Merlin 720 GPD reverse osmosis system

A tankless reverse osmosis system that doesn't need electricity or a pump.

in stock 1 pcs
Delivery by 23.4.2024
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Product description

Pentair PRF-RO tankless reverse osmosis system

The Pentair PRF-FO reverse osmosis system is a revolutionary system that eliminates the need for a tank, pump, or electricity. This makes it simple to install and extremely compact.

Pentair PRF-RO tankless reverse osmosis system diagram

Reverse Osmosis - a simple water filtration process

Reverse Osmosis is a process in which dissolved inorganic solids (such as salts) are removed from a solution (such as water). This is accomplished by household water pressure pushing the tap water through a semipermeable membrane. When household water pressure pushes water through the RO membrane and additional filters, such as sediment or carbon filters, the impurities are filtered out and subsequently flushed down the drain. What is left, is delicious, clean-tasting drinking water. 

Pentair PRF-RO tankless reverse osmosis system rear view

Compact yet powerful

Because reverse osmosis is a slow process, most systems use a tank to store pre-treated water which is then available for immediate use. This adds complexity and cost, and the tank must be maintained to keep water clean.  With the PRF-FO, a tank is not needed because it has an exceptionally fast flow rate, up to 1-1//2 liters per minute. And because it uses existing water pressure, an electric pump is not needed. This makes for a compact unit that is especially suitable for small homes or apartments where space is at a premium.

Pentair PRF-RO tankless reverse osmosis system front view

Reverse osmosis water on demand


Continuous flow means you always have filtered water when you want it. You aren't limited by a tank. That means you have an almost unlimited supply of pure filtered water for drinking, cooking, coffee, tea, ice, rinsing veggies, and even aquariums. And the tankless system is efficient, with a constant 29% recovery rate - meaning only 3 liters waste water for each liter of purified water. Tank systems can have a less than 10% recovery rate, meaning 10 liters of waste water for each liter of purified water.  

Advantages of the Pentair PRF-RO


RO filtration improves taste, odor and appearance of water by removing contaminants that cause taste and odor problems.


With the PRF-RO, you can cancel your water delivery service and stop purchasing cases of bottled water. Reverse Osmosis filtration provides “better-than-bottled water” quality water for just cents per liter.



The tankless system has no electrical parts or tank valves. Just replace the carbon filters annually and the reverse osmosis cartridges every 3 years.


The RO filters remove pollutants from water including nitrates, pesticides, sulfates, fluoride, bacteria, pharmaceuticals, arsenic and much more. The dual carbon filters remove chlorine and chloramines.


Max/min water flow
7,6 / 3,7 l/min
Max/min pressure
5,52 / 2,76 bar
Max/min water temperature
37,8 / 4,4 °C
43,3 x 51,7 x 24,6 cm
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about this product?
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Hi Team, I really like this particular system.
Is there anything it does not remove? I love it takes out fluoride! Few systems do.
For a house with two sink taps and two shower heads, do I need four of the above systems, please? Sorry, probably a silly question and thank you for your time.
Kind regards,
Margarita Novakova , 4.11.2023 15:00 1 reply
Hi Margartia

We wouldn't recommend it for a shower, as there would be insufficient pressure. You would need one unit for each sink or water tap. Don't worry, it's not a silly question :)
Sana Store , 6.11.2023 09:31

Information notice:According to the Act on Registration of Sales, the seller is required to issue a receipt to the buyer. The seller is also required to register the sales data online to the Financial Authority. In case of a technical problem, the data must be registered no later than 48 hours after the sale.