The tricky part is changing from old wiring R, i+, i-, C to new 8 wire +2 wire for outdoor temp sensor system with this thermostat.
The original installer had cut 4 of the 8 wires, run from inside unti to Home Thermostat. I had to reconnect those. My inside unit has two wiring bars. I had to dewire from R, i+, i-, C bar and then connect all 8 wires to the longer bar with W1, W2, G, Y2, Y1, C, R, O matching thermostat. The outside temp sensor has 2 wires run to inside unit, that was sharing 2 wires over to thermostat, so I lost those wires. The M30 Wifi connects to internet and can show outside temp from internet until I can run 2 new wires down to thermostat. Wifi also sets day & time. The air circulation fan works and you can adjust how much it runs per hour upt to 30 mins. I like the screen save mode, as it turns completely dark. That can be left on if you like the light at night. And there is a brighness setting which is nice. Picture shows original 4wires with old thermostat to new 8 wires conencted to new location on inside unit. The M30 letters match so its just a matter of keeping the wires color-to-numbers the same.
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This Item  Lennox 15Z69 iComfort M30 Universal Smart Programmable Thermostat, 4.3" LCD Color Display, Geo-Fencing, Remote Access, Wi-Fi and Alexa Enabled |  |  |  |  |  | |
| Price | $289.99 | $189.99 | $179.99 | -10% $90.00 List: $99.99 | $249.99 | -27% $153.11 List: $209.99 |
| Delivery | Get it as soon as Wednesday, May 15 | Get it as soon as Tuesday, May 14 | Get it as soon as Wednesday, May 15 | Get it as soon as Thursday, May 16 | Get it as soon as Tuesday, May 14 | Get it as soon as Tuesday, May 14 |
| Customer Ratings | ||||||
| Alexa integration | ||||||
| Easy to install | ||||||
| Tech Support | ||||||
| Smart Features | ||||||
| Temperature Control | ||||||
| Sold By | OutCrate | Amazon.com | DealsDailyUS | NexTechDepot | Amazon.com | Amazon.com |
| control method | application, voice | application | application | application, touch | application | voice |
| connectivity protocol | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi |
| power source | Ac/dc | — | — | Corded Electric | — | Common wire |
| controller type | Amazon Echo, Amazon Alexa | Amazon Alexa, Android, Apple HomeKit, Google Assistant, iOS | — | Amazon Alexa, Apple HomeKit, Google Assistant, iOS, Android | Amazon Alexa, Android, Apple HomeKit, Google Assistant, iOS | Amazon Alexa, Google Assistant, SmartThings, Hand Control |
| specification met | — | Energy Star | — | Energy Star | Energy Star | Energy Star |
| material | — | Metal | — | Plastic | Metal | — |
Reviews with images
Works fine for my 10year old Lennox iComfornt system
The tricky part is changing from old wiring R, i+, i-, C to new 8 wire +2 wire for outdoor temp sensor system with this thermostat. The original installer had cut 4 of the 8 wires, run from inside unti to Home Thermostat. I had to reconnect those. My inside unit has two wiring bars. I had to dewire from R, i+, i-, C bar and then connect all 8 wires to the longer bar with W1, W2, G, Y2, Y1, C, R, O matching thermostat. The outside temp sensor has 2 wires run to inside unit, that was sharing 2 wires over to thermostat, so I lost those wires. The M30 Wifi connects to internet and can show outside temp from internet until I can run 2 new wires down to thermostat. Wifi also sets day & time. The air circulation fan works and you can adjust how much it runs per hour upt to 30 mins. I like the screen save mode, as it turns completely dark. That can be left on if you like the light at night. And there is a brighness setting which is nice. Picture shows original 4wires with old thermostat to new 8 wires conencted to new location on inside unit. The M30 letters match so its just a matter of keeping the wires color-to-numbers the same.
Top reviews from the United States
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Reviewed in the United States on May 14, 2023
The original installer had cut 4 of the 8 wires, run from inside unti to Home Thermostat. I had to reconnect those. My inside unit has two wiring bars. I had to dewire from R, i+, i-, C bar and then connect all 8 wires to the longer bar with W1, W2, G, Y2, Y1, C, R, O matching thermostat. The outside temp sensor has 2 wires run to inside unit, that was sharing 2 wires over to thermostat, so I lost those wires. The M30 Wifi connects to internet and can show outside temp from internet until I can run 2 new wires down to thermostat. Wifi also sets day & time. The air circulation fan works and you can adjust how much it runs per hour upt to 30 mins. I like the screen save mode, as it turns completely dark. That can be left on if you like the light at night. And there is a brighness setting which is nice. Picture shows original 4wires with old thermostat to new 8 wires conencted to new location on inside unit. The M30 letters match so its just a matter of keeping the wires color-to-numbers the same.
Works fine for my 10year old Lennox iComfornt system
Reviewed in the United States on May 14, 2023
The tricky part is changing from old wiring R, i+, i-, C to new 8 wire +2 wire for outdoor temp sensor system with this thermostat.Reviewed in the United States on May 14, 2023
The original installer had cut 4 of the 8 wires, run from inside unti to Home Thermostat. I had to reconnect those. My inside unit has two wiring bars. I had to dewire from R, i+, i-, C bar and then connect all 8 wires to the longer bar with W1, W2, G, Y2, Y1, C, R, O matching thermostat. The outside temp sensor has 2 wires run to inside unit, that was sharing 2 wires over to thermostat, so I lost those wires. The M30 Wifi connects to internet and can show outside temp from internet until I can run 2 new wires down to thermostat. Wifi also sets day & time. The air circulation fan works and you can adjust how much it runs per hour upt to 30 mins. I like the screen save mode, as it turns completely dark. That can be left on if you like the light at night. And there is a brighness setting which is nice. Picture shows original 4wires with old thermostat to new 8 wires conencted to new location on inside unit. The M30 letters match so its just a matter of keeping the wires color-to-numbers the same.
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Reviewed in the United States on November 3, 2022
Reviewed in the United States on July 27, 2023
Reviewed in the United States on August 6, 2022
