Control & Automation

Honeywell Announces Cloud-Based Open API for Wi-Fi Thermostats

Tapping the Internet of Things, Honeywell’s Comfort Control API for WiFi thermostats will hasten integration with pro & DIY home automation systems such as Control4, Lutron, Smartthings, ifttt, others.

Honeywell's Open API is being tested by Lutron, Control4 and others, opening the door for third-party home automation providers to integrate with Honeywell's Wi-Fi thermostats via the cloud.
Julie Jacobson · September 11, 2013

Soon, we should see Honeywell’s smart thermostats integrate with numerous home automation systems by tapping the Internet of Things. The company has announced a cloud-based open API, called Comfort Connect, for its Wi-Fi thermostats.

While the API so far has been implemented only by professional-oriented providers— Control4 (home automation), Lutron (lighting controls, motorized shades), Akuacom (Honeywell’s own smart grid solution) and Opower (smart grid platform) – Honeywell expects DIY solutions to follow.

Honeywell’s Brad Paine, director of product development, Environmental Combustion and Controls, tells CE Pro, “We have demand from both custom systems as well as DIY. … Honeywell offers both professionally installed products as well as DIY products and the web API allows integration of either.”

Currently, Honeywell offers three Wi-Fi thermostats (known by different names depending on channel): the WiFi Smart Thermostat ($250 MSRP), WiFi VisionPro ($149) and WiFi FocusPro ($119).

The open API opens doors to a growing number of existing and forthcoming IoT service providers including ifttt, SmartThings, iRule,, Blacksumac Piper, WigWag , Ube and countless others.

So far, only a handful of other IP-enabled thermostat makers have opened their APIs to third parties. Ecobee and NetworkThermostat are two of them.

Most glaringly, Nest has not opened its API although I speculated earlier that the company might announce such largesse at the CEDIA Expo later this month. I have since tempered my expectations but we can always hope.

RELATED: Prediction: Nest Will Announce Open API at CEDIA 2013

Honeywell Integration

A leading provider of communicating thermostats, Honeywell has for a long time integrated its products with its own home-control systems including the Total Connect cloud-based security and automation service.

Over the past couple of years, however, we have seen more of an effort to deploy Honeywell Thermostats beyond the Honeywell ecosystem. For example, the company has rejiggered its VisionPro thermostat to incorporate a radio that communicates natively with Lutron’s RadioRa 2 lighting and shade controls. That product, announced a few months ago, is called the Lutron TouchPro.

But the Comfort Control API is a new initiative. Communications with WiFi thermostats happen at the cloud level, allowing third-party providers to tap into a wealth of energy-management information crunched and processed by Honeywell – without the need to tunnel into a user’s home network.

For more information on Honeywell’s open API visit

Currently the notice says: “Please leave your name and email below, and we’ll send you an invitation to join Honeywell’s Comfort Control API Program in the near future. We are aggressively moving through the invitation requests and anticipate that it will be a short wait before you receive your invitation.”

At CEDIA Expo 2013:
Honeywell, booth #1510
Control4, booth #608
Lutron, booth #1127
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  About the Author

Julie Jacobson is founding editor of CE Pro, the leading media brand for the home-technology channel. She has covered the smart-home industry since 1994, long before there was much of an Internet, let alone an Internet of things. Currently she studies, speaks, writes and rabble-rouses in the areas of home automation, security, networked A/V, wellness-related technology, biophilic design, and the business of home technology. Julie majored in Economics at the University of Michigan, spent a year abroad at Cambridge University, and earned an MBA from the University of Texas at Austin. She is a recipient of the annual CTA TechHome Leadership Award, and a CEDIA Fellows honoree. A washed-up Ultimate Frisbee player, Julie currently resides in San Antonio, Texas and sometimes St. Paul, Minn. Follow on Twitter: @juliejacobson Email Julie at

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  Article Topics

Control & Automation · Lighting · News · Control4 · Honeywell · IoT · Lutron · Open API · All Topics
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