Exclusive to Nuheat, this energy efficient 7-day Programmable In-Floor Heat Sensing Thermostat mounts flush to the wall and can be fitted with any decora-style faceplate.

  • Harmony-w-stealfaceplate---2015Exclusive to Nuheat’s floor heating system
  • Flush mounted and can be fitted with any decora-style faceplate
  • Programmable in floor heat sensing thermostat for the Nuheat electric floor heating system
  • Specially designed for use under tile, stone, granite, marble surfaces or engineered and laminate wood applications
  • Programmable 7-day settings for efficient use of Nuheat’s electric floor heating system
  • Energy efficient
  • Dual voltage compatibility (120V or 240V)
  • Backlit display
  • On/Off Switch
  • Built-in G.F.C.I. (Class A)
  • Estimated price $175
  • Model number: HMY DV
  • Warranty – 3-year manufacturer’s warranty*


Did you know?

  • You can get step-by-step programming instructions over the phone by calling our Harmony Programming Phone Line at 1-800-778-9276.
  • The Harmony thermostat may be switched to regulator mode in case your contractor forgets to install the sensor probe.
  • You can get answers to Frequently Asked Questions regarding our thermostats

Thermostat Manual — Harmony HMY110/HMY220

Thermostat Manual — Harmony Dual Voltage (DV)

Always refer to the wiring diagram located on the back of the thermostat

Harmony DV Wiring Diagram

Download Wiring Instructions


HMY110/HMY220 Wiring Diagram

Download Wiring Instructions


If necessary, a relay switch allows you to control multiple circuits with a single control. The relay switch can be conveniently placed inside an electrical junction box.

Relay Wiring Diagram — 120V

Relay Wiring Diagram — 240V

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