Skip to content
Join our Newsletter

Sensors help manage your home's energy use

Our homes are getting smarter. Smart technology that automates our homes' devices is becoming mainstream, making it convenient for us to rein in our energy use and cut our energy bills. Come to think of it, maybe we're the smart ones.

Our homes are getting smarter.

Smart technology that automates our homes' devices is becoming mainstream, making it convenient for us to rein in our energy use and cut our energy bills.

Come to think of it, maybe we're the smart ones.

Smart technology isn't new, but until fairly recently it's been complicated to install and priced out of most people's reach. Now many systems boast plug-and-play simplicity, and affordable options are as close as your local big-box store.

Probably the biggest factor in that change is the rise of wireless technology, said Ian Hendler, director of business development for Leviton Manufacturing, which makes home automation devices.

Actually, "wireless" isn't an entirely accurate term, Hendler noted. Some technology is truly wireless, using radio frequency to send signals. Other technology is more accurately called "no new wire" or power line networking, meaning the signals travel over the home's existing wires. Sometimes the two technologies can be mixed, opening up even more options.

Smart systems allow automatic or remote control of an array of devices that affect our heating, cooling and electrical costs, such as thermostats, lights, window shades, appliances and electronics, said Laura Hubbard, a spokewoman for the Consumer Electronics Association.

Typically, you can use a smart phone, tablet or computer to see what's running and how much electricity is being used, she said. You can then use that information to make decisions, such as turning off your cable box when you're away or overriding your thermostat's programming when you're working late.

Remote access is beneficial because it allows you to override settings you've chosen in advance, Hendler said. Scheduling is great, but "life doesn't always happen on a schedule," he said.

Some of the functions of smart systems won't save on your energy bills, but they do have a wow factor.

Imagine entering a code to unlock your front door and having that code automatically turn on certain lights, launch your favorite music and maybe warm up your hot tub. Hendler said Honeywell is even working on a system that will sense your approach using the GPS software on your cellphone, so you won't even have to press a button to make all that happen.

Hubbard said manufacturers are jumping on board, embedding smart technology in everything from air-conditioning compressors to clothes washers. "You're going to see this taking off," she said.

Evidence of the growing reach of smart technology is the recent introduction of a smart home-automation system at Lowe's U.S. stores. Called Iris, the system is designed to be affordable for the average consumer, easy to install and capable of accommodating whole-house automation, said Kevin Meagher, general manager and vice-president for Lowe's smart home.

Check with your local store for availability in Canada.

One kit focuses on home security and monitoring, allowing you to get notifications if a security sensor is triggered. One contains a smart thermostat and also lets you control one other electrical device in your house and monitor its power use. The third kit combines the features of the other two.

Each kit has a hub, which connects to a broadband router and communicates with the various devices in your home. All the kits are expandable.

The kits come with free basic service that provides a limited array of alerts and gives you remote control of some functions. But you'll have to buy the premium service if you want a more sophisticated system - for example, one that notifies you when your kids get home from school or automatically turns off items in your house when you use more than a predetermined amount of power.

Another smart device that's gotten a lot of attention is the Nest thermostat, which was designed to automate and greatly simplify the process of programming a thermostat.

The need for the Nest was rooted in the simple fact that most programmable thermostats don't get programmed, said Kate Brinks, director of corporate communication for Nest Labs Inc. Homeowners might program a thermostat once when it's new, but they often neglect to tweak the program as their household schedules change, she said.

The Nest, on the other hand, learns your schedule from the adjustments you make to it, either by turning a dial on the unit or operating it remotely.

It also senses your presence, so it can adjust the temperature if you're home when you're normally gone. The occupancy sensor is a far-field activity sensor that detects heat and body fluids, so it can differentiate between humans and animals, Brinks said.

Leviton's Hendler said that of all the home automation options, a smart thermostat probably provides the best payback for your investment.

He recommended choosing a communicating thermostat that's capable of supporting Wi-Fi so it can be connected to a home network.