AprilAire

AprilAire Indoor Air Quality in Elgin, IL

Humidifiers, dehumidifiers, air purifiers, fresh-air ventilation and zoning that work with the furnace and air conditioner you already have. We’re an AprilAire Preferred Partner, and we install and service every piece on the system we already maintain.

  • AprilAire Preferred Partner
  • Whole-home, not room by room
  • Works with your existing system
  • Built in Wisconsin since 1954

Who AprilAire Is

AprilAire has been building indoor air quality equipment longer than most heating and cooling brands have been making it.

Since 1938

Parent company Research Products Corporation started in Madison, Wisconsin, and AprilAire is still headquartered there.

The First Whole-House Humidifier

AprilAire introduced it in 1954, and whole-home humidity is still the heart of the line.

Made in Wisconsin

Manufacturing has run out of Poynette, Wisconsin since 1960.

Installed by Pros

AprilAire sells through roughly 4,500 HVAC contractors nationwide rather than off a store shelf.

What We Install

Most homes start with one piece and add more over time. We’ll tell you which one changes the most for your house first.

Winter dry air

Whole-Home Humidifiers

Mounted on your ductwork and controlled automatically, so the whole house stays in a comfortable range instead of one room with a portable unit.

Damp basements

Whole-Home Dehumidifiers

High-capacity units that pull real volumes of moisture out of a basement, crawl space or whole house.

Dust & allergens

Air Purifiers & Filters

Deep media filters from MERV 8 up to MERV 16, sized so your system still breathes.

Stale air

Fresh-Air Ventilation

Tight houses trap odors and VOCs. Ventilation brings in outdoor air on a schedule and helps manage humidity.

Room-to-room

Zoning & Thermostats

Zoning panels and AprilAire thermostats let different parts of the house hold different temperatures, with app control.

Not our work

Radon Control

AprilAire makes radon control equipment, and radon is the leading cause of lung cancer among nonsmokers. We don’t test for radon or install mitigation systems: in Illinois that work must be done by a professional licensed by the Illinois Emergency Management Agency (IEMA).

See all of it on the AprilAire products page, or how the pieces fit together as the Healthy Air System.

What We Put in Most Homes

We standardized on three units. They cover the majority of homes in Elgin and the Fox Valley, and our trucks and our tune-ups are set up around them.

Our humidifier

AprilAire 720

Fan-powered evaporative with HydroCore. Adds up to 21 gallons a day and handles tightly built homes up to 6,250 sq ft, so it has headroom in a January cold snap.

Our dehumidifier

AprilAire E100W

Removes up to 100 pints (12.5 gallons) a day, covers homes up to 5,500 sq ft, drains on its own and reports humidity and filter status over Wi-Fi.

Our air purifier

AprilAire 1210

A 20×25 media cabinet that ships with the MERV 11 filter and takes a MERV 13, MERV 13 with carbon, or MERV 16 filter instead, depending on what you are trying to catch.

Different house, different answer: we’ll size up or down when the home calls for it.

Sizing a Humidifier

Capacity is about the size and tightness of your home, not the size of the furnace. These are AprilAire’s own figures.

ModelTypeAdds per dayGood for homes up to
500BypassAbout 11 gallons1,500 sq ft
600 & 700Bypass and fan-powered16 to 17 gallons3,000 sq ft
720 (what we install)Fan-powered, HydroCoreUp to 21 gallons6,250 sq ft, tightly built
800 & 865SteamVaries with demandHomes needing steam or no bypass path
AprilAire published capacities. We confirm the model on your quote after looking at your home and ductwork. We replace the humidifier water panel, filter or steam canister at your spring maintenance visit.

Dehumidifiers for Illinois Summers and Basements

A dehumidifier does what an oversized air conditioner can’t: pull moisture without overcooling the house.

  • The E100W, our standard unit, removes up to 100 pints (12.5 gallons) of moisture a day and covers homes up to 5,500 sq ft
  • The line runs from the E050 up to the E130, so a crawl space and a whole house get different units
  • Ducted into the system or set up standalone in a basement or crawl space
  • Wi-Fi versions report humidity and filter status from your phone

Damp basement or crawl space? See what we do below grade.

Filtration That Actually Fits Your System

A one-inch filter from the hardware store either lets particles through or chokes airflow. AprilAire’s media cabinets give you real filtration with the surface area to keep static pressure sane.

Filter for the 1210RatedAprilAire’s stated capture
210 (ships with it)MERV 11Dust, lint, pollen, pet dander, mold spores and bacteria
213MERV 13Up to 97% of common allergens and 93% of airborne viruses passing through
213CBNMERV 13 + carbonSame particle capture, plus activated carbon for cooking and pet odors and VOCs
216MERV 1698% of airborne viruses and 99% of asthma and allergy triggers passing through
Capture rates are AprilAire’s ratings for air passing through the filter. AprilAire rates these filters for up to 12 months; we swap yours at both your spring and fall maintenance visits so it never gets that far.

It All Works Better Together

Filtration, humidity control and fresh air each do part of the job. ASHRAE guidance on reducing airborne contaminants points to all three working together, which is what AprilAire built the Healthy Air System around. Add zoning and you have the whole picture, minus radon control: AprilAire makes it, we don’t install it.

Season by season, here’s what tends to matter when: it is always healthy air season.

Why Buy AprilAire From Us

Indoor air quality equipment lives on your heating and cooling system, so it should be installed and serviced by the people who work on that system.

One Team

The same technicians who tune your furnace size, install and service the humidifier hanging off it.

Sized, Not Guessed

Capacity comes from your home’s size, tightness and humidity problems, not from whatever is on the truck.

Serviced Twice a Year

We change the air filter at both your spring and fall visits, and swap the humidifier water panel, filter or canister in the spring.

Whole-Home Thinking

We’ll say when a $40 filter upgrade beats a bigger purchase, and when it doesn’t.

AprilAire FAQs

Do AprilAire products work with my existing furnace and air conditioner?

Yes. AprilAire whole-home equipment installs on your existing ductwork and works with the system you already have. It doesn’t have to match your furnace brand.

What humidity should my home hold in winter?

Most homes are comfortable between about 40% and 60% relative humidity. In an Illinois cold snap you may need to run lower to keep condensation off windows, and an AprilAire control adjusts for outdoor temperature automatically.

How often do the filters and water panels get changed?

AprilAire rates its media filters for up to 12 months, compared with every one to three months for a one-inch filter. We change yours at both your spring and fall maintenance visits, and we replace the humidifier water panel, filter or steam canister at the spring visit.

Is a whole-home dehumidifier better than a portable one?

For a basement or a whole house, yes. The E100W we install pulls up to 100 pints a day and drains on its own, where a portable unit handles one room and needs emptying.

Which AprilAire product should I start with?

It depends on the complaint. Dry air and static point to a humidifier, a musty basement to a dehumidifier, dust and allergies to better filtration. We’ll look at the house and tell you which one moves the needle.

Do you handle radon testing or mitigation?

No. We don’t install radon control systems or provide radon services. In Illinois that work has to be done by a professional licensed by the Illinois Emergency Management Agency.

Are you an AprilAire Preferred Partner?

Yes. We install and service the AprilAire whole-home line across Elgin and the Fox Valley.

Let’s Fix the Air in Your House

Dry winters, damp basements, dust that never settles. Tell us what bothers you and we’ll tell you what fixes it.

Already know what you want? See our indoor air quality services. Paying over time? See financing options.

Product capacities, coverage areas and capture rates are AprilAire’s published figures and are subject to change. Capture rates describe air passing through the filter. Actual performance depends on your home, ductwork and how the system is run. Rest Assured HVAC LLC is an independent contractor and is not AprilAire.