Top 10 central air conditioning installation services in O'Fallon, MO

Porch Pro Headshot AAA Plumbing
Central Air Conditioning Installation
Serves O'Fallon, Missouri
(1,215)
AAA Home Services has been family owned and operated for over 44 years, and AAA has continued to serve St. Louis, Jefferson, St. Charles, Warrenton and Lincoln counties with its award-winning staff. With reputable standings on Angie's List, BBB, the Chamber of Commerce and local media, we focus on g...Read more about AAA Plumbing
AAA Home Services has been family owned and operated for over 44 years, and AAA has continued to serve St. Louis, Jefferson, St. Charles, Warrenton and Lincoln counties with its award-winning staff. With reputable standings on Angie's List, BBB, the Chamber of Commerce and local media, we focus on g...Read more about AAA Plumbing
Porch Pro Headshot Perfect Air
Central Air Conditioning Installation
Serves O'Fallon, Missouri
(1,090)
Perfect Air Heating and Cooling knows the dynamics of air conditioning and heating for residential and commercial and is dedicated to providing our customers with quality service at competitive prices.
Perfect Air Heating and Cooling knows the dynamics of air conditioning and heating for residential and commercial and is dedicated to providing our customers with quality service at competitive prices.
Porch Pro Headshot Classic Aire Care
Central Air Conditioning Installation
Serves O'Fallon, Missouri
(821)
Welcome to Classic Aire Care Heating and Cooling: a topnotch heating, air conditioning and plumbing company serving the St. Louis area since 1926. We are a 100% customer focused company that strives to earn your satisfaction with every visit! You'll find we take our job seriously and value the trust...Read more about Classic Aire Care
Welcome to Classic Aire Care Heating and Cooling: a topnotch heating, air conditioning and plumbing company serving the St. Louis area since 1926. We are a 100% customer focused company that strives to earn your satisfaction with every visit! You'll find we take our job seriously and value the trust...Read more about Classic Aire Care
Porch Pro Headshot Vogel Heating & Cooling
Central Air Conditioning Installation
Serves O'Fallon, Missouri
(506)
Vogel Heating and Cooling has been the leader in St. Louis HVAC work since 1946. Family owned and operated, we specialize in Residential and Commercial HVAC, both installation and service for your air conditioner, furnace, heat pump and boiler, as well as Architectural Sheet Metal. We offer 24 Hour ...Read more about Vogel Heating & Cooling
Vogel Heating and Cooling has been the leader in St. Louis HVAC work since 1946. Family owned and operated, we specialize in Residential and Commercial HVAC, both installation and service for your air conditioner, furnace, heat pump and boiler, as well as Architectural Sheet Metal. We offer 24 Hour ...Read more about Vogel Heating & Cooling
Porch Pro Headshot NPM HEATING & COOLING LLC
Central Air Conditioning Installation
Serves O'Fallon, Missouri
If you are looking for heating and air conditioning services in the St. Louis or St. Charles area, you've come to the right place! NPM Heating and Cooling, works all over St Louis County & St. Charles County. Providing services such as central air conditioning repairs, floor heater replacements, air...Read more about NPM HEATING & COOLING LLC
If you are looking for heating and air conditioning services in the St. Louis or St. Charles area, you've come to the right place! NPM Heating and Cooling, works all over St Louis County & St. Charles County. Providing services such as central air conditioning repairs, floor heater replacements, air...Read more about NPM HEATING & COOLING LLC
Porch Pro Headshot Air Excellence
Central Air Conditioning Installation
Serves O'Fallon, Missouri
(374)
Air Excellence Heating & Cooling is one of the leading service providers for your HVAC needs serving the greater St. Louis area. Our company is a local, woman-owned business devoted to serving residential clients throughout the St. Louis area. Our dedication to providing quality service comes all th...Read more about Air Excellence
Air Excellence Heating & Cooling is one of the leading service providers for your HVAC needs serving the greater St. Louis area. Our company is a local, woman-owned business devoted to serving residential clients throughout the St. Louis area. Our dedication to providing quality service comes all th...Read more about Air Excellence
Porch Pro Headshot Hands on
Central Air Conditioning Installation
Serves O'Fallon, Missouri
Porch Pro Headshot Advantage Air
Central Air Conditioning Installation
Serves O'Fallon, Missouri
(371)
Advantage Air is an electrical contractor in Valley Park. Offering cable wiring and outlet installation as well as other services, they offer 16 years of experience.
Advantage Air is an electrical contractor in Valley Park. Offering cable wiring and outlet installation as well as other services, they offer 16 years of experience.
Porch Pro Headshot Reliable Heating & Cooling
Central Air Conditioning Installation
Serves O'Fallon, Missouri
(100)
"Reliable is, as promised, reliable. They show up promptly, do the work you need give a fair price, and don't try to sell you services or goods you do not need. I would call them first for every HVAC or plumbing need."
"Reliable is, as promised, reliable. They show up promptly, do the work you need give a fair price, and don't try to sell you services or goods you do not need. I would call them first for every HVAC or plumbing need."
Porch Pro Headshot West County Heating & Cooling Inc
Central Air Conditioning Installation
Serves O'Fallon, Missouri
(91)
West County Htg & Clg is a family owned and locally operated heating and air conditioning company serving the area since 1990. Technicians are factory trained and licensed. Services offered is service of any brand equipment, installation of new heating and cooling systems as well as geothermal syst...Read more about West County Heating & Cooling Inc
West County Htg & Clg is a family owned and locally operated heating and air conditioning company serving the area since 1990. Technicians are factory trained and licensed. Services offered is service of any brand equipment, installation of new heating and cooling systems as well as geothermal syst...Read more about West County Heating & Cooling Inc

Costs to install a split system air conditioner

$3001 - $3562
O'Fallon, MO average
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While $3001 - $3562 represents average costs for O'Fallon, use the cost guide to determine prices near you.
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Frequently asked questions about air conditioning installation companies

In order to keep your home comfortable all year long, it pays to find a reliable air conditioning contractor. Do your research up front in order to get the best HVAC pro to handle your air conditioning installation or repair. Any potential air conditioning pro should provide references for recent and previous work. Pros who haven’t done any recent jobs may not have access to the latest technology and systems. Contractors should provide proof of liability insurance to protect your property, as well as workmen’s compensation insurance. Find out what certifications and licenses are required in your state and get proof that your contractor has them.

If your potential AC contractor checks out, have them come to your home to do a comprehensive on-site evaluation. Bigger isn’t necessarily better when it comes to AC systems. The contractor should recommend installing an AC system that suits the amount of space will service. Expect a detailed written estimate up front. Discuss payment terms, and know how much you’re paying for labor and materials. If you do your homework, you should enjoy a stress-free air conditioning installation, maintenance, or repair.

It may be tempting to try to install an air conditioner on your own. However, AC systems are highly complex. Without proper HVAC training, it would be easy to make a technical error that could be costly down the road. Tiny issues like tight seals and wire placement can make a huge difference if improperly handled, so hiring a properly licensed and insured air conditioning contractor gives you peace of mind. A qualified contractor will be able to offer suggestions about which types and sizes of AC units will be best for your home and needs. They’ll do a detailed on-site inspection to determine which AC system will keep your home comfortable all year round.

Once a pro has successfully installed your new air conditioner, they may offer ongoing maintenance and support. An AC expert can also offer maintenance tips to keep your system humming along smoothly. Even better, should you notice that your unit isn’t operating at its best, your AC pro can make a house call to perform a repair. It’s wise to hire a licensed and insured professional to bring expertise and the right tools for a safe and effective air conditioner installation.

If an air conditioner seems to be running smoothly, it may be tempting to take it for granted, thinking it doesn’t need regular maintenance. In fact, air conditioning experts recommend that homeowners have their AC systems serviced at least once a year. This will ensure maximum efficiency for the warmer months. Air conditioning units build up dirt and dust in places such as the air filters and condensing coils. This build up can reduce the AC unit’s efficiency.

These yearly maintenance visits will carry a fee, but it’s well worth the charge to keep your AC unit operating at its best. As part of a yearly AC service visit, your contractor will check things like the motor, blower, drain line, and connections. Along with the yearly maintenance visit, an air conditioning contractor may make recommendations for a less involved maintenance routine throughout the year. For example, they may recommend that you replace the AC air filter every 30 days. Regardless, regular servicing will keep your AC unit running at its best and help prevent the need for costly repairs in the future.

Homeowners often wonder whether they should have their AC unit repaired, or if it makes more sense to replace the air conditioning system altogether. Whether to repair or replace an air conditioner depends on a number of factors — and a licensed and trained HVAC technician may offer advice on this issue. Start by gathering some facts and determine your air conditioner’s age first. Generally, if a unit is over 10 years old, it’s time for a replacement. This is because older AC units tend to run less efficiently, often having a lower Seasonal Energy Efficiency Ratio (SEER) than newer models. A handy equation to keep in mind is that if the age of the unit multiplied by the cost of a potential repair is over $5000, it’s best to install a replacement.

Frequent repairs are a sign an AC unit is ready to be replaced. If your unit isn’t cooling your home efficiently causing your energy bills to soar, consider replacing the air conditioner. Newer units offer updated technology and features along with higher energy efficiency and may be worth the investment. Be sure to consult a qualified professional to discuss your air conditioner needs.

The cost to replace and install an air conditioner varies according to a number of factors. A qualified air conditioning contractor can come to your home for an on-site inspection, and they should be able to recommend the best AC system for your needs. The cost of the replacement air conditioner will vary according to the square footage it needs to cool, and the size of the air conditioner will make a difference in its price. If you do your research, you’ll learn that various brands of air conditioners offer different prices and deals depending on the season. The unit’s energy efficiency rating will also impact its cost. More efficient systems carry higher price tags, but they’ll likely save you money in the long run.

Along with the price of the replacement air conditioner, you’ll need to factor in the cost of labor. Labor and transportation fees will vary depending on where you live, along with the availability and demand for qualified AC pros in your area. Furthermore, pros my charge more for the services of HVAC technicians with higher levels of expertise and experience. Do your research to get the best air conditioner at a cost that works for you now, as well as in the long run. Cheaper doesn’t necessarily mean better in terms of energy efficiency and cost savings in the future. Consult the free Porch project cost guides to get an idea about how much an air conditioner installation should cost in your area.

Even the best air conditioning units won’t last forever. Generally, if an AC unit is well-maintained and regularly serviced, it should keep working for about 10 years. If 10 years have passed since you had your air conditioner installed, it may start to show signs of failure. For example, it might be working less efficiently, which will cause energy bills to rise. If you notice that your home is accumulating more dust than usual, it’s also wise to take a look at the age of the air conditioner. Keep in mind that an AC unit that fails to keep a home cool enough or is in need of constant repair may be ready for replacement even before it’s 10 years old.

Call in an HVAC expert to help determine whether it’s time to replace your air conditioning unit. They’ll let you know whether your system could benefit from a simple repair, or whether it’s clearly time for a system replacement. Newer air conditioning units tend to be more highly efficient than older ones. Newer systems offer helpful technical advancements, as well. Although it may be daunting to look at the cost of replacing an air conditioner, the investment may pay off over time. Consult an AC pro near you to help you make the decision.

Recent reviews for O'Fallon central air conditioning installation services

11489

Their name says it all! Very reliable, always do a great job, and show up when they say the will. Highly recommend!

- Laura Michel
11601

Highly recommend; not only were they "reliable" & courteous, they also cleaned up! I will have them for all my heating and cooling needs.

- Anna Brandt
12538

Reliable is just that, reliable! Fair pricing and sensible repair/replace recommendations. Dependable after hours service. Clean installs. As an apartment manager, I've had PLENTY of experience with this company and many others in the St. Louis area. ...

- Jesse York
11490

Reliable Heating and Cooling is THE BEST! Their customer service is fantastic and they are so knowledgeable and HONEST with their estimates and service calls. I ONLY call Reliable.

- Allison Dolak
11672

There the best and very honest!

- Ralph Frank
11496

thank you for the honest and fast service... I would highly recommend

- justin hurayt
62908

Can't say enough about the quality, thoroughness, and professionalism of people like Dan B. at Vogel Heating & Cooling. Having worked with Vogel for several years on all of my heating and cooling needs, I can proudly say I have not been disappointed, and...

- Andrewd von Gontard
140037

We have recently had Lk heating out due to a warranty company, it took them three weeks to come to our hom and stated it was our compressor, they then left our house in absolute disarray and could not get our air working. After having another company come...

- Stephanie Michel
40352

Larry went above and beyond my expectations. I'm pleased I have found an HVAC contractor I can trust with many years of experience. I would recommend LK Mechanical!

- Jamie Lynn
39488

Larry has taken care of every problem I have had at my home and my parents home. He is fast reliable and does quality work. Explains everything in detail. Would recomend him to anyone.

- Jacob Coach
38730

L K Mechanical has always treated myself and my family well, he's thorough and explains what he needs to do and why

- mary schreck
191242

The Home Warranty company used sent this company to my parents house. I understand that it can be hard diagnosing a problem, however each service tech told my parents something different. The last tech didn't tell them anything, unplugged their unit fro...

- Nancy Chillers

All Air Conditioning Installation Companies in O'Fallon, MO

Porch Pro Headshot Hampton Heating & Cooling
Central Air Conditioning Installation
Serves O'Fallon, Missouri
(27)
Hampton Heating and Cooling LLC is a family owned business that operates 24 hours a day. We repair and replace any items that pertain to heating, cooling and refrigeration. Repair and replace heating and cooling equipment, from furnaces, evaporators, condensers, washers, dryers and hot water heater...Read more about Hampton Heating & Cooling
Hampton Heating and Cooling LLC is a family owned business that operates 24 hours a day. We repair and replace any items that pertain to heating, cooling and refrigeration. Repair and replace heating and cooling equipment, from furnaces, evaporators, condensers, washers, dryers and hot water heater...Read more about Hampton Heating & Cooling
Porch Pro Headshot All-Star Heating & A/C, Inc.
Central Air Conditioning Installation
Serves O'Fallon, Missouri
(19)
As the seasons change, we here, at All-Star Heating & A/C would like to offer you a friendly reminder that now is the time to have your unit(s) tuned-up by one of our certified technicians. Tune-ups on your HVAC equipment will ensure they are running at full efficiency. Even minor parts such as filt...Read more about All-Star Heating & A/C, Inc.
As the seasons change, we here, at All-Star Heating & A/C would like to offer you a friendly reminder that now is the time to have your unit(s) tuned-up by one of our certified technicians. Tune-ups on your HVAC equipment will ensure they are running at full efficiency. Even minor parts such as filt...Read more about All-Star Heating & A/C, Inc.
Porch Pro Headshot Under Construction
Central Air Conditioning Installation
Serves O'Fallon, Missouri
(22)
Under Construction 🚧 Property management Painting Demo Decks Vinyl / Ceramic tile Small / Large his welcome
Under Construction 🚧 Property management Painting Demo Decks Vinyl / Ceramic tile Small / Large his welcome
Porch Pro Headshot L K Mechanical HEATING AND AIR CONDITIONING
Central Air Conditioning Installation
Serves O'Fallon, Missouri
(5)
"Larry came to install gas logs we purchased from Lowes. He was very respectful of our home. He placed throws on the floor to protect the carpet and catch any debris. He cleaned up completely and thoroughly. Our logs were defective and we had to have Larry back out for a reinstall. I figured th...Read more about L K Mechanical HEATING AND AIR CONDITIONING
"Larry came to install gas logs we purchased from Lowes. He was very respectful of our home. He placed throws on the floor to protect the carpet and catch any debris. He cleaned up completely and thoroughly. Our logs were defective and we had to have Larry back out for a reinstall. I figured th...Read more about L K Mechanical HEATING AND AIR CONDITIONING
Porch Pro Headshot WilCo Services
Central Air Conditioning Installation
Serves O'Fallon, Missouri
Porch Pro Headshot American Society Of Heating And Cooling Specialists
Central Air Conditioning Installation
Serves O'Fallon, Missouri
MY WORK HAS TO BE DONE RIGHT THE FIRST TIME, ( no call back's allowed) THAT'S MY GUARANTEE. BBB A+ Rated.... Service Call/Consultation $56.25 (25% off retail $75) Ameren Missouri Partnered-rebates upon approval Annual Maintenance Service Agreements-Inquire within, Patriot Club $14.99/Monthly (Two a...Read more about American Society Of Heating And Cooling Specialists
MY WORK HAS TO BE DONE RIGHT THE FIRST TIME, ( no call back's allowed) THAT'S MY GUARANTEE. BBB A+ Rated.... Service Call/Consultation $56.25 (25% off retail $75) Ameren Missouri Partnered-rebates upon approval Annual Maintenance Service Agreements-Inquire within, Patriot Club $14.99/Monthly (Two a...Read more about American Society Of Heating And Cooling Specialists
Porch Pro Headshot We Deliver 4 U
Central Air Conditioning Installation
Serves O'Fallon, Missouri
Wedeliver4u is a very small company that we founded in 2014 when we recieved a very large logistical contract with very large shipping company. I am a Union Carpetner with the St.louis district. My backgroind is in all aspects of construction. Drywall acoustical ceilings furniture garage doors ...Read more about We Deliver 4 U
Wedeliver4u is a very small company that we founded in 2014 when we recieved a very large logistical contract with very large shipping company. I am a Union Carpetner with the St.louis district. My backgroind is in all aspects of construction. Drywall acoustical ceilings furniture garage doors ...Read more about We Deliver 4 U
Porch Pro Headshot C&G Heating & Cooling
Central Air Conditioning Installation
Serves O'Fallon, Missouri
C&G Heating and Cooling company does both residential and commercial work. We are a Trane Comfort Specialist that specializes in installing high efficient furnace and air conditioners. Call (314) 645-0535 or (636)-394-2700 for all your service needs. We service all brands and we offer free est...Read more about C&G Heating & Cooling
C&G Heating and Cooling company does both residential and commercial work. We are a Trane Comfort Specialist that specializes in installing high efficient furnace and air conditioners. Call (314) 645-0535 or (636)-394-2700 for all your service needs. We service all brands and we offer free est...Read more about C&G Heating & Cooling
Porch Pro Headshot Cardinal Service and Installation
Central Air Conditioning Installation
Serves O'Fallon, Missouri
An HVAC company with over 25 years of experience! We provide exceptional service day or night for all of your emergency needs! And in addition we do installation and repair of food and appliance equipment! Servicing Warren, St. Charles, Lincoln and St. Louis counties!
An HVAC company with over 25 years of experience! We provide exceptional service day or night for all of your emergency needs! And in addition we do installation and repair of food and appliance equipment! Servicing Warren, St. Charles, Lincoln and St. Louis counties!
Porch Pro Headshot Person Hvac LLC.
Central Air Conditioning Installation
Serves O'Fallon, Missouri
(59)
Porch Pro Headshot Arrow Heating & Cooling
Central Air Conditioning Installation
Serves O'Fallon, Missouri
(8)
Arrow Heating Clg, based out of House Springs, is an HVAC specialist. They provide air conditioning maintenance, water heater installation, HVAC services and more.
Arrow Heating Clg, based out of House Springs, is an HVAC specialist. They provide air conditioning maintenance, water heater installation, HVAC services and more.
Porch Pro Headshot Home Green Home, L.L.C.
Central Air Conditioning Installation
Serves O'Fallon, Missouri
Porch Pro Headshot Rob Works
Central Air Conditioning Installation
Serves O'Fallon, Missouri
Porch Pro Headshot TC Heating and Cooling
Central Air Conditioning Installation
Serves O'Fallon, Missouri