MRCOOL HeatWise™ 4500 Watt Electric Tank Water Heater - 50 Gallon Capacity, MTWH04550E

The MRCOOL® HeatWise™ 50-Gallon Electric Tank Water Heater is the high-capacity solution for larger households that cannot afford to run out of hot water. Driven by a 4,500W element at 240/208V and adjustable across a 90–150°F range, the MTWH04550E is built to meet the sustained demand of multiple simultaneous users without breaking stride. An anti-bacterial enameled tank and ceramic-coated heating element form a corrosion-resistant core designed for the long haul, while a patented Rare Earth Anode rod outlasts conventional magnesium rods by 50%, providing a decisive edge in tank longevity. A self-cleaning flow guide manages sediment buildup automatically, and a solid brass ball valve delivers a leak-resistant water connection built to last. AHRI Certified and cULus Listed, the MTWH04550E is protected by a 10-year parts warranty, a 10-year tank warranty, and a 1-year limited labor warranty.

• 50-Gallon Capacity: The MTWH04550E carries the largest reserve in the HeatWise™ lineup, powered by a 4,500W element at 240/208V with a 90–150°F adjustable temperature range and a max working pressure of 149.39 PSI, purpose-built for high-demand households.
• Anti-Bacterial Enameled Tank: A 2mm steel shell with a 0.25–0.5mm anti-bacterial enamel lining resists corrosion and suppresses bacterial growth, safeguarding water quality and structural integrity through years of heavy daily use.
• Patented Rare Earth Anode Rod: MRCOOL®'s proprietary Rare Earth Anode rod outlasts standard magnesium anode rods by 50%, delivering superior internal tank protection and a measurably longer service life.
• Ceramic-Coated Heating Elements: Enamel-coated heating elements resist scale accumulation and corrosion, maintaining consistent heat transfer efficiency and reducing the maintenance burden over the full life of the unit.
• Flow Guide Self-Cleaning: An integrated flow guide agitates sediment during normal operation, continuously flushing mineral deposits before they compromise heating efficiency or tank integrity.
• Durable Brass Ball Valve: A solid brass ball valve at the 3/4" NPT water connection provides a robust, corrosion-resistant shutoff that holds firm where plastic fittings fail over time.
• Easy Installation: Standard 3/4" NPT water connections and a conventional 240/208V electrical hookup keep the install process clean and accessible, whether replacing an existing unit or fitting a new location.
• Industry-Backed Warranty: Backed by a 10-year parts warranty, 10-year tank warranty, and 1-year limited labor warranty for single-family residential installations, with AHRI Certification and cULus Listing confirming compliance with North American safety and performance standards.