ODS Pilot Assembly for Mr Heater NG Vent-Free Heaters—F270398/70339 Replacement

• Replaces part: F270398,70339
• Replaces Heat Star 20k and 30k NG Vent free heaters
• Fits All Mr Heater 20k and 30k NG Vent free heaters
• Also Fits Vanguard, Comfort Glow, Desa, FMI, Legacy RMC Series, Design Dynamic and other fireplaces and gas logs from many different manufactures
• ODS Pilot assembly used to control the gas control valve on many of the devices used today in direct vents and vent free fireplaces, gas logs, zone heaters, wall heaters and other appliances

Users should verify their fuel type, pilot system type and equipment model before purchase to ensure proper fit compatibility.

Fits residential natural gas heating equipment maintenance, this ODS standing pilot assembly provides a reliable replacement solution for worn pilot systems in matching vent-free and direct vent heating appliances. The standardized design supports straightforward replacement work for both DIY homeowners and professional heating service technicians, eliminating the hassle of sourcing custom components.

This pilot assembly is designed to interface with the gas control valve on a wide range of gas heating devices. It features oxygen depletion protection functionality, built to trigger valve shutdown when oxygen levels in the burner environment become reduced, supporting safe operation of unvented indoor heating units. It is intended for use with standing pilot systems and is not compatible with electronic intermittent pilot configurations.

Constructed with heat-resistant internal components and a robust mounting structure, the assembly withstands regular daily heating cycles and high operating temperatures to maintain stable signal transmission and consistent valve control performance over extended service life.

Part numbers F270398 and 70339, fits natural gas heating equipment. fits Heat Star 20,000 BTU and 30,000 BTU natural gas vent-free heaters, as well as all Mr Heater 20k and 30k NG vent-free heater models.

Additional equipment includes vent-free fireplaces, gas log sets, zone heaters, wall heaters and direct vent heating units from Vanguard, Comfort Glow, Desa, FMI, Legacy RMC Series, Design Dynamic and other matching manufacturers.

This replacement part is for natural gas use only, and is designed for installation in matching vent-free and direct vent heating appliances. Installation follows standard gas appliance replacement protocols, with no specialized tools required for most compatible units. Replacing a degraded or faulty pilot assembly restores normal gas control function and reliable safety operation, extending the usable life of existing heating equipment without the higher expense of full unit replacement.

Suitable for routine residential heater upkeep, fireplace maintenance and targeted pilot system repair work, this ODS pilot assembly balances reliable performance and cost efficiency, supporting steady, safe operation of various natural gas vent-free heating appliances for long-term daily use.