Air Control

An air control valve is the small twist knob on the top of your hot tub that mixes air into the jet stream — turn it open for a stronger, more aerated massage; close it for a quieter, smoother flow. Over time the internal o-rings dry out and the cap cracks from UV exposure, leaving the valve stuck open or seized closed. This collection has replacements for the standard sizes used across Arctic Spas (Klondiker, Yukon, Frontier, Tundra, Cub) and most other major-brand hot tubs.

Currently restocking — call your nearest Arctic Spas Ontario showroom (Kitchener 226-240-0114, London 226-919-8220, or Windsor 519-204-9413) for ETA or for a compatible alternative we can source from inventory. Free Ontario shipping over $169 once stock returns.

Frequently asked questions

What does a hot tub air control do?

It opens or closes a small port that draws ambient air into the jet line. More air gives the jets a stronger, more aerated feel; less air gives a smoother, hotter massage (because cold air isn't being mixed in).

Why is my hot tub losing heat overnight?

One common cause: an air control left fully open. Open valves pull cold ambient air through your plumbing 24/7 and can drop overnight water temperature noticeably. Close the air controls when you're not soaking.

My air control knob is stuck — can I fix it?

Usually yes. Remove the cap, clean out the calcium buildup with a soft brush and white vinegar, and grease the o-rings with silicone spa lubricant (never petroleum). If the cap is cracked, replace the valve.

Are air control valves universal?

Standard sizes are 1" and 2" (referring to the cap, not the plumbing). Most Arctic Spas use industry-standard Waterway-style valves that fit a wide range of aftermarket replacements. Measure the cap before ordering.