Welcome to your one-stop destination for Master Spa filters — the essential component for maintaining crystal-clear water and extending the life of your hot tub. At Master Hot Tub Parts, we specialize in providing the finest filter replacements for all Master Spa models, from EcoPur to outer filter cartridges. Whether you’re doing routine maintenance or a full replacement, you’re in the right place.
Using high-quality master spa filters ensures your hot tub water remains clean, safe, and chemical-balanced. A poor-quality or expired filter not only reduces your spa’s efficiency but can also cause wear on your pumps and plumbing. That’s why we only stock premium filters that are compatible, durable, and proven to perform.
Explore Our Range of Master Spa Filters
We carry the full line of EcoPur and EcoPur Charge filters, along with outer filters and bundled sets designed for maximum filtration power. Whether you own a Twilight, Clarity, or H2X Trainer Series spa, our inventory is tailored to fit your model.
EcoPur Charge Filters – The Ultimate in Water Purity
Designed using advanced filtration media, EcoPur Charge Filters provide better water quality with fewer chemicals. These filters remove microorganisms, heavy metals, and contaminants more effectively than traditional designs. They’re compatible with most Master Spas and offer:
Longer lifespan
Reduced chlorine use
Easy maintenance
Master Spa Filter Replacement: When & Why to Do It
Typically, filters should be replaced every 12 months or sooner if your spa usage is high. Signs it’s time for a replacement include cloudy water, poor jet performance, or increased chemical needs. Regularly changing your master spa filters ensures better water quality and a longer-lasting hot tub.
Here are some top-rated options you can find on this page:
| Filter Type | Compatibility | Lifespan | Highlights |
|---|---|---|---|
| EcoPur Charge Filter | Twilight, Legend Series | 6–12 months | Best for premium filtration |
| Outer Filter Cartridge | All Master Spa models | 6 months | Easy to install, budget-friendly |
| Filter Bundle Sets | Varies by model | 6–12 months | Complete replacement, cost-saving |
Filter Bundles – Save More, Get More
Looking for the best value? Try our filter replacement bundles, which include both inner EcoPur and outer filters. Ideal for annual maintenance and a great way to save on shipping.
Customer Favorites Include:
EcoPur Charge + Outer Filter Combo
Clarity Series Filter Replacement Set
H2X Swim Spa Dual Cartridge Kit
Expert Filter Advice – Just a Call or Click Away
Confused about which master spa filter fits your model? Our support team can help you identify the correct part using your spa’s serial number. We’re also available by phone or live chat, so you’re never left guessing.
How often should I replace my master spa filters?
We recommend replacing filters every 6 to 12 months depending on usage and water quality.
Are EcoPur filters better than standard filters?
Yes, EcoPur filters offer advanced filtration and can significantly reduce chemical use.
Can I clean and reuse master spa filters?
You can rinse them monthly, but replacement is necessary once performance drops or buildup occurs. Extend the life of your filters by cleaning them with Master Clear Spray Filter Clean!
What’s included in a filter bundle?
Typically, it includes one EcoPur Charge filter and one outer filter—customized by spa model.
Do your filters fit all Master Spa models?
Yes! We stock filters for all series including Twilight, Clarity, Michael Phelps, and H2X.
How fast is your shipping?
We offer fast, same-day shipping on most orders placed before 3PM ET.
Thousands of hot tub owners trust us for their master spa filters because we combine high-quality products, fast shipping, and expert guidance. Don’t wait for dirty water or failed filtration to ruin your next soak. Order your filter today and experience the purest spa water possible.
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All products come with a 30 day warranty to ensure you're covered.
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