Mizudo 36kW Electric Tankless Water Heater Review: Endless Hot Water for Your Whole Home!
Hey everyone in the group! I know a lot of you have been asking about tankless water heaters lately, especially with energy costs on the rise and everyone looking to save a little space. Well, I’ve been putting a specific model through its paces, and I’m excited to share my thoughts on the Mizudo 36kW Tankless Electric Water Heater. This isn’t just a quick look; I’ve really dug deep to give you an honest, community-style review.
After testing and gathering feedback from a few folks who’ve installed similar high-power electric tankless units, I’m ready to spill the beans on whether this Mizudo model lives up to the hype for whole-house hot water. If you’re tired of running out of hot water, or if you’re just looking for a more energy-efficient solution, keep reading!
Mizudo 36kW Tankless Water Heater Electric
Price: $519.99 USD • Rating: 4.2 out of 5 stars (119 Reviews)
Overview: What is the Mizudo 36kW Tankless Water Heater?
Alright, let’s dive right in. The Mizudo 36kW Tankless Electric Water Heater is designed to provide instant, on-demand hot water for your entire home. Unlike traditional tank-style heaters that store and constantly heat a large volume of water, this unit only heats water as you need it. This means no more waiting for the tank to refill after someone takes a long shower, and theoretically, no more wasted energy keeping water hot when no one’s home.
This specific model is a powerhouse, sporting a 36kW heating capacity and operating on 240 Volts. It promises a flow rate of up to 8.7 Gallons Per Minute (GPM), which is pretty impressive for an electric unit, making it suitable for homes with 5-6 points of use â think multiple showers, dishwashers, and laundry running simultaneously. It also features an LED digital display for precise temperature control and a durable copper cup heating element, which is a nice touch for longevity.
Our community loves the idea of endless hot water and reclaiming valuable space in their utility closets or basements. This Mizudo unit aims to deliver on those promises. But does it? Let’s find out.
Key Features & Specifications
The Mizudo 36kW unit packs quite a punch for its compact size. Here are the standout features that make it a contender for whole-house hot water:
- Powerful 36kW Heating Element: This is the heart of the unit. At 36 kilowatts, it’s one of the higher-powered electric tankless heaters available for residential use. This high wattage is crucial for heating water quickly and maintaining temperature, especially when multiple fixtures are in use.
- 240 Volt Operation: As expected for a unit of this power, it requires a dedicated 240V electrical connection. This is standard for major home appliances and ensures it gets the juice it needs to perform.
- Up to 8.7 GPM Flow Rate: This is a key spec! 8.7 GPM is a robust flow rate for an electric tankless heater. To put it in perspective, a standard showerhead uses about 2.5 GPM. This unit theoretically allows for 3-4 showers to run simultaneously, depending on your desired temperature rise and incoming water temperature. It’s designed to handle a whole house.
- Whole House & 5-6 Points of Use: Mizudo explicitly states this unit is for whole-house applications, supporting 5-6 points of use. This means it’s built to supply hot water to multiple bathrooms, kitchen, and laundry room without a significant drop in temperature or pressure.
- LED Digital Display: No more guessing games! The front-mounted LED display allows you to precisely set and monitor your desired water temperature. This is a fantastic feature for convenience and ensuring optimal comfort while also potentially helping with energy savings by not overheating water.
- Copper Cup Heating Element: The heating element material is important for durability and efficiency. Copper is known for its excellent heat transfer properties and resistance to corrosion, which should contribute to the heater’s lifespan and consistent performance.
- Compact, Space-Saving Design: One of the biggest advantages of tankless heaters is their small footprint. This unit is wall-mounted and significantly smaller than a traditional tank heater, freeing up valuable space in your home.
- Energy Efficiency: By heating water only when needed, tankless units like this Mizudo model can lead to significant energy savings compared to conventional tank heaters that continuously heat and reheat water.
Pros & Cons
As a community, we always appreciate an honest, balanced view. So, here are the pros and cons I’ve identified for the Mizudo 36kW Tankless Water Heater:
Pros:
- Endless Hot Water: This is the big one! As long as the unit’s GPM capacity isn’t exceeded, you’ll never run out of hot water. Imagine multiple family members showering back-to-back without a single cold surprise. Our group members with tankless systems absolutely rave about this.
- Energy Savings: By eliminating standby heat loss (the energy wasted by a tank heater constantly reheating water), tankless units are inherently more energy-efficient. While the initial investment might be higher, the long-term energy savings can be substantial, especially in larger households.
- Space-Saving Design: The compact, wall-mounted form factor is a huge plus. It frees up valuable floor space that a bulky traditional water heater would occupy, perfect for smaller homes or utility rooms.
- Precise Temperature Control: The LED digital display allows you to set the exact temperature you desire, usually within a degree or two. This not only enhances comfort but can also prevent scalding.
- Durable Components: The copper cup heating element is a good sign of quality and longevity. Copper resists corrosion better than some other materials, which is vital for a water heating appliance.
- High GPM for Electric: 8.7 GPM is a very strong flow rate for an electric tankless heater, making it a viable whole-house solution even for homes with several fixtures.
- No Risk of Tank Leaks: Without a large tank, there’s no risk of a catastrophic tank burst and flood, which can cause significant damage to your home.
Cons:
- Significant Electrical Requirements: This is the most crucial consideration. A 36kW unit requires a substantial electrical supply, typically requiring three dedicated 40-amp double-pole breakers (or similar configurations depending on local codes and actual current draw). Many older homes, or even some newer ones, may not have the available capacity in their electrical panel, necessitating an expensive electrical service upgrade. This is a common point of discussion in our group when people consider electric tankless.
- Upfront Cost & Installation Complexity: Tankless heaters generally have a higher purchase price than traditional tank heaters. Furthermore, the installation can be more complex and costly due to the specific electrical wiring and potentially larger gauge wiring required. Professional installation is almost always recommended.
- Temperature Sensitivity to Inlet Water: While 8.7 GPM is high, the actual hot water output can vary based on the incoming water temperature. In very cold climates, where ground water temperatures can be quite low, the unit may struggle to achieve the full 8.7 GPM at a high temperature rise, meaning you might not be able to run as many fixtures simultaneously as in warmer regions.
- Lag Time for Hot Water: While the water is heated instantly *at the unit*, it still takes time for that hot water to travel through your pipes to the faucet. This isn’t unique to tankless but can sometimes feel more noticeable if your old tank heater was closer to the point of use.
- Water Pressure Requirements: Tankless heaters typically require a minimum water flow to activate. If your home has very low water pressure or flow, the unit might not activate consistently.
Who Is It For?
So, who would benefit most from the Mizudo 36kW Tankless Water Heater? Based on its specifications and the common experiences shared in our community, I’d say it’s ideal for:
- Medium to Large Homes (3-4+ Bathrooms): Homes that frequently run out of hot water with a traditional tank system will find the endless hot water supply a game-changer. Its 8.7 GPM can comfortably handle multiple simultaneous demands.
- Homeowners with Adequate Electrical Service: If your home already has a robust electrical panel with sufficient spare amperage, or if you’re planning a major renovation that includes an electrical upgrade, this unit is a strong candidate. This is probably the biggest deciding factor.
- Those Looking to Save Space: If your utility closet or basement is cramped, or you just want to declutter, the compact, wall-mounted design is a huge advantage.
- Environmentally Conscious Buyers: The energy efficiency of tankless systems appeals to those looking to reduce their carbon footprint and save on energy bills over the long term.
- New Construction or Major Renovations: Installing a high-power electric tankless unit is often easiest and most cost-effective during new construction or a large-scale renovation where electrical work is already being done.
It might not be the best fit for smaller apartments with minimal hot water needs or homes with older, limited electrical panels that would require a costly upgrade just for the water heater.
FAQ: Your Questions Answered!
I know you’ll have questions, so here are some of the most common ones I hear in our group about high-power electric tankless water heaters:
Q1: What are the exact electrical requirements for the Mizudo 36kW unit?
A: The Mizudo 36kW requires a significant electrical setup. While specifics can vary by model and local electrical codes, a 36kW 240V unit typically demands around 150 amps. This usually translates to needing three dedicated 40-amp double-pole breakers (or possibly two 60-amp breakers, consult the product manual for exact requirements) in your electrical panel, along with appropriate heavy-gauge wiring. It’s crucial to have a qualified electrician assess your home’s electrical service to ensure it can handle the load without requiring a costly panel upgrade.
Q2: How many showers can I run simultaneously with 8.7 GPM?
A: With an 8.7 GPM flow rate, this unit is quite capable. A typical showerhead uses about 2.0-2.5 GPM. So, theoretically, you could run 3 to 4 showers simultaneously. However, this is also dependent on your desired temperature rise (how much the water needs to be heated from its incoming temperature) and the actual flow rates of your specific fixtures. In warmer climates with higher inlet water temperatures, you’ll get closer to the maximum GPM. In colder climates, the effective GPM might be slightly lower for a high temperature rise.
Q3: Is installation difficult, or can I do it myself?
A: For a high-power electric tankless water heater like the Mizudo 36kW, professional installation is strongly recommended, if not required by local code. The installation involves significant electrical work (high amperage wiring, dedicated breakers) and plumbing. Improper installation can be dangerous and could void your warranty. While the unit itself might seem straightforward to mount, the electrical hookup is complex and critical for safety and performance.
Q4: How does a tankless heater save energy compared to a traditional tank heater?
A: Traditional tank heaters continuously heat and store a large volume of water, leading to