Description
A high-flow 3-stage Big Blue whole-house system — 5 micron sediment, GAC and carbon-block filtration on 1″ NPT ports — that reduces sediment, chlorine, and taste&odor across your whole home. Ships with a spare filter set.
Housing
10″ × 4.5″ Big Blue
Includes
2 sets (1 + spare)
A complete 3-stage whole-house system
This MyWaterClub triple-stage system connects to your home’s main water line and filters every tap in the house through three 10″ × 4.5″ Big Blue stages. The large-diameter housings and 1″ NPT ports with brass inserts keep pressure loss low, so you get strong whole-home flow while still getting real carbon contact time.
Water passes through the stages in order — sediment first to protect the carbon, then granular activated carbon, then a finer carbon block to polish taste and odor. It’s the natural step up from a 2-stage system when you want an extra dedicated carbon stage. Each housing has a pressure-release button for easy servicing, and the system ships pre-assembled on its mounting bracket with a housing wrench and a complete spare filter set.
The three stages
Stage 1
Sediment — 5 micron
Traps dirt, sand, silt, rust and other particles. Protects the two carbon stages downstream and extends the life of the whole system. (SED5-10BB)
Stage 2
GAC carbon — 25 micron
Granular activated carbon reduces chlorine, common tastes and odors, and many organic chemicals (VOCs) at high flow. (GAC-10BB)
Stage 3
CTO carbon block — 10 micron
A finer carbon block gives extra contact time to further reduce chlorine, taste and odor, and polish out finer particles for a clean finish. (CTO-10BB)
Key features
- ✓Three-stage whole-house filtration: sediment → GAC → carbon block
- ✓High-flow 10″ × 4.5″ Big Blue housings with 1″ NPT ports and brass inserts
- ✓Pressure-release buttons on each housing for easy, mess-free servicing
- ✓Ships pre-assembled on a mounting bracket, with a housing wrench included
- ✓Two complete filter sets included — one installed plus one spare
- ✓Uses standard Big Blue 10″ × 4.5″ cartridges — easy, low-cost replacements
- ✓Assembled in the USA from imported parts
Good to know before you install
- Connects to a 1″ NPT main line. A qualified plumber is recommended if you’re not comfortable working on house plumbing.
- Install cartridges in order — sediment in Stage 1, then GAC, then the carbon block — and always relieve system pressure before opening a housing.
- Best for municipal / city water. On untested well water, test first and add pre-treatment as needed.
- Protect from freezing and direct sun; max water temperature 100°F.
Specifications
| System type |
3-stage whole-house filtration system |
| Stages |
Sediment (5 µm) → GAC (25 µm) → CTO carbon block (10 µm) |
| Housing size |
10″ × 4.5″ (Big Blue) |
| Port size |
1″ NPT with brass inserts · pressure-release buttons |
| Housing color |
Blue with black caps |
| Included |
2 complete filter sets (1 installed + 1 spare), mounting bracket, housing wrench |
| Typical filter life |
~6–12 months per set* |
| Operating temperature |
Max 100°F · do not allow to freeze |
| Dimensions |
24 × 18 × 12 in |
| Weight |
~20 lb (320 oz) |
| Assembly |
Assembled in the USA from imported parts |
| Brand |
MyWaterClub |
| SKU |
WHS-3SGC-10BB-E |
*Filter life varies with your water quality, sediment load, and household usage. Replace sooner if flow drops or taste/odor returns.
Replacements & related
Replacement filter set
3-stage Big Blue set: Sediment + GAC + CTO (SGC-10BB)
Shop the set →
Scope note: This is a sediment-and-carbon filtration system for improving everyday water — it is not a certified microbiological purifier and does not soften water or remove dissolved minerals. Do not use it to make microbiologically unsafe water safe to drink; on an untested well or under a boil-water advisory, treat your water accordingly first.
Please note: Filter life and reduction performance depend on your water chemistry, pressure, and usage, so results vary from home to home. This product is not certified to treat water of unknown quality and is not a substitute for testing your water. Descriptions use general, qualified language and are not health claims. When in doubt, test your water or ask us and we’ll help you build the right stack.
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