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Overview

Get endless on-demand hot water with the Giant UTM-199X3-N Tankless Natural Gas Water Heater. Delivering up to 199,000 BTU and up to 10.5 GPM, it provides high-flow hot water for showers, appliances and everyday use. Integrated X3 Scale Prevention Technology extends lifespan and reduces maintenance, while a 15-year limited heat exchanger warranty adds peace of mind.

Giant UTM-199X3-N Tankless Natural Gas Water Heater – 199,000 BTU On-Demand Hot Water with X3 Scale Prevention Technology

Model: UTM-199X3-N
Web Code: 19718666
Sold and shipped by | 3.6 seller rating (8 reviews)

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Warranty

Check with the manufacturer for details.

For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

Enjoy reliable, continuous hot water without the energy waste of a storage tank with the Giant UTM-199X3-N Tankless Natural Gas Water Heater. This high-performance unit produces up to 199,000 BTU of power and can deliver up to 10.5 gallons per minute (GPM) of hot water — plenty for simultaneous showers, laundry and dishwashing in medium to large households.

Built with X3 Scale Prevention Technology, this tankless heater fights mineral buildup so the heat exchanger maintains “like new” performance over time and can last up to three times longer than traditional models without X3 protection. The technology helps reduce routine descaling maintenance and supports consistent efficiency and flow.

Designed for residential indoor installation, this unit offers high-efficiency operation with a 0.95 Uniform Energy Factor (UEF) that helps lower energy costs compared to conventional tank heaters. The compact, wall-mount form saves space while delivering powerful performance.

Durable construction comes backed by a 15-year limited warranty on the heat exchanger, giving you long-term confidence in your water heating system.

Whether you’re renovating, building new or upgrading an aging system, the Giant UTM-199X3-N delivers dependable, on-demand hot water with advanced scale protection and long-lasting efficiency.

Product Condition
Brand New

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Please contact the manufacturer directly for information about their availability guarantee.

Shipping Charges

Free standard shipping on all orders.

Processing Time

Most items ship within 2 business days after an order is placed*. Allow additional time for shipping to your address.
*Please note: If an item you ordered becomes unavailable, you'll be notified and a full refund will be processed within 2 business days.

Shipping Area Restrictions

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  • No restrictions in Canada
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Product Category
Small appliances, Personal care, and Grooming appliances
Return/Exchange Period
30 days
Condition
Opened

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