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Suburban Mfg 233355 Sail Switch for NT-40 Furnace

Manufacturer

Suburban Mfg

<h3>About Suburban Manufacturing</h3><p><strong>Suburban Manufacturing</strong> has been a cornerstone of the RV industry for over 75 years. <a href="/7593-suburban-mfg">Suburban Mfg</a> traces its roots back to 1947, when it began as the Hunt Heater Company, producing small gas space heaters in Dayton, Tennessee. A pivotal moment came when a customer asked whether one of Suburban's greenhouse heaters could be adapted to run on 12V for use in a motorhome — and the RV-focused legacy of the brand was born. Today, Suburban is headquartered in the same Dayton, Tennessee community it has called home for decades, operating out of a facility that spans more than 300,000 square feet.</p><p>In 1998, Suburban joined the <strong>Airxcel</strong> family of brands, which has grown into the leading designer, manufacturer, and distributor of critically functional products for the RV industry. That partnership gave Suburban the resources to continuously refine and expand its product line while maintaining the hands-on manufacturing quality that built its reputation. Suburban's engineers have pioneered a long list of RV industry firsts — from space-saving, horizontally vented gas heating systems and solid-state spark ignition technology to efficient DC furnace motors and glass-top ranges that double as counter space when not in use.</p><h3>What Suburban Makes</h3><p>Suburban's core product lineup covers the essential comfort systems that RV travelers depend on every day. The brand is perhaps best known for its <a href="/7593-suburban-mfg-heating-200526">RV heating solutions</a>, including a comprehensive range of ducted furnaces and wall heaters engineered specifically for the space constraints and power demands of motorhomes and travel trailers. Suburban furnaces are designed to deliver reliable warmth using propane, with efficient DC blower motors that minimize battery draw — a critical factor for off-grid campers.</p><p>Beyond heating, Suburban has long been a trusted name in RV kitchen appliances. Their <a href="/7593-suburban-mfg-stoves-cooktops-201021">stoves and cooktops</a> are built with the unique requirements of RV galleys in mind: compact dimensions, durable construction, and propane-compatible burners that perform reliably on the road. Suburban has also expanded into <a href="/7593-suburban-mfg-stoves-cooktops-202596">outdoor cooking</a>, offering cooktops and cooking appliances designed for the camp kitchen experience outside the coach — including griddles and other galley accessories inspired by contemporary European design and manufactured in America.</p><p>Most of Suburban's product line is backed by a <strong>2-year limited warranty</strong>, reflecting the brand's confidence in its own manufacturing standards. Each product goes through a rigorous series of quality and safety tests before leaving the Dayton facility — a commitment that has made Suburban a preferred OEM supplier for many of the largest RV manufacturers in North America.</p><h3>A Legacy of Innovation</h3><p>Suburban's influence on modern RV design is difficult to overstate. The company helped pioneer the glass-top range, which transformed compact galley kitchens by providing valuable counter space when burners aren't in use. More recently, Suburban has pushed into all-in-one solutions: their <em>RV One</em> system combines an on-demand water heater and NT furnace into a single unit engineered for the growing segment of compact and lightweight travel trailers. With a track record of listening closely to the needs of RV builders and end users alike, Suburban continues to set the standard for what RV appliances can be.</p>

Part Number

233355
06/01/2036 3:44 AM
Sale Price

$6.12

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

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Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Suburban Manufacturing 233355 Sail Switch is a critical safety component designed specifically for Suburban NT-40 series furnaces. This sail switch monitors airflow within the furnace chamber, ensuring proper combustion air is present before allowing the burner to ignite.

Key Features:

  • Direct replacement OEM part for Suburban NT-40 furnaces
  • Monitors combustion air pressure and airflow
  • Prevents furnace operation when insufficient airflow is detected
  • Essential safety component that helps prevent dangerous combustion conditions
  • Factory-engineered specifications for reliable operation

The sail switch functions by detecting air movement from the furnace blower. When adequate airflow pushes the sail mechanism closed, it completes the electrical circuit allowing the furnace to proceed through its ignition sequence. If airflow is blocked or the blower fails, the switch remains open and prevents furnace operation, protecting against potential safety hazards. This is a genuine Suburban Manufacturing replacement part designed to meet original equipment specifications.

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The add doesn&rsquo;t give the size of the cooler

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