Twin Whole House Water Filter System | 10" x 4.5" for Small Households | WaterMark Certified (GT1-7WM)

Twin Whole House Water Filter System — 10" x 4.5" for Small Households, WaterMark Certified (GT1-7WM)

Whole-of-house filtration on 10" x 4.5" housings. Suits smaller households, units, cabins and tiny houses where the full 20" system is more than you need or there isn't the wall space for it.

Choose your configuration

Whole-house housings are shipped to you empty. Rather than leave you to work out which cartridges to buy, we've matched them for you — pick the option for your water source and it arrives ready for your plumber to fit.

• Complete — mains water ($422.50)
  System plus a 5 micron washable pleated sediment cartridge and a 5 micron coconut carbon block. Sediment first to protect the carbon, then chlorine, taste and odour reduction. The standard setup for town water.
• Complete — rain & tank water ($445.50)
  System plus a 5 micron washable pleated sediment cartridge and a 5 micron silver impregnated bacteriostatic carbon block. The silver treatment stops bacteria colonising inside the carbon itself, which is the common failure on tank water.
• Housing only ($319)
  The system on its own. Choose this if you already know the cartridges you want, or your plumber is specifying them.

Filtering rain, tank or bore water? Filtration alone does not make untreated water safe to drink — carbon does not kill bacteria, viruses or parasites. Tank and bore supplies need UV sterilisation as well. Talk to us before you order and we'll tell you honestly what your water needs.

What's in the box

• Twin whole house filter system with bracket pre-installed
• Opening spanner
• Instruction and warranty sheet
• Cartridges, on the two Complete configurations above

WaterMark certified

Certified to WaterMark Standard AS/NZS 3497. WaterMark certification is what the law requires before a licensed plumber can install a water filter system in Australia — so this system can be connected legally and to code.

Installation

This system must be installed by a licensed plumber. We're licensed plumbers ourselves — Wahoo Plumbing, QBCC 15256568, working the Sunshine Coast since 1997 — so if you're between Caloundra and Noosa or all of Moreton Bay area, we can quote the install and fit it properly, with a bypass so you still have water when it comes time to change cartridges. Anywhere else in Australia, any licensed plumber can fit it and the instructions come in the box.

Technical specifications

• Cartridge size: 10" x 4.5" — takes any standard cartridge, you are not locked into proprietary filters
• Ports: 1" female BSP inlet and outlet
• Pressure: 0 to 620 kPa
• Limit pressure: 500 kPa maximum
• Temperature: 0.5°C to 37.8°C
• UV resistant — can be installed in direct sun or shade

Cartridge changes

Plan on an annual change on mains water, sooner if you're on tank water or your pressure starts dropping off. The smaller 10" cartridges hold less than the 20" size, so if you're on heavy sediment they will need changing more often — worth considering the 20" system if that's your situation.

We stock the full replacement range for this system in 10" x 4.5" sediment and carbon.