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Water Heating & Purification Systems

Water Heating & Purification Systems

High-efficiency tankless heaters and smart RO systems

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Save $100.00MIZUDO Megaflo Smart 1200GPD Reverse Osmosis Water Filter
MIZUDO Megaflo Smart 1200GPD Reverse Osmosis Water Filter Sale price$899.99 Regular price$999.99
Save $170.00MIZUDO Megaflo Smart Mini 1000GPD Reverse Osmosis Water Filter
Save $100.00MIZUDO Megaflo Smart Mini 800GPD Reverse Osmosis Water Filter
Save $150.00MIZUDO Pureflo 400GPD Reverse Osmosis Water Filter
MIZUDO Pureflo 400GPD Reverse Osmosis Water Filter Sale price$299.99 Regular price$449.99
Save $190.00MIZUDO Pureflo 600GPD Reverse Osmosis Water Filter
MIZUDO Pureflo 600GPD Reverse Osmosis Water Filter Sale price$309.99 Regular price$499.99
Mizudo 800GPD tankless reverse osmosis system with smart WiFi app control and instant hot water faucet
Save $212.00Non-Condensing 4.0 GPM 90,000 BTU -Indoor Natural Gas/Propane Tankless Water Heater White
Save $300.99Non-Condensing 5.1 GPM 120,000 BTU -Outdoor Natural Gas/Propane Tankless Water Heater White
PCF Filter for Mizudo Pureflo & Megaflo Mini Reverse Osmosis Water Filter, Tankless Under Sink RO Water Filtration System
PCF Filter, Replacement for MIZUDO Megaflo 800GPD and Megaflo 1000GPD Reverse Osmosis System
Remineralization Filter for Reverse Osmosis System, MIZUDO 12 Months Alkaline Water Filter System Under Sink, 10-inch PH Balance and Restore Minerals Filter for RO System
RO Filter for Mizudo Megaflo Mini 1000G Reverse Osmosis Water Filter, Tankless RO Water Filtration System Under Sink
Cast aluminum elements inside a high-efficiency tankless water heater

SCALE-RESISTANT CORE

Featuring heavy-duty cast aluminum elements that eliminate localized hot spots. Enjoy peak thermal efficiency and an extended lifespan in severe hard water zones—zero descaling required.

Color-coded top panel tubing connections on a Mizudo tankless RO system

FOOLPROOF ROUTING

Color-coded, push-to-connect ports instantly lock your tubing for a 100% leak-proof seal. Skip the expensive plumber and secure your under-sink setup in minutes.

Water Filter Reviews

FAQs & Support

Expert buying guides, installation requirements, and maintenance specs.

Tankless Water Heaters: Tech & Installation

Do cast aluminum water heaters really stop hard water scale?

Yes. They significantly reduce scale buildup compared to traditional copper heaters.

Traditional copper elements heat up too quickly in concentrated areas, causing the calcium in hard water to crystallize instantly. Cast aluminum solves this through thermal engineering:

  • Even Heat Distribution: The massive aluminum block acts as a heat sink, eliminating the extreme "hot spots" where scale forms fastest.
  • Water/Electricity Separation: Water flows through seamless channels cast directly into the metal, never touching exposed coils.
  • Actionable takeaway: If your home has hard water, choosing cast aluminum means fewer acid flushes and a longer unit lifespan.
What size wire and breaker do I need for an electric tankless water heater?

It strictly depends on the kW (kilowatt) rating of the unit you purchase. Electric tankless heaters draw substantial amperage and cannot be plugged into a standard wall outlet.

For safe, NEC-compliant installation, you generally need:

  • For an 11kW Unit: Typically requires one dedicated 60-Amp double-pole breaker and 6 AWG copper wiring.
  • For a 27kW Unit: Typically requires three dedicated 40-Amp double-pole breakers and three sets of 8 AWG copper wiring.
  • Important Notice: Always consult a licensed electrician to verify your home's main electrical panel has sufficient total capacity (usually 200A or higher) before purchasing a whole-home electric unit.
Are your tankless water heater fittings compatible with US plumbing codes?

Yes. All Mizudo water heaters feature standard NPT (National Pipe Thread) connections.

You will not need obscure adapters. Depending on the model, the water inlet/outlet will be either 1/2" NPT or 3/4" NPT, seamlessly integrating with standard US residential plumbing. Furthermore, the units are evaluated against CSA standards for North American electrical and plumbing compliance.

Reverse Osmosis (RO) Systems: Operation & Maintenance

Can I connect a tankless RO system to my refrigerator ice maker?

Yes, but we strongly recommend adding an inline mini-pressure tank.

Here is why: Refrigerator solenoid valves require a sudden, sustained burst of water pressure (typically 35-40 PSI) to trigger the ice maker. Because tankless RO systems generate pressure on-demand via an internal pump, a slight delay in line pressure occurs.

  • The Solution: Installing a small 1-to-2-gallon pressure buffer tank on the line running to your fridge ensures instant, high-pressure water delivery, preventing ice maker malfunctions and strange clicking noises.
How much wastewater does a tankless RO system produce?

Mizudo systems achieve an ultra-efficient 1.5:1 or 2:1 pure-to-drain ratio.

Traditional passive RO systems waste an enormous amount of water, often draining 3 to 4 gallons for every 1 gallon purified. By utilizing an integrated smart micro-computer and internal DC booster pump, our tankless design optimizes membrane feed pressure.

  • The Result: You get up to 2 gallons of pure drinking water for every 1 gallon sent to the drain, drastically reducing your utility bills while maintaining the necessary cross-flow to flush contaminants.
How often do I need to change the RO filters and how much do they cost?

Filter replacements are affordable and required only 1-2 times per year, depending on your local water quality.

  • PCF (Pre-Carbon Filter): Replace every 6 to 12 months. This protects the RO membrane by filtering out large sediments and chlorine.
  • RO Membrane: Replace every 12 to 24 months. This is the heavy-duty barrier that removes heavy metals and micro-contaminants.
  • DIY Replacement: Our twist-and-pull modular cartridges allow you to replace filters in under 5 seconds without shutting off your home's main water valve or calling a plumber.