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Thermostat installers and replacers in Decatur

Avatar for Quality HVAC Services LLC

Quality HVAC Services LLC

22393 Fain Rd
5.00(
2
)
Approved Pro

Quality HVAC Services LLC

22393 Fain Rd
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
4 years of experience

We're dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company is built on honesty and integrity. We specialize in central A/C and cooling systems as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"n/a"

Meike F on June 2021

We're dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company is built on honesty and integrity. We specialize in central A/C and cooling systems as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"n/a"

Meike F on June 2021


Avatar for Essential Comfort LLC

Essential Comfort LLC

1506 Barkley Bridge Road
5.00(
3
)
Approved Pro

Essential Comfort LLC

1506 Barkley Bridge Road
5.00(
3
)
Approved Pro
Customers say: Quick response
10 years of experience
Free onsite estimate

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

""

Derek N on February 2019

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

""

Derek N on February 2019


Avatar for Aire Serv of Huntsville

Aire Serv of Huntsville

7900 Cypressbrook Dr. NW
4.85(
602
)
Approved Pro

Aire Serv of Huntsville

7900 Cypressbrook Dr. NW
4.85(
602
)
Approved Pro
Customers say: True professional
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
13 years of experience

Searching for a heating, ventilation and air conditioning (HVAC) company in the Huntsville, Madison and Hampton Cove area? For expert heating and air conditioning repairs, maintenance and installations, Aire Serv of Huntsville is the trusted source for all your HVAC needs. Aire Serv of Huntsville, promises to do the job right the first time. We tell you the price upfront before we start, no hidden fees guaranteed. When you choose us, you can be sure you are getting the best in the business. We install all types of air conditioning systems. Our expert Home Comfort Designers' knowledge will be invaluable as we determine what type of air conditioning system is right for your home. We will work with you to evaluate your air conditioning usage needs, as well as what type of A/C system will fit your home and budget. Make us •Your Comfort Company• and our world class technicians will solve your heating and air conditioning concerns today.

"Yes, the young man that came to surface. My system was just such a nice person very professional, and he really helped me out. I asked him to change the air filter, which is very high on the wall and without hesitation he was willing to help me out."

Benson B on August 2025

Searching for a heating, ventilation and air conditioning (HVAC) company in the Huntsville, Madison and Hampton Cove area? For expert heating and air conditioning repairs, maintenance and installations, Aire Serv of Huntsville is the trusted source for all your HVAC needs. Aire Serv of Huntsville, promises to do the job right the first time. We tell you the price upfront before we start, no hidden fees guaranteed. When you choose us, you can be sure you are getting the best in the business. We install all types of air conditioning systems. Our expert Home Comfort Designers' knowledge will be invaluable as we determine what type of air conditioning system is right for your home. We will work with you to evaluate your air conditioning usage needs, as well as what type of A/C system will fit your home and budget. Make us •Your Comfort Company• and our world class technicians will solve your heating and air conditioning concerns today.

"Yes, the young man that came to surface. My system was just such a nice person very professional, and he really helped me out. I asked him to change the air filter, which is very high on the wall and without hesitation he was willing to help me out."

Benson B on August 2025


Avatar for Higdon Heating and Cooling LLC

Higdon Heating and Cooling LLC

692 Union Rd
5.00(
12
)
Approved Pro

Higdon Heating and Cooling LLC

692 Union Rd
5.00(
12
)
Approved Pro
21 local quotes requested
33 years of experience

Higdon Service is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 30 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"Crew was wonderful. Talked me through the replacement of my unit. I understood everything that they was doing. They did a fantastic job. Didn?t leave trash out. Very professional. I would recommend them to anyone."

Tina T on June 2025

Higdon Service is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 30 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"Crew was wonderful. Talked me through the replacement of my unit. I understood everything that they was doing. They did a fantastic job. Didn?t leave trash out. Very professional. I would recommend them to anyone."

Tina T on June 2025


Avatar for Wheeler HVAC LLC

Wheeler HVAC LLC

105 Pleasant Grove Road
5.00(
4
)
Approved Pro

Wheeler HVAC LLC

105 Pleasant Grove Road
5.00(
4
)
Approved Pro
1 years of experience
Free onsite estimate

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"Timothy is incredibly friendly and easy to get in touch with. Another company had come out to diagnose my AC and claimed they fixed it, but when I got home, it still wasn't working. I reached out to Timothy around 9:00 pm just to ask about getting a diagnosis. He asked me a few questions, assured me he could fix it, and said he could come out that same night. He fixed it quickly, was honest, and answered all my questions. I will be using him for all our HVAC needs in the future and would highly reccomend him to anyone needing HVAC work done!"

Ashley J on August 2025

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"Timothy is incredibly friendly and easy to get in touch with. Another company had come out to diagnose my AC and claimed they fixed it, but when I got home, it still wasn't working. I reached out to Timothy around 9:00 pm just to ask about getting a diagnosis. He asked me a few questions, assured me he could fix it, and said he could come out that same night. He fixed it quickly, was honest, and answered all my questions. I will be using him for all our HVAC needs in the future and would highly reccomend him to anyone needing HVAC work done!"

Ashley J on August 2025


Avatar for Aire Serv of Huntsville

Aire Serv of Huntsville

3900 Cypressbrook Drive Northwest
4.64(
493
)
Approved Pro

Aire Serv of Huntsville

3900 Cypressbrook Drive Northwest
4.64(
493
)
Approved Pro
Customers say: Quick response
422 local quotes requested
36 years of experience

Aire Serv of Huntsville is your trusted heating and air conditioning partner in the heart of Rocket City. We provide installations, HVAC maintenance, AC repair, duct cleaning, indoor air quality system recommendations, and offer reliable solutions for your family or business needs. Our locally owned business prides itself on building long-lasting relationships with our neighbors throughout our community. Ensuring comfort, safety, and satisfaction for every customer we serve. With a focus on honesty, integrity, and excellence; we use the Neighborly Done Right Promise™- if it’s not done right, we promise to make it right. Choose Aire Serv of Huntsville for quality service you can trust.

"They provided basic maintenance and cleaning. They didn't notice a buzz due to a mismatched capacitor that I had another company come out six months later and fix."

Carla H on March 2018

Aire Serv of Huntsville is your trusted heating and air conditioning partner in the heart of Rocket City. We provide installations, HVAC maintenance, AC repair, duct cleaning, indoor air quality system recommendations, and offer reliable solutions for your family or business needs. Our locally owned business prides itself on building long-lasting relationships with our neighbors throughout our community. Ensuring comfort, safety, and satisfaction for every customer we serve. With a focus on honesty, integrity, and excellence; we use the Neighborly Done Right Promise™- if it’s not done right, we promise to make it right. Choose Aire Serv of Huntsville for quality service you can trust.

"They provided basic maintenance and cleaning. They didn't notice a buzz due to a mismatched capacitor that I had another company come out six months later and fix."

Carla H on March 2018


Avatar for Skyward Heating Air and Plumbing

Skyward Heating Air and Plumbing

204 Pride Lane
4.78(
36
)
Approved Pro

Skyward Heating Air and Plumbing

204 Pride Lane
4.78(
36
)
Approved Pro
Customers say: Super punctual
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
720 local quotes requested

We do plumbing, heating, and cooling. We show up on time and go the extra mile for our customers. We service and install a wide array of products with the upmost quality and assurance that you will be satisfied.

"Great responsive quote"

ken k on July 2025

We do plumbing, heating, and cooling. We show up on time and go the extra mile for our customers. We service and install a wide array of products with the upmost quality and assurance that you will be satisfied.

"Great responsive quote"

ken k on July 2025


Avatar for Annette Hale's Indoor Comfort Systems

Annette Hale's Indoor Comfort Systems

1201 Church St NW
4.69(
116
)
Approved Pro

Annette Hale's Indoor Comfort Systems

1201 Church St NW
4.69(
116
)
Approved Pro
Customers say: Quality work
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
415 local quotes requested

Annette Hale's Indoor Comfort Systems. We offer quality service at an affordable price. Contact us today about an estimate!

"This was the second system we purchased. The first was a replacement heat pump for our upstairs system. This one was an air conditioner and gas pack heating for the main residence. We purchased this through their rebate offer via Costco. We really wanted this to be a no problems sale. We paid in cash (check) the day before it was installed. The basic unit seems to work correctly and reliably so far. The inside has been comfortable since it was installed. That’s the good side of the story. The unit upstairs was installed with a programmable thermostat - Which I did not particularly want. That programmable thermostat is awkward to use - And I am a degreed electronic engineer! I eventually replaced it with a simple non-programmable thermostat. When I got the quote on the recent main unit replacement, I insisted on keeping my simple to use Honeywell Electronic heating and cooling thermostat. We are retired and one of us is usually home so there is zero reason to use a programmable thermostat and frankly the Lennox programmable one is a misery to use. When the installers arrived I placed the installation manual for the existing Honeywell thermostat on the thermostat itself - Impossible to miss! The main unit was installed correctly and seems to work well. But the installer had difficulty hooking up the Honeywell thermostat due to wiring problems eventually found under the house in the thermostat wiring. It was a warm day on installation day and the heating settings were only briefly tested. Then the AC settings were tested and the installer was very quickly out the door. A week or so later it got cool and I switched to heating. In heat mode the circulation fan would not run unless the heat was actually heating despite the thermostat being set to fan “ON”. I am an electronic engineer and I suspected there was an error in the hookup of the thermostat. Turns out I was correct - The installer had set the internal thermostat switch to “heat pump” instead of AC with gas heating he had installed. Furthermore he had hooked up one thermostat wire to the wrong terminal. He has to go out of his way to make these mistakes instead of leaving the thermostat wiring and internal switch setting as it had been. I corrected these two errors and then the system ran correctly. Anyone can make a mistake, but it takes something “special” to be so sloppy in testing the installation not to notice it wasn’t acting correctly! Well I thought the only problem I had with Annette Hale Indoor Comfort Air was the sloppy installer. Just this morning the sales person called me to ask if we had paid for the unit from several weeks ago! The same sales person who picked up the check the day before - Which had cleared the bank some time ago. I may not be have been very polite with this person - It seems their accounting people are just as sloppy as their installer. Eventually I was called back and he apologized that they had been paid, they just somehow credited it wrong. I would never again use this installer. They screwed up part of the installation and then may have tried to collect twice for the same work! Sloppy, very sloppy! The Lennox equipment itself except for the miserable programmable Lennox thermostat works well and seems of good quality."

Charles W on May 2021

Annette Hale's Indoor Comfort Systems. We offer quality service at an affordable price. Contact us today about an estimate!

"This was the second system we purchased. The first was a replacement heat pump for our upstairs system. This one was an air conditioner and gas pack heating for the main residence. We purchased this through their rebate offer via Costco. We really wanted this to be a no problems sale. We paid in cash (check) the day before it was installed. The basic unit seems to work correctly and reliably so far. The inside has been comfortable since it was installed. That’s the good side of the story. The unit upstairs was installed with a programmable thermostat - Which I did not particularly want. That programmable thermostat is awkward to use - And I am a degreed electronic engineer! I eventually replaced it with a simple non-programmable thermostat. When I got the quote on the recent main unit replacement, I insisted on keeping my simple to use Honeywell Electronic heating and cooling thermostat. We are retired and one of us is usually home so there is zero reason to use a programmable thermostat and frankly the Lennox programmable one is a misery to use. When the installers arrived I placed the installation manual for the existing Honeywell thermostat on the thermostat itself - Impossible to miss! The main unit was installed correctly and seems to work well. But the installer had difficulty hooking up the Honeywell thermostat due to wiring problems eventually found under the house in the thermostat wiring. It was a warm day on installation day and the heating settings were only briefly tested. Then the AC settings were tested and the installer was very quickly out the door. A week or so later it got cool and I switched to heating. In heat mode the circulation fan would not run unless the heat was actually heating despite the thermostat being set to fan “ON”. I am an electronic engineer and I suspected there was an error in the hookup of the thermostat. Turns out I was correct - The installer had set the internal thermostat switch to “heat pump” instead of AC with gas heating he had installed. Furthermore he had hooked up one thermostat wire to the wrong terminal. He has to go out of his way to make these mistakes instead of leaving the thermostat wiring and internal switch setting as it had been. I corrected these two errors and then the system ran correctly. Anyone can make a mistake, but it takes something “special” to be so sloppy in testing the installation not to notice it wasn’t acting correctly! Well I thought the only problem I had with Annette Hale Indoor Comfort Air was the sloppy installer. Just this morning the sales person called me to ask if we had paid for the unit from several weeks ago! The same sales person who picked up the check the day before - Which had cleared the bank some time ago. I may not be have been very polite with this person - It seems their accounting people are just as sloppy as their installer. Eventually I was called back and he apologized that they had been paid, they just somehow credited it wrong. I would never again use this installer. They screwed up part of the installation and then may have tried to collect twice for the same work! Sloppy, very sloppy! The Lennox equipment itself except for the miserable programmable Lennox thermostat works well and seems of good quality."

Charles W on May 2021


Avatar for Bama Air Systems Mechanical Contractors, Inc

Bama Air Systems Mechanical Contractors, Inc

78 Lindsey Rd
4.85(
13
)
Approved Pro

Bama Air Systems Mechanical Contractors, Inc

78 Lindsey Rd
4.85(
13
)
Approved Pro
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
265 local quotes requested

Complete residential and commercial heating and cooling service and sales including Geo Thermal systems, sheet metal fabrication, grease hood installation, grease duct fabrication and attic insulation. Proud member of the TVA Energy RIght Partners program.

"We were very happy with Bama Air Systems. They came out for an estimate on a Mini-Split in a timely manner, and had a quick turn-around time for installation. Their service professionals, Austin, Zach and JC, were on time, friendly and courteous, and very efficient. The installation took less than a day, and they cleaned up the construction debris thoroughly. We would definitely recommend them for your HVAC needs."

Lynne H on February 2024

Complete residential and commercial heating and cooling service and sales including Geo Thermal systems, sheet metal fabrication, grease hood installation, grease duct fabrication and attic insulation. Proud member of the TVA Energy RIght Partners program.

"We were very happy with Bama Air Systems. They came out for an estimate on a Mini-Split in a timely manner, and had a quick turn-around time for installation. Their service professionals, Austin, Zach and JC, were on time, friendly and courteous, and very efficient. The installation took less than a day, and they cleaned up the construction debris thoroughly. We would definitely recommend them for your HVAC needs."

Lynne H on February 2024


CoolPro Heating And Air Conditioning

1345 Lamon Chapel Loop
5.00(
9
)
Approved Pro

CoolPro Heating And Air Conditioning

1345 Lamon Chapel Loop
5.00(
9
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
861 local quotes requested

CoolPro Heating and Air Conditioning. Coolpro offers service for all types of equipment on residential and commercial. Being a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started!

"Derrick did an outstanding job installing our HVAC unit. He took his time to ensure everything was done properly and paid close attention to detail throughout the process. He communicated and coordinated with us very well, making the whole experience smooth and stress-free. Highly recommend his services!"

Michael B on July 2025

CoolPro Heating and Air Conditioning. Coolpro offers service for all types of equipment on residential and commercial. Being a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started!

"Derrick did an outstanding job installing our HVAC unit. He took his time to ensure everything was done properly and paid close attention to detail throughout the process. He communicated and coordinated with us very well, making the whole experience smooth and stress-free. Highly recommend his services!"

Michael B on July 2025

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Showing 1-10 of 352
FAQs for thermostat installation and replacement projects in Decatur, AL

Smart thermostats may be worth it for many homeowners. They come with various features, including voice control and smartphone apps. Vacation mode can help lower energy usage when you’re out of town for an extended period. Alert warnings let you know about major spikes or drops in temperature. Smartphone apps can track energy usage, and smart thermostats can learn your routine over time to adjust your temperature and reduce wasted energy consumption automatically.

You typically do not need more than one smart thermostat. While it’s common to see multiple mechanical thermostats throughout a large home, multiple smart thermostats may try to override each other. This can lead to problems with the HVAC system. Ensure the unit you buy has the option for dual- or multi-zoned systems to avoid compatibility issues.

Installing a programmable or smart thermostat may save you $180 per year in utility costs. A big part of this comes from a smart thermostat’s ability to learn and adapt to your regular routines. With smartphone apps or web-based interfaces, you also have the option to control your thermostat when you’re not home.

The Decatur, AL homeowners’ guide to thermostat installations and replacements

From average costs to expert advice, get all the answers you need to get your job done.

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