If you’re looking for a 40-gallon electric smart water heater that combines efficiency with cutting-edge technology, there are some excellent options currently available.
1. Rheem Gladiator 40 Gal. Smart Electric Water Heater
- Price: Approximately $619
- Features: This model stands out for its leak detection and auto shutoff capabilities, which can help prevent water damage. It also has a 5500-watt double element for fast water heating and a 12-year warranty—great for peace of mind.
- Smart Features: The Gladiator series includes Wi-Fi connectivity, allowing you to control the temperature, monitor energy usage, and receive alerts for any issues directly from a mobile app(
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2. Rheem Performance Platinum 40 Gal. Hybrid Electric Heat Pump
- Price: Currently on sale for $1,399 (regularly $1,599)
- Features: This hybrid model is known for its high efficiency, combining traditional electric heating with heat pump technology. It can cut your energy consumption by up to 70% compared to standard electric models. It also features leak detection, auto shutoff, and smart Wi-Fi controls.
- Smart Features: The Performance Platinum series is compatible with the Rheem app, letting you manage and schedule hot water production, track energy savings, and get system alerts(
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Both options are great depending on your needs—if you’re looking for budget-friendly smart features, the Gladiator is excellent. However, if you’re aiming for maximum energy efficiency and long-term savings, the Performance Platinum Hybrid might be the better investment.
These models are available at Home Depot, and both have installation services available if you need professional help.
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When it comes to tankless water heaters, several top brands consistently outperform the rest, offering a mix of efficiency, durability, and features. Here are the best options based on performance, customer feedback, and energy efficiency:
1. Rinnai RUR199iN (Natural Gas)
- Flow Rate: Up to 11 GPM
- Energy Efficiency: 96%
- Best For: Large homes with high hot water demands
- Key Features: Rinnai’s RUR series offers recirculation technology for faster hot water delivery, reducing wait times. It also has Wi-Fi connectivity for easy temperature control and diagnostics via a smartphone app.
- Why It Stands Out: The high flow rate makes this ideal for households that need hot water in multiple locations at once (e.g., showers, dishwashers). It’s one of the most powerful and efficient gas models on the market.
2. Takagi T-H3-DV-N (Natural Gas)
- Flow Rate: 10 GPM
- Energy Efficiency: 93%
- Best For: Cold climates or larger homes
- Key Features: Takagi is known for its excellent temperature control and durability. This unit also offers built-in safety features like overheat and freeze protection.
- Why It Stands Out: Takagi excels in cold climate performance, making it a top choice in regions with low ambient temperatures. It’s also compatible with both residential and commercial setups.
3. EcoSmart ECO 27 (Electric)
- Flow Rate: 6.5 GPM (at 35°F rise)
- Energy Efficiency: 99%
- Best For: Smaller homes or apartments
- Key Features: A compact and space-saving design, the ECO 27 is perfect for those who want an affordable, electric solution. It features self-modulating technology, which only heats the water when needed, saving energy.
- Why It Stands Out: The energy savings and lower upfront cost make it one of the best electric options, especially for homes with moderate hot water needs.
4. Rheem RTEX-18 (Electric)
- Flow Rate: 4.4 GPM
- Energy Efficiency: 99%
- Best For: Point-of-use or smaller homes
- Key Features: This model provides consistent temperature control with external digital thermostats and adjustable settings for precision. Its compact size and easy installation are big perks.
- Why It Stands Out: Rheem’s affordability and reliability make this a great entry-level electric tankless water heater.
5. Noritz NRC66DV (Natural Gas)
- Flow Rate: 6.6 GPM
- Energy Efficiency: 93%
- Best For: Medium-sized homes
- Key Features: Known for its condensing technology, which increases efficiency, the NRC66DV also has low NOx emissions, making it eco-friendly.
- Why It Stands Out: A great mid-range option for energy-conscious buyers who want a balance of performance and environmental sustainability.
What to Consider When Choosing a Tankless Water Heater:
- Fuel Type: Natural gas models offer higher flow rates and better performance for larger homes, while electric models are better for smaller spaces or point-of-use applications.
- Flow Rate: Make sure to choose a unit that can handle your household’s simultaneous hot water demands. Larger homes should look for units with a higher GPM (gallons per minute) rating.
- Efficiency: The Energy Factor (EF) or Uniform Energy Factor (UEF) rating indicates how efficient the heater is. Look for units with higher ratings (0.8 or above for gas, and 0.9+ for electric).
- Special Features: Recirculation pumps, Wi-Fi capability, and self-modulating technology are all valuable features to improve performance and convenience.
Whether you opt for a gas or electric unit, tankless water heaters are a great investment for long-term energy savings and unlimited hot water.