Converting a natural gas stove to propane is a common task when moving homes or switching fuel sources. Natural gas and propane burn at different pressures, so the conversion requires swapping out the burner orifices and adjusting the pressure regulator. Here's exactly how to do it safely.
Tools & Materials You'll Need
- Propane conversion kit (model-specific for your stove)
- Adjustable wrench and screwdrivers
- Pipe thread sealant or Teflon tape (gas-rated)
- Leak detection solution or soapy water
- Your stove's owner manual
⚠️ Important Safety Warning
Before you begin, shut off the gas supply at the main valve. Work in a well-ventilated area. If you smell gas at any point during or after installation, stop immediately, ventilate the area, and call your gas utility.
Step-by-Step Conversion
Step 1 — Disconnect and prepare. Turn off gas, unplug the stove from electricity (if applicable), and pull it away from the wall. Remove the grates and burner caps.
Step 2 — Remove the natural gas orifices. Unscrew the brass orifice fittings from each burner. These are typically accessed by removing the burner head. Use a proper orifice wrench to avoid damage.
Step 3 — Install propane orifices. Thread the new, smaller propane orifices into each burner port. Propane orifices are smaller than natural gas ones because propane is delivered at higher pressure. Hand-tighten, then snug with a wrench — do not overtighten brass fittings.
Step 4 — Adjust or replace the regulator. Many conversion kits include a dual-rated regulator. Follow your kit's instructions for switching it to the propane setting.
Step 5 — Connect your propane supply and check for leaks. Apply soapy water to all connections and slowly open the propane valve. Bubbles indicate a leak — tighten fittings and recheck before lighting.
Step 6 — Test each burner. Light each burner and check for a clean blue flame. An orange or yellow flame indicates incomplete combustion — re-check orifice sizing and air shutter adjustments.
When to Call a Professional
If you're uncomfortable at any point, your local codes require it, or your stove is older than 15 years, hire a licensed gas technician. The cost is typically $75–$150 and is well worth the peace of mind.
Frequently Asked Questions
Most modern stoves are convertible, but some manufacturers don't offer conversion kits. Check your stove's documentation or manufacturer's website for compatibility.
Kits range from $25 to $80 depending on your stove brand and model. Professional installation adds $75–$150 in labor.
Propane has about 2.5x the energy density of natural gas by volume, so the smaller orifices compensate. A properly converted stove should have similar BTU output.