MRCOOL HeatWise™ 4500 Watt Tall Electric Tank Water Heater - 28 Gallon Capacity, MTWH04528EL

The MRCOOL® HeatWise™ 28-Gallon Electric Tank Water Heater is the compact, efficiency-forward choice for smaller households, apartments, and installations where vertical clearance is a hard constraint. At just 20.5" in diameter and 30.1" tall, the MTWH04528EL fits comfortably in low-clearance utility spaces where a full-height tank cannot go, and it ships with an included energy cover that reduces standby heat loss and keeps operating costs in check. A 4,500W element at 240/208V heats water across a 90–150°F adjustable range, while an anti-bacterial enameled tank and ceramic-coated heating element form a corrosion-resistant core built for the long term. A patented Rare Earth Anode rod outlasts conventional magnesium rods by 50%, and a self-cleaning flow guide manages sediment automatically. AHRI Certified and cULus Listed, with a 10-year parts warranty, a 10-year tank warranty, and a 1-year limited labor warranty.

• 28-Gallon Low-Profile Capacity: The MTWH04528EL delivers a 28-gallon hot water reserve in a compact footprint measuring just 20.5" in diameter and 30.1" 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: Unlike standard HeatWise™ models, the MTWH04528EL ships with an energy cover included, reducing standby heat loss from the tank exterior and contributing to lower day-to-day operating costs without any additional purchase.
• Low-Clearance Installation: At 30.1" tall, this unit is purpose-built for low-clearance applications including crawl spaces, stairwell closets, and utility areas where standard-height tanks are not viable, delivering full electric tank performance 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 operation.
• 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 buildup and corrosion, sustaining efficient heat transfer and reducing maintenance demands across the full service life of the unit.
• Flow Guide Self-Cleaning: An integrated flow guide agitates sediment during normal operation, flushing mineral deposits continuously 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.