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The 5 Amp Slow Blow (FST) by Master Spas is a replacement fuse made to go in your home spa. The fuse allows a greater level of power to flow without disrupting the circuit or blowing the fuse itself. The piece is affordable, easy to install and can be a simple fix for a problem with your spa

One of the things we love about the Swim Spa Eco Pur Filter is that is can reduce your chemical consumption by up to 75% while cleansing your spa or hot tub of harmful contaminants, bacteria, and microbes. Essentially, this mineral filter for Swim Spas is the filter that pays for itself!

This Eco Pur pure filter works with most Master Spa® H2X & Michael Phelps Swim Spas.

As the "command center" of your spa, the circuit board is tasked with making sure your blowers, lights, air filtration system, and high-limit sensors work correctly. Whether you're looking to replace your Down East Spas MS510/1500/1600 Ext. PCB (V/N 53681) or another unit, Master Spa Parts offers a vast selection of replacement circuit boards. These are all competitively priced and ready to ship.

The Circuit board replacement for Twilight Series™ Spas always ships typically within 24 hours to customers ordering this and other spa circuit boards through the Master Spa Parts online store.

The CoverCatch helps keep your spa cover close by and off the ground! It is ideal for smaller sizes spas and covers.

MS 50 U Control Pack

SpaBoss Descummer boosts the effectiveness of the filtration system in your spa or hot tub, helping to keep the water clean and free of left-over contaminants.

Eventually, all spas will experience a failed circuit board. After all, these are electrical components. Master Spa Parts is here to help you restore the enjoyment of your hot tub with this Master Spas® MS501M2 PC Board (V/N 53958) — available at a great price!

We're here to help you get a great deal (and free shipping to the Continental United States) order your Legend Series™ MS501M2 PC replacement today!

Did you know that the amount of microbes on filtration surfaces can double every 20 minutes? The warm water and organic materials are the perfect breeding grounds for germs. But, with the Pleatco H2X® Trainer & Michael Phelps filter PMA-R4, germs and microbes don’t even have a chance. Pick up your Swim Spa ECO PUR CHARGE System Filter from the Master Spa Parts online store, today!

Given enough time, all hot tub circuit boards will fail. But, that doesn't mean you have to give up on your hot tub altogether. At Master Spa Parts, we're happy to introduce this Contractor Series™ PCB, VS500Z (v/n 55140) at a great value to our website visitors.

Let's make this whole broken-down hot tub a thing of the past by ordering this VS500Z (v/n 55140) Contractor Series™ PCB from the Master Spa Parts online store. Plus, most U.S. destinations qualify for free shipping!

The Grey Terminal Block for H2X is designed specifically to work with your H2X Swim Spa. Feed through up to 750V through this Terminal Block.

Keep your water crystal clear with Spa Ease Natural & Clear, an enzyme that breaks down contaminants in your water!

This support arm lower for CoverMate Easy by Leisure Concepts is a direct OEM replacement for your original hot tub cover support arm.