24/7 Emergency Service
Give Us a call  608-837-3638

Whole-Home Dehumidifiers in Madison, WI

Crawl space dehumidifierHeat and humidity can make your home an uncomfortable place to rest and relax. At Action Plumbing, Heating, A/C, and Electric, our HVAC team can help you reign in the humidity so you can relax in comfort.

Our dehumidifier installation, maintenance, and repair services will help you maintain the humidity within your home at just the right level.

We offer a broad range of top-quality brands and will help you select the best-suited whole-house dehumidifiers for your needs.

When you need whole-home dehumidifier service in Madison or Fitchburg, call us or reach out online to schedule a service appointment today.

Four Signs You Need a Dehumidifier

Too much humidity in your home can manifest itself in many ways. If you detect any of the following, a dehumidifier can help resolve the issue and improve your indoor air quality.

  • Moldy/musty odors: Excess humidity in the home can facilitate mold/mildew growth. This can occur anywhere in the home but is most common in bathrooms, laundry rooms, and basements.
  • Rotting wood and/or damaged furniture: Excessive humidity can damage wood railings, trim, etc., as well as fabrics, including couches, curtains, etc.
  • Condensation buildup: Too much indoor humidity can cause condensation to form on windows, counters, walls, etc.
  • Allergies and breathing problems: High indoor humidity levels can trigger some allergy symptoms and breathing conditions, including asthma and COPD.

Whole-Home Dehumidifier Installation & Replacement

The annual relative humidity in Madison is around 60%, with winter rising as high as 70-80%. The typical range for comfort is between 30% and 50%, so we recommend whole-house dehumidifier installation for all Madison-area homes.

Our licensed and insured HVAC technicians can help you select and install the optimal system for your home’s size and desired comfort. Our calculations include the size of the home, the number of people living there, the number of windows/doors, and other factors.

Our team typically takes about a day to determine the optimal installation location, complete the installation, and test the system. In most cases, we will install the whole-home dehumidifier within the main return duct and near your air handler.

Depending on the quality of the dehumidifier, indoor air quality, frequency of use, and adherence to maintenance schedules, the typical lifespan of a whole-home dehumidifier can range from 8 to 15 years.

Need Help?

Whole-House Dehumidifier Repair

Our expert HVAC technicians can perform a full range of whole-house dehumidifier repairs. We maintain an inventory of top-quality replacement components and will promptly diagnose and repair the malfunction.

We can resolve common issues such as failure to respond to commands, short-cycling, leaks, and odd noises/odors. We can also resolve problems with clogged drain lines, failure to achieve set humidity levels, frozen coils, and more.

Why Choose Us?

Since 1989, Action Plumbing, Heating, A/C and Electric has proudly served homeowners in Madison and surrounding areas. When you choose our family-owned company for your heating and cooling needs, you will always receive upfront pricing, reliable workmanship, 24/7 emergency service, and our 100% customer satisfaction guarantee.

When you want superior comfort in Madison or Middleton, call our team or reach out online.


Can dehumidifiers help prevent mold?

The right dehumidifier can help protect your home against mold proliferation by maintaining optimal humidity. For most homes, this means maintaining relative humidity levels between 30-60%.

Will a dehumidifier make colds worse?

Dehumidifiers remove excess humidity and reduce allergens in the air. They can help protect against nasal irritation and infection. However, in cases such as pneumonia, removing too much humidity can exacerbate the symptoms you experience.

How do you maintain a whole-home dehumidifier?

Maintenance is simple for most whole-home dehumidifiers and entails cleaning/replacing the air filter, clearing and cleaning the condensate drain line, and cleaning the water collection reservoir.

Our Promotions

Any Furnace Or AC Install $500 OFF
Expires 05/31/24
Any Service over $200 $25 OFF
Expires 05/31/24
Select Whole Home Generators $1000 off
Expires 05/31/24
On A High Efficiency Furnace & A/C Systems Up To $1,850 OFF
Expires 05/31/24
Tankless Water Heater Same Day Install* $100 Off
Expires 05/31/24
Water Heater Same Day Install* $50 Off
Expires 05/31/24
Water Softener Same Day Install* $50 Off
Expires 05/31/24
0% Financing or Payments as low as $77/month Financing Offer
Expires 05/31/24
By-pass Humidifier With New Furnace Install FREE
Expires 05/31/24
Maintenance Package $289
Expires 05/31/24
What To Expect

Discover the Difference

100% Customer Satisfaction
100% Customer Satisfaction

We're in the business of keeping our customers satisfied with every repair, installation, and maintenance appointment we fulfill.


Our friendly and experienced technicians work their hardest to minimize all stress and disruption associated with service.

Same-Day Water Heater Installs
Same-Day Water Heater Installs

We know how stressful it is to be left without hot water, so we offer same-day water heater installation for your ultimate convenience.


You'll never go through unnecessary upsells with Action because we believe in providing maximum value for every customer.


As a family-owned business, we prioritize providing our neighbors with the best customer service in the industry.

Online Specials
Online Specials

Home services can sometimes be a challenge to finance, so we offer various online specials to put repairs and installation within reach.

What Our Clients Are Saying

Mike has lots of experience under his belt! He got down to the problem quick and get us our heat back within 2 hours including getting us the part needed for repair. Thank you Mike…

-F. Arifin

I've had Action work on electrical and plumbing at my previous jobs as well as electrical, plumbing and heating and air conditioning in my home. Not once have I had a bad experience through the…

-B. Richman

Our main sewer connection from the house to the septic system became clogged. Action was able to respond within 24 hours. Matt came and helped troubleshoot the issue with his helper. They determined there were…

-R. Wolff

I have an old house that has been slowly trying to drive me insane. Thanks to everyone at Action! I consider myself pretty handy until it involves plumbing or electrical and that’s where Action steps…

-K. Kay

Action has performed multiple repairs for us over 10 years, at two different homes. They've always been on time, professional, and efficient. We feel we're being charged a fair price for the work they do,…

-J. Justice