Start by describing what feels different: a persistent smell, stuffy rooms, damp surfaces, excess dust, or uneven temperatures. “Sick home” is a description people use, not a medical or building diagnosis.
Write down the place and time
Compare what you notice across rooms and activities. Note when the issue began and whether you have had recent repairs, leaks, new furnishings, or changes to your HVAC settings.
Choose the right next step
For equipment trouble, request HVAC service. For odors, moisture, or recurring indoor air concerns, ask about an air assessment. For symptoms, consult a healthcare professional as well.
Keep the evidence together
Save dated photos and previous service reports. Our checklist helps organize your observations before a visit. Avoid using a single reading or an online quiz to label the home safe or unsafe.
WHAT THE EVIDENCE SAYS
Research behind this question.
Some pollutants build up indoors
Indoor versus outdoor concentrations of some pollutants · Historical exposure research cited by EPA
EPA reports that concentrations of some pollutants are often 2 to 5 times higher indoors than outdoors.
The comparison applies to certain pollutants. It is not an overall air-quality score or a finding about your home.
EPA · Report on the Environment: Indoor Air Quality · Study context