



BT65 F15 Whole House Water Filter – 650,000L Capacity, Chlorine-Free
- 650,000 litres / up to 3 years per filter. No frequent cartridge changes.
- Reduces chlorine, chloramines, heavy metals and pesticides, while keeping natural minerals.
- Filters every tap, shower and appliance from one central system.
- DIY-friendly fitting, or use your own plumber.
Order today, dispatched within 1-2 working days. Fast UK delivery. Not the right fit? Return it within 30 days.

Product Description
The BT65 F15 filters your incoming mains water before it reaches your taps, showers, baths and appliances, giving you filtered water throughout the entire home from one central system.
Premium silver-impregnated coconut shell activated carbon and twin sediment filtration help reduce chlorine, unwanted tastes and odours, sediment and a range of other contaminants while retaining the naturally occurring minerals in your water.
With a capacity of up to 650,000 litres or around 3 years, the BT65 provides a long-lasting alternative to fitting separate filters around the home and is ideal for homes with 2-3 bathrooms. Need a higher-capacity system? Click here to view the BT65 high capacity.
About
Why Choose the BT65 F15 Whole House Water?
The BT65 F15 is perfect for homeowners seeking a reliable, long-lasting water filtration solution that ensures clean, great-tasting water throughout the entire house.
High Capacity
Covers up to 650,000 litres, suitable for households with 2–3 bathrooms.
Chlorine & Chloramine Removal
Effectively removes chlorine and chloramines, improving water taste and quality.
Comprehensive Contaminant Reduction
Reduces heavy metals, pesticides, herbicides, sediment, and other impurities.
Advanced Filtration Media
Utilises silver-impregnated granular activated carbon and twin sediment riser filters for optimal performance.
Long-Term Solution
Designed to provide clean water for up to 3 years, depending on water usage and quality.
Dimensions
Standard size compatible with most household plumbing systems
Further Information
Specifications
| Capacity | Up to 650,000 litres |
| Replacement Interval | Up to 3 years |
| Filtration Media | Silver-impregnated coconut shell granular activated carbon |
| Sediment Filtration | Twin sediment riser filters |
| Dimensions | 210mm wide × 545mm high |
| Vessel Volume | 13.32 litres |
| Suitable For | Homes with 2–3 bathrooms |
| Installation Point | Incoming mains water supply |
| Installation | Suitable for competent DIY installation; professional installation recommended |
| Fluoride Reduction | Optional fluoride-reduction media available |
| Minerals Retained | Yes |
| Fitting Kits | 15mm and 22mm options available |
| Capacity | Up to 650,000 litres |
| Replacement Interval | Up to 3 years |
| Filtration Media | Silver-impregnated coconut shell granular activated carbon |
| Sediment Filtration | Twin sediment riser filters |
| Dimensions | 210mm wide × 545mm high |
| Vessel Volume | 13.32 litres |
| Suitable For | Homes with 2–3 bathrooms |
| Installation Point | Incoming mains water supply |
| Installation | Suitable for competent DIY installation; professional installation recommended |
| Fluoride Reduction | Optional fluoride-reduction media available |
| Minerals Retained | Yes |
| Fitting Kits | 15mm and 22mm options available |
Common questions before you buy
Everything people usually ask before fitting a whole-house water filter.
Still unsure? Call 0116 276 3334.
What does the BT65 whole house water filter remove?
The standard BT65 uses silver-impregnated coconut shell activated carbon and twin sediment filtration to filter out:
- Chlorine and chlorine taste & odour
- Sediment and suspended particles
- Lead and selected heavy metals
- Trihalomethanes (THMs)
- Pesticides and herbicides
- Many volatile organic compounds (VOCs)
- Other adsorbable organic contaminants that can affect water taste, smell and quality
- Chloramine, where present, although reduction varies with flow rate, concentration and filter condition
The BT65 Fluoride Reduction model provides the same whole-house filtration with additional specialist media to reduce fluoride.
Both versions retain the naturally occurring dissolved minerals in your water and filter the supply to taps, showers, baths and connected appliances throughout the home.
Does the BT65 remove chlorine from shower and bath water?
Yes. Because the BT65 is installed on the incoming mains supply, it filters water before it reaches your showers, baths, taps and appliances.
How long does the BT65 whole house water filter last?
The BT65 has a capacity of up to 650,000 litres or around 3 years, depending on household water usage and incoming water quality.
Will a BT65 whole house water filter reduce water pressure?
No. The BT65 provides whole-house filtration without a reduction in water pressure when correctly sized and installed.
Can I install the BT65 whole house water filter myself?
Yes. A confident DIYer can install the BT65, with 15mm and 22mm fitting kits available. If you're unsure about your plumbing or installation position, we recommend using a plumber.
Does the BT65 whole house water filter remove limescale?
No water filter will prevent limescale in a hard water area (despite what some companies claim).
The BT65 filters unwanted contaminants but does not remove the minerals calcium and magnesium that cause hard water. For limescale prevention, use a water softener.
What size home is the BT65 suitable for?
The standard BT65 is ideal for many homes with around 2-3 bathrooms.
For properties with greater water demand, a higher capacity BT65 system is available.
What is the difference between a whole house water filter and a water softener?
A whole house water filter like the BT65 improves water quality by reducing chlorine, sediment and other unwanted contaminants. A water softener removes hardness minerals to prevent limescale.
The two systems can be used together.

