Is Your Home Making You Sick? Signs of Poor Indoor Air Quality

You change your air filter occasionally, your home looks clean, and the HVAC system runs fine — so why do you and your family seem to have persistent sniffling, headaches, or fatigue that improves when you're outside or traveling? Your home's indoor air quality may be the culprit. The EPA estimates that Americans spend about 90 percent of their time indoors, where air can be 2 to 5 times more polluted than outdoor air. Here's how to recognize poor IAQ and what to do about it.

Common Symptoms of Poor Indoor Air Quality

These symptoms, particularly when they improve when you leave your home, suggest an indoor air quality problem:

Respiratory symptoms: Persistent coughing, wheezing, shortness of breath, or worsening asthma symptoms that seem worse at home than elsewhere.

Allergy-like symptoms: Sneezing, runny nose, watery or itchy eyes, and nasal congestion that don't follow typical seasonal allergy patterns — or that occur year-round.

Headaches and fatigue: Persistent low-grade headaches, unusual fatigue, or difficulty concentrating that clears up after leaving the home and returning.

Skin irritation: Dry, itchy skin or eczema flare-ups that correlate with time spent at home.

Sleep disturbances: Waking up congested or with respiratory irritation more often than when sleeping away from home.

If multiple family members share similar symptoms and all symptoms improve away from home, that pattern strongly suggests an indoor air quality issue.

Common Indoor Air Quality Culprits

Volatile organic compounds (VOCs): Off-gassing from paints, flooring, furniture, cleaning products, and building materials. New construction or recent renovations significantly increase VOC levels. VOCs range from mildly irritating to genuinely toxic with chronic exposure.

Mold and mold spores: Idaho's irrigation season creates elevated outdoor humidity that can infiltrate homes. Bathrooms, basements, and anywhere with moisture management issues are common mold sources. Mold spores are a powerful allergen and respiratory irritant.

Dust mites: Present in virtually every home, dust mites and their waste products are among the most common indoor allergens. They thrive in bedding, upholstered furniture, and carpeting.

Pet dander: Even homeowners who aren't obviously allergic to pets can experience cumulative sensitivity from high dander loads in a home with multiple pets.

Combustion byproducts: Gas stoves, fireplaces, and poorly vented appliances can release nitrogen dioxide, carbon monoxide, and particulates into living spaces.

Outdoor pollutants tracking in: Pollen, pesticides, and in Treasure Valley communities, agricultural dust and smoke infiltrate through normal building envelope leakage.

What You Can Do

Step 1 — Upgrade filtration: Replace your standard filter with a MERV 13 option or install Ashley's Electronic Air Cleaner for significantly better particle capture without restricting airflow.

Step 2 — Add active purification: The Aerus Air Scrubber goes beyond filtration to actively reduce bacteria, viruses, VOCs, and odors throughout your home. The Active Gold Air Purifier adds UV germicidal irradiation.

Step 3 — Control moisture: Maintain indoor humidity between 30 and 50 percent to inhibit mold and dust mite growth. Ashley can discuss whole-home humidification and dehumidification options.

Step 4 — Clean your ducts: If your home has never had ductwork cleaned, it may be harboring years of accumulated dust, debris, and allergens that recirculate every time your HVAC system runs.

Step 5 — Address the sources: Reduce VOC-emitting products, improve bathroom ventilation, check for moisture issues in crawl spaces and basements.

When to Call a Professional

If you suspect a serious mold problem, persistent CO exposure, or significant VOC contamination from a recent renovation, a professional indoor air quality assessment is the appropriate starting point. Ashley Heating Air and Water can evaluate your HVAC system's contribution to indoor air quality and recommend equipment solutions. For structural moisture or mold issues, a qualified home inspector or remediation specialist should be involved.

Call Ashley Heating Air and Water at 208-378-9445 or visit ashleyheating.com to discuss indoor air quality solutions for your Treasure Valley home.