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Top-Rated Central humidifier installers and replacers in Lake Saint Louis - Updated Nov 2026

Avatar for Fresh Air Heating & Cooling
Fresh Air Heating & Cooling
4.8(
277
)
Central Humidifier - Install or Replace

Serving Lake Saint Louis, MO and surrounding areas

Approved

In business since 1947

Free estimates

Emergency services offered

"Great Experience. I was concerned about the 22 yr age of our air conditioner able to keep working and wonder if a long wait time to get a product shipped like refrigerators last year, I called for a quote and within a week it was installed and working! Installers worked tirelessly until their work was done, clean and neat!"
Fresh Air Van
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+2

14 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Dunn Heating Air Conditioning and Plumbing
Dunn Heating Air Conditioning and Plumbing
4.7(
274
)
Central Humidifier - Install or Replace

Serving Lake Saint Louis, MO and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"Very impressed with the professional appearance and demeanor of the installers. They initiated a series of pre install checks around the home that solved some issues and found a few problems that needed to be solved before they started. On top of going the extra mile, the install was successful and I'm a very satisfied customer. The manager was responsive and accommodating. Highly recommend Dunn One Hour Plumbing, Heating and Air Conditioning."
Additional Photos
Response time2 days
15 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Liberty Heating & Cooling
Liberty Heating & Cooling
4.8(
46
)
Central Humidifier - Install or Replace

Serving Lake Saint Louis, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Emergency services offered

Warranties offered

"Sam was great. Had a extremely dirty system that would not function correctly or blow cold air. Had High Ridge Heating and Cooling here as he has done work before for me and parents. He took one look and stated we needed to replace entire a/c furnace unit for $3100. Told us it would cost about the same to clean. No way I could afford that so went on Angie's List to find someone and read Sam's review's. He came out and told me the cost at $425 to clean. Which was fantastic. He spent about 2 1/2 to 3 hours and did a wonderful job. Ended up paying total $625 once he was done and asked me before doing anything additional that would cost more. Also since our unit didn't have valves on system to reuse our refrigerant he had to put new in which was part of price increase. Sam, thanks so mich for not trying to take advantage."
A/C replacement
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+10

6 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Aire Serv of St. Louis
Aire Serv of St. Louis
5.0(
5
)
Central Humidifier - Install or Replace

Serving Lake Saint Louis, MO and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

Looking for reliable HVAC service in St. Louis? Aire Serv of St. Louis is your local expert for residential and commercial heating and cooling. From emergency AC repair during humid Missouri summers to furnace maintenance before the winter chill, our professional technicians are available to keep your home comfortable. We pride ourselves on transparent, upfront pricing, no overtime charges, and the "Done Right Promise." Whether you need a system replacement, duct cleaning, or a routine tune-up in Fenton, Webster Groves, or Kirkwood, we are the team you can trust. Breathe easy with Aire Serv—your comfort is our top priority. Call us today to schedule your service!

Logo
29 neighbors recently requested a quote
Avatar for Show-Me Comfort LLC
Show-Me Comfort LLC
5.0(
5
)
Central Humidifier - Install or Replace

Serving Lake Saint Louis, MO and surrounding areas

Approved

Hello, My Name is Johnathan Steele, Owner Operator of Show-Me Comfort Heating and Air Conditioning. I started my company with the intent to help and show transparency to my customers and to educate them to the best of my abilities on the system that keeps their Home Comfortable. Most Companies will come in to a house fix the issue then leave… That’s where we try and separate ourselves by finding the culprit, educating our customers on why it happened and how to prevent future problems. \n\nWe at Show-Me Comfort Heating and Air Conditioning take pride in our work, and if we wouldn’t do it in our house we wouldn’t do it to yours.

14 neighbors recently requested a quote
Jerry Kelly Heating, Air Conditioning, Plumbing & Electrical - H
New to Angi
Central Humidifier - Install or Replace

Serving Lake Saint Louis, MO and surrounding areas

Approved

In business since 1977

Free estimates

Warranties offered

Since 1977, Jerry Kelly Heating, Air Conditioning, Plumbing & Electrical has helped homeowners in St. Charles and St. Louis Counties keep their homes comfortable, safe, and running smoothly. From repairs and maintenance to new installations, our team is committed to quality workmanship, dependable service, and customer satisfaction.

Avatar for ARCO Heating & Cooling
ARCO Heating & Cooling
New to Angi
Central Humidifier - Install or Replace

Serving Lake Saint Louis, MO and surrounding areas

Approved

In business since 1963

Free estimates

Warranties offered

For more than 60 years, ARCO Heating & Cooling has been the local HVAC company that residents and businesses turn to for their heating and cooling needs. What began as a small business has grown into a cornerstone of the St. Charles, St. Louis, & Illinois communities, providing dependable service designed to keep our neighbors comfortable year-round. As a family-owned, local HVAC company, we’re more than just a service provider—we’re part of the community. We live and work right here in the St. Charles, St. Louis, & Illinois Metro areas, so we understand the unique climate challenges our neighbors face. This local connection fuels our dedication to providing personalized service and dependable solutions that make life easier for our customers.

AC Data Plate
AC Wiring
AC Wiring 2
AC Voltage Readings
TitleAC Wiring 3

+20

Response time8 hrs
Avatar for Anton's Plumbing, Heating/Cooling & Energy Experts
Anton's Plumbing, Heating/Cooling & Energy Experts
4.7(
516
)
Central Humidifier - Install or Replace

Serving Lake Saint Louis, MO and surrounding areas

In business since 1979

Free estimates

Emergency services offered

"Fantastic job installing my new water heater. The employees at Anton’s are efficient, professional and really likable people. They arrived on time and got the job done effortlessly. I also loved how they treated my home like it was their own by making sure nothing was damaged or ruined. They cleaned up everything and it didn’t even look like they had been here. I give Anton’s an A+ for the installation of my water heater."
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+18

Response time12 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for Vitt Heating & Air Conditioning Co Inc
Vitt Heating & Air Conditioning Co Inc
4.7(
161
)
Central Humidifier - Install or Replace

Serving Lake Saint Louis, MO and surrounding areas

In business since 1954

Free estimates

Emergency services offered

"Very well. The technician came on time and replaced the faulty element in 1 hour. The problem is the price he charged me for this element - $233.00. Online the price is $23-30.0. I had to pay a premium price for this element though. That makes me very unhappy."
Military Discounts (retired & active)
Senior Citizen Discounts
Residential HVAC
Multifamily & Commercial Installation & Maintenance
Professionally Installed Ducts

+6

Response time3 days
Response rate100%
Recommended by91%of homeowners
Avatar for Air Duct Doctors
Air Duct Doctors
4.7(
781
)
Central Humidifier - Install or Replace

Serving Lake Saint Louis, MO and surrounding areas

In business since 1999

Free estimates

Emergency services offered

"Fantastic!! We had never had our ducts cleaned or sanitized. To my knowledge it was the first time ever and our house is 24yrs old. I can breathe again and the dust that is normally there 3 days after cleaning is gone. Nothing like before! The man explained all of my options clearly and did an amazing job. It was alot of work since we had just about everything done except the dryer vent because it is brand new. Kevin was on his own for the day as his helper was sick and he still had a good attitude and did a spectacular job. Didn't leave a mess either and cleaned up great before he was finished!"
Before Vent Cleaning
After Vent Cleaning
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Recommended by92%of homeowners
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FAQs for central humidifier installation and replacement projects in Lake Saint Louis, MO

A crawl space dehumidifier is a worthwhile investment, particularly in humid climates or if you've noticed musty odors, mold growth, or wood deterioration. Though costs range from $3,000 to $9,200, this investment helps prevent structural damage that could require far more expensive repairs later. Beyond structural protection, a properly dehumidified crawl space contributes to better overall indoor air quality and may reduce allergens throughout your home. Consider having a professional assessment to determine if your specific situation warrants this investment.

Addressing crawl space moisture effectively often requires a combination of solutions. A complete approach includes encapsulation plus dehumidifier installation. For minor moisture issues, a basic dehumidifier starting at $1,500 may suffice, while severe problems in larger spaces could require systems costing up to $14,000. The most effective moisture control strategy depends on your specific conditions, making a professional assessment valuable for determining the most cost-effective approach for your situation.

For a crawl space measuring 1,500 square feet, you'll need a dehumidifier with a daily capacity of 30 to 50 pints, with unit costs ranging from $150 to $600. Your local climate and existing moisture levels may necessitate adjusting this capacity—homes in particularly humid regions might benefit from higher-capacity units. Professional installers can measure your specific humidity conditions and recommend equipment that is appropriately sized, balancing initial cost with operating efficiency for your unique situation.

Crawl space dehumidifiers add $300 to $500 to your annual electricity expenses when operating continuously. Energy-efficient models reduce this consumption by roughly 15 to 30% compared to standard units. Most contemporary dehumidifiers feature humidity sensors that automatically cycle operation based on current conditions, helping manage energy usage. Proper crawl space encapsulation significantly improves efficiency by creating a controlled environment that requires less dehumidifier runtime, thereby reducing ongoing electricity costs.

The Lake Saint Louis, MO homeowners’ guide to central humidifier installations and replacements

From average costs to expert advice, get all the answers you need to get your job done.