How to Replace Old Thermostats

We recently upgraded all of our main floor thermostats for new programmable ones (which had been on our to-do list since we first bought the house) and it is seriously one of the best upgrades we’ve done this winter.

AudreeLeeBlog - Replacing our Thermostats 01

Our old ones had yellowed (the one pictured bellow was one of the whitest one) over time and were not accurate at all. To have a comfortable temperature throughout the house, we at to set most of them at 15°C and one at 25°C. We were constantly turning them up or down to try and even out the temperature in every room. This I’m sure is as big factor in the massive cost increase of our electricity bills during the colder months of the year.

We decided on these TH303 Aube programmable thermostats (which I can’t seem to find online aside for the owner’s guide).

AudreeLeeBlog - Replacing our Thermostats 02

The installation process was really quite simple and we had all 5 switched out in about an hour. First and foremost, you want to turn off the breaker of the thermostat you are working on. Since our house is older, our panel barely has any indication of which breaker is for what so we went with the simple more secure route and turned off the main breaker which cut power for the entire house.

Then, we removed the cover cap of the old thermostat, unscrewed the two screws which held the main part of it in place to the wall and pull it away (TIP: it may be helpful to use a box cutter around the perimeter of the old thermostat before pulling it off the wall to avoid peeling paint off with it – remember ours had been there for years and had seen many coats of paint making this steps absolutely necessary). To disconnect the old thermostat simply remove the twist-on wire connectors, and pull the wires apart.

Take your new thermostat and twist the ends of the wires around the wires from the wall.

AudreeLeeBlog - Replacing our Thermostats 03

Screw on the twist-on wire connectors (we discarded the old ones and used the ones provided with our thermostat).

AudreeLeeBlog - Replacing our Thermostats 04

For a little bit of added security, we like to secure everything with electrical tape therefore preventing anything from moving while pushing everything back into the wall.

AudreeLeeBlog - Replacing our Thermostats 05

Pushing everything carefully back into the wall, level the thermostat and screw it in place using the two provided screws.

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Put the cover in place and screw the bottom screw to hold it securely in place and voilà!

AudreeLeeBlog - Replacing our Thermostats 07

We played around with the settings for the next few days until we figured out what temperatures worked for us at what time. We love having the ability to set temperatures for different times (weekday – wake-up, weekday – leave for work, weekday – arrival back at home, weekday – overnight and weekends). We have really felt the difference in our home and it is so nice to come home to a perfectly tempered house in every room. It was well worth the investment since we no longer have to worry about it and constantly adjust our thermostats, even the cats seem to notice the difference! We can’t wait to see if this change will impact our electricity bills and if so, by how much.

Have you done any thermostat replacement in your house? Did it affect your heating bills? As anyone tried the Nest thermostats which you can control from your phone no matter where you are, are they worth the expense?

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