Safety: Avoid prolonged exposure to strong chemical fumes. Ventilate the area.

Test water: Use a reliable test kit to check free chlorine/bromine, combined chlorine, pH, and alkalinity.
Shock treatment: If combined chlorine is high, perform a non-chlorine or chlorine shock per MAAX water care guidelines.
Adjust pH: Bring pH into the 7.2–7.8 range using pH up or down products.
Vent cover: Leave the cover partially open for 15–30 minutes after shocking to allow gases to escape.
Review dosing: Follow MAAX-recommended sanitizer levels and avoid over-chlorinating.

Strong chemical or chlorine smell when opening the MAAX spa cover; users experience eye or skin irritation.

Possible Causes