Description
The Laars Heating Systems RW2015900 is an OEM replacement flame sensor with gasket, engineered to deliver accurate and dependable flame detection in Laars heating equipment. Maintaining a properly functioning flame sensor is critical to safe boiler and water heater operation — a faulty or worn sensor can cause nuisance lockouts, failed ignition sequences, or unsafe burner conditions.
Product Overview
This flame sensor monitors the presence of a burner flame during operation and sends a signal to the control board to confirm ignition. The included gasket ensures a secure, leak-free seal at the installation point, making this a complete replacement solution.
Key Features
- OEM Laars Heating Systems replacement part
- Includes matching gasket for a complete, sealed installation
- Designed for accurate flame detection and reliable burner control
- Helps prevent nuisance shutdowns caused by a degraded or contaminated sensor
- Direct OEM fit for compatible Laars boiler and water heater models
Why Replace Your Flame Sensor?
Over time, flame sensors accumulate oxidation and residue on the sensing rod, reducing electrical signal strength. This can cause the control board to fail to detect a valid flame, resulting in repeated lockouts. Replacing the sensor with a genuine Laars part restores proper operation and extends equipment life.
Applications
- Compatible with select Laars boilers and water heaters — verify compatibility with your model before ordering
- Ideal for residential and light commercial hydronic heating systems
Part Information
- Brand: Laars Heating Systems
- Part Number: RW2015900
- Includes: Flame sensor and gasket







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