The short version: The Lennox iComfort S30 Ultra has been discontinued and officially replaced by the iComfort S40 Ultra. If a Canadian dealer quotes you an “S30,” confirm whether they actually mean the current S40 — Lennox’s own support documentation treats it as a direct replacement. Here’s what the S30 offered and what changed.

A note on sourcing: This is a dealer-installed, contractor-channel product. Independent owner reviews are scarce, and what does exist mostly covers the now-superseded S30. Ask your installer for recent customer references, and confirm which model you’re actually being quoted.

Who It’s For

The S30 (and its S40 successor) is Lennox’s premium “communicating” thermostat, built to act as a home-automation hub for Lennox HVAC equipment with compatible communicating components. It’s for forced-air homes running Lennox systems, where it manages staging, humidity, and zoning beyond what a basic thermostat can. On non-Lennox or non-communicating equipment, most of the advanced features aren’t available.

Design & Build and Compatibility

The S30 used a 7-inch HD color touchscreen with a tablet-like interface and required a separate wireless Smart Hub Controller for internet connectivity. Its successor, the S40 Ultra, keeps the 7-inch display but removes the separate hub requirement, per Lennox’s own documentation — a real simplification if you’re comparing the two.

Full functionality depends on Lennox “communicating” system components and typically requires a Lennox-certified technician for installation, including a second communication part at the outdoor unit or air handler per installer accounts. This is not a retail DIY thermostat.

Price & Value

Lennox iComfort S30 Ultra (discontinued)
Price (CAD) $350–$500 (installed pricing varies by dealer; figure reflects last known S30 pricing)
Where sold Lennox dealer network
Subscription required No

Given the discontinuation, expect a current Canadian quote to reference the S40 Ultra rather than genuine new S30 stock. Confirm pricing against the current model. Rebate eligibility for dealer-installed thermostats varies by province — check directly rather than assuming. See Smart Thermostat Rebates in Canada by Province.

Pros & Cons

Pros:
– Deep integration with Lennox communicating equipment (staging, humidity, zoning)
– Large, tablet-style touchscreen
– Professional installation included as part of the typical purchase path

Cons:
– Discontinued — current buyers are almost certainly being sold the S40 Ultra instead
– Full feature set requires Lennox communicating components, not any furnace/AC
– Requires certified-installer setup, no retail DIY path
– Very limited independent review coverage

Frequently Asked Questions

Is the Lennox iComfort S30 Ultra still sold in Canada?
No. Lennox has discontinued it and replaced it with the iComfort S40 Ultra. Confirm with your dealer which model is actually being installed.

What’s different about the S40 that replaced it?
Per Lennox’s documentation, the S40 keeps the 7-inch touchscreen but removes the need for a separate wireless Smart Hub Controller.

Does the iComfort S30/S40 work with non-Lennox HVAC equipment?
Basic thermostat functions work, but the advanced “communicating” features require Lennox-compatible communicating system components.