Rheem Furnace Parts 42-100491-09 Start RelayRheem Furnace Parts 42 100491 09 is a reliable start relay engineered for dependable furnace startup in homes and small businesses. As a genuine replacement part, the Rheem 42 100491 09 ensures your heating system begins its cycle smoothly, reducing cold mornings, uneven temperatures, and unexpected service calls. Designed to withstand typical furnace operation, this start relay delivers a steady start signal to the control board, helping prevent

making it easy to pair with standard heating setups

Operating range 70–145°F

Heil Quaker/ICP 1172716 is a precision replacement fan component designed for robust performance in industrial HVAC systems

It supports efficient air movement and steady performance across seasons

washable filter designed for use on gas furnaces

The Resideo Honeywell Home T498A1778 electric heat thermostat delivers reliable

Designed for reliability in demanding heating environments

it captures microscopic particles while maintaining a dependable 45 GPH flow rate

Sensor element: 1097 Ohm PTC at 77°F

Perfect for zone-based heating and cooling

2-way valve body with Cv=7

Compatibility with Goodman heating systems and suitable furnace models