RKIN Whole Home Reverse Osmosis System, WHRO13 and WHRO46
A whole house reverse osmosis set with a 300 or 500 gallon holding tank, $12,334.18 to $13,084.18 on RKIN's store on 2026-10-14.
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QUICK VERDICT
RKIN's Whole Home Reverse Osmosis System pairs an RO module with a 300 or 500 gallon holding tank, a 20 gallon pressure tank and carbon and AlcaPure filters, sized by bathroom count. Past that parts list, RKIN publishes no output rate, dimensions or power needs.
- Best for
- Households that want reverse osmosis water beyond a single faucet, have room for a 300 or 500 gallon holding tank and a plumber lined up, and are ready to share their water report with RKIN before ordering.
- Skip if
- You need a daily output, reject water figure, power requirement or footprint before you size a system; you want a written warranty term that names the RO module and pumps; you want a product certification; or you only need reverse osmosis at the kitchen tap, which RKIN's countertop and undersink units cover.
- Tier
- Ultra-premium
The Whole Home Reverse Osmosis System is RKIN's reverse osmosis set for a whole house, sold on RKIN's own store by RKIN Water Systems of Fort Myers, Florida. It comes in 2 sizes picked by bathroom count: the WHRO13 for 1 to 3 bathrooms with a 300 gallon holding tank at $12,334.18, and the WHRO46 for 4 or more bathrooms with a 500 gallon tank at $13,084.18. The WHRO46's SKU reads RKIN-WHRO4. Who builds the components, and where, is not published.
The RO module holds the membrane, an electronic controller, a booster pump and a 5 micron sediment filter on a powder coated frame. The holding tank comes with a 20 GPM delivery pump, inline pump control, a 20 gallon pressure tank and a float switch. RKIN lists the carbon filter as a pre filter on municipal supply and a post filter on well water.
That list is the entire spec sheet. The product page has 7 tabs, among them Tech Specs, Maintenance and Shipping & Warranty, and every one is empty. RKIN publishes no daily output in gallons, no reject water volume, no feed pressure range or feed water limits, and no dimensions, floor space or operating weight for either size. The pumps and controller run on electricity, and RKIN gives no voltage, amperage or circuit for them. Membrane and cartridge part numbers, prices and change intervals are missing too, and RKIN claims no certification or contaminant test report for this system.
Well water calls for a conversation first. RKIN says extra pretreatment may be needed to keep contaminants from damaging the membrane, and it asks well water buyers to contact a representative before they order. Its 30 minute consultation with a whole home specialist is free.
The warranty for this model is not spelled out. RKIN's whole house warranty page gives a lifetime warranty on covered items such as tanks, housings, valves and fittings and 7 years on control valves, and it never mentions reverse osmosis. Store returns run 30 days for new, unused products in original packaging with an RMA number, with return shipping paid by the buyer. The shipping policy does not say how a 300 or 500 gallon tank is delivered.
Households that want reverse osmosis water beyond a single faucet, have room for a 300 or 500 gallon holding tank and a plumber lined up, and are ready to share their water report with RKIN before ordering.
You need a daily output, reject water figure, power requirement or footprint before you size a system; you want a written warranty term that names the RO module and pumps; you want a product certification; or you only need reverse osmosis at the kitchen tap, which RKIN's countertop and undersink units cover.
Specifications
Most often compared with
Where this fits
RKIN WHRO13 (1 to 3 bathrooms, 300 gallon holding tank) and WHRO46 (4 or more bathrooms, 500 gallon holding tank) cross-shops across several editorial surfaces on this site: the full brand catalog and the in-depth guides for its category.
RKIN WHRO13 (1 to 3 bathrooms, 300 gallon holding tank) and WHRO46 (4 or more bathrooms, 500 gallon holding tank) - buyer FAQ
How much does the RKIN Whole Home Reverse Osmosis System cost?
On RKIN's own store on October 14, 2026, the WHRO13 for 1 to 3 bathrooms was $12,334.18 and the WHRO46 for 4 or more bathrooms was $13,084.18. Each sat beside a struck regular price, $16,432.23 and $17,432.23, with no sale end date shown. Both sizes were in stock. We did not open checkout, so shipping, tax and installation pricing are unknown.
What comes with the system?
RKIN's parts list has 4 headings. The reverse osmosis module carries the membrane, an electronic controller, a booster pump and a 5 micron sediment filter. The holding tank, 300 or 500 gallons by size, comes with a 20 GPM delivery pump, a 20 gallon pressure tank and float switch control. A carbon filter and an AlcaPure post filter complete it.
What power, space and water conditions does it need?
RKIN doesn't say. A booster pump, a 20 GPM delivery pump and an electronic controller all need electricity, yet no voltage, amperage or circuit is published. Neither are dimensions, floor space, drain needs or feed water limits. For well water, RKIN warns that extra pretreatment may be required to protect the membrane and asks buyers to contact a representative before they order.
What warranty and return terms apply?
This product page gives no warranty term. RKIN's separate whole house warranty page offers lifetime coverage on items such as tanks, housings, valves and fittings, plus 7 years on control valves, and it never mentions reverse osmosis. Returns follow the store policy: 30 days for new, unused products in original packaging with an RMA number, and the buyer pays return shipping.
RKIN Whole Home Reverse Osmosis System, WHRO13 and WHRO46
$12,334.18 to $13,084.18 · Verified 2026-10-14
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