Top-rated central humidifier installers and replacers.

Get matched with top central humidifier installers and replacers in Alton, IL

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Central humidifier installers and replacers in Alton

Avatar for Jones Air And Water

Jones Air And Water

1730 2nd St.
4.69(
90
)
•Approved Pro

Jones Air And Water

1730 2nd St.
4.69(
90
)
•Approved Pro
Customers say: Quick response
16 local quotes requested
11 years of experience

We are a locally owned and operated company that has been servicing the St Louis Metropolitan area for three decades. Honesty and integrity are our core values. We offer water treatment and purification system services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

"Nice family oriented business. Very helpful in education about water purification systems. A company that wants to do a good job and provide a high level of customer confidence. "

Mike G on September 2025

We are a locally owned and operated company that has been servicing the St Louis Metropolitan area for three decades. Honesty and integrity are our core values. We offer water treatment and purification system services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

"Nice family oriented business. Very helpful in education about water purification systems. A company that wants to do a good job and provide a high level of customer confidence. "

Mike G on September 2025

Avatar for Hoffmann Brothers

Hoffmann Brothers

1025 Hanley Industrial Ct.
4.72(
38
)
•Approved Pro

Hoffmann Brothers

1025 Hanley Industrial Ct.
4.72(
38
)
•Approved Pro
Super Service Award
Customers say: True professional
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
25 years of experience

The Heating and Air Conditioning Contractors at Hoffmann Brothers have provided the greater St. Louis area with reliable and professional services for more than 40 years. When you are in need of heating, ventilation, and air conditioning (HVAC) contractors for any of your heating or air conditioning repair or replacement service needs, call upon us at (314) 664-3011 or contact our team online.

"Good"

Andrew W on August 2024

The Heating and Air Conditioning Contractors at Hoffmann Brothers have provided the greater St. Louis area with reliable and professional services for more than 40 years. When you are in need of heating, ventilation, and air conditioning (HVAC) contractors for any of your heating or air conditioning repair or replacement service needs, call upon us at (314) 664-3011 or contact our team online.

"Good"

Andrew W on August 2024

Avatar for Tiger Plumbing, Heating, Air Conditioning, & Electrical Services

Tiger Plumbing, Heating, Air Conditioning, & Electrical Services

1902 Vandalia Street, Suite 100
3.80(
80
)
•Approved Pro

Tiger Plumbing, Heating, Air Conditioning, & Electrical Services

1902 Vandalia Street, Suite 100
3.80(
80
)
•Approved Pro
Customers say: Quick response
182 local quotes requested
32 years of experience

Tiger Plumbing, Heating, Air Conditioning, & Electrical Services takes pride in being your preferred local plumbers, electricians, and HVAC technicians! In fact, more homeowners in the St. Louis Metro East & Central Illinois communities we serve, say they would call us again before any other plumbing, electrical, heating, or air conditioning service!

"This company is outstanding. I can not sing them enough praises."

Jacqueline W on May 2025

Tiger Plumbing, Heating, Air Conditioning, & Electrical Services takes pride in being your preferred local plumbers, electricians, and HVAC technicians! In fact, more homeowners in the St. Louis Metro East & Central Illinois communities we serve, say they would call us again before any other plumbing, electrical, heating, or air conditioning service!

"This company is outstanding. I can not sing them enough praises."

Jacqueline W on May 2025

Avatar for Garrett Heating & Cooling

Garrett Heating & Cooling

238 Holiday Mobile Home Park
4.50(
12
)
•Approved Pro

Garrett Heating & Cooling

238 Holiday Mobile Home Park
4.50(
12
)
•Approved Pro
Customers say: Super punctual
332 local quotes requested
20 years of experience

In business since 2005, you can rely on us to provide you with comprehensive heating and cooling services. Our locally and family-owned and operated business has over 25 years of experience in the industry.

"Within minutes of posting my information to replace our AC I received a call from Jeff and was scheduled for an estimate the next day. The quote was excellent and he was able to schedule the replacement within a 3 day window which was outstanding considering the heat index was over 100 degrees. He explained everything very thoroughly and got the job done quickly. Definitely recommend."

Donna F on August 2025

In business since 2005, you can rely on us to provide you with comprehensive heating and cooling services. Our locally and family-owned and operated business has over 25 years of experience in the industry.

"Within minutes of posting my information to replace our AC I received a call from Jeff and was scheduled for an estimate the next day. The quote was excellent and he was able to schedule the replacement within a 3 day window which was outstanding considering the heat index was over 100 degrees. He explained everything very thoroughly and got the job done quickly. Definitely recommend."

Donna F on August 2025

Avatar for Mr. Handyman Metro East

Mr. Handyman Metro East

1309 VANDALIA ST
4.64(
188
)
•Approved Pro

Mr. Handyman Metro East

1309 VANDALIA ST
4.64(
188
)
•Approved Pro
Customers say: Super punctual
764 local quotes requested
25 years of experience

One call does it all!! .Mr. Handyman is the largest employer of home repair contractors in U.S. and Canada. For more than 15 years we've consistently hired experienced, reliable employees whose skills are further refined through technical and customer service training. All of our handyman service technicians are licensed and insured for your safety and theirs. That means you'll receive consistently high quality work from safe, reliable, professional handymen. Mr. Handyman's professionals arrive in nationally-recognized uniforms and branded vans that are stocked with every tool they'll need. Our on-time record is second to none, and we arrive ready to work. One phone call to Mr. Handyman hires professionals who complete your entire "To Do" list. Every task whether major or minor home repair is prioritized according to your needs. For all your major and minor home repair needs, call Mr. Handyman today!

"It went fast, clean and great."

Jai A. D on February 2021

One call does it all!! .Mr. Handyman is the largest employer of home repair contractors in U.S. and Canada. For more than 15 years we've consistently hired experienced, reliable employees whose skills are further refined through technical and customer service training. All of our handyman service technicians are licensed and insured for your safety and theirs. That means you'll receive consistently high quality work from safe, reliable, professional handymen. Mr. Handyman's professionals arrive in nationally-recognized uniforms and branded vans that are stocked with every tool they'll need. Our on-time record is second to none, and we arrive ready to work. One phone call to Mr. Handyman hires professionals who complete your entire "To Do" list. Every task whether major or minor home repair is prioritized according to your needs. For all your major and minor home repair needs, call Mr. Handyman today!

"It went fast, clean and great."

Jai A. D on February 2021

Design Tech Contracting

Based Out Of 125 East 3rd Street
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro

Design Tech Contracting

Based Out Of 125 East 3rd Street
New on HomeAdvisorNew on HomeAdvisor
•Approved Pro
355 local quotes requested
21 years of experience

We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today!

We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today!

C Hatcher Construction

Located In:
5.00(
7
)
•Approved Pro

C Hatcher Construction

Located In:
5.00(
7
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
871 local quotes requested

Home repairs, electric, plumbing, remodeling, flooring, masonry, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"Excellent work and communication. . Work done very timely manner. Very reasonable cost. Have several other projects hiring him to do. Highly recommend"

kristi s on March 2024

Home repairs, electric, plumbing, remodeling, flooring, masonry, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"Excellent work and communication. . Work done very timely manner. Very reasonable cost. Have several other projects hiring him to do. Highly recommend"

kristi s on March 2024

Avatar for The Steven Brand

The Steven Brand

3 Renee Drive
4.83(
47
)
•Approved Pro

The Steven Brand

3 Renee Drive
4.83(
47
)
•Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
3236 local quotes requested

We offer a variety of handyman services. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality of work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today!

"Steve was very Professional assembled The tv stand & moved a 65 inch tv from my bedroom to the living room.where the tv stand was. He did an Excellent job Great job will call him again if I need anything else done. Will.also recommend him to any of my friends."

Ernest M on September 2025

We offer a variety of handyman services. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality of work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today!

"Steve was very Professional assembled The tv stand & moved a 65 inch tv from my bedroom to the living room.where the tv stand was. He did an Excellent job Great job will call him again if I need anything else done. Will.also recommend him to any of my friends."

Ernest M on September 2025

MISSOURI VALLEY RENEWABLE ENERGY

2378 BERKEMEYER RD
No reviews yet

MISSOURI VALLEY RENEWABLE ENERGY

2378 BERKEMEYER RD
No reviews yet
23 years of experience

Auto Transport - United Freight Of America

1844 N Nob Hill Rd
4.84(
920
)

Auto Transport - United Freight Of America

1844 N Nob Hill Rd
4.84(
920
)
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

United Freight of America is your all inclusive transport solution. CONTACT US FOR A QUOTE. please include pick up and Drop off locations and vehicle information

"Excellent, no problems. My car was new the first year I used the service and there has never been any damage during the transports. The men picking up and delivering the car have always been pleasant and cooperative. Both Ely and Guy at United Transport has been highly responsive to my needs. I would highly recommend this company."

CLAUDIA H on October 2021

United Freight of America is your all inclusive transport solution. CONTACT US FOR A QUOTE. please include pick up and Drop off locations and vehicle information

"Excellent, no problems. My car was new the first year I used the service and there has never been any damage during the transports. The men picking up and delivering the car have always been pleasant and cooperative. Both Ely and Guy at United Transport has been highly responsive to my needs. I would highly recommend this company."

CLAUDIA H on October 2021

...
Showing 1-10 of 621
FAQs for central humidifier installation and replacement projects in Alton, IL

Aim for indoor humidity between 30% and 50%, with the sweet spot around 45%. That range keeps mold, dust mites, and musty odors in check while protecting drywall and woodwork. Staying in the zone also helps your HVAC system run more efficiently and supports healthier air for you and your family year-round, during hot summers and cold winter months.

With routine filter changes and coil cleanings, most whole-house units run for eight to 15 years. Heavy use, poor air quality, or bargain-bin equipment can shorten that span, while a well-maintained, high-quality model often makes it to the upper end of the range. Ask your installer about recommended service intervals to get the most mileage from your investment.

It depends on your climate. Homes in cold, dry regions can often shut the dehumidifier off once winter sets in. If you live in a warm, humid area—or your house tends to trap moisture—you may need to keep it running year-round. Use a simple hygrometer: if readings stay below 50%, give the unit a rest. Just remember to restart it when humidity climbs again to avoid mold and condensation.

Dry air feels cooler, so your AC doesn’t have to work as hard. By stripping out excess moisture, the dehumidifier lets you raise the thermostat a few degrees without losing comfort. A shorter AC runtime reduces electricity use and can shave a noticeable amount off your summer power bill. Energy-efficient models further enhance those savings.

If your home is under about 2,000 square feet, a well-placed portable unit can handle the load. Just remember they’re less efficient and need hands-on upkeep—think emptying tanks and cleaning filters. If you prefer set-and-forget convenience or plan to expand your living space, a whole-house model still offers better long-term comfort and lower energy use per square foot.

The Alton, IL 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.

See all articles
  • Technician repairing air conditioner
    After Hours Home Improvement, LLC - Author/Reviewer
    •

    HomeAdvisor's Air Conditioning Repair Cost Guide gives the average price to fix an AC unit in your house. Find the cost of recharging the AC or fixing a freon leak. Get the price to repair or replace a compressor, handler, thermostat, duct, and more.

  • An AC system in the backyard of a house

    This guide explores the average cost of replacing your AC compressor and all of the factors that go into it, including size, type, and brand.

  • Detail of a HVAC system outside a brick house

    The cost of replacing an AC unit fan motor depends on warranties, labor, season, and more. This cost guide covers everything you need to know about this HVAC part.