Start with a question.
The questions people actually ask about their homes, answered in plain language first. Every answer links down to the research behind it.
Your water
Is my tap water safe to drink?For most people on a US public water system, tap water will not make you sick today.How do I find out what is actually in my water?Two sources tell you.Do I need a water filter?For most US homes, yes.Which water filter do I need?Test first, then match the filter to what the test finds.
Your air
Why is the air inside my house worse than outside?A modern home seals tight and traps what gets made inside it, so the air indoors often reads worse than the air on your street.Do I need an air purifier?An air purifier helps if your problem is airborne particles: cooking smoke, wildfire haze, traffic soot, pollen, or pet dander.Is my gas stove a problem for my air?Cooking on a gas burner releases nitrogen dioxide, fine particles, and benzene right where you breathe, and a tight modern home traps it.Why does my bedroom feel stuffy at night?Your bedroom feels stuffy at night because the carbon dioxide you breathe out builds up behind a closed door faster than the room swaps it for fresh air.What should the humidity be in my house?The humidity in your house should sit at 40 to 50 percent relative humidity in the rooms you live and sleep in.I found mold. How bad is it?A small patch you can see and reach is usually a homeowner job, not an emergency.Is that new-furniture or fresh-paint smell bad for me?That smell is off-gassing: volatile organic compounds (VOCs) evaporating from new paint, furniture, and flooring.
Curious what is actually in your home?
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