The e-Comfort system, with a built-in microprocessor, has the ability to perform self-diagnostic tests and communicate with service technicians over the Internet.

"The combination of Invensys' smart control technology and Lennox's comfort system expertise will create trouble-free climate control for the homeowner," said Dale Barnhart, Invensys Climate Controls president.

Lennox officials said the technology would also decrease their company's costs of doing business by providing troubleshooting, parts ordering and immediate warranty processing at the job site through the Internet.

The companies will begin consumer testing of the system this summer.