This 36-45 GPM backwashing whole house carbon water filter is built for large and estate homes with high peak demand. The 2815BW-9.0-CC is a high-flow, backwashing whole house catalytic carbon water filter designed for 36 to 45 GPM and households with up to 10 showers, including multi-head showers.
It reduces chlorine taste and odor, helps reduce chloramines and hydrogen sulfide, and filters sediment as water flows through the system. The Fleck 2815 backwashing control valve automatically cleans and regenerates the carbon bed, helping maintain performance and flow over time.
Sizing and Flow: How to Choose the Right System
Start with peak flow, not household size. This system is recommended for 36 to 45 GPM, which is ideal when multiple bathrooms, showers, and appliances can run simultaneously.
Use this quick sizing method:
- List the fixtures that can run simultaneously (showers, tubs, laundry, dishwasher, hose bibs).
- If you have multi-head showers, count them as higher demand than a standard shower.
- Choose a system that matches or exceeds your estimated peak demand so you keep a strong flow during busy times.
- If your peak demand consistently exceeds 45 GPM, consider increasing capacity or implementing a parallel setup to meet demand.
What’s Included in the 36-45 GPM Backwashing Whole House Carbon Water Filter?
- Backwashing whole house carbon filtration system (main-line installation)
- Fleck 2815 backwashing control valve with 1.5-inch FNPT ports
- Structural polyglass tank
- 0 cu ft catalytic carbon (listed as 243 lbs.)
- Whole house system assembly instructions
What you need to install
- A spot on the main line with enough clearance for the tank height and service access
- Plumbing fittings to adapt to your pipe size and install preferred shutoffs or unions
- A nearby power source for the control valve
- A drain line connection for the backwash discharge (confirm routing to an appropriate drain)
- Optional but recommended: a basic water test or known water conditions (city vs well, odor issues, sediment)
Specifications for the 36-45 GPM Backwashing Whole House Carbon Water Filter
| Spec | Value |
| Model | 2815BW-9.0-CC |
| Recommended flow | 36 to 45 GPM |
| Media amount | 9.0 cu ft (243 lbs.) |
| Media type | Catalytic carbon (listed as coconut shell) |
| Maximum capacity | 1,181,250 gallons |
| Tank size | 24 in x 72 in |
| Overall dimensions | 81 in (H) x 24 in (D) |
| Control valve | Fleck 2815 backwashing control valve |
| Connection size | 1-1/2 in FNPT |
| Port size | 1-1/2 in ports |
| Materials | Noryl, polyglass |
| Carbon bed life | 3 years (most residential applications) |
| Shipping weight | Carbon weight is listed as 243 lbs.; packaged shipping weight varies by pallet and materials |
| Backwash rate | Confirm on your install sheet and site conditions (drain routing and water conditions affect requirements) |
Maintenance Schedule for the 36-45 GPM Backwashing Whole House Carbon Water Filter
This is a low-touch system because it backwashes automatically; however, periodic checks help maintain optimal performance.
- First week after install: Check fittings and drain line routing for leaks during a backwash cycle.
- Monthly: Quick visual check of the drain line and control valve area to confirm everything is secure.
- Every 6 to 12 months: Confirm the backwash schedule still matches your household routine and water conditions.
- Ongoing performance checks: If taste, odor, or flow changes significantly, inspect for unusual water conditions and confirm the valve is cycling correctly.
- Typical media replacement: Catalytic carbon is commonly replaced around every 3 years in most residential applications, depending on water quality and usage.
FAQ for the 36-45 GPM Backwashing Whole House Carbon Water Filter
Q: Who is this carbon system designed for?
A: Large or estate homes that need high flow, especially households with heavy simultaneous use and up to 10 showers.
Q: What does this backwashing carbon system reduce?
A: It is listed to reduce chlorine taste and odor, chloramines, hydrogen sulfide, chemical contaminants, and sediment.
Q: Why does backwashing matter?
A: Backwashing rinses trapped sediment and regrades the carbon bed, helping maintain performance and flow over time.
Q: Is this system suitable for city water?
A: Yes. It is commonly used when the goal is better taste, odor, and chemical reduction at the whole-home level.
Q: Is this system good for well water?
A: It can be, especially for taste and odor concerns like hydrogen sulfide, but well water varies. Many well setups pair filtration with disinfection if microbial protection is needed.
Q: Does this system remove bacteria?
A: No. This filter works as a chemical reduction. For microbial protection, consider adding a UV disinfection system.
Q: Will it soften water and remove scale minerals?
A: No. Carbon filtration targets taste, odor, and certain chemicals. Hardness minerals are typically addressed with water softening or scale-focused solutions.
Q: Will this reduce water pressure?
A: When properly sized, it is designed for high flow. Pressure or flow issues often arise from undersizing, plumbing restrictions, or abnormal conditions that require troubleshooting.
Additional Systems to Consider:
Whole House system assembly instructions included with this system.
