Home Master TMULTRA RO Under Sink Reverse Osmosis Review

Home Master TMULTRA Undersink Reverse ReviewThe Home Master TMULTRA under sink reverse osmosis (RO) system is a compact, easy to install filter system that in addition to the standard filter that you will find on most RO systems includes an addition iron filter to remove excess iron from your water and also includes a UV filter to kill off microorganisms.

The system removes 98% of the solids, chemicals and metals in the water, while the UV light kills off 99.9% of microorganisms. For a full list of contaminants removed follow this link.

The TMULTRA system has recently been upgraded to include a larger bore pipe, this increases the speed that the system filters water. The system is designed to deliver 50 gallons of pure water a day, this output can be affected by water pressure and temperature – lower water pressure and lower water temperatures will reduce output, while higher water pressure and warmer water can increase the output.

The system has an efficiency ratio of 4:1, this means that for every 1 gallon of pure water that is produced 4 gallons of water are used to backflush the system. The system water efficiency can be increased by adding a permeate pump. This permeate pump reduces the amount of waste water to 1 gallon for every gallon of pure water produced. The permeate pump also increases the output of the system from 50 gallons a day to 75 gallons per day.

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Filtration System Design

This system uses a modular filter design. This modular system makes the change of the filter elements easier. Each of the filter elements is contained in its own housing, which is changed with the filter. This removes a problem that used to occur when the filter was an element contained within a housing. Even though the filter was replaced, some of the debris that had been removed by the filter remained in the housing. This reduced the life of the filter and at the same time damaged the housing. There is no need for any tools when replacing the filter elements, you simply pull the old one and push in the new filter.

The UV bulb should be replaced every year when you replace your filters. Every third year the whole UV unit should be replaced

Changing the RO membrane, which requires replacing every 3 to 5 years, is slightly more involved than the filter elements but only take a few minutes. Full membrane change instructions can be seen by following this link.

Water Efficiency

The Home Master TMULTRA is average when it comes to water efficiency. To produce 1 gallon of pure drinking water, 4 gallons of water are used to backflush and keep the membrane clear. This waste water can be used for watering gardens etc., but does require some additional plumbing to enable this.

Adding a permeate pump to the system increases the water efficiency greatly. With a permeate pump the system produces 1 gallon of waste water for every gallon of pure water produced. The daily output of the system is also increased to 75 gallons.

Ease of Installation 4.5/5

Thanks to the modular design and color coded water pipes, this is an easy system to install. Someone with basic DIY skills should be able to install the system in about an hour. The only tools needed are a drill, a crescent wrench and a Philips screwdriver, everything else (including Teflon tape) is included in the kit. The full installation instructions and owner’s manual (found here) does go into great detail about how to connect the feed pipes and drainage pipes over 7 pages, but it is one of those things that is more difficult to explain than it is to do.

The system is designed to fit in most under counter cabinets but can be installed wherever there is a convenient water supply and drain.

Home Master TMULTRA RO Under Sink Reverse Osmosis ReviewThere is a series of 6 videos that Home Master have made to show an installation of the basic system. it is will help to take a look at these videos before commencing the installation. The videos are just for the basic system, so to install the UV light you need to look at section 8 of the installation instructions with regard to the 110v electric supply including safety instructions. 

Video 1 – Introduction

Video 2 – Faucet installation

Video 3 – Fitting the feed water adaptor

Video 4 – Fitting the drain saddle

Video 5 – Mounting the RO unit

Take note of the need to have enough room to remove the unit for annual maintenance.

Video 6 – Final assembly and starting the unit up

Pros

Water output per day – 50 gallons of pure water

Filter life – 2,000 gallons or 1 year

Removes up to 98% of dissolved solids, chemicals & metals – click this link for details

Modular filter design – filter and filter container are one, pull-out, push-in, unit

Removes Iron

Kills off microorganisms using UV light

Membrane life – 3 to 5 years

5 year limited manufacturer’s warranty

Cons

While the system itself works well, some of the information that Home Master have distributed to some websites suggest that this system includes a permeate pump. It does not.

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Conclusion 4.7/5

During the Home Master TMULTRA review we found the system is of the high quality that one can expect from Home Master. With an iron pre-filter, this is an ideal system for both town water or well water, especially if the water supply contains higher than average amounts of iron which can damage the RO membrane.

Home Master have made maintenance of the system easy as well. Instead of having to order each replacement filter separately, they have assembled kits that are ordered as one.

In some areas where water usage and/or water cost is a consideration, a system with a permeate pump, such as the Home Master TMHP may be worth considering.

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