I love the new T9 (Honeywell Home now Resideo) smart thermostat. I love the idea of the smart sensors. They keep my home comfortable and I can change which room gets a priority for heating and cooling.
Overall I like it. I have one in my house and bought another one for garage but heat lowest setting is 50 degrees. Prefer to keep garage at 45 or so No can do. House unit works well but noticed today that vacation setting turned off unknown to me and began reheating my home I turned it back on. Not sure about how that happened. Phone did get turned off to fly. Could that be the issue? Doesn’t seem right if so. Like the auto adjust for temp down in evening and back up in morning. Good unit. Easy to connect. Great tech support. If T9 would go down to 40-45 degrees I would have kept the garage unit. Replaced it with a T-4 unit. No more remote access there. No biggie.
This is a great thermostat. I installed it myself including the C wire adapter. I wanted a thermostat that can be set for furnace and AC to automatically change. Make sure you have the unit connected to WiFi so it will connect to you time zone. I connected to my Apple Home app and works fine.
T9 Smart Thermostat with 3 wireless Smart Room Sen
on December 27, 2022
Posted by: Luc R.
from New Brunswick (Atlantic), Canada
Frequency of use:Daily
Gender:Male
Verified Purchase:Yes
I have a 2,400 square feet bungalow, living room, dinning room are full south with big windows. There is a 15 feet hallway leading to the rooms on the other side (north), the HVAC thermostat for the central heating, cooling (heat pump) is in the hallway. So when it is sunny it get pretty warm in the south rooms and the heat gets to the thermostat making the north end room, less comfortable, and sometimes cold. In the winter the furnace does not start to make the north rooms comfortable so they gets cold. In summer air-conditioning starts because it is so warm in south rooms, making it uncomfortable again in north end rooms, been in this house 14 years and it has been our biggest issue so far.. I installed Honeywell T9 in hall way, a wireless smart room sensor in each of the north end rooms, office, bedroom and bathroom, then configuring the T9 to have these 3 sensors as the priority. I has now been a little over one month ago now; WOW now it is comfortable all the time, this is simply great and I highly recommend. Being able to give priority to one or multiple wireless smart room sensor changes everything. I am aware that the T9 is capable of doing other fancier things, but for this house this is the best, greatest thing. Thanks Honeywell / resido for this invention. Luc