and Lennox

often referenced as a replacement thermostat for Marley baseboard heaters

Engineered for heavy-duty unit heaters and rooftop units

though technicians must ensure proper oil type (POE is typically required for R-407C) before startup

and cabinet unit heaters

Laars Heating Systems RE0100900 Gas Ignition Kit Freon and LennoxThe Laars Heating Systems RE0100900 Gas Ignition Kit is a direct replacement OEM component engineered for high efficiency gas fired boilers and water heaters. As a veteran grade HVAC ignition module replacement, this kit is designed to restore critical combustion sequences in units like the Laars NeoTherm and Laars H Series. The RE0100900 ignition control features a microprocessor based diagnostic board that provides real time flame sensing and spark