VOCs in the Home: Sources, Symptoms, and What to Test

VOCs are carbon-based chemicals that evaporate at room temperature. Some are harmless. Many — like formaldehyde, benzene, toluene, and trichloroethylene — are not. They're in your paint, your particleboard furniture, your carpet padding, your dry cleaning, and your air freshener.

Top sources in the average home

• New paint, especially in the first 6 weeks after application

• Pressed-wood furniture and cabinetry (particleboard, MDF)

• Carpet, carpet padding, and adhesives

• Cleaning products and aerosol sprays

• Gas appliances and attached garages

Symptoms

Acute high exposure causes headaches, dizziness, eye and throat irritation, and nausea. Long-term low-level exposure has been linked to liver and kidney effects, central nervous system damage, and certain cancers. Children, pregnant women, and people with asthma are most sensitive.

When to test

If you've recently moved into a new build, finished a renovation, installed new flooring, or someone in the home has unexplained respiratory symptoms — test. A VOC home kit collects air over 24 hours using a passive sampler, then ships back to a lab that identifies and quantifies dozens of individual compounds.

Reducing VOCs

1. Choose low-VOC or zero-VOC paint and finishes

2. Air out new furniture in a garage for a week before bringing it inside

3. Use HEPA + activated carbon air purifiers for ongoing filtration

4. Increase ventilation — open windows or run an HRV/ERV system