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- Wed Nov 28, 2018 2:20 pm
- Forum: Help and Advice
- Topic: Ecobee 4
- Replies: 1
- Views: 6276
Ecobee 4
I replaced my Honeywell XT500C thermostat with Ecobee 4. This is connected to a EWC UZC 3c control board. The old stat hardly used Aux heat even in single digit outside temps using a Trane 19 XL. The old stat also used the variable speed fan, so on cold days it would run fan on high and keep the ...