Switching a gas insert from propane to natural gas requires more than a new orifice — it means recalibrating the whole fuel delivery path to match the different gas pressure and burn characteristics. The Enviro EX35 Conversion Kit - LP to NG (50-3547) is the genuine Enviro part built to do exactly that for the EX35 Gas Insert.

Purpose

This kit converts the fuel source of the Enviro EX35 Gas Insert from propane to natural gas, replacing the components needed for the burner to run correctly on the new gas type.

Key Benefits

• Restores proper burner performance after a fuel-source change
• Maintains factory-calibrated combustion for consistent heat output
• Genuine Enviro part made for a proper fit, not an aftermarket substitute
• Ships new in original packaging

Other Notes

Because conversion kits are special-order and non-returnable, confirm this part number against your EX35 installation manual before ordering, and have the conversion performed by a licensed gas technician in accordance with local codes.

This part fits 1 compatible model on record. When converting fuel types, it's also worth having a technician inspect the pilot assembly and burner orifices, since these components work together with the conversion kit to maintain correct combustion.

Not sure it fits your unit? Contact us with your model number and we'll confirm before you order.