Top 10 HVAC Companies in O'Fallon, MO

Porch Pro Headshot Air Comfort Service, Inc.
HVAC Contractors
Serves O'Fallon, Missouri
(4,493)
"Very professional service technicians who always leave me with a sense of being assured that my HVAC units are properly functioning and ready for the season. I would without any hesitation recommend Air Comfort for service and replacement when needed."
"Very professional service technicians who always leave me with a sense of being assured that my HVAC units are properly functioning and ready for the season. I would without any hesitation recommend Air Comfort for service and replacement when needed."
Porch Pro Headshot Chesterfield Service
HVAC Contractors
Serves O'Fallon, Missouri
(3,525)
Chesterfield Service takes pride in providing the highest quality heating & cooling, appliance repair and HVAC work. We have the finest customer service in greater St. Louis and St. Charles Counties, as well as surrounding areas. In fact, we are so committed to offering you the best service that we ...Read more about Chesterfield Service
Chesterfield Service takes pride in providing the highest quality heating & cooling, appliance repair and HVAC work. We have the finest customer service in greater St. Louis and St. Charles Counties, as well as surrounding areas. In fact, we are so committed to offering you the best service that we ...Read more about Chesterfield Service
Porch Pro Headshot Academy Air
HVAC Contractors
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 Vitt Heating And Air Conditioning Co Inc.
HVAC Contractors
Serves O'Fallon, Missouri
(1,169)
From our family to yours! Our company is a second- and third-generation, family-run business. We are all working together with a common goal of happiness and success for ourselves and our family and friends. With this goal in mind, we offer honest opinions regarding service and, if necessary, instal...Read more about Vitt Heating And Air Conditioning Co Inc.
From our family to yours! Our company is a second- and third-generation, family-run business. We are all working together with a common goal of happiness and success for ourselves and our family and friends. With this goal in mind, we offer honest opinions regarding service and, if necessary, instal...Read more about Vitt Heating And Air Conditioning Co Inc.
Porch Pro Headshot NPM HEATING & COOLING LLC
HVAC Contractors
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
HVAC Contractors
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 Rick's Heating & Air Conditioning
HVAC Contractors
Serves O'Fallon, Missouri
(210)
"Ac not cooling as it should late Saturday afternoon. Called 2 other 24 hour ac companies. Waited for return calls. Never got one. Called Rick and he answered and diagnosed problem. He arrived as promised and quickly fix the issue. Very reasonable."
"Ac not cooling as it should late Saturday afternoon. Called 2 other 24 hour ac companies. Waited for return calls. Never got one. Called Rick and he answered and diagnosed problem. He arrived as promised and quickly fix the issue. Very reasonable."
Porch Pro Headshot AnC Heating & Cooling
HVAC Contractors
Serves O'Fallon, Missouri
(284)
"AnC replaced my mother-board on my furnace and cleaned it for it's yearly maintenance check. They get my repeat business as they are honest, trustworthy,professional, experienced and always make sure the customer is happy. I highly recommend them. I happy so very glad and relieved I finally fou...Read more about AnC Heating & Cooling
"AnC replaced my mother-board on my furnace and cleaned it for it's yearly maintenance check. They get my repeat business as they are honest, trustworthy,professional, experienced and always make sure the customer is happy. I highly recommend them. I happy so very glad and relieved I finally fou...Read more about AnC Heating & Cooling
Porch Pro Headshot Reliable Heating & Cooling
HVAC Contractors
Serves O'Fallon, Missouri
(100)
"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. Reliable is the best by far."
"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. Reliable is the best by far."
Porch Pro Headshot Williams Heating & Cooling, LLC
HVAC Contractors
Serves O'Fallon, Missouri
(83)
"Williams Heating & Cooling has been a very reputable company for many years with outstanding professionals from the office to the working personel in the field. Very prompt, clean and friendly workers that will greet you with a smile. But most of all they are very reasonable & fair to the customers...Read more about Williams Heating & Cooling, LLC
"Williams Heating & Cooling has been a very reputable company for many years with outstanding professionals from the office to the working personel in the field. Very prompt, clean and friendly workers that will greet you with a smile. But most of all they are very reasonable & fair to the customers...Read more about Williams Heating & Cooling, LLC

Top questions to ask before hiring an hvac company

What type of insurance do you have? Heating, ventilation and air conditioning (HVAC) professionals work on a variety of mechanical areas of the home. You'll want to ask specific questions regarding professional training and licensing, as well as what types of insurance they have (for example, mold, air pollution or worker's compensation). It's fair to ask for the dollar amounts they are covered and a quality professional will show you verification of coverage.

HVAC professionals attend to a home's thermal needs as well as air quality. Because of the technical aspects of HVAC work, find out the scope of work your professional can perform. You may only need your heating unit serviced however, if this professional also specializes in energy efficiency, mold assessment, or offer ways for you to save on energy costs, you may want to hire them for future projects. Because some equipment is gas-powered, your professional should be able to answer questions about installing gas lines and permitting.

Ask about guarantees on labor or warranties on parts for your HVAC project. It's common to have a time limitation on parts and equipment. Save any paperwork related to your project so you can refer back to instruction manuals or serial numbers.

When working with a heating and cooling professional, ask if their company offers pricing incentives to encourage you to hire them on a regular basis. It's common to have your equipment inspected and serviced at least once a year. Your HVAC company may also offer special pricing on filters, ventilation cleaning or energy assessments.

Regardless of the scope of your project, find out what you need to do to prepare your home for their visit. For example, the HVAC professional will need access to the areas in question and may need access to other mechanical or ventilation points. Make sure pets and children are kept out of the way. Ask if your project will involve removing dry wall or making any other structural changes – you may need to hire a professional drywall contractor to patch up HVAC work. If you are adding a unit that may contribute to carbon monoxide within the home, find out if you need to purchase a carbon monoxide detector.

Recent reviews for O'Fallon HVAC Contractors

46282

This is probably one of the worst companies I have ever dealt with.

- Roger Daily
15470

Very reliable service at a reasonable rate. Service was completed in an efficient manner. First time that I used this company and will definetly use them again.

- Peter Cauchon
15471

Very reliable service at a reasonable rate. Service was completed in an efficient manner. First time that I used this company and will definetly use them again.

- Peter Cauchon
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
11625

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.

- Margaret Wehrenberg
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
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
189547

This is a dependable company with a professional manager in Jeremiah Feinberg. We were very pleased with the costs, timeline and finished project. We will definitely use this company again.

- Jamie Whetstone
64428

Nice job..Its a great feeling to know I don't have to worry about it any more Thanks to Him and Froggys Id recommend these guys! Keep up the good work!!

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

Everything You Need to Know About O'Fallon HVAC Companies

What zip codes in O'Fallon have the best HVAC Contractors?

Below we've listed O'Fallon zip codes that have great selections of hvac contractors:

  • 63341: 3 HVAC Contractors.
  • 63367: 1 HVAC Contractors.
  • 63368: 2 HVAC Contractors.
  • 63385: 1 HVAC Contractors.
  • 63366: 3 HVAC Contractors.
  • How does invoicing/payment work for most HVAC Contractor projects in O'Fallon?

    Every project differs, but you should ask any hvac contractor for an estimate, before they do any work. In fact, ask for their general payment terms before any hvac work is done.

    If the job is large and going to take longer than a day, it's common practice for hvac contractors to request a down payment. Usually, this will be around 25% so they can commence work on your hvac contractor project.

    If it's a quick job, you'll likely be given an invoice/bill when the job is complete. Then it's up to you and the hvac contractor to determine if you pay immediately or can send payment at a later date.

    What should I check for once my HVAC Contractor in O'Fallon has finished working?

    Every hvac project is going to have different results, but here are a few things to check for once any hvac company has told you they've finished the job:

    • Obviously you want to do a visual inspection. Even if you're unfamiliar with hvac work, this gives you the opportunity to ask questions (even basic ones like, what did you do?).
    • Ask the hvac contractor to describe what they did. Whether your hvac project was a repair job or a building job, have them run you through what was done.
    • Compare the description provided on your hvac project estimate to the work completed. Did the professional do what was promised?
    • Request that the hvac contractor do a follow-up visit to check on the work. Most professionals are willing to do this, especially if you ask them.

    All HVAC Companies in O'Fallon, MO

    Porch Pro Headshot Froggy's Heating & Air LLC
    HVAC Contractors
    Serves O'Fallon, Missouri
    (63)
    Froggy's Heating and Air LLC is a heating and air conditioning company based in Arnold, MO. Froggy's services the St Louis Metropolitan area as well as the surrounding areas in St Louis County, Jefferson County, and in Illinois.
    Froggy's Heating and Air LLC is a heating and air conditioning company based in Arnold, MO. Froggy's services the St Louis Metropolitan area as well as the surrounding areas in St Louis County, Jefferson County, and in Illinois.
    Porch Pro Headshot Total Comfort Heating & Air Conditioning LLC
    HVAC Contractors
    Serves O'Fallon, Missouri
    (109)
    Total Comfort Heating & Air Conditioning, LLC is a bonded, licensed and insured contractor with over 30 years of experience in the industry. Our company prides itself with quality workmanship and competitive pricing. Total Comfort Heating & Air Conditioning, LLC strives for excellence in our servic...Read more about Total Comfort Heating & Air Conditioning LLC
    Total Comfort Heating & Air Conditioning, LLC is a bonded, licensed and insured contractor with over 30 years of experience in the industry. Our company prides itself with quality workmanship and competitive pricing. Total Comfort Heating & Air Conditioning, LLC strives for excellence in our servic...Read more about Total Comfort Heating & Air Conditioning LLC
    Porch Pro Headshot West County Heating & Cooling Inc
    HVAC Contractors
    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 All-Star Heating & A/C, Inc.
    HVAC Contractors
    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 Schraer Heating & Air Conditioning
    HVAC Contractors
    Serves O'Fallon, Missouri
    (66)
    Established in 1945, Schraer Heating & Air Conditioning is an HVAC specialist that is based in Warrenton and offers furnace maintenance, water heater inspection and more. In November of 2012, a property owner contracted them to do a kitchen remodel using a permit acquired from Saint Louis County.
    Established in 1945, Schraer Heating & Air Conditioning is an HVAC specialist that is based in Warrenton and offers furnace maintenance, water heater inspection and more. In November of 2012, a property owner contracted them to do a kitchen remodel using a permit acquired from Saint Louis County.
    Porch Pro Headshot JT Dunn Climate Control  LLC.
    HVAC Contractors
    Serves O'Fallon, Missouri
    (1)
    Dunn Heating & Cooling is a full-service residential and commercial heating and air conditioning company committed to providing our customers with the finest professional service, installation, maintenance and indoor air quality at a fair price. From heating and cooling equipment installations, rep...Read more about JT Dunn Climate Control LLC.
    Dunn Heating & Cooling is a full-service residential and commercial heating and air conditioning company committed to providing our customers with the finest professional service, installation, maintenance and indoor air quality at a fair price. From heating and cooling equipment installations, rep...Read more about JT Dunn Climate Control LLC.
    Porch Pro Headshot Crabtree Heating & Cooling LLC
    HVAC Contractors
    Serves O'Fallon, Missouri
    Crabtree Heating and Cooling is a three generation, Family owned and operated business serving St. Louis County, St. Charles County and Lincoln County and its surrounding municipalities for over 20 years. We value and appreciate the trust placed in us by our customers! Whether your project is big o...Read more about Crabtree Heating & Cooling LLC
    Crabtree Heating and Cooling is a three generation, Family owned and operated business serving St. Louis County, St. Charles County and Lincoln County and its surrounding municipalities for over 20 years. We value and appreciate the trust placed in us by our customers! Whether your project is big o...Read more about Crabtree Heating & Cooling LLC
    Porch Pro Headshot Sherlock Home Remodeling Agency, Inc.
    HVAC Contractors
    Serves O'Fallon, Missouri
    Complete residential remodeling with trade professionals in carpentry, hvac, electrical, plumbing, roofing, foundation repair. We are fully bonded and insured for homeowner protection. We also provide home inspections for real estate transaction. We specialize in Bathroom - Kitchen remodeling, ro...Read more about Sherlock Home Remodeling Agency, Inc.
    Complete residential remodeling with trade professionals in carpentry, hvac, electrical, plumbing, roofing, foundation repair. We are fully bonded and insured for homeowner protection. We also provide home inspections for real estate transaction. We specialize in Bathroom - Kitchen remodeling, ro...Read more about Sherlock Home Remodeling Agency, Inc.
    Porch Pro Headshot Fireplace and Grill Center
    HVAC Contractors
    Serves O'Fallon, Missouri
    (36)
    Porch Pro Headshot Astro Heating & Cooling
    HVAC Contractors
    Serves O'Fallon, Missouri
    (32)
    Porch Pro Headshot Roofnation LLC
    HVAC Contractors
    Serves O'Fallon, Missouri
    Porch Pro Headshot American Heating & Cooling
    HVAC Contractors
    Serves O'Fallon, Missouri
    Porch Pro Headshot Ace Heating & Cooling
    HVAC Contractors
    Serves O'Fallon, Missouri
    Porch Pro Headshot Dawson Dodd
    HVAC Contractors
    Serves O'Fallon, Missouri

    Latest projects near O'Fallon

    Recent projects booked on Porch
    Wentzville 63385
    Thermostat Replacement and Repair
    Comments from Customer
    Upgrading to a smart thermostat
    Wentzville 63385
    Thermostat Replacement and Repair
    Lake Saint Louis 63367
    HVAC Inspection
    Start Date
    Within 48 hours
    Purpose
    just a check up on heating an air condition
    Inspection type
    Heating and cooling
    Property type
    Single family residence
    Property size
    1,501-2,000 sq ft
    Property age
    11-20 years
    Foundation type
    Slab on ground
    Relationship to property
    Owner
    Occupied
    Yes
    Utilities turned on
    Yes
    Specific services
    None of the above
    O Fallon 63368
    Thermostat Replacement and Repair
    Comments from Customer
    I would like to get an estimate for an ecobee thermostat install