Air Control Cover Black Round

The Air Control Cover (Black Round) is the visible top cap of an air-control fitting on the spa shell rim. It's the part you turn to adjust how much air mixes into the jets — round profile, matte black finish, the standard look on most Arctic Spas. Replace it when the cap is cracked, faded from UV, or chipped from accidental impact.

Why this part fails: Air control caps live in a brutal environment — they're exposed to chlorinated water from below, UV from above, freeze-thaw cycles in winter, and the constant turning grip of bare hands. Cracks usually start at the splines where the cap mates to the underlying internal mechanism, then propagate outward over a few seasons. Once cracked, the cap won't grip the internal cleanly and the air control becomes hard to adjust.

Will this fit my spa? The Black Round cap is the standard Arctic Spas air-control cap used across most current and recent-vintage Arctic Spas. If you have a different cap style (decorative, themed, or one of the clear options like the Bearclaw Clear), this product replaces it functionally but changes the visible aesthetic. Bring the old cap to one of our three Ontario showrooms if you want to match exactly.

Quick tips:

• If the underlying Air Control Internal is also worn or stiff, replace both at the same time — the threads engage as a set
• Treat your air-control caps once or twice a year with a UV-protectant cleaner like Cover & Cabinet Renew to extend their life
• Don't overtighten when installing — finger-tight is enough; cranking on the cap with a wrench is how splines crack