Top 10 HVAC Companies in O'Fallon, MO

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 Budget Air Conditioning, Heating and Plumbing
HVAC Contractors
Serves O'Fallon, Missouri
(3,139)
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 Healthy Home Pest Control and Services
HVAC Contractors
Serves O'Fallon, Missouri
(988)
I chose to work in this industry because Healthy Home Pest Control and Services was founded in 2016 with a small loan, two trucks and 2 employees. Our mission was to operate like a small town company-were reputation is everything. and unwavering focus on customer care. . We started in this industry...Read more about Healthy Home Pest Control and Services
I chose to work in this industry because Healthy Home Pest Control and Services was founded in 2016 with a small loan, two trucks and 2 employees. Our mission was to operate like a small town company-were reputation is everything. and unwavering focus on customer care. . We started in this industry...Read more about Healthy Home Pest Control and Services
Porch Pro Headshot Williams Heating & Cooling, LLC
HVAC Contractors
Serves O'Fallon, Missouri
(83)
"Professionals from start to finish. Responsive to my call and efficient in fixing my air conditioner problems. I always look to give my business to a minority-owned company and was completely satisfied with the top-rate work they performed. "
"Professionals from start to finish. Responsive to my call and efficient in fixing my air conditioner problems. I always look to give my business to a minority-owned company and was completely satisfied with the top-rate work they performed. "
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 Siefert Mechanical
HVAC Contractors
Serves O'Fallon, Missouri
(57)
Siefert Mechanical is a professional HVAC company with years of experience in installation and repairs of heating and cooling systems. Let us show you how our company can help you save money while keeping complete comfort in your home today!
Siefert Mechanical is a professional HVAC company with years of experience in installation and repairs of heating and cooling systems. Let us show you how our company can help you save money while keeping complete comfort in your home today!
Porch Pro Headshot SMART St. Louis
HVAC Contractors
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
HVAC Contractors
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 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.

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
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
298739

They came out and said we had to pay ahead of time. They charged 179.00. They were here for 5 minutes and left. It wasn’t worth that much money. Obviously I have to work harder then they do for my money

- Margaret Ramires
258565

Michelle came the next day to do an inspection and spent over an hour in our home, thoroughly explaining our issue and potential treatment options! She was kind, courteous, and we did not feel ashamed or judged in any way. We were able to schedule the tre...

- Kyli Patterson
264047

Killed all bed bugs on first treatment very happy. Will use again.

- Tim Adams
18128

I have had service through Williams Heating and Cooling LLC over the past 30 plus years. Service is reputable, dependable and professional. I had a system installed in my home just before I sold it, when my home went through the inspections for listings...

- Bethany L Rhodes
18206

They are very professional and the serviceman are very knowledgeable. They are also affordable.

- Delphia Williams
18145

Outstanding, wonderful people to talk to.

- Carlos Madrid

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 AllBright Systems 2 LLC
    HVAC Contractors
    Serves O'Fallon, Missouri
    (13)
    AllBright Systems 2 LLC Bethalto, IL, 62010 (618) 401-1390 AllBright Systems 2 LLC offers professional janitorial services in Bethalto, IL. Do not hesitate to contact us right away! Professional Office Cleaning, Carpet Cleaner, Window Cleaning Service, Commercial Cleaning Expert Rosewood Heights IL...Read more about AllBright Systems 2 LLC
    AllBright Systems 2 LLC Bethalto, IL, 62010 (618) 401-1390 AllBright Systems 2 LLC offers professional janitorial services in Bethalto, IL. Do not hesitate to contact us right away! Professional Office Cleaning, Carpet Cleaner, Window Cleaning Service, Commercial Cleaning Expert Rosewood Heights IL...Read more about AllBright Systems 2 LLC
    Porch Pro Headshot Windows & the Works
    HVAC Contractors
    Serves O'Fallon, Missouri
    Windows & the Works
    Windows & the Works
    Porch Pro Headshot NRG Mechanical LLC
    HVAC Contractors
    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 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 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 Astro Energy Solutions
    HVAC Contractors
    Serves O'Fallon, Missouri
    Astro Heating & Cooling is dedicated to providing the best possible solution for your home or business. You can count on us to provide you with a system and solution that fits your unique needs and since we've installed many systems in this area, we've earned a reputation for doing the job right the...Read more about Astro Energy Solutions
    Astro Heating & Cooling is dedicated to providing the best possible solution for your home or business. You can count on us to provide you with a system and solution that fits your unique needs and since we've installed many systems in this area, we've earned a reputation for doing the job right the...Read more about Astro Energy Solutions
    Porch Pro Headshot Witt Heating Air Conditioning and Plumbing
    HVAC Contractors
    Serves O'Fallon, Missouri
    Get in touch with Witt Heating Air Conditioning and Plumbing if you are searching for an HVAC contractor. They provide first-rate air conditioning maintenance, vent duct cleaning, and furnace maintenance for Saint Charles.
    Get in touch with Witt Heating Air Conditioning and Plumbing if you are searching for an HVAC contractor. They provide first-rate air conditioning maintenance, vent duct cleaning, and furnace maintenance for Saint Charles.
    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 Complete Caire Heating And Cooling
    HVAC Contractors
    Serves O'Fallon, Missouri
    (18)
    Porch Pro Headshot Roofnation LLC
    HVAC Contractors
    Serves O'Fallon, Missouri
    Porch Pro Headshot EMS Hvac
    HVAC Contractors
    Serves O'Fallon, Missouri
    Porch Pro Headshot Dawson Dodd
    HVAC Contractors
    Serves O'Fallon, Missouri
    Porch Pro Headshot Ace Heating & Cooling
    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