TEC Infrared Grills · Fuel & Conversion
TEC LP ↔ NG Conversion — When to Convert and How
TEC offers conversion kits for every model. The conversion is NOT a DIY-recommended job — it requires orifice swap + regulator change + pressure verification.
By Reed · Updated November 10, 2026
What you need
Step by step
Confirm your current fuel and desired fuel
Check the rating label on the grill (near the LP tank or on the control manifold) — it reads either 'LP' or 'NG.' Confirm which direction you need to convert.
Order the conversion kit from TEC
Call TEC at 800-331-0097, Option 1. Conversion kits are available for ALL current models (Sterling Patio FR, Patio FR, G-Sport FR, Cherokee FR). TEC will ship the right kit for your model and serial number.
Have a licensed technician perform the swap
The kit includes orifices, regulator (if applicable), and instructions. A licensed gas plumber swaps orifices on each burner, changes the regulator if the kit includes one, verifies manifold pressure, and updates the rating label on the grill.
Verify operation
After conversion: light each burner on HIGH, confirm a clean blue flame with minimal yellow tipping, confirm the grill reaches operating temperature within the manual's spec. If any burner shows excessive yellow flame, the orifice is incorrect — stop and have the technician recheck.
Common mistakes
- Running NG grill on LP without conversion. LP orifices are smaller than NG. Running NG through LP orifices = severe underfueling, inconsistent flame, cold spots. Running LP through NG orifices = over-fueling, yellow flames, soot, fire risk.
Hands-on tips
- If you're moving from a propane tank to a NG house line, the gas plumber running the new NG line can often do the conversion at the same time.
- Update the rating label after conversion. Future service techs will diagnose based on what the label says — a mis-labeled grill confuses troubleshooting for years.
Questions people ask
Can I buy the conversion kit myself and install it?
TEC doesn't formally restrict it but strongly recommends a licensed gas technician. Manifold pressure verification requires a manometer; incorrect orifice sizing causes long-term combustion issues.
Does conversion void the warranty?
Not when done per TEC's kit instructions. Non-TEC parts or improper conversion will void it — document the conversion (receipts from the kit + technician) and retain for warranty claims.
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