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Lennox G40UH-60D-135 Gas Valve
This important valve is most likely operated by the main control unit which is affixed to the main HVAC system, if present. The main job of a gas valve is that it regulates the flow the natural gas entering the heating unit.
What are the signs that the gas control valve is about to stop working?
- System refuses to start
- You smell gas
- The valve looks damaged
- Furnace will not light
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