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Suburban Mfg 5481A ST-42 Tankless Water Heater 42,000 BTU

Manufacturer

Suburban Mfg

<h3>Suburban Mfg: Over 75 Years of RV Comfort Innovation</h3><p><strong>Suburban Manufacturing</strong>, an <a href="/7593-suburban-mfg">Airxcel brand</a> headquartered in Dayton, Tennessee, has been one of the most recognized names in the RV industry since its founding in 1947. What began as a small gas space heater company evolved into a powerhouse of RV comfort technology — a transformation driven by a single customer request to adapt a greenhouse heater for use in a motorhome. That spark of ingenuity set Suburban on a course that would define RV living for generations.</p><p>Throughout the late 1960s and beyond, Suburban's engineers pioneered some of the most important advances in RV appliance design: space-saving, horizontally vented gas heating systems, solid-state spark ignition systems, efficient DC furnace motors, and on-demand water heating. In 1998, Suburban became part of the Airxcel family of brands — the largest privately held supplier to the RV industry — further expanding its reach and resources while maintaining its deep roots in Dayton, Tennessee, where it operates a 300,000-square-foot manufacturing facility.</p><h3>A Complete Lineup for RV Comfort</h3><p>Today, Suburban is the go-to brand for RV owners who demand reliability and performance. Their <a href="/7593-suburban-mfg-water-heaters-201162">RV water heaters</a> are among the most trusted on the market, available in propane, electric, and combination models in a range of tank sizes — including their innovative Advantage Direct Fit line designed for easy replacement. For the galley, Suburban's <a href="/7593-suburban-mfg-stoves-cooktops-201021">stoves and cooktops</a> bring thoughtful engineering to compact RV kitchens, from traditional gas ranges to modern induction cooktops with glass tops that double as extra counter space when not in use.</p><p>Behind every Suburban appliance is a robust ecosystem of heating parts and accessories — including furnace gaskets, combustion air housings, igniter electrodes, thermocouples, and circuit boards — making it easy to service and maintain Suburban systems for years to come. The brand's commitment to quality means most products undergo rigorous testing before leaving the factory, and much of the product line is backed by a 2-year limited warranty.</p><h3>Innovation That Keeps Moving Forward</h3><p>Suburban has never been content to rest on its legacy. The brand introduced glass range tops to the RV world, giving campers the flexibility of a larger working surface. More recently, they launched the RV One — a patent-pending combination water heater and furnace unit engineered specifically for compact travel trailers and lightweight RVs. This all-in-one approach exemplifies Suburban's guiding philosophy: deliver maximum comfort while respecting the space and weight constraints unique to the RV lifestyle.</p><p>Whether you're replacing an aging water heater, upgrading your cook space, or sourcing a hard-to-find furnace part, Suburban Mfg delivers the quality, innovation, and reliability that RV enthusiasts have counted on for more than seven decades.</p>

Part Number

5481A
09/12/2036 12:22 PM
Sale Price

$515.88

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Suburban ST-42 Tankless Water Heater provides an endless supply of hot water at a controlled temperature as set by the RV owner. The on-demand feature saves energy by only engaging the burners when water is needed, be it for a hot shower, clean dishes or for hosing off after a day at the beach.

Key Features:

  • 42,000 BTU LP gas operation with direct spark ignition
  • Provides continuous water up to 120 degrees at a flow rate of 1.5 GPM (with intake water at 70 degrees or above)
  • Includes wall mount digital control center for easy temperature adjustment
  • Compact dimensions: 12-3/4" W x 12-1/2" H x 13" D
  • Built-in freeze protection mechanism for cold weather reliability

Safety Features:

  • Flame Out Protection cuts gas supply immediately due to low propane pressure or burner malfunction
  • Scald Protection with internal high-temperature kill switch maintains maximum water temperature of 131°F
  • Child Lock feature prevents outlet temperatures from exceeding 113°F
  • Automatic fan monitoring cuts gas supply if air flow or combustion air supply is interrupted
  • Pressure relief safety valve

This tankless water heater eliminates the need for a storage tank, saving valuable space in your RV while providing continuous hot water whenever you need it. Professional installation by a qualified service technician is required. Access door sold separately.

This was one of the few places I could find that had these in stock.

Very quick turnaround with best online price. Would highly recommend!

Tanks

I can&amp;#039;t really grade the last one as the product has not arrived yet.

Easy transaction, shipping was lightning fast!

Had what I needed at a fair price.

Very quick shipping

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