Air Quality Insights

Practical guidance on radon, mold, and home air quality from the certified professionals at DezAir Quality Testing.

Latest Posts

Tips, facts, and local insights for Chicagoland homeowners and buyers.

What Happens If Mold Is Found? | DezAir - Copy

A mold finding isn't a crisis — your report explains what's present and what it means, with next steps if remediation is warranted. ...more

What to Do When Mold Is Found in Your Home

August 26, 20261 min read

Health Symptoms of Mold Exposure | DezAir - Copy

The EPA and CDC note mold exposure can contribute to allergy symptoms, respiratory irritation, and worsened asthma in sensitive individuals. ...more

Mold Exposure & Health Symptoms

August 26, 20261 min read

Radon & Mold Testing Timelines for Closings | DezAir - Copy

Both tests typically take about 3 business days — here's how to plan testing around a real estate closing timeline. ...more

Radon & Mold Testing Timelines for Real Estate Transactions

August 26, 20261 min read

How Much Does Mold Testing Cost? Full Breakdown | DezAir - Copy

Mold testing starts at $375 and covers up to 1,000 sq ft. Here's what's included and how pricing scales for larger properties. ...more

Mold Testing Costs & Pricing Guide

August 26, 20261 min read

How Long Does Mold Testing Take? | DezAir - Copy

On-site collection takes about 30 minutes. Lab processing and your written report bring total turnaround to roughly 3 business days. ...more

Mold Testing Timeline & What to Expect

August 26, 20261 min read

Why Mold Testing Includes an Outdoor Baseline | DezAir - Copy

An outdoor sample isn't testing for a problem outside — it's a comparison point that makes your indoor results meaningful. ...more

Outdoor Baseline Sampling in Mold Testing

August 26, 20261 min read

Signs Poor Indoor Air Quality Is Affecting You | DezAir - Copy

Persistent allergy-like symptoms, fatigue, or respiratory irritation that improve away from home can point to an indoor air quality issue. ...more

Indoor Air Quality & Health Warning Signs

August 26, 20261 min read

Humidity, Moisture & Indoor Air Quality | DezAir - Copy

Excess indoor humidity creates conditions where mold and other air quality issues are more likely to develop. Here's what to know. ...more

Humidity, Moisture & Indoor Air Quality

August 26, 20261 min read

DIY Radon Test Kits vs. Professional Testing | DezAir - Copy

DIY kits can be a reasonable starting point, but professional testing offers faster results, certified equipment, and documented reporting. ...more

DIY vs. Professional Radon Testing

August 26, 20261 min read

Radon Testing Before Buying or Selling | DezAir - Copy

Radon testing is fast enough to fit inside a typical inspection window, and gives both buyers and sellers clarity before closing. ...more

Radon Testing for Home Buyers & Sellers

August 26, 20261 min read

Where Should Radon Be Tested in Your Home? | DezAir - Copy

Radon monitors are typically placed at the lowest livable level of a home, where concentrations tend to be highest. ...more

Radon Testing Locations in Your Home

August 26, 20261 min read

Home Inspection vs. Radon/Mold Testing | DezAir - Copy

A general home inspection covers structure and systems. Radon and mold testing are specialized services that go beyond a standard inspection. ...more

Home Inspection vs. Radon & Mold Testing

August 26, 20261 min read

Illinois Radon Disclosure Law Explained | DezAir - Copy

Illinois law requires sellers to disclose known radon hazards, but doesn't require testing or mitigation. Here's what the law actually says. ...more

Illinois Radon Disclosure Requirements for Buyers & Sellers

August 26, 20262 min read

Health Effects of Radon Exposure | DezAir - Copy

The EPA identifies radon as the second leading cause of lung cancer in the U.S., and the leading cause among non-smokers. ...more

Health Effects of Long-Term Radon Exposure

August 26, 20261 min read

Can New Construction Homes Have Radon? | DezAir - Copy

Radon comes from soil, not building age — new homes can have elevated levels just like older ones. Here's why age isn't a reliable indicator. ...more

Radon Risks in New Construction Homes

August 26, 20261 min read

Questions About Your Home's Air Quality?

We're here to help. Schedule a radon or mold test today and get clear answers within about 3 business days.

872-274-4083

© 2026 DezAir Quality Testing, LLC

17W240 22nd St., 3rd Floor, Oakbrook Terrace, IL 60181