MARS 34608 Coil

When you're out in the field facing a dead strip heater, the MARS 34608 Resistance Heater Coil is the professional-grade solution for quick, reliable restringing. This 3500W 240V heater coil is engineered for a high degree of versatility, featuring a close-wound design that technicians can stretch to lengths between 50.75 and 145 inches to match specific cabinet requirements. At 240V, it delivers a full 3500W of heating power, while remaining compatible with 208V systems at a derated 2625W output. This kit eliminates the guesswork by including essential hardware for a complete rebuild: a 300-degree thermal fuse link for critical over-temperature protection, welded terminal bolts that minimize electrical resistance, and a variety of ceramic insulators and bushings (including standard .375 and .450 inch sizes). Whether you are performing an HVAC heater coil replacement or a preventive electric heat restring, this resistance heating element provides the structural integrity and thermal performance expected in demanding residential and light commercial applications.

Key Benefits:

• Field-Adjustable Length: The MARS 34608 Coil stretch-to-fit architecture allows for a custom fit in various air handler and furnace configurations.
• Integrated Safety: Every kit comes with a 300-degree thermal fuse link and high-grade ceramic insulators to prevent grounding and overheating.
• Low Resistance Connections: Features factory-welded terminal bolts to maximize heat transfer efficiency and prevent terminal burnout.
• Comprehensive Hardware: Includes multiple ceramic bushing sizes (.375" and .450") and necessary nuts/washers to ensure a secure, professional mount.

Common Questions:

How do I determine the correct length for this replacement coil?
When performing an HVAC heating coil repair, you should measure the existing coil or the distance between terminal points in the heater bank. This 3500W 240V resistance heater coil is designed to be stretched evenly across the insulators to maintain the correct watt density and prevent hot spots.

Can this coil be used in a 208V system?
Yes, the MARS 34608 is rated for dual-voltage applications. While it produces 3500W at 240V, it will operate safely at 2625W on a 208V circuit, making it a versatile stock item for service vans.

What causes these resistance coils to fail prematurely?
The most common failure points are restricted airflow (often from dirty filters or a failing blower), which triggers the 300-degree fuse link, or corrosion at the terminal connections. Always verify that ceramic terminal insulators are intact during installation to ensure a long service life.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.