MRCOOL

MRCOOL HeatWise™ 4500 Watt Low Electric Tank Water Heater 38 Gallon Capacity

Regular price  Sale price  $783.00 $783.00 Unit price  Sold out
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Product details

The MRCOOL® HeatWise™ Low Boy 38-Gallon Electric Tank Water Heater provides consistent, energy-efficient hot water tailored to meet the daily needs of any home. Engineered for strength and reliability, this compact model helps lower energy usage without compromising performance-making it a smart and environmentally responsible solution for modern households.

Outfitted with high-efficiency heating elements, the unit quickly reaches your desired temperature, reducing wait times and enhancing everyday comfort. Its dual stainless steel tank and ceramic-coated heating element delivers up to 50% greater resistance to corrosion compared to standard systems-offering increased durability and reduced upkeep. Additional premium features, including an anti-bacterial tank, built-in self-cleaning function, and patented Rare Earth Anode rod, support long-term efficiency and clean water quality.

With a low-profile design, the heater is perfect for installations in spaces with restricted vertical clearance-like beneath countertops, inside short closets, or under stairwells. Easy-access temperature controls make adjustments simple, while the whisper-quiet operation ensures minimal noise. Integrated safety protections against overheating, dry firing, and pressure buildup provide added peace of mind.

Covered by a 10-year parts warranty, 10-year tank warranty, and 1-year limited labor warranty, the MRCOOL® Low Boy Electric Tank Water Heater combines compact convenience, powerful performance, and dependable longevity you can count on.

Shipping and Payments

We process orders within 1-2 business days. Once your order has shipped, you will receive a confirmation email with tracking information.

Estimated Delivery Times
Standard Shipping: 3-7 business days
Expedited Shipping: 2-3 business day
Express Shipping: 1-2 business days
Delivery times may vary during holidays, promotions, or due to carrier delays.

Order Tracking

Once your order ships, you will receive a tracking number via email. Please allow up to 24 hours for tracking information to update.

Refund and returns

We want you to love your purchase. If you're not completely satisfied, you may return eligible items within 30 days of delivery.

Return Requirements

Items must be:
Unused and in original condition

Returned with original packaging
Accompanied by proof of purchase
Non-Returnable Items

The following items cannot be returned:


Gift cards
Final sale items
Personalized or custom-made products
Digital products and downloads

Technical specifications

Specifications

Full engineering data for this system. Certified performance ratings per AHRI Standard 210/240.

Model MTWH04538EL
UPC 840255592017

Electrical

Voltage 208-240V / 60Hz
Circuit breaker 30 A
MCA (min. circuit ampacity) 18.7 A

Warranty

Parts 10 years

Documents & downloads

Documents & downloads

Manuals, warranty terms and certification documents for this system.

DIY installation

Or book certified installation

Our licensed team installs what we sell - sized right, warrantied, done in a day.

Questions & answers

Before you buy

Everything homeowners ask about installing and sizing a MRCOOL system.

Can I install a water heater myself?

Water heaters involve plumbing connections and a dedicated electrical circuit, and most areas require a permit and inspection. A licensed plumber or electrician is the safe route.

What tank size do I need?

Tank size follows household size and peak hot water demand. The capacity of this model is listed in the specifications.

What power does it need?

Electric tank water heaters need a dedicated circuit sized to the element wattage. The required voltage and wattage are in the specifications on this listing.

How long should it last?

Service life depends on water quality and maintenance. Flushing the tank periodically and replacing the anode rod when it wears out will both extend it.

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