Total volatile organic compounds
TVOC is the combined level of volatile organic compounds in the air — the chemical load given off by furnishings, paints, adhesives, cleaning and cosmetic products, and people. Most are harmless at low levels, but a rising total signals fresh emissions or a build-up that ventilation isn’t clearing.
The chemical load you can’t smell — until it’s high.
VOCs come from everyday products and materials. Individually minor, together they affect comfort, focus and — over time — health.
Symptoms & focus
High VOCs are linked to headaches, eye and throat irritation and reduced concentration — classic “sick building” symptoms.
Long-term health
Some VOCs are harmful with prolonged exposure. Keeping the total low reduces the cumulative chemical burden on occupants.
Early warning
A VOC spike flags a fresh source — new furniture, a cleaning round, a spill — often before anyone notices a smell.
Certification
WELL, LEED and RESET Air all track VOCs. Continuous data evidences a low-emission, healthy interior.
From hygienically safe to “find the source”.
There is no single safe number for every compound, so TVOC is read as a band. The widely used German UBA scale runs from hygienically safe to levels that demand action.
It comes from the things around us.
Almost everything in a fitted-out room can emit VOCs — strongest when new, and whenever products are used.
Furnishings & materials
New furniture, flooring, paints and adhesives off-gas VOCs, heavily at first and tapering over weeks to months.
Cleaning & cosmetics
Cleaning agents, sprays, perfumes and hand products release VOCs in sharp, repeating peaks.
Activities & processes
Printing, cooking, lab work and craft activities all add to the total during use.
Under-ventilation
Without enough fresh air, emitted VOCs accumulate instead of clearing — turning minor sources into a high reading.