<img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=211841999395698&amp;ev=PageView&amp;noscript=1">
Air Cleaners, Purifiers & Filters
Ultimate Cleaning Combo

Let's Clear the Air: Indoor Air Quality Systems Help Keep Your Chicago Home Healthy & Comfortable

Your HVAC system filters your indoor air to remove particulate matter, but if you have family members or visitors who suffer from allergies, you should consider installing an air cleaner and/or humidifier to help keep your indoor air pollutant-free and comfortable.

Air Quality System Installation Services

Our experienced HVAC technicians can recommend the right air cleaner and/or humidifier for your home and install it with no muss and no fuss. We always clean up the workspace, and estimates on new equipment are always free.


Humidifiers add moisture to your air in order to protect your finishes and your health. Some of the finishes in your home require a certain percentage of humidity in order to function well and remain beautiful. Finishes and structures damaged by excessively dry air include hardwood floors, wooden furniture and hardwood moldings. When it comes to your health and comfort, properly humidified air can reduce static electricity and help you breathe better.

Our licensed HVAC technicians in Chicago can install standalone, fan-powered humidifiers, which are separate units that connect to your home's ductwork. Other options include ductless humidifiers or bypass humidifiers, which are directly connected to your HVAC system. We are proud to offer high-quality, durable Aprilaire humidifiers.

Why Get a Whole Home Humidifier?

Breathing in dry air all winter dries out your sinuses. You’re more likely to get a cold because your mucus is not as able to catch things that you breathe in.

Warm moist air feels warmer and holds heat better, so a humidifier can help you feel comfortable at a lower temperature.

Dry air will remove moisture from wherever it can. Without proper humidification, floors, walls, furniture and musical instruments can crack, shift and lose their shape.

Dry air can cause itching, flaking and chapped lips. Overly dry air can exaggerate existing skin conditions such as eczema and acne.

When the air is too dry, static electricity builds up causing clothes to stick together and—more noticeably—painful electrical shocks. Static electricity can even damage your electronics.

Reduce or even eliminate the problems associated with dry indoor air with a whole house humidifier from Althoff Industries.

Choose the Best Humidifier For Your Home

We are proud to offer high-quality, durable Aprilaire humidifiers. Our experts can help you find the humidifier that will be the best fit for your HVAC system, budget and comfort needs. Our qualified technicians will install the equipment right, with no hassles, no mess and no repeat visits.

What type and model of humidifier do you need?


What size of humidifier do you need?


Air Cleaners, Purifiers & Filters

Enhance the air quality in your home with a state of the art air cleaning system from Althoff.

In our climate we spend long stretches of the year inside. According to the EPA, the air indoors where we spend as much as 90% of our time can be more polluted than city smog! That pollution can lead to all kinds of health complications, from infections and allergic reactions to asthma and other respiratory problems.

Indoor air pollution is more than just the dust you see on end tables or bookshelves. What’s actually swimming around in the air is an invisible mix of dust mites, pollen, dander, mold, smoke, bacteria, and volatile organic compounds (VOCs).

To fight these indoor contaminants you need a whole house air cleaning system that gets to the root of the air quality issues in your home.

Filtration, purification and odor removal are the keys to cleaner, healthier indoor air. We offer the air cleaning equipment and expertise to do all three. From media filters and cabinets that remove allergens to air scrubbers and HEPA purifiers, we can recommend and install what you need to breathe easier.

We’ll help you find an air cleaning system that works best with your heating/cooling system and your humidifier, then install it quickly and correctly so you can begin to breathe easier.

 Air Filtration

We recommend a high efficiency media filter and cabinet from Aprilaire. Based on your needs our typical installation is either Merv 11 or Merv 13.

MERV means Minimum Efficiency Reporting Value which was developed by the American Society of Heating, Refrigeration and Air Conditioner Engineers - ASHRAE. MERV values vary from 1 to 16. The higher the MERV value is the value the more efficient the filter will be in trapping airborne particles.



Merv 11

  • Removes 94% of pollen and mold
  • Removes 72% of airborne bacteria and fungi
  • Removes 56% of dust particles

Aprilaire Model 1210 Air Purifier


Merv 13

  • Traps 98% of pollen and mold spores
  • Captures at least 97% of bacteria and fungi
  • Traps 96% of pet dander and dust
  • Traps <75% of tobacco smoke and smog

Aprilaire Model 2210 Air Purifier

Purification and Odor Removal


We recommend the Air Scrubber by Aerus.

  • Installed in the ductwork of the central air system
  • Unique combination of UV-C light and activated carbon
  • Effectively reduces odor-causing VOCs



Ultimate Air Cleaning Combination

residential-air-filterAbatement Technologies HEPA Residential Air Purifier

  • Convert Your Home HVAC System into a Hospital-Grade HEPA Filtration System
  • HEPA Filtration can remove at least 99.97% of microscopic airborne particles @ 0.3 microns in size
  • Multiple filtration stages remove particles far too small to be captured by most types of filters
  • The ultimate indoor air quality (IAQ) solution for homes equipped with forced air HVAC systems
  • Bring relief to family members who are sensitive to airborne allergens
  • Germicidal UV (UVGI) lamp technology irradiates and helps control mold spores and bacteria

Our qualified technicians will install the equipment right, with no hassles, no mess and no repeat visits.

Our qualified technicians will install the equipment right, with no hassles, no mess and no repeat visits.

Experience You Can Trust for Indoor Air Quality Services

Althoff has been installing, replacing, and upgrading HVAC systems in Chicago and the surrounding suburbs for nearly 60 years.

  • Family owned and operated
  • Licensed, insured, and bonded
  • True 24 hour service
  • Live phone operators and staff
  • Employees drive marked vehicles and wear a uniform & ID badge
  • We perform a size analysis on every job
  • We quote firm prices upfront
  • We install only quality brands and products
  • Professionally trained installers
  • Ongoing training in our state of the art training lab
  • We clean up when we’re done
  • We offer a variety of payment options
  • Satisfaction guaranteed

Our licensed HVAC technicians arrive at your home within a convenient 2-hour window (we always call when we're on the way). We'll park our clearly marked service truck in the street in clear view of the house, not in your driveway. We'll be easy to recognize in our clean uniform and name badge as we greet you with a business card and a smile. Our technicians never enter your home before asking permission and putting on their shoe covers. They carry “red carpets” and drop cloths to set their tool bags on and protect your property.

We respect your time and your home. We do everything we can to make your service call convenient and comfortable.


"Matt knows our systems and definitely knows what he is doing. We have total confidence when he leaves that everything is done correctly."

~ T.S from North Barrington, IL


"Althoff's is a very good company who always gives great service and timely service by well-trained technicians. We are delighted to do business with this company!!"

~ R.G. from Crystal Lake, IL


"The tech was on time, efficient, and extremely knowledgeable. I would definintly use this individual again, if or when I need this kind of help."

~ M.S. from Crystal Lake, IL


Let Our Customers Tell You How Great We Are

More Reviews