Water purifier NZ families can use for instant hot, cold, and ambient water.
Enjoy municipal tap water through the RUHENS WHP-3700's three-stage filtration system, with Micro Carbon, NanoFACT Plus, and Post Carbon Block filters for better-tasting everyday drinking water.
Choose Your Plan
Pure water, your way
Whether you prefer to own your water purifier outright or enjoy the flexibility of a rental plan, we offer options that fit your needs. Both options include comprehensive warranty coverage.
- Outright Purchase
Own your water purifier outright with a one-time payment. Includes full warranty coverage and no monthly commitments.
- Flexible Rental
Start with a low monthly payment. Includes the machine, all filters, and filter replacement service.
- Warranty Protection
Comprehensive warranty coverage for your peace of mind, whether you choose to buy or rent.
Our Purifier
Meet the RUHENS Model WHP-3700
Your premium solution for instant purified water, hot or cold. Choose the ownership plan that's right for you.
The Ultimate Water Purifier
Enjoy pure, refreshing water exactly the way you like it with the RUHENS WHP-3700. This sleek and efficient water purifier delivers instant hot, cold, and ambient water at the touch of a button, featuring an advanced filtration system and user-friendly design.
See all features & specifications →Buy Outright
$1099one-time
Own your premium purifier and enjoy lasting peace of mind with our Standard Manufacturer Warranty.
- Full ownership of the purifier.
- Option for convenient filter subscription.
- No monthly payments or contracts.
Rent Monthly
$59/month
36-month contract. Enjoy peace of mind with our all-inclusive plan: machine, filters, and service are all covered.
- Low upfront cost - start for just $59.
- All-inclusive: machine, filter replacements covered.
- Hassle-free bi-annual filter replacements.
Water purifier NZ
Filtered hot, cold, and ambient water for NZ homes
WaterWise helps households compare water purifier price, rental, filter replacement, and Auckland installation questions before choosing the RUHENS WHP-3700.
Home water purifier NZ
A compact purifier for municipal tap water, designed for families who want better-tasting water and simple filter replacement.
Hot and cold water dispenser
Instant cold, ambient, and hot water from one unit, with a boost mode for near-boiling water and a child safety lock.
Rental or outright purchase
Choose a one-time purchase or a monthly rental plan that includes filters during the rental service.
Auckland installation support
Local pickup, advice, and optional professional installation support from WaterWise in Glenfield, Auckland.
Answers NZ households usually need
Choosing a purifier is easier when the water source, product type, price, filter schedule, and local service options are all clear before checkout.
- What water source is the RUHENS WHP-3700 designed for?
- It is designed for municipal tap water. Rainwater, bore water, underground water, and untreated sources require appropriate pre-treatment and water-quality checks before use.
- Does it filter and dispense hot water?
- Yes. The RUHENS WHP-3700 combines three-stage filtration with hot, cold, and ambient dispensing, including hot water boost up to about 95°C.
- Can I buy replacement filters?
- Yes. WaterWise sells genuine RUHENS WHP-3700 Micro-carbon, Nano-fact, and Post-carbon replacement filters with 6-12 month replacement cycles.
Our Story
At WaterWise, we are passionate about providing New Zealand homes and businesses with access to pure, clean, and great-tasting water. Our mission is to enhance your health and well-being through innovative water purification technology and dedicated service.
WaterWise is proudly operated by Save Zone Limited, trading as Hi Mart. Since 1998, Hi Mart has been a leading New Zealand retailer, importing and distributing high-quality electronics and appliances from Korea. This rich history means WaterWise is built on a foundation of trust, experience, and a commitment to bringing the best in technology to our customers.