Skip to content
  • šŸ’° Save big on your entire purchase with 20-40% off! šŸ’°
  • šŸ’° Save big on your entire purchase with 20-40% off! šŸ’°
Hot Tubs SaleHot Tubs Sale
  • Menu
    • No products in the basket.

      Return to shop

  • Basket

    No products in the basket.

    Return to shop

  • Hot Tubs
    • JacuzziĀ® Hot Tubs
    • Shop by Size
    • Lay-Z-SpaĀ® Inflatable Hot Tubs
    • Sun & Soulā„¢ Hot Tubs
    • Shop by Price
  • Swim Spas
    • JacuzziĀ®
    • TidalFit
    • Sun & Soulā„¢
    • Shop by Size
  • Garden & Patio
    • Gazebos & Pergolas
    • Saunas
    • Ice Baths
    • Parasols
    • Outdoor Showers
  • Business & Commercial
    • JacuzziĀ® Lodgeā„¢ Spare Parts
    • Chemicals
    • Hot Tubs
    • Air Source Heat Pumps
  • Filters
  • Accessories
    • Pillows & Headrests
    • Drinks Holders & Glassware
    • Cleaning Tools
    • Lifeā„¢ Spa Accessories
    • Steps & Handrails
    • Toys & Games
    • Aromatherapy & Scents
  • Parts
    • Jets
    • Plumbing
    • Electrics
    • Pumps
    • Speakers
    • ClearRay & UV Bulbs
    • Lights
    • Heaters
    • Switches
    • Sensors
    • Arctic SpasĀ® Parts
    • Balboa Parts
    • Gaskets
    • Topside Controls
  • New Arrival
Home / Filters
  • HTF0165 65sq Ft Hot Tub Filter - Hot Spring -Hot Tubs Sale HTF0165 Replacementfor C 8465
  • HTF0325 25sq Ft Hot Tub Filter - Dream Maker Spas -Hot Tubs Sale HTF0325 Front
-30%
HTF0645 45sq Ft Hot Tub Filter - Freeflow Spas
HTF0645 45sq Ft Hot Tub Filter - Freeflow Spas - Image 2
HTF0645 45sq Ft Hot Tub Filter - Freeflow Spas -Hot Tubs Sale Dirt lock All filters 8faf844c bb79 4a50 9418 6f41c1c4dfd5

HTF0645 45sq Ft Hot Tub Filter – Freeflow Spas

£25.00 Original price was: £25.00.£17.50Current price is: £17.50.

SKU: B3V0Z 4796244996 Category: Filters Tags: Bottom-Hole_up to 3.9cm, Brand_freeflow spas, Freeflow spas, Top hole 5cm to 6.9cm
  • Peace of Mind with Every Purchase
  • Where quality meets convenience.
  • Your happiness, our mission.
  • Nature-friendly materials, 100%.
Browse
  • Accessories
    • Aromatherapy & Scents
    • Cleaning Tools
    • Drinks Holders & Glassware
    • Lifeā„¢ Spa Accessories
    • Pillows & Headrests
    • Steps & Handrails
    • Toys & Games
  • Business & Commercial
    • Air Source Heat Pumps
    • Chemicals
    • Hot Tubs
    • JacuzziĀ® Lodgeā„¢ Spare Parts
  • Filters
  • Garden & Patio
    • Gazebos & Pergolas
    • Ice Baths
    • Outdoor Showers
    • Parasols
    • Saunas
  • Hot Tubs
    • JacuzziĀ® Hot Tubs
      • J200ā„¢ Classic Series
      • J300ā„¢ Comfort Series
      • J400ā„¢ Designer Series
      • J500ā„¢ Luxury Series
    • Lay-Z-SpaĀ® Inflatable Hot Tubs
    • Shop by Price
    • Shop by Size
      • 2 Person
      • 4 Person
      • 6 Person
      • 8 Person
    • Sun & Soulā„¢ Hot Tubs
  • Parts
    • Arctic SpasĀ® Parts
    • Balboa Parts
    • ClearRay & UV Bulbs
    • Electrics
    • Gaskets
    • Heaters
    • Jets
    • Lights
    • Plumbing
    • Pumps
    • Sensors
    • Speakers
    • Switches
    • Topside Controls
  • Swim Spas
    • JacuzziĀ®
    • Shop by Size
    • Sun & Soulā„¢
    • TidalFit
  • Uncategorized
  • Description
  • Reviews (0)
Features we love
  • Spa filter replacement for 45Ā sq. ft filtration space
  • Removes scum such as hair, dust, leaves and more
  • Delivers safe clean water and is resilient to chlorine
Need to know

Measures 25.4cm x 13.5cm.

Top Hole: 5.4cm

Bottom Hole:Ā 3.8cm Male Fine Thread

Compatibility

The HTF0645Ā Hot Tub Filter is suitable for Freeflow Spas.

Our Ref: HTF0645 |Ā Pleatco:Ā PFF50P |Ā Unicel:Ā 5CH-45 |Ā Filbur: FC-2401 |Ā Darlly:Ā 50452

FAQs

How does a hot tub filter work?

Water is pumped through the filter, and any debris gets caught in the filter’s pleats. Hot tub filters work alongside chemicals and sanitisers to keep the hot tub water clean and healthy.

How often should I clean my hot tub filters?

We recommend rinsing your hot tub filters once a week and giving them a full clean with cleaning tablets or powder every 4-6 weeks. This will ensure dirt, debris and pollutants are cleared quickly and effectively and will extend the life of your filter. A clean hot tub filter gives you more accurate results when testing the chemicals, meaning you could save money.

If you need more advice on keeping your filters clean, read our how to clean your hot tub filters guide.

How long should my hot tub filters last?

Having a spare filter to rotate when cleaning means that they can last up to 18 months. If you’re not rotating with a spare, you should expect to replace them every 12 months. Purchasing genuine branded hot tub filters allows your system to run more efficiently, thus allowing a more reliable circulation of water and easier maintenance.

Reviews

There are no reviews yet.

Be the first to review “HTF0645 45sq Ft Hot Tub Filter – Freeflow Spas” Cancel reply

Related products

-30%
JacuzziĀ® 6 Hole Skimmer Debris Bag - 6570-392
Quick View

JacuzziĀ® 6 Hole Skimmer Debris Bag – 6570-392

£22.99 Original price was: £22.99.£16.09Current price is: £16.09.
-30%
HTFJAZICMT 27sq Ft Swim Spa Filter - Riptide
Quick View

HTFJAZICMT 27sq Ft Swim Spa Filter – Riptide

£30.00 Original price was: £30.00.£21.00Current price is: £21.00.
-30%
JacuzziĀ® J230ā„¢ Pre-2008 50sq Ft Hot Tub Filter - 373045
Quick View

JacuzziĀ® J230ā„¢ Pre-2008 50sq Ft Hot Tub Filter – 373045

£25.00 Original price was: £25.00.£17.50Current price is: £17.50.
-30%
HTFDIS 50sq Ft Disposable Hot Tub Filter - Artesian, Arctic Spa Coyote Spa Etc
Quick View

HTFDIS 50sq Ft Disposable Hot Tub Filter – Artesian, Arctic Spa Coyote Spa Etc

£15.00 Original price was: £15.00.£10.50Current price is: £10.50.
-30%
HTF0625 22sq Ft Hot Tub Filter - Advanced Spas
Quick View

HTF0625 22sq Ft Hot Tub Filter – Advanced Spas

£29.99 Original price was: £29.99.£20.99Current price is: £20.99.
-30%
JacuzziĀ® J460ā„¢ 40sq Ft Small Hot Tub Filter - 2540-384
Quick View

JacuzziĀ® J460ā„¢ 40sq Ft Small Hot Tub Filter – 2540-384

£29.99 Original price was: £29.99.£20.99Current price is: £20.99.
-30%
HTF0119 19sq Ft Hot Tub Filter - Aegean, Saratoga, Vita Spas
Quick View

HTF0119 19sq Ft Hot Tub Filter – Aegean, Saratoga, Vita Spas

£15.00 Original price was: £15.00.£10.50Current price is: £10.50.
-30%
SundanceĀ® Spas 680 Series 2006+ 40sq Ft Hot Tub Filter - 373043S
Quick View

SundanceĀ® Spas 680 Series 2006+ 40sq Ft Hot Tub Filter – 373043S

£35.99 Original price was: £35.99.£25.19Current price is: £25.19.
MY ACCOUNT
  • Cart
  • Checkout
  • My account
  • Wishlist
ABOUT US
  • About Us
  • FAQ
  • Returns & Exchanges
  • Delivery
  • Contact Us
LEGAL
  • Privacy Policy
  • Payment Method
  • Shipping & Returns
  • Term and Conditions
Signup for Newsletter

Sign up for exclusive offers, original stories, events and more.

    Copyright Ā© 2026 Hot Tubs Sale. All rights reserved. This site is protected by copyright and trademark laws under US and international law.
    • Hot Tubs
      • JacuzziĀ® Hot Tubs
      • Shop by Size
      • Lay-Z-SpaĀ® Inflatable Hot Tubs
      • Sun & Soulā„¢ Hot Tubs
      • Shop by Price
    • Swim Spas
      • JacuzziĀ®
      • TidalFit
      • Sun & Soulā„¢
      • Shop by Size
    • Garden & Patio
      • Gazebos & Pergolas
      • Saunas
      • Ice Baths
      • Parasols
      • Outdoor Showers
    • Business & Commercial
      • JacuzziĀ® Lodgeā„¢ Spare Parts
      • Chemicals
      • Hot Tubs
      • Air Source Heat Pumps
    • Filters
    • Accessories
      • Pillows & Headrests
      • Drinks Holders & Glassware
      • Cleaning Tools
      • Lifeā„¢ Spa Accessories
      • Steps & Handrails
      • Toys & Games
      • Aromatherapy & Scents
    • Parts
      • Jets
      • Plumbing
      • Electrics
      • Pumps
      • Speakers
      • ClearRay & UV Bulbs
      • Lights
      • Heaters
      • Switches
      • Sensors
      • Arctic SpasĀ® Parts
      • Balboa Parts
      • Gaskets
      • Topside Controls
    • New Arrival
    • Login

    Login

    Lost your password?

    Register

    Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.