Repair and maintenance it went very well

Get matched with top humidifier repair pros in O Fallon, MO
There are 21 highly-rated local humidifier repair pros.
Need a pro for your humidifier repair project in O Fallon, MO?
TRUSTED BY O FALLON, MO HOMEOWNERS
4.7
Average homeowner rating472
Verified humidifier repair services reviews
Verified Reviews for Humidifier Repair pros in O Fallon, MO
Last update on October 10, 2025
- John H.
- Allison D.
When I first spoke to Leonard (owner) he set an appointment with me for the next day, and even worked me in late due to my own work schedule. Very accommodating. He made sure to get the details of my appliances so that he would have the correct parts with him, which I appreciated. Not only is...
- Pam H.
Had several plumbing issues corrected and a new shut off valve was replaced in the half bath. Several months later the shut off valve connection was leaking which lead to some water damage on the 1/2 bath floor on the main floor. Had put in a service call to have someone come and the...
- William B.
We have been having a problem with our electric dryer leaving brown streaks on the clothes. It's about 20 yrs old and I didn't think we could get parts to have it repaired. I called early Tuesday and was told they were booked full that day, but they could have a repairman by first thing...
- Bob H.
We have used Welsch to maintain our furnace for over 21 years. We recently moved to a new house and was pleased that Welsch installed the furnace. We had them install a humidifier on the furnace and we will continue to use them to maintain the unit. The service tech was professional,...
- Rebecca T.
I would definitely use this service provider again. They were also the only group I could find in the St Louis area that would repair my high-end appliance.
Find Humidifier repair pros in O Fallon

Dunn Plumbing, Heating and Air Conditioning / Dunn One Hour Heating and Air Conditioning
Dunn Plumbing, Heating and Air Conditioning / Dunn One Hour Heating and Air Conditioning
Now offering one hour service for heating and air conditioning service. We are factory authorized to service all major brands and we offer all the top products in the industry. Year to year we win numerous awards for customer service and technical skill. Our team is dedicated to providing you with the attention to detail and customer service that can create a whole new level of comfort and energy savings. Led by owner Brett Nejmanowski, our company provides expert sales, service and installation. We have a team of technicians that are fully qualified to help you select the comfort system that best fits your home and your budget. We serve the greater St Louis area, and are a no-nonsense, everything-on-the -table kind of heating and cooling company. Our written 100% satisfaction guarantee is behind all the work we do – if you’re not happy with our heating and cooling services for any reason, we’ll make it right or give your money back, no questions asked! No matter if it is a furnace or AC repair, furnace and AC installation, heat pump installation, or anything heating and air conditioning-related, you will have our guarantee. Along with the services we provide, we’re also passionate about our duty to protect the environment and our social responsibility to the community. In our daily practices, we utilize earth-friendly products and methods to ensure clean outdoor and safe indoor environments for the people we serve. We regularly give back to the community through volunteer work and financial donations. Among the charitable organizations we support are Safe Kids USA, National Multiple Sclerosis Society, Autism Speaks and the Sheriffs’ Association. Financing options available. Numerous rebate programs available. Government subsidized programs available to qualifying homes. Additional phone number (618) 717-0707 Also servicing clients from both 14248 F Manchester Rd, Ste. 190, Manchester MO, 63011 & 110 West Main St., Ste. A, Belleville IL, 62220!
"Very professional and thorough"
Carla F on May 2025
Now offering one hour service for heating and air conditioning service. We are factory authorized to service all major brands and we offer all the top products in the industry. Year to year we win numerous awards for customer service and technical skill. Our team is dedicated to providing you with the attention to detail and customer service that can create a whole new level of comfort and energy savings. Led by owner Brett Nejmanowski, our company provides expert sales, service and installation. We have a team of technicians that are fully qualified to help you select the comfort system that best fits your home and your budget. We serve the greater St Louis area, and are a no-nonsense, everything-on-the -table kind of heating and cooling company. Our written 100% satisfaction guarantee is behind all the work we do – if you’re not happy with our heating and cooling services for any reason, we’ll make it right or give your money back, no questions asked! No matter if it is a furnace or AC repair, furnace and AC installation, heat pump installation, or anything heating and air conditioning-related, you will have our guarantee. Along with the services we provide, we’re also passionate about our duty to protect the environment and our social responsibility to the community. In our daily practices, we utilize earth-friendly products and methods to ensure clean outdoor and safe indoor environments for the people we serve. We regularly give back to the community through volunteer work and financial donations. Among the charitable organizations we support are Safe Kids USA, National Multiple Sclerosis Society, Autism Speaks and the Sheriffs’ Association. Financing options available. Numerous rebate programs available. Government subsidized programs available to qualifying homes. Additional phone number (618) 717-0707 Also servicing clients from both 14248 F Manchester Rd, Ste. 190, Manchester MO, 63011 & 110 West Main St., Ste. A, Belleville IL, 62220!
"Very professional and thorough"
Carla F on May 2025

Fresh Air Heating & Cooling
Fresh Air Heating & Cooling
Fresh Air has been family owned and operated since 1987. Family members Patrick, Tim, Katie and Kevin work together to maintain a culture of excellent service. Fresh Air employs 24 people equally dedicated to constant improvement and a consistent delivery of services. A happy customer is priority #1. Choose Fresh Air and experience the exceptional service you deserve. Fresh Air is a 10-time Super Service Award recipient!! (2009-2021). Additional contact name - Katie Sinn. Additional e-mail - [email protected]
"Great customer service when I called for service. Expert technician that diagnosed the problem and quickly repaired my AC."
Tim R on April 2024
Fresh Air has been family owned and operated since 1987. Family members Patrick, Tim, Katie and Kevin work together to maintain a culture of excellent service. Fresh Air employs 24 people equally dedicated to constant improvement and a consistent delivery of services. A happy customer is priority #1. Choose Fresh Air and experience the exceptional service you deserve. Fresh Air is a 10-time Super Service Award recipient!! (2009-2021). Additional contact name - Katie Sinn. Additional e-mail - [email protected]
"Great customer service when I called for service. Expert technician that diagnosed the problem and quickly repaired my AC."
Tim R on April 2024

Anton's Plumbing, Heating/Cooling & Energy Experts
Anton's Plumbing, Heating/Cooling & Energy Experts
Anton's has been in business for 43 years and maintains an A+ rating with the BBB. We have the highest Google rating in St. Louis. We offer manufacture rebates, and 0% financing for up to 60 months! We currently employ 72 team members who receive customer service training twice per week. Our service technicians have been professionally trained on our 6 step Anton's service system to ensure our customers receive the same GREAT service at a GREAT price each and every visit!! We provide upfront pricing and don't complete any repairs with out approval. We are the only company in St. Louis to offer lifetime warranty on repairs for our UP plan members!!!! Senior Discount- $10 off a service or $100 off complete new system Emergency Service phone number- 314-499-8400
"Did good work, fixed our loose plumbing quickly"
Griffin M on July 2025
Anton's has been in business for 43 years and maintains an A+ rating with the BBB. We have the highest Google rating in St. Louis. We offer manufacture rebates, and 0% financing for up to 60 months! We currently employ 72 team members who receive customer service training twice per week. Our service technicians have been professionally trained on our 6 step Anton's service system to ensure our customers receive the same GREAT service at a GREAT price each and every visit!! We provide upfront pricing and don't complete any repairs with out approval. We are the only company in St. Louis to offer lifetime warranty on repairs for our UP plan members!!!! Senior Discount- $10 off a service or $100 off complete new system Emergency Service phone number- 314-499-8400
"Did good work, fixed our loose plumbing quickly"
Griffin M on July 2025

Hosack Plumbing Heating & Cooling
Hosack Plumbing Heating & Cooling
With over twenty-five years of experience in the industry, Hosack Plumbing Heating & Cooling is the right team to trust with all of your plumbing and heating and cooling needs. Our professional St. Louis technicians are highly skilled, extensively trained, extremely knowledgeable, and expertly proficient. We specialize in commercial and residential plumbing as well as residential heating and cooling. Our technicians will do everything possible to ensure that you have the most reliable and efficient plumbing and hvac systems possible.
"Dan and Bill were great to work with and did excellent work. They were fast, professional and friendly"
Clare S on November 2024
With over twenty-five years of experience in the industry, Hosack Plumbing Heating & Cooling is the right team to trust with all of your plumbing and heating and cooling needs. Our professional St. Louis technicians are highly skilled, extensively trained, extremely knowledgeable, and expertly proficient. We specialize in commercial and residential plumbing as well as residential heating and cooling. Our technicians will do everything possible to ensure that you have the most reliable and efficient plumbing and hvac systems possible.
"Dan and Bill were great to work with and did excellent work. They were fast, professional and friendly"
Clare S on November 2024

Liberty Heating & Cooling
Liberty Heating & Cooling
We pride our business on excellent workmanship done by our top notch employees who are the best in the industry. Our prices are hard to beat especially for the quality you will receive every time you choose us. We also specialize in having excellent customer service and do not believe in being pushy at all with our customers. Our reviews will testify to these statements about our business ethics. Our technicians have been specially trained to handle the sophisticated high-efficiency systems currently on the market today. These include all air conditioners, heat pump, furnaces, boilers and tankless water heaters.
"Very impressed on how Prompt and professional these guys are. Highly recommend."
Alejandro M on October 2025
We pride our business on excellent workmanship done by our top notch employees who are the best in the industry. Our prices are hard to beat especially for the quality you will receive every time you choose us. We also specialize in having excellent customer service and do not believe in being pushy at all with our customers. Our reviews will testify to these statements about our business ethics. Our technicians have been specially trained to handle the sophisticated high-efficiency systems currently on the market today. These include all air conditioners, heat pump, furnaces, boilers and tankless water heaters.
"Very impressed on how Prompt and professional these guys are. Highly recommend."
Alejandro M on October 2025
Pace Appliance Repair
Pace Appliance Repair
Aloha! We are in busy season... . We are still in full swing - due to busy season please reach out to our office directly 314-708-6580 call/text or go to our website submit web inquiry due to high call volumes. We thank you in advance and look forward to getting you serviced ASAP - WE DO NOT SERVICE DISHWASHERS***** INSTALLS ONLY We service most residential brands for refrigerators, ovens, washers/dryers and garbage disposals. $95 service call fee for local area zips/$125 extended. Service call fee applies towards your repair. Side note 2 techs may be needed for some cases to include stack units or DBL wall oven service. We no longer service dishwashers however we do install them $150 w/hoses. Warranty authorized Speed Queen, Marvel/U-line https://pace-appliancerepair.com or google Pace Appliance repair St. Charles, MO- At P.A.C.E. Appliance Repair, we strive to provide the highest level of service to our customers and ensure that our technicians go above and beyond when repairing your appliances. Not only do we offer affordable and competitive pricing, we also service a wide range of appliance brands, types, and models. We are your Professional Appliance Care Experts and your satisfaction is our guarantee! Thank you for reaching out and we look forward to getting your appliance serviced as soon as possible. Please call, text, email or submit web inquiry to our website whichever is easier. P.A.C.E. Appliance Repair team 🧰
"awesome service, due to cost pf repair and age of appliance it was more cost effective to replace my equipment. they did recommend a retailer which i did purchase from."
Ian H on August 2025
Aloha! We are in busy season... . We are still in full swing - due to busy season please reach out to our office directly 314-708-6580 call/text or go to our website submit web inquiry due to high call volumes. We thank you in advance and look forward to getting you serviced ASAP - WE DO NOT SERVICE DISHWASHERS***** INSTALLS ONLY We service most residential brands for refrigerators, ovens, washers/dryers and garbage disposals. $95 service call fee for local area zips/$125 extended. Service call fee applies towards your repair. Side note 2 techs may be needed for some cases to include stack units or DBL wall oven service. We no longer service dishwashers however we do install them $150 w/hoses. Warranty authorized Speed Queen, Marvel/U-line https://pace-appliancerepair.com or google Pace Appliance repair St. Charles, MO- At P.A.C.E. Appliance Repair, we strive to provide the highest level of service to our customers and ensure that our technicians go above and beyond when repairing your appliances. Not only do we offer affordable and competitive pricing, we also service a wide range of appliance brands, types, and models. We are your Professional Appliance Care Experts and your satisfaction is our guarantee! Thank you for reaching out and we look forward to getting your appliance serviced as soon as possible. Please call, text, email or submit web inquiry to our website whichever is easier. P.A.C.E. Appliance Repair team 🧰
"awesome service, due to cost pf repair and age of appliance it was more cost effective to replace my equipment. they did recommend a retailer which i did purchase from."
Ian H on August 2025

All American Appliance Services LLC
All American Appliance Services LLC
All American Appliance Service Inc. has been serving the Greater St Louis area for over 45 years. We pride ourselves on quality work at a fair price. We work on most makes and models of appliances. Our service technicians are trained and qualified to do the job right. We offer fast response and reliable service. Have a question about your appliance? Give us a call today to schedule an appointment.
"Went well and was a quick fix regarding the model we had an issue with."
Joshua V on December 2024
All American Appliance Service Inc. has been serving the Greater St Louis area for over 45 years. We pride ourselves on quality work at a fair price. We work on most makes and models of appliances. Our service technicians are trained and qualified to do the job right. We offer fast response and reliable service. Have a question about your appliance? Give us a call today to schedule an appointment.
"Went well and was a quick fix regarding the model we had an issue with."
Joshua V on December 2024

Neli Virtual Appliance Repair
Neli Virtual Appliance Repair
NEW! Appliance Consultation – Just $35 Get expert advice before you spend on repairs or replacements. A Neli technician will evaluate your issue and help you decide if your appliance can be fixed—or if it’s time for a new one. Virtual Appliance Diagnosis and Repair - Just $45 Service Description: Diagnose or repair your appliance virtually—no need for anyone to enter your home. Neli’s certified technicians guide you step-by-step via secure video chat. How It Works: Book online at nelihome.com or call 833-876-0900 Connect with a tech through our video platform Diagnose or fix the issue in real time Get expert advice and confidence in your next steps What’s Included: Real-time video guidance from a certified technician Diagnosis of the issue OR full repair (when possible) Step-by-step guidance using your smartphone or tablet Safe, contact-free service - no one in your home Flexible scheduling—appointments available daily Perfect For: Appliance fixes HVAC troubleshooting DIY-savvy homeowners Saving time and money on service calls
"Great! Punctual easy to work with cleaned up area when done"
Kay J on September 2025
NEW! Appliance Consultation – Just $35 Get expert advice before you spend on repairs or replacements. A Neli technician will evaluate your issue and help you decide if your appliance can be fixed—or if it’s time for a new one. Virtual Appliance Diagnosis and Repair - Just $45 Service Description: Diagnose or repair your appliance virtually—no need for anyone to enter your home. Neli’s certified technicians guide you step-by-step via secure video chat. How It Works: Book online at nelihome.com or call 833-876-0900 Connect with a tech through our video platform Diagnose or fix the issue in real time Get expert advice and confidence in your next steps What’s Included: Real-time video guidance from a certified technician Diagnosis of the issue OR full repair (when possible) Step-by-step guidance using your smartphone or tablet Safe, contact-free service - no one in your home Flexible scheduling—appointments available daily Perfect For: Appliance fixes HVAC troubleshooting DIY-savvy homeowners Saving time and money on service calls
"Great! Punctual easy to work with cleaned up area when done"
Kay J on September 2025

Schraer Heating and Air Conditioning
Schraer Heating and Air Conditioning
Trusted since 1946, Schraer Air Experts offers top-notch heating, cooling, air quality and hot water services in Warren, Montgomery, St Charles and Lincoln County MO.
Trusted since 1946, Schraer Air Experts offers top-notch heating, cooling, air quality and hot water services in Warren, Montgomery, St Charles and Lincoln County MO.
American Airtemp LLC
American Airtemp LLC
American Airtemp LLC 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.
American Airtemp LLC 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.
FAQs for humidifier repair projects in O Fallon, MO
If your refrigerator needs to be repaired, contact an appliance repair company to diagnose the issue and repair your refrigerator. It’s okay to leave it plugged in and running, but unplug it if it makes unusual noises.
Signs that your refrigerator may need repairs include:
Food items are not being held at the correct temperature (between 35 and 38 degrees Fahrenheit)
The fridge is using too much energy and seems to run all the time
Loud and/or unusual noises
Possible causes include:
A damaged door
Faulty condenser coil
Malfunctioning control board
Contacting an appliance repair professional as soon as possible can help save items in your fridge from spoiling. Common fridge repairs include the compressor, control board, thermostat, defrost motor, coils, and ice maker.
The average cost to hire an HVAC contractor is between $50 and $150 per hour if charging hourly. However, some HVAC contractors will charge a flat fee by the type of service they are performing—for example, an inspection can cost between $150 to $500. Keep in mind that emergency repairs—which are made after business hours or around major holidays—generally cost more than scheduled repairs.
Yes, most states require HVAC technicians to be certified, and for good reason. Hiring an unlicensed HVAC technician could lead to poor quality work, costly future expenses, and potential code violations.
As you browse our pro listings, take note of the “Angi Approved” badge. Angi Approved businesses meet our standards for certification which include:
The owner, principal, or relevant manager passed a criminal background check
Required to have applicable state and local licenses
Maintain an average star rating of 3.0 or better on our network, if they have at least one review
Paying to advertise their services
Meeting any other eligibility criteria required by Angi
Keep in mind licensing is different from certifications. A license is a legal requirement to operate a business, while certifications are voluntary.
The average cost to repair an appliance depends on the appliance, make, model, the part that needs repair, and how long it takes to replace or repair a part. The following are the average repair costs for the most common appliances:
Refrigerator: $200–$300
Freezer: $90–$500
Oven, cooktop, range: $100–$500
Microwave: $50–$400
Dishwasher: $160–$300
Garbage disposal: $70–$250
Washing machine: $50–$450
Dryer: $100–$400
Appliance repair contractors may charge $40 to $120 per hour for labor, and most also provide the replacement parts necessary at an additional cost. It’s also important to note that these prices can go up on holidays and emergency fees may apply if you need your appliance fixed immediately.
The average cost of HVAC repairs is around $350. However, that price can be as low as $100 or as high as $2,000 or more, depending on the repair. For example, replacing a capacitor is a relatively inexpensive repair, ranging from $100 to $500. However, a compressor repair is a more expensive repair, ranging from $750 to $2,000.
The O Fallon, MO homeowners’ guide to humidifier repair services
From average costs to expert advice, get all the answers you need to get your job done.
HVAC replacement costs depend on a lot of factors, like unit type, size, and labor. See what you can expect to pay for HVAC replacement here.
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The pros and cons of fiberglass air filters reveal whether this wallet-friendly option can clean the air enough for you to breathe easily.
Wondering 'what tonnage of AC do I need?' Read our guide to learn about AC tonnage, finding the right tonnage for your home's cooling system, calculating the square footage of your home, and who to hire to calculate AC tonnage for you.
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