Rheem announced at the International Builders Show its EcoNet-enabled water heaters work with the Nest Learning Thermostat.

Heating, cooling and water heating systems dominate residential utility bills and combined account for more than 65 percent of a home’s energy use. A home’s water heating system alone is about 20 percent of that total, so regulating it can amount to significant savings each year.

When the Nest thermostat is set to Away mode, EcoNet-enabled water heaters will go into an energy-efficient operating mode to reduce the amount of energy the water heater uses and help save money on utility bills.

Rheem’s line of EcoNet-enabled Electric and Hybrid Heat Pump Water Heaters now work with Nest. In addition, the company has plans to add its EcoNet-enabled gas water heaters to the program in 2016.

Rheem introduced EcoNet in 2015. It is a smart system that homeowners to manage high-efficiency, EcoNet-enabled Rheem and Ruud products from anywhere through a free mobile app or a wall-mounted Control Center. EcoNet also notifies homeowners when their equipment needs service through maintenance alerts available through the EcoNet app.