a man walking in front of a van

The Name You Trust for your

Having a
Call or Find Your Nearest Pro!

The zip code you entered is not associated with one of our locations. Please visit our Locations page to find your closest location.

Contact Us

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

a clock sitting in front of a mirror posing for the camera

Basic Thermostat Replacement Guide
1-800-Plumber +Air of Fairfield County

Of all the devices you have in your home, the humble thermostat has more potential to save or cost you serious money than almost anything else in your home. A properly set up thermostat can keep your home comfortable and save you money or cost you way more than it should and even shorten the life of critical infrastructure like your HVAC unit.

If you suspect your thermostat is behaving erratically or your temperatures won't stay where you want them, it could be time to replace it. Since a thermostat is a relatively simple device, many DIY fans can take on this task and get your home's heating and cooling back in line.

Basic Thermostat Replacement Guide

Before you begin, decide whether or not the current thermostat model meets your needs. Purchasing an exact replacement model might make installation easier. If you choose an exact replacement, your installation should be straightforward as long as you follow the included instructions.

Do An Internet Search for the Thermostat's Make and Model

If you find your make and model, you are in luck, and replacement should be a snap. Once you get your replacement thermostat, prepare for the installation by turning off the breaker for your heating and air conditioning. Mark the wires with tape and write down the letter for the proper connector on each one. Finally, follow the included instructions.

However, it might not be possible to find an exact replacement, or perhaps your current thermostat doesn't include nice features like advanced climate scheduling. If that's the case, you'll need to dig a little deeper to find the thermostat that meets your requirements.

If You Want a Newer or Different Thermostat Model

There is a dizzying array of different thermostat models with all sorts of scheduling features and more. Make sure you don't just grab the most feature-packed model if you are willing to learn how to use it, as you could end up in a worse situation than you had with the old buggy thermostat. Ask your local professional for recommendations or call 1800 Plumber of Shelton, CT and have them do it for you.

As with any installation, turn off the breakers and mark the wires with the connector letter on the back of the unit. Be sure to carefully mark the wires according to the connector they were attached to with the old thermostat. Often, small sticky markers come with new thermostats, so use them if available. Then, with good instructions, the rest of the installation should be easy.

Think About the Main Cost: Your Time

Maybe you don't have the know-how or time to change your thermostat. All is not lost! Call 1800 Plumber of Shelton, CT, and they will have your home's climate control under control. Call us today at 203-921-1560, and we can come out and survey your area! We are available 24/7.

Ready to
Contact Us Now!

Contact Us

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Placing your New Thermostat

Your new thermostat should come with stickers. Place the stickers onto the wires. You can reference the old thermostat's wiring and check your new manual. You'll then need to loosen the terminal screws.

Place the new base over the wires and make sure it's level.

Next, drill the holes making sure to follow the directions in the manual. Place the plastic inserts into your wall.

You can then use a combination stripper to trim the wires if necessary.

Once it's connected you can activate the power back on.

Checking the Functionality

As soon as you've figured out just how to change out your old analog thermostat with a digital thermostat, you're practically prepared to go. But first, let's check to make sure it is working properly.

You can set the thermostat to your furnace. The AC will come at a different time. Let them have 5 minutes to activate. If it's not working correctly take a look at what you did and make sure no steps were missed.

At times, you may need to reset the thermostat. You should find a button that allows you to reset it.

Once you check to make sure it is functioning, you'll need to program your thermostat. This is where you need to check the manual for specific instructions, depending on your new thermostat.

A programmable thermostat is your best option to save on your electricity bill.

a man standing in front of thermostat

Exploring Thermostat Replacement in Shelton, CT

After reviewing this overview, you must have a far better understanding of thermostat replacement.

Do you need assistance with cooling and heating services in Shelton? Call us today at 203-921-1560 and we can come out and survey your area! We are available 24/7.

Positive: Professionalism , Punctuality , Quality , Responsiveness , Value

Satisfied Customer

My daughter Natalie Permenter actually ordered the service. I'm at her house during the day to keep my grandson. I was very impressed by Emanuel, the plumber that cam. He was very professional and seemed to really care about his clients. Natalie tells me the lady in the office also showed professionalism and a genuine desire to help. Emanuel was disappointed that he couldn't get the job done on day one; but promised to come back the next day. True to his word he was here bright and early. I am so impressed to finally find a company that really cares about the consumer; not just the dollar.

Judi W.

Emanuel Reyes replaced my kitchen faucet and sink basket strainer today, 3/2/20. I appreciate the quality of his work. Emanual did a fantastic job. If I need a plumber in the future, I'll call 1-800-Plumber and ask for Emanuel Reyes.

Jean Broussard M.

Nick did a great job and very nice and professional. Thanks

Evonne H.

did a excellent job on repiping my house n clean n very please with the work they done.

Willie W.

"Great service ,plumber was very good and did a great job .very happy"

Joseph G.

Chad C. with 1-800-plumber really cared. He was extremely thorough and made sure the job was done correctly. Would definitely recommend him!

Kathy Y.

Excellent work by all, starting with the ease of making an appointment, the arrival of the service crew in a timely manner. They were on neatly dressed, very pleasant, explained everything and took the little extra steps to make the visit a success. I have used this plumber three times now and have always had exceptional service from them.

Jan C.

Friendly, courteous, knowledgeable.

Marylin L.

Although plumbing is an extremely expensive repair, these guys always get it right and make it as painless as possible.

Satisfied Customer

Availability icon



costs at the end of a job icon

No surprise

costs at the end of a job

Committed to on-time arrivals icon


Committed to on-time arrivals


We know your time is valuable. Select the day and time that you would prefer service and we will contact you to confirm this appointment. We look forward to meeting your needs!

Serving Shelton, CT and the Surrounding Areas

1-800-PLUMBER +AIR of Shelton
97 Bridgeport Ave #8
Shelton, CT 06484

Our Service Area:
06468, 06484, 06606, 06883, 06890,
06880, 06881, 06611, 06612, 06851,
06824, 06851, 06824, 06825, 06855,
06807, 06820, 06830, 06840, 06850,
06853, 06854, 06858, 06859, 06870,
06878, 06889, 06897, 06901, 06902,
06905, 06906, 06907, 06910, 06911,
06927, 06903, 06831.