Circ Laing 3/4" Mpt

The Laing 3/4" MPT Circulation Pump is a replacement circ pump for older Arctic Spas equipped with the original Peak Ozone system. It threads in via a 3/4" male pipe thread (MPT) connection on each end — the standard fitting on first-generation Peak Ozone equipment.

What a circ pump does: The circulation pump is the small dedicated pump that runs continuously (or on a programmed schedule) to push water through the heater, filter, and ozone generator between jet sessions. Unlike the main jet pumps that only fire when you press the button, the circ pump is the workhorse keeping your water filtered and tempered 24/7. When the circ pump fails, the spa stops holding temperature properly, water clarity declines, and the ozone generator stops getting water flow.

Will this fit my spa? Yes, on older Arctic Spas with the original Peak Ozone system using the 3/4" MPT thread connection. If your spa has the newer Peak 2 Ozone system, you need the Circ Laing 1.5" Unions instead. Pre-2010 Apollo or Coyote spas with their original circ pump need the Circ Pump Apollo pre-2010. Bring the old pump or take photos of the connections to one of our three Ontario showrooms to confirm the right fit before ordering.

Important: Circ pump replacement involves 240V wiring at the motherboard and live plumbing. Most spa owners book a service tech for this. Shut off the spa breaker before any work and confirm the GFCI holds after install.

Quick tips:

• If the spa has been losing temperature gradually, the circ pump is one of the first suspects — ahead of the heater itself
• Replace any related O-rings or thread sealant during the swap to avoid coming back to a leaking joint