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

Porch Pro Headshot Academy Air
Central Air Conditioning Installation
Serves O'Fallon, Missouri
(2,959)
Academy Air Heating and Air Conditioning is a full service company in St. Louis MO specializing in both residential and commercial operations. Academy Air is proudly family owned and operated and has been in business for over 40 years. All technicians are fully certified; factory trained and must pa...Read more about Academy Air
Academy Air Heating and Air Conditioning is a full service company in St. Louis MO specializing in both residential and commercial operations. Academy Air is proudly family owned and operated and has been in business for over 40 years. All technicians are fully certified; factory trained and must pa...Read more about Academy Air
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 Slyman Bros Appliances
Central Air Conditioning Installation
Serves O'Fallon, Missouri
Our NEWEST location is OPEN . . . Come see what everyone in St. Charles is talking about and ask Jake about our special in Store Pricing Slyman Brothers is in St. Charles county - 52 Crossroads Plaza on Highway K in O'Fallon, Missouri, 63368 . . . NOW OPEN . . . Stop on By Our Biggest "BLOW OUT SALE...Read more about Slyman Bros Appliances
Our NEWEST location is OPEN . . . Come see what everyone in St. Charles is talking about and ask Jake about our special in Store Pricing Slyman Brothers is in St. Charles county - 52 Crossroads Plaza on Highway K in O'Fallon, Missouri, 63368 . . . NOW OPEN . . . Stop on By Our Biggest "BLOW OUT SALE...Read more about Slyman Bros Appliances
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 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
Porch Pro Headshot SMART St. Louis
Central Air Conditioning Installation
Serves O'Fallon, Missouri
(15)
SMART is a network of residential air conditioning & heating contractors that provide superior service to the St. Louis metro area. SMART Contractors provide maintenance, repair, replacement and design of residential HVAC units. Our focus is to help consumers reduce their overall heating and coolin...Read more about SMART St. Louis
SMART is a network of residential air conditioning & heating contractors that provide superior service to the St. Louis metro area. SMART Contractors provide maintenance, repair, replacement and design of residential HVAC units. Our focus is to help consumers reduce their overall heating and coolin...Read more about SMART St. Louis
Porch Pro Headshot High Ridge Heating & Cooling
Central Air Conditioning Installation
Serves O'Fallon, Missouri
Is your AC or heating unit on its last leg? Do you need HVAC services before the seasons change? Rely on the experts at High Ridge Heating & Cooling for all of your heating and cooling needs. We offer complete HVAC service and installation for both residential and commercial properties. Our HVAC ser...Read more about High Ridge Heating & Cooling
Is your AC or heating unit on its last leg? Do you need HVAC services before the seasons change? Rely on the experts at High Ridge Heating & Cooling for all of your heating and cooling needs. We offer complete HVAC service and installation for both residential and commercial properties. Our HVAC ser...Read more about High Ridge Heating & Cooling
Porch Pro Headshot L K Mechanical HEATING AND AIR CONDITIONING
Central Air Conditioning Installation
Serves O'Fallon, Missouri
(5)
"LK Mechanical services the hvac system at my home and business properties. They are prompt, courteous and honest. Larry does a wonderful job explaining any issues and how to remedy them. I would highly recommend them. "
"LK Mechanical services the hvac system at my home and business properties. They are prompt, courteous and honest. Larry does a wonderful job explaining any issues and how to remedy them. I would highly recommend them. "

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

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
42567

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 L...

- Robin Thomas
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
389407

I would never refer anyone to LK Mechanical or whatever 5 other company names Larry Meier has used in the past. Initially, my home warranty sent his company out due to a heating issue. They seemed to be a good company. About a year later, I had an A/C iss...

- Acenna Dabbs
69443

Great experience. Michael found the issue quickly and got me going. He also did some stuff to prevent any future problems. Glad they responded and thankful it was so quickly!!

- John Layton
70961

Fast dependable service people were here and finish the job very fast units working way better than before

- Darrin Jones

All Air Conditioning Installation Companies in O'Fallon, MO

Porch Pro Headshot NRG Mechanical LLC
Central Air Conditioning Installation
Serves O'Fallon, Missouri
NRG Mechanical is an HVAC contractor founded in 2001 that provides Saint Charles with water heater installation and gas pipe installation as well as other services. They are accredited by the Better Business Bureau.
NRG Mechanical is an HVAC contractor founded in 2001 that provides Saint Charles with water heater installation and gas pipe installation as well as other services. They are accredited by the Better Business Bureau.
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 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 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 Da Veer Electrical & Mechaical Contracting, Inc
Central Air Conditioning Installation
Serves O'Fallon, Missouri
I have 35 years of experience in home construction as an electrical and mechanical contractor I am fully licensed and bonded
I have 35 years of experience in home construction as an electrical and mechanical contractor I am fully licensed and bonded
Porch Pro Headshot Fireplace and Grill Center
Central Air Conditioning Installation
Serves O'Fallon, Missouri
(36)
Porch Pro Headshot The English Property Maintenance Company, LLC
Central Air Conditioning Installation
Serves O'Fallon, Missouri
The English Property Maintenance Co LLC was created over 20 years ago to deliver the kind of service you want, and should expect from any professional service company and contractor. We will simply never do work that does not need doing! Our extremely competitive daily rates are up to $137 pe...Read more about The English Property Maintenance Company, LLC
The English Property Maintenance Co LLC was created over 20 years ago to deliver the kind of service you want, and should expect from any professional service company and contractor. We will simply never do work that does not need doing! Our extremely competitive daily rates are up to $137 pe...Read more about The English Property Maintenance Company, LLC
Porch Pro Headshot Reborn Builders
Central Air Conditioning Installation
Serves O'Fallon, Missouri
I'm a minister. I do not want to be rich I just want to pay my bills. I am a custom home builder by trade. My labor cost is a third of the national average. I can pull permits if needed. And there is basically nothing I can't do for your home and you.
I'm a minister. I do not want to be rich I just want to pay my bills. I am a custom home builder by trade. My labor cost is a third of the national average. I can pull permits if needed. And there is basically nothing I can't do for your home and you.
Porch Pro Headshot Grand Oaks Heating & Cooling Inc
Central Air Conditioning Installation
Serves O'Fallon, Missouri
Porch Pro Headshot New Systems Heating and Cooling
Central Air Conditioning Installation
Serves O'Fallon, Missouri
Porch Pro Headshot Mike's Moonlighting Service
Central Air Conditioning Installation
Serves O'Fallon, Missouri
Porch Pro Headshot Dawson Dodd
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