Whole-Home Dehumidifiers

McNally’s installs, services, and repairs professional-grade whole-home dehumidifiers for homes throughout the Chicagoland area.

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Chicagoland summers pump moisture into your home, and your air conditioner can only wring out
so much of it while keeping you cool. When the sticky feeling, the musty basement, or the
fogged-up windows won’t quit, a whole-home dehumidifier fixes it at the source.

What Is a Whole-Home Dehumidifier?

Unlike portable units with a bucket to empty and one room of reach, a whole-home dehumidifier ties into your HVAC system or serves your home from a central spot like the basement. It pulls moisture from the air your system is already circulating, drains automatically, and holds your entire house at a comfortable, consistent humidity level without you touching it.

Keeping humidity in check does more than end the sticky feeling. It protects basements, closets, and corners from the dampness that feeds mold and mildew, keeps dust mites in check, and makes the air feel cooler at the same thermostat setting, so your air conditioning doesn’t have to work as hard.

Why Not Just Run the A/C Harder?

Your air conditioner removes moisture as a natural byproduct of cooling, but it can only remove so much. When outdoor humidity stays high for days or weeks, the moisture entering your home can exceed what the A/C can wring out while still keeping the temperature comfortable, and cranking it colder just leaves the house chilly and clammy.

A dedicated dehumidifier separates the two jobs: it takes water out of the air whether or not the house needs cooling, which is exactly what basements and mild, muggy shoulder-season days call for. It’s the summer counterpart to the whole-home humidifier that carries your air through the dry winter months.

Condensation collecting on a window from high indoor humidity

Signs Your Home Could Use a Dehumidifier

High humidity leaves fingerprints all over a house. Here’s what it looks like in daily life.

Sticky, Clammy Air

The house feels muggy even with the air conditioning running, sheets feel damp at bedtime, and you keep nudging the thermostat lower without ever feeling comfortable.

Musty Odors & Damp Basements

A basement that smells musty the moment you open the door, or storage boxes and fabrics that come out smelling damp, is trapped moisture with nowhere to go.

Condensation & Mold Spots

Water beading on windows and cold-water pipes, or dark spots creeping into bathroom corners and closet walls, means the air is carrying more moisture than the house can shed.

Recognize your house? We’ll check your system, measure what’s really going on, and give you a straight answer.

Dehumidifier Installation

A whole-home dehumidifier has to be sized to your home and set up correctly: capacity matched to your square footage and moisture load, the unit tied into your ductwork or positioned to serve the problem area, a proper drain run so you never empty anything, and the control set for the way your home actually runs. Our technicians handle the complete installation, and before we recommend one we make sure your existing system is doing its share of the work. Estimates on new dehumidifier installations are always free.

Dehumidifier Maintenance

Dehumidifiers are low-drama machines, but they earn a seasonal touch: a clean filter, a clear drain line, and a control check before the humid months arrive. We handle it as a quick standalone visit, or fold it into your regular tune-up on the Pot of Gold Maintenance Plan.

Dehumidifier Repair

Unit running but not pulling moisture, leaking around the drain, icing up, or throwing an error on the control? We diagnose and repair whole-home dehumidifiers whatever the brand or age of the unit, and we’ll give you an honest answer if a repair no longer makes sense versus replacing it.

Why McNally’s For Your Humidity Control?

McNally’s has kept Chicagoland homes comfortable since 1999. We’re family-owned, we know what
a Midwest summer does to indoor air, and when you call about a humid house we check the
equipment you already own before we recommend anything new.