![Dark blue monochrome illustration of a grand tropical estate in Naples, Florida](/sites/default/files/2026-09/naples-fl-bg_0.png?alternateWidths=/sites/default/files/styles/canvas_parametrized_width--%7Bwidth%7D/public/2026-09/naples-fl-bg_0.png.avif%3Fitok%3D1FRqFqx8) # Indoor Air Quality Whole-home dehumidifiers, filtration, UV coil lights, and humidity control that keep Naples and Marco Island homes dry, fresh, and mold-free, including seasonal homes that sit closed up. [Request Service ](/contact-us) [Call Us ](tel:2393765945) ## Breadcrumb 1. [Home](/) 2. Indoor Air Quality # Indoor Air Quality in Naples, FL ## *Humidity Control, Filtration & Air Purification for Marco Island, Bonita Springs & Collier County* In Southwest Florida, indoor air quality starts with one word: humidity. Outdoor relative humidity sits above 70 percent for most of the year, and a home that does not manage moisture ends up with musty odors, mold on grout and closet walls, warped doors, and air that feels sticky even when the thermostat says 74. Paul Stein Plumbing has been keeping Marco Island and Naples homes dry from the plumbing side since 1961. As we add HVAC to what we do, controlling the air inside your home is a natural extension, and we bring the same licensed, plainspoken approach to it. ## Humidity Is the Problem to Solve First Air filters and purifiers get the most attention, but in Collier County, the biggest improvement most homes can make is keeping indoor relative humidity between 45 and 55 percent. That range is where mold and dust mites struggle, where wood and drywall stay stable, and where 76 degrees actually feels comfortable. There are two ways to get there: ### A properly sized, well-tuned air conditioner Your air conditioner removes moisture only while it is running. An oversized system that cools the house in ten minutes and shuts off leaves the humidity behind. Variable-speed and two-stage equipment, correct sizing, and a clean coil all improve how much water your system pulls out of the air. If your home is cool but clammy, a [tune-up](/air-conditioning/ac-maintenance) is the place to start, and sometimes the answer is a [right-sized replacement](/air-conditioning/ac-installation). ### A whole-home dehumidifier For homes that stay humid even with a healthy AC, especially during the shoulder seasons when it is muggy but not hot enough for the air conditioner to run much, a whole-home dehumidifier ducted into the air handler removes moisture independently of cooling. It is the single most effective indoor air quality upgrade for a Southwest Florida home, and it is what we recommend most often for seasonal residences. ## Filtration and Purification Once humidity is under control, cleaner air is a matter of what you filter and, in some cases, what you treat: - **Media filters.** A four- or five-inch pleated media cabinet at the air handler captures far more dust, pollen, and pet dander than a one-inch filter and only needs changing a few times a year. - **High-efficiency filtration.** For allergy and asthma sufferers, we can install filtration rated to catch much smaller particles without choking airflow. - **UV lights.** A germicidal UV lamp mounted at the evaporator coil keeps the coil and drain pan free of the biological growth that thrives in a constantly wet Florida air handler, which is where most "AC smell" comes from. - **Duct sealing.** Leaky return ducts in a hot, dusty attic pull unfiltered air into the system. Sealing them improves both air quality and efficiency. - **Fresh-air ventilation.** Tight modern homes can benefit from controlled fresh-air intake that is filtered and dehumidified before it enters the house. ## Closed-Up Seasonal Homes Nothing hurts indoor air quality in Naples and Marco Island like a house sitting empty through the summer. With no one opening doors and the thermostat set high to save money, humidity climbs, and mold can be visible on furniture and ceilings by the time the owner returns in November. Our recommendations for seasonal residents: - Keep the air conditioner running while you are away, at a moderate setpoint rather than turned off - Install a thermostat with a humidity setting, or a standalone humidistat, so the system runs for moisture as well as temperature - Consider a whole-home dehumidifier, which handles moisture even on mild days - Have the condensate drain flushed and the float switch tested before you leave - Arrange for a property manager or our team to check the system mid-summer ## Signs Your Home Has an Air Quality Problem - A musty or sour smell, particularly when the AC first starts - Condensation on windows, supply vents, or toilet tanks - Visible mold or mildew in closets, on grout, or on the air handler - Dust that returns within a day of cleaning - Allergy or asthma symptoms that improve when you leave the house - Wood doors and drawers that swell and stick in summer - Indoor humidity readings consistently above 60 percent ## Let's Look at Your Home We will measure your indoor humidity, inspect the air handler and coil, and give you honest options ranked by how much difference each will make. To schedule an indoor air quality assessment in Naples, Marco Island, or Bonita Springs, call [(239) 376-5945](tel:2393765945) or [request service online](/contact-us). If the moisture problem turns out to be a leak rather than the air, our [leak detection](/residential-plumbing/leak-detection-repair) team is the same phone call. [ ![Pink piggy bank beside clipboard and calculator, with outdoor AC unit and people on patio](/sites/default/files/2026-06/financing-bg-image.png?alternateWidths=/sites/default/files/styles/canvas_parametrized_width--%7Bwidth%7D/public/2026-06/financing-bg-image.png.avif%3Fitok%3DJ2ErpVIW) ### Financing Available Comfort Now, Pay Later ](/financing) #### Request an Appointment Get in touch with Paul Stein Plumbing if you need service at your home or business. Same-day service and 24/7 emergency response across Collier County. [Let's Get Started! ](/contact-us) #### Our Services --- - [Plumbing](/residential-plumbing) - [Bathroom Plumbing](/residential-plumbing/bathroom-plumbing) - [Kitchen Plumbing](/residential-plumbing/kitchen-plumbing) - [Fixture Services](/residential-plumbing/fixture-services) - [Shower Services](/residential-plumbing/shower-services) - [Garbage Disposals](/residential-plumbing/garbage-disposals) - [Gas Line Plumbing](/residential-plumbing/gas-line-plumbing) - [Leak Detection & Repair](/residential-plumbing/leak-detection-repair) - [Slab Leaks](/residential-plumbing/slab-leaks) - [Piping & Repiping](/residential-plumbing/piping-repiping) - [Water Line Services](/residential-plumbing/water-line-services) - [Water Heater Repair](/residential-plumbing/water-heater-repair) - [Water Heater Installation](/residential-plumbing/water-heater-installation) - [Tankless Water Heater Repair](/residential-plumbing/tankless-water-heater-repair) - [Tankless Water Heater Installation](/residential-plumbing/tankless-water-heater-installation) - [Water Treatment](/residential-plumbing/water-treatment) - [Plumbing Maintenance](/residential-plumbing/plumbing-maintenance) - [Sewer & Drain](/sewer-and-drain) - [Drain Cleaning](/sewer-and-drain/drain-cleaning) - [Hydro Jetting](/sewer-and-drain/drain-cleaning/hydro-jetting) - [Sump Pump Services](/sewer-and-drain/sump-pump-services) - [HVAC](/hvac) - [Air Conditioning](/air-conditioning) - [AC Repair](/air-conditioning/ac-repair) - [AC Installation & Replacement](/air-conditioning/ac-installation) - [AC Maintenance & Tune-Ups](/air-conditioning/ac-maintenance) - [Emergency AC Repair](/air-conditioning/emergency-ac-repair) - [Ductless Mini-Split Systems](/air-conditioning/ductless-mini-splits) - [Indoor Air Quality](/air-conditioning/indoor-air-quality) - [Heating](/heating) - [Heating Repair](/heating/heating-repair) - [Heating Installation & Replacement](/heating/heating-installation) - [Heat Pump Services](/heating/heat-pumps) - [Heating Maintenance](/heating/heating-maintenance) - [Commercial](/commercial-plumbing) - [Emergency Plumbing Services](/commercial-plumbing/emergency-plumbing-services) - [About](/about-us) - [Contact Us](/contact-us) - [Areas We Serve](/service-areas) - [Careers](/about-us/careers) - [Reviews](/reviews) - [Financing](/financing) - [Coupons](/coupons) ## Our Customers Say It Best *See why homeowners trust us with their comfort.* ### Customer reviews Previous Next ### [ “I will call Paul Stein for all of our plumbing needs.” ](/) Lori L. --- “They responded quickly and came out within 2 days. The pro discussed options, fixed issues, and diligently and efficiently dealt with some challenges of our 45 year old home.” ### [ “I would recommend their service to anyone.” ](/) Elaine M. --- “Paul Stein Plumbing did an outstanding job repairing a leak in our master bathroom toilet. They were on time, identified the problem quickly and did the repair. Their service person was polite and professional.” ### [ “Ryan did an excellent job on the installation.” ](/) Judy C. --- “Ryan was very efficient. He told me the options in types of faucets and he let the decision up to me. I am very satisfied with my choice.” [See all reviews ](/reviews) Local Service Areas #### Proudly Serving Marco Island, Naples & Collier County Paul Stein Plumbing is proud to serve Marco Island, Naples, Bonita Springs, Estero, Golden Gate, Goodland, Isles of Capri and the greater Collier County area. If you don’t see your community listed, contact us to see if we can still help! - [Marco Island](/reviews) - [Naples](/area-we-serve/30a) - [Bonita Springs](/area-we-serve/alys-beach) - [Estero](/area-we-serve/blue-mountain-beach) [Request Service ](/contact-us)