Mount Steel Electric Tankless Water Heater, 12kW–18kW Adjustable, 240V, Configurable Power, Self-Modulating Point-of-use Hot Water Heater, Stable Temperature, 99% Thermal Efficiency — Open-Box, 11% Off

Name: Mount Steel Electric Tankless Water Heater, 12kW–18kW Adjustable, 240V, Configurable Power, Self-Modulating Point-of-use Hot Water Heater, Stable Temperature, 99% Thermal Efficiency
Brand: Mount Steel
SKU: awhd-us-b0djf17ghr
Price: 353.36 USD
Availability: InStock

Brand: Mount Steel

Condition: Used - Mint

$353³⁶

$399⁰⁰

-11% Save $45⁶⁴

Updated: 50 days ago

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Description

[Adjustable Peak Power] Mount Steel Pioneer water heaters support various power configurations that can adapt to your heating needs & what your home's electric panel can support

[Maintenance Free] Our modern "Dry-Heating" tech drastically reduces the mineral buildup and corrosion that commonly impacts water heaters, through seperating heating elements from water and using aluminum in our designs

[Compact Design] Perfect for places where every inch counts. Sleek, silent, and fits where others can't.

[Precise Temperature] Accurate sensors & processors maintain a stable temperature, by adapting to changes in water needs throughout the house

[Trust In Every Detail] Our design uses components come from partners with decades of experience that have been ETL certified & inspected across the entire supply chain

The Mount Steel Pioneer Series is a revolutionary electric tankless water heater designed for high-performance home heating with a unique selectable capacity. Unlike fixed-power models, the Pioneer lets you manually configure the peak power output between 12kW and 18kW to perfectly match your home’s existing 240V electrical panel and breakers, making it an ideal choice for modern apartments and small homes. Engineered with advanced dry-heating technology, this unit keeps heating elements separate from the water stream to significantly reduce mineral buildup and extend the lifespan of the heater even in hard water areas. Its advanced multi-core processor and self-modulating technology ensure a stable water temperature with 99% thermal efficiency, while slashing energy costs and providing endless hot water. This ultra-compact, space-saving wall-mount unit features comprehensive industry standard safety protections, including over-temperature control and complete water-electric separation, offering a reliable, energy-efficient solution for your home’s hot water needs.

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Product Details

SKU:: awhd-us-b0djf17ghr
Model:: MST-TLS18A
Country:: US
ASIN:: B0DJF17GHR
UPC:: 198715286816

Shopping Smarter

Common questions about buying open-box and refurbished.

Why buy refurbished or open-box?

Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $46 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.

What's the difference between open-box and refurbished?

Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.

Why use OpenBoxFox?

Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for Mount Steel products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.

Is it safe to buy refurbished?

Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.