Lochinvar® PLT3400 Hot Surface Igniter
The Lochinvar PLT3400 is an OEM hot surface igniter for Lochinvar gas-fired boiler and water heater systems. Features a 15 in lead length for connection to the gas train assembly. Hot surface igniters heat to ignition temperature on a call for heat, eliminating standing pilots and improving system efficiency. Compatible with specific Lochinvar gas train assemblies — confirm model compatibility before ordering. Requires professional installation by a licensed HVAC or plumbing technician.
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Orders placed by 2:00pm EST will ship same day, except on holidays.
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Product overview
Specifications
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Delivery & Returns
Orders will ship same day if received by 2pm EST.
Upcoming holiday closures: May 25, 2026
All returns are inspected on receipt; credit is issued after condition is confirmed. Credit is issued only for items returned in original, saleable condition after inspection.
FINAL SALE ITEMS ARE NOT ELIGIBLE FOR RETURNS OR EXCHANGES.

