Need to replace the air controls on a Master Spa? We offer a great selection of certified OEM Master Spa air control replacement parts, including Master Spa air control valves, dials and more. The air controls, which are located at the top of your spa, manage the force of your jets, the air to water ratio, and mix. When not in use, keep your Master Spa air controls in the closed position, as air bubbles tend to cool the water and decrease efficiency. Need help finding the correct air control replacement part? Locate your year, make and model number and call our Customer Service team today at (855) 308-2149. We’re happy to help!