MOHTOL Upgraded 70W16 Furnace Hot Surface Ignitor – Replacement for Lennox Emerson Armstrong White Rodgers LB-112237B

Overview

Meet MOHTOL’s Upgraded 70W16 furnace hot surface ignitor, a robust replacement designed for compatible Lennox, Emerson, Armstrong, and White Rodgers systems. Built around a silicon nitride ceramic heating element, this part aims to deliver fast ignition with steady performance across varying conditions.

Engineered to perform under typical residential furnace cycles, the 70W16 module blends a compact form with reliable ignition chemistry. Its design emphasizes quick heat-up, predictable resistance changes, and durable construction to support regular furnace operation without frequent replacements.

Core technology and specs

• Specs: 120VAC/60Hz; cold resistance 39–70 Ohms (@25°C); operating current 0.36–0.65 A; 70W heating power.
• Ignition temperature reaches 1200–1500°C within about 20 seconds after power-on.
• Resistance rises as it heats, helping balance ignition efficiency and service life.
• 2-terminal AMP connector with 0.84" female sockets; overall size about 2.5" × 1.5" × 1.5"; 14" wire length.

Why choose MOHTOL 70W16

• Premium silicon nitride material offers robust heat tolerance and a steady ignition profile.
• Measured ignition cycles are designed for high-use scenarios, with quality checks and routine optimization.
• The upgraded ignition pin supports faster start while maintaining safety and reliability.
• Single-pin design with optional gasket support improves stability and simplifies ignition in compatible assemblies.

Compatibility and installation notes

MOHTOL 70W16 is designed to replace LB-112237B and aligns with related model numbers such as 41-430N and 789A-801A1 variants. It covers Lennox, Emerson, Armstrong, Concord, Ducane, AirEase, and Allied Air families, among others.

• Compatible models include Lennox, Emerson, Armstrong, and White Rodgers systems; reference LB-112237B and related variants.
• Installation requires careful handling: the igniter is fragile during transit and handling.
• Measure resistance before use (should be 39–70 Ohms at 25°C). Replace if abnormalities are observed.

What you get

• One MOHTOL 70W16 furnace igniter with 2-terminal AMP connector and 14" lead.
• Compact, gasket-friendly design for stable ignition in compatible assemblies.

Note: This description reflects the features and compatibility of the MOHTOL 70W16 replacement. Always verify fit for your specific furnace model and follow safety guidelines during installation.