The short version: Dimplex is a well-established electric baseboard and wall-heater manufacturer, and its current Wi-Fi thermostat control is branded CONNEXT, the replacement for the older CONNEX system Dimplex discontinued in 2022. The retailer reviews we found for the original CONNEX line were rough: setup complaints, sync failures, and products failing within a year. We’d treat CONNEXT as a fresh start rather than assume it inherited CONNEX’s problems, but there isn’t yet a deep well of independent reviews on the newer system to confirm that.

Who It’s For

Dimplex thermostats are built for electric baseboard, convector, and wall-heater setups, not central forced-air furnaces. If you have Dimplex-brand baseboards (or compatible line-voltage heaters) and want app-based scheduling and remote control, this is the manufacturer’s own path to that. If you don’t already have Dimplex hardware, third-party options like Mysa work across more heater brands and have a stronger US-market review trail.

Design & Build

Dimplex’s smart control system doesn’t work like a typical single-unit Wi-Fi thermostat. The CONNEXT (and previously CONNEX) approach uses a central Wi-Fi-connected hub or bridge that talks to individual baseboard-mounted or wall-mounted controllers over a wireless protocol, letting one app manage multiple zones. That’s a meaningfully different setup process than a single thermostat that connects directly to your home Wi-Fi, and it’s worth understanding before you buy if you’re expecting a simple one-box installation.

Setup & Compatibility

Dimplex’s smart baseboard system pairs with the company’s own LPC and PC Linear baseboard series and requires Dimplex-specific hardware rather than working as a universal retrofit thermostat on any brand’s baseboard. Basic Dimplex thermostats (non-connected, built into heaters like the Element series) use standard line-voltage wiring with no C-wire or hub needed; the smart CONNEXT system adds the hub/bridge pairing step on top of that. Confirm compatibility with your specific baseboard model before buying into the smart ecosystem, since Dimplex’s connected control doesn’t retrofit onto arbitrary third-party heaters the way Mysa or a King Electric Hoot thermostat can.

App & Ecosystem

Here’s where the sourcing gets specific. Dimplex discontinued the original CONNEX app and cloud service in June 2022, according to the company’s own discontinuation FAQ, meaning any CONNEX-branded hardware bought before then lost app functionality. Retailer reviews for CONNEX (Home Depot and Walmart) described a difficult initial setup, an unintuitive interface, the requirement of a separate email account per thermostat if you had more than one, and a meaningful share of one- and two-star ratings citing units failing within six months to a year and Wi-Fi sync problems that didn’t resolve after repeated attempts.

CONNEXT is Dimplex’s current-generation replacement. We could not find a comparable body of independent reviews for CONNEXT specifically, so we can’t tell you whether the setup and reliability issues carried over or were fixed. If you’re buying into this ecosystem, check the current CONNEXT app’s store rating and recent reviews before committing, since that data will be more current than anything we can verify here.

Price & Value

Dimplex Smart Thermostat/Controller
Price (USD) $140–$210
Ecosystem CONNEXT hub + Wi-Fi app
Retailers Home Depot, Amazon.com, electrical supply houses

Pricing is comparable to Mysa and mid-tier forced-air smart thermostats, but you’re also committing to Dimplex-specific hardware for multi-zone control rather than a single universal device.

Pros & Cons

Pros:
– Established heater manufacturer with decades in electric baseboard hardware
– Multi-zone control from one app is genuinely useful for homes with several baseboard heaters
– Widely available through Home Depot and electrical supply channels

Cons:
– The predecessor CONNEX system was discontinued in 2022, and its own retailer reviews described setup problems and short product lifespans
– No confirmed independent review base yet for the current CONNEXT system
– Requires Dimplex-specific baseboard/controller hardware rather than working as a universal retrofit
– A one-account-per-thermostat requirement was reported as a real annoyance on the predecessor system, worth confirming is fixed before buying

Electric-heat smart thermostats compared: Dimplex CONNEXT, WarmlyYours, Cadet, King Electric Hoot

The Recommendation

Consider Dimplex CONNEXT if you already have or plan to install Dimplex baseboard heaters and want manufacturer-native multi-zone control. Read the current CONNEXT app’s store reviews before buying, given the rocky history of its CONNEX predecessor.

Consider Mysa instead if you want a single-unit Wi-Fi thermostat with a stronger US review trail and broader heater-brand compatibility. See Best Smart Thermostats for Electric Baseboard Heating.

Frequently Asked Questions

Is Dimplex CONNEX still supported?
No. Dimplex discontinued the CONNEX app and cloud service in June 2022. If you own CONNEX hardware, check Dimplex’s discontinuation FAQ for current status; it has been replaced by CONNEXT.

What’s the difference between CONNEX and CONNEXT?
CONNEX was Dimplex’s original Wi-Fi multi-zone control system, discontinued in 2022. CONNEXT is the current replacement. We don’t have enough independent review data on CONNEXT yet to confirm whether it resolved the setup and reliability complaints reported against CONNEX.

Does Dimplex’s smart thermostat work with other brands’ baseboard heaters?
Not confirmed as a universal retrofit. Dimplex’s connected system is designed around its own LPC and PC Linear baseboard hardware. Confirm compatibility with your specific heater before buying.

Is Dimplex a good alternative to Mysa?
It depends on what heaters you own. If you already have Dimplex baseboards, the manufacturer’s own system offers deeper integration. If you’re starting from scratch or have mixed-brand heaters, Mysa has broader compatibility and a more established independent review base in the US.