Top-rated smoke detector installation pros.

Get matched with top smoke detector installation pros in O Fallon, MO

Enter your ZIP and get matched with up to 5 pros

Need a pro for your smoke detector installation project in O Fallon, MO?

Select your specific project to find the pro for you.

TRUSTED BY O FALLON, MO HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon706
    Verified smoke detector installation services reviews

Find Smoke detector installation pros in O Fallon

Avatar for Mr. Electric of St. Louis

Mr. Electric of St. Louis

248 Grand Ave
5.00(
11
)
Approved Pro

Mr. Electric of St. Louis

248 Grand Ave
5.00(
11
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
267 local quotes requested

Electricity makes the modern world go round. When your power shorts out, call Mr. Electric of St. Louis for quick and convenient repairs. We offer our electrical expertise in St. Louis City and County, St. Charles City & County, Belleville and surrounding area. Your home or business is in good hands, whether you’re hoping to overhaul the wiring or install ceiling fans. Our promise to you is the best work, whether your needs are common or complicated.

"Kyle came out to our house from Mr. Electric fix a circuit that was not functioning. Kyle used a very good approach of identifying what was working and what was not. He then did a further scan and found the problem that was an outlet receptacle that had a loose connection and ultimately shorted out to some extent. Kyle was courteous, easy to work with and very good at communication. He kept us abreast of the progress."

Lionel M on August 2025

Electricity makes the modern world go round. When your power shorts out, call Mr. Electric of St. Louis for quick and convenient repairs. We offer our electrical expertise in St. Louis City and County, St. Charles City & County, Belleville and surrounding area. Your home or business is in good hands, whether you’re hoping to overhaul the wiring or install ceiling fans. Our promise to you is the best work, whether your needs are common or complicated.

"Kyle came out to our house from Mr. Electric fix a circuit that was not functioning. Kyle used a very good approach of identifying what was working and what was not. He then did a further scan and found the problem that was an outlet receptacle that had a loose connection and ultimately shorted out to some extent. Kyle was courteous, easy to work with and very good at communication. He kept us abreast of the progress."

Lionel M on August 2025


Avatar for ADT

ADT

3750 Priority Way South Dr
4.53(
734
)
Approved Pro

ADT

3750 Priority Way South Dr
4.53(
734
)
Approved Pro
Customers say: Terrific value
3733 local quotes requested
151 years of experience

ADT home security systems are backed by more than 145 years of experience. As the leader in home security, ADT can help you customize a home security system with easy-to-use equipment and special security features to meet your safety needs. We have service centers nationwide that can install an ADT home security system within 24 hours in most areas. Once your home is equipped with our top-of-the-line system, it is connected to a network of ADT Monitoring Centers nationwide which deliver non-stop security monitoring 365 days a year. All of our installation technicians are internal employees, and not third-party contractors. You can count on your Security Advisor to take the time to set up your system properly, help you understand how the system works, and help make sure your home and family are thoroughly protected.

"Bought security through ADT mainly for the automation options that come with the system. My spouse loves being able to turn on and off our lights in different areas of the house while we are gone. We travel often, so giving the illusion that we are home is a good deterrent."

Luke W on October 2025

ADT home security systems are backed by more than 145 years of experience. As the leader in home security, ADT can help you customize a home security system with easy-to-use equipment and special security features to meet your safety needs. We have service centers nationwide that can install an ADT home security system within 24 hours in most areas. Once your home is equipped with our top-of-the-line system, it is connected to a network of ADT Monitoring Centers nationwide which deliver non-stop security monitoring 365 days a year. All of our installation technicians are internal employees, and not third-party contractors. You can count on your Security Advisor to take the time to set up your system properly, help you understand how the system works, and help make sure your home and family are thoroughly protected.

"Bought security through ADT mainly for the automation options that come with the system. My spouse loves being able to turn on and off our lights in different areas of the house while we are gone. We travel often, so giving the illusion that we are home is a good deterrent."

Luke W on October 2025


"Great job. I would definitely hire again."

Maureen K on February 2022

We are a full-service electric, media, security and energy solution contractor in St. Louis, MO, built on a strong foundation of good old-fashioned work ethics. Our office hours are M-F 8-4:30, we offer after hours emergency service as well.

"Great job. I would definitely hire again."

Maureen K on February 2022


Avatar for Power Up Electrical Contractors, LLC

Power Up Electrical Contractors, LLC

2060 Craigshire Road
4.73(
15
)
Approved Pro

Power Up Electrical Contractors, LLC

2060 Craigshire Road
4.73(
15
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
265 local quotes requested

We are a 4.9 star rating on Home Advisor/Angie's List. Licensed and Union. We can take on a wide range of residential and commercial electrical projects to include full installation for additions and remodels as well as wiring and panel upgrades, and a variety of other projects. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction. We accept Check, Cash or Credit Cards

"It went great, I was selling my house and some electrical work was needed after the inspector flagged some things and closing date was coming quick. I got a hold of Jeff and he came to the house and said no problem we can take care of it. Very happy with the work that was done."

Tim W on February 2025

We are a 4.9 star rating on Home Advisor/Angie's List. Licensed and Union. We can take on a wide range of residential and commercial electrical projects to include full installation for additions and remodels as well as wiring and panel upgrades, and a variety of other projects. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction. We accept Check, Cash or Credit Cards

"It went great, I was selling my house and some electrical work was needed after the inspector flagged some things and closing date was coming quick. I got a hold of Jeff and he came to the house and said no problem we can take care of it. Very happy with the work that was done."

Tim W on February 2025


Avatar for Recon Electric LLC

Recon Electric LLC

770 Spirit 40 Park Drive
5.00(
2
)
Approved Pro

Recon Electric LLC

770 Spirit 40 Park Drive
5.00(
2
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
42 local quotes requested

RECON Electric is your local, family owned, reliable electrician. Licensed, Bonded and Insured. We service residential and commercial customers in the St. Louis and St. Charles County area. At RECON, our standard is exceptional workmanship and we guarantee it! We will deliver 5 star customer service and rapid response times. Call us today to find out how we can keep your project on time and on budget!

"Great! Job done quickly."

Ken T on April 2024

RECON Electric is your local, family owned, reliable electrician. Licensed, Bonded and Insured. We service residential and commercial customers in the St. Louis and St. Charles County area. At RECON, our standard is exceptional workmanship and we guarantee it! We will deliver 5 star customer service and rapid response times. Call us today to find out how we can keep your project on time and on budget!

"Great! Job done quickly."

Ken T on April 2024


Avatar for SafeStreets - ADT Authorized Provider

SafeStreets - ADT Authorized Provider

615 N 150 E
4.85(
293
)
Approved Pro

SafeStreets - ADT Authorized Provider

615 N 150 E
4.85(
293
)
Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
58 local quotes requested

For 140 years, ADT has been the leading home security provider in the country. SafeStreets, ADT's Authorized Provider, sells and installs ADT-monitored home security systems. Our team consists of 300+ trained consultants, covering more than 90% of the United States across 44 states. We are experts on the latest smart-home technology, and highly focused on giving all customers a 5-Star Experience™. SafeStreets is committed to bringing high-tech security equipment, backed by 24/7 professional monitoring, to the place that matters most - your home. We have same day and next day appointments available, all scheduled within a one hour window. Call us anytime for a custom home security assessment and free quote! Comprehensive Security System ADT 24/7 Monitoring Touch Screen Control Panel Motion Detectors, Glass Break Sensors, & Point-of-Entry Sensors Indoor, Outdoor, & Doorbell Cameras Smart Home Automation Smoke, Carbon Monoxide, & Flood Sensors Mobile App Control Cellular Connection Back-up Battery Supply Maintenance/Extended Warranty Homeowners Insurance Certificate Theft Protection Guarantee

"Biggest thing we love about this alarm package is that there are flexible options and complex options available. We are simple people so we don’t need anything fancy but its nice knowing we can upgrade if our needs ever change. They’ve been terrific to work with and get this job done for us."

Camille C on October 2025

For 140 years, ADT has been the leading home security provider in the country. SafeStreets, ADT's Authorized Provider, sells and installs ADT-monitored home security systems. Our team consists of 300+ trained consultants, covering more than 90% of the United States across 44 states. We are experts on the latest smart-home technology, and highly focused on giving all customers a 5-Star Experience™. SafeStreets is committed to bringing high-tech security equipment, backed by 24/7 professional monitoring, to the place that matters most - your home. We have same day and next day appointments available, all scheduled within a one hour window. Call us anytime for a custom home security assessment and free quote! Comprehensive Security System ADT 24/7 Monitoring Touch Screen Control Panel Motion Detectors, Glass Break Sensors, & Point-of-Entry Sensors Indoor, Outdoor, & Doorbell Cameras Smart Home Automation Smoke, Carbon Monoxide, & Flood Sensors Mobile App Control Cellular Connection Back-up Battery Supply Maintenance/Extended Warranty Homeowners Insurance Certificate Theft Protection Guarantee

"Biggest thing we love about this alarm package is that there are flexible options and complex options available. We are simple people so we don’t need anything fancy but its nice knowing we can upgrade if our needs ever change. They’ve been terrific to work with and get this job done for us."

Camille C on October 2025


Avatar for SnapPro Media, LLC

SnapPro Media, LLC

1104 Pike St
5.00(
3
)
Approved Pro

SnapPro Media, LLC

1104 Pike St
5.00(
3
)
Approved Pro
Customers say: Quick response
8 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! Book with us online or feel free to give us a call today!

"The team at SnapPro are top-notch and will go above and beyond to ensure you satisfaction. Theyâ re a great group and youâ ll be glad you chose them for your next project!!"

John P on August 2024

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! Book with us online or feel free to give us a call today!

"The team at SnapPro are top-notch and will go above and beyond to ensure you satisfaction. Theyâ re a great group and youâ ll be glad you chose them for your next project!!"

John P on August 2024


Monitex Security, Inc.

670 Myrtle Avenue, Suite 6342
New on AngiNew on Angi
Approved Pro

Monitex Security, Inc.

670 Myrtle Avenue, Suite 6342
New on AngiNew on Angi
Approved Pro
8 years of experience
Free onsite estimate

We only provide Virtual Remote Guardian. We do not offer any other services. We offer over 20 years experience in the Security Services Industry. We've established a solid reputation in security projects for residential homes in the Lewisville and surrounding areas. We are committed to providing a personalized service for each individual project we take on. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.

We only provide Virtual Remote Guardian. We do not offer any other services. We offer over 20 years experience in the Security Services Industry. We've established a solid reputation in security projects for residential homes in the Lewisville and surrounding areas. We are committed to providing a personalized service for each individual project we take on. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.


Avatar for Reliant, LLC

Reliant, LLC

418 Valley Spring Dr
4.97(
18
)
Approved Pro

Reliant, LLC

418 Valley Spring Dr
4.97(
18
)
Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
2 years of experience

Reliant is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"He was nice and experienced. I would hire him again."

Antonio M on March 2024

Reliant is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"He was nice and experienced. I would hire him again."

Antonio M on March 2024


Avatar for Rebecca's Handyman Services LLC

Rebecca's Handyman Services LLC

2021 Riverdew Drive
5.00(
1
)
Approved Pro

Rebecca's Handyman Services LLC

2021 Riverdew Drive
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

Rebecca's Services is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations.

"Joe from Rebeccaâ s Handyman Services was able to come out the same day I called about removing old, cracking caulk around my garage door. Price was very reasonable and he did a great job, and made sure to clean up the area afterwards. Iâ ll be using him again for other â honey-doâ items in the near future."

Shirley R on August 2022

Rebecca's Services is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations.

"Joe from Rebeccaâ s Handyman Services was able to come out the same day I called about removing old, cracking caulk around my garage door. Price was very reasonable and he did a great job, and made sure to clean up the area afterwards. Iâ ll be using him again for other â honey-doâ items in the near future."

Shirley R on August 2022

...
Showing 1-10 of 223
Smoke Detector Installers questions, answered by experts

Using proper equipment, ventilation systems, and adhering to application standards.

Costs depend on the number of cameras, network configuration, labor, and smart security features.

A study from the University of North Carolina found that security system signs were one of the top ten deterrents for burglars when choosing a target, so they do have some effect. However, you can get into legal trouble for putting up fake signage, so it’s best only to put up signs when you have the alarms to back them up.

It is possible to spend only $30 on a camera that can cover one particular area. You wouldn't need to buy software, hardware, cables, or anything else. Instead, it would connect wirelessly to an app on your phone where you could monitor the feed and take necessary actions at your own discretion.

It depends on the type of sensor your home security system uses. If it’s a motion detector, any moving thing could set it off, from a roaming pet to a wind-blown curtain. Contact sensors would be triggered by the window being opened or moved. Also, be aware that any sensors placed too close to your vents could trigger false alarms whenever your heat or air conditioning is running.

The O Fallon, MO homeowners’ guide to smoke detector installation services

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