Relative humidity above 60 percent inside a Chicago home creates the conditions where mold spores germinate, dust mites thrive, and wood trim begins to swell. During humid Midwestern summers, indoor moisture levels can climb well past that threshold, and a properly sized dehumidifier is often the most direct solution. At All Temp Heating & Air Conditioning, we install whole-home and specialized dehumidification systems that pull excess moisture from the air before it damages your property or affects the comfort and health of your family.
Understanding Indoor Humidity and Why It Needs Control
Humidity is the amount of water vapor suspended in the air. When that vapor concentration rises, your body cannot cool itself efficiently through evaporation, which is why a 78-degree room can feel sticky and oppressive at 65 percent relative humidity but comfortable at 45 percent. The goal for most Chicago homes is a stable indoor relative humidity between 40 and 50 percent, a range that discourages microbial growth while preventing the dry-air problems that come from over-drying.
Chicago’s climate makes this a real challenge. Lake Michigan feeds moisture into the air, and older housing stock throughout the city and suburbs often includes basements and crawl spaces that trap dampness. A central air conditioner removes some humidity as a byproduct of cooling, but it was never designed to be a precise humidity control device. On mild days when the thermostat is satisfied quickly, the air conditioner shuts off before it has removed enough moisture. That is where a dedicated dehumidifier does the work the cooling system cannot.
Types of Dehumidification Systems We Install
Not every moisture problem calls for the same equipment. During our assessment, we evaluate the square footage, the presence of basements or crawl spaces, existing ductwork, and the source of the moisture. Based on those factors, we recommend and install one of several system types.
- Whole-home ducted dehumidifiers: These units integrate with your existing HVAC ductwork and treat the air throughout the entire house. They are ideal for homeowners who want set-and-forget humidity control managed through a central humidistat.
- Standalone high-capacity units: Designed for basements, workshops, or finished lower levels where a ducted solution is impractical, these systems drain continuously through a condensate line and require little day-to-day attention.
- Crawl space dehumidifiers: Purpose-built for tight, low-clearance areas, these units help prevent the wood rot and musty odors that migrate upward into living spaces.
- Ventilating dehumidifiers: These bring in a measured amount of fresh outdoor air while removing moisture, improving overall indoor air quality in tightly sealed modern homes.
Each option carries different capacity ratings measured in pints of water removed per day. A small unit rated at 30 pints handles a modest basement, while a whole-home ducted system may be rated at 70 to 130 pints to cover an entire residence. Matching that capacity to the actual moisture load is the difference between a system that runs efficiently and one that either fails to keep up or short-cycles wastefully.
Our Dehumidifier Installation Process
We approach every dehumidifier installation methodically because the placement, drainage, and electrical integration all affect long-term performance. When you schedule an installation with All Temp Heating & Air Conditioning, the work follows a defined sequence that protects your home and ensures the equipment performs to specification.
- On-site evaluation: We measure existing humidity levels, inspect ductwork and drainage options, and identify moisture sources such as sump pits, unsealed crawl spaces, or foundation seepage.
- System selection and sizing: We calculate the required moisture-removal capacity based on square footage and load, then recommend equipment matched to your home rather than a one-size-fits-all box.
- Placement and mounting: For ducted units, we determine the optimal tie-in point to the supply or return plenum. Standalone units are positioned for airflow and access to a drain.
- Drainage and electrical connection: We route the condensate line to a floor drain, sump, or condensate pump, and connect the unit to a proper circuit that meets code requirements.
- Humidistat setup and testing: We program the target humidity setpoint, verify the unit cycles correctly, and confirm that moisture readings begin to drop before we consider the job complete.
Throughout this process, our technicians keep your home clean and explain what they are doing. We walk you through the controls before we leave so you understand how to adjust the setpoint seasonally and how to recognize when routine maintenance is due.
Common Problems a Dehumidifier Solves
Homeowners across Chicago, Bolingbrook, Skokie, Evanston, Lincolnwood, Morton Grove, Niles, Park Ridge, Woodridge, and Darien, IL call us when they notice the telltale signs of excess indoor moisture. A musty basement smell is one of the most frequent complaints, and it almost always traces back to relative humidity that stays too high for too long. Condensation forming on windows, cool basement walls, or metal ductwork is another clear indicator that the air holds more water than the surfaces around it can tolerate.
Beyond comfort, uncontrolled humidity carries real consequences. Persistent dampness warps hardwood flooring, delaminates cabinetry, and leaves a clammy film on furniture. It also creates a breeding environment for mold and dust mites, both of which are common triggers for allergy and asthma symptoms. Families with children or members who have respiratory sensitivities often see noticeable improvement once indoor humidity is brought under control. Protecting stored belongings, electronics, and important documents in a basement is another reason many customers pursue installation.
Technical Specifications That Guide Our Recommendations
When we specify a dehumidifier, several technical figures drive the decision. Capacity, expressed in pints per day, must exceed the estimated moisture load with enough margin to run efficiently rather than continuously. Energy efficiency, measured by the integrated energy factor in liters per kilowatt-hour, matters for units that operate through long stretches of the summer season. A more efficient unit removes the same amount of water while drawing less electricity.
We also consider the operating temperature range, since some units struggle in cool crawl spaces where the coil can frost over. Modern equipment includes automatic defrost cycles to address this. Drainage configuration is another specification we plan carefully, choosing between gravity drainage, a built-in pump, or an external condensate pump based on where water needs to travel. Finally, we account for airflow ratings in cubic feet per minute for ducted units so the dehumidifier integrates cleanly with your furnace blower without creating pressure imbalances in the duct system.
Why Chicago Families Choose All Temp Heating & Air Conditioning
All Temp Chicago Heating & Air Conditioning has become the first choice for tens of thousands of families throughout the Chicago and suburban areas. We remain a family owned and operated company, and that ownership shows in the care our technicians bring to every installation. Beyond dehumidifiers, we sell and service quality furnaces, air conditioning, boilers, air purifiers, humidifiers, ventilation, and water heaters, which means we understand how each piece of your home comfort system interacts with the others.
Our courteous, fast, and friendly staff handles installation, tune-up, and repair with the same attention to detail. We are also one of Bryant’s highest-rated dealers in the nation, a distinction that reflects both the quality of the equipment we offer and the standard of workmanship we hold ourselves to. When you invest in humidity control, you want it done right the first time, backed by a company that will still be here to support the system for years to come.
If your Chicago-area home feels damp, smells musty, or shows condensation where it should not, a properly installed dehumidifier can restore comfort and protect your investment. Contact All Temp Heating & Air Conditioning to schedule an evaluation, and let us design a moisture-control solution matched to your home and your climate.