Description
The Allanson 421-331 is a high-voltage ignition transformer designed for reliable ignition in oil burner systems, including applications requiring compatibility with Lennox burners. Operating on a 120V primary input and delivering approximately 10,000 volts output, this transformer provides consistent spark energy for dependable burner startup. It is suitable for residential, commercial, and light industrial heating systems where reliable ignition performance is critical. Built with durable construction, this unit is designed to withstand demanding operating conditions and deliver long service life.
Key Features:
- 120V primary input for standard electrical supply
- Approximately 10,000V output for strong ignition spark
- Designed for use with Lennox burner systems
- Suitable for oil burner and HVAC heating applications
- Provides consistent ignition performance for reliable startup
- Durable construction for long-term reliability in demanding environments






