MRCOOL HeatWise™ 4500 Watt Tall Electric Tank Water Heater - 38 Gallon Capacity, MTWH04538EL

The MRCOOL® HeatWise™ 38-Gallon Electric Tank Water Heater strikes the balance between meaningful hot water capacity and a low-clearance footprint that standard full-height tanks cannot match. At 22.8" in diameter and 32.1" tall, the MTWH04538EL fits installations where vertical space is limited but a 28-gallon reserve falls short of household demand. Like the 28EL, it ships with an included energy cover that curtails standby heat loss and trims operating costs from day one. A 4,500W element at 240/208V powers the unit across a 90–150°F adjustable range, while an anti-bacterial enameled tank and ceramic-coated heating element build corrosion resistance into the core. A patented Rare Earth Anode rod outlasts conventional magnesium rods by 50%, and a self-cleaning flow guide handles sediment automatically throughout the unit's service life. AHRI Certified and cULus Listed, with a 10-year parts warranty, a 10-year tank warranty, and a 1-year limited labor warranty.

• 38-Gallon Low-Profile Capacity: The MTWH04538EL delivers a 38-gallon hot water reserve in a low-clearance footprint measuring 22.8" in diameter and 32.1" tall, powered by a 4,500W element at 240/208V with a 90–150°F temperature range and a max working pressure of 149.39 PSI.
• Included Energy Cover: The MTWH04538EL ships with an energy cover included, reducing standby heat loss from the tank exterior and lowering day-to-day operating costs without any additional purchase or accessory required.
• Low-Clearance Installation: At 32.1" tall, this unit is engineered for restricted-height applications including stairwell closets, low utility rooms, and mechanical spaces where full-height tanks cannot be installed, delivering 38 gallons of capacity without the vertical footprint.
• Anti-Bacterial Enameled Tank: A 2mm steel shell with a 0.25–0.5mm anti-bacterial enamel lining resists corrosion and inhibits bacterial growth, protecting water quality and structural integrity through years of continuous high-demand use.
• Patented Rare Earth Anode Rod: MRCOOL®'s proprietary Rare Earth Anode rod outlasts standard magnesium anode rods by 50%, providing superior internal tank protection and a measurably extended 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 degrade efficiency or compromise tank integrity.
• Durable Brass Ball Valve: A solid brass ball valve at the 3/4" NPT water connection delivers a corrosion-resistant, leak-proof shutoff built to outlast plastic alternatives across years of continuous service.
• Industry-Backed Warranty: Protected 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.