works.
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Drain-Water Heat Recovery
Did you know that you can use heat from water that you've already used to preheat more hot water -- and reduce your water heating costs?
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Reduce Hot Water Use for Energy Savings
Fixing leaks, using low-flow fixtures, and buying energy-efficient appliances can help you save on water heating bills.
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Swimming Pool Heating
Own a swimming pool? Find strategies to reduce the cost of heating your pool.
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