Yes, a gas stove can switch to propane using an LP conversion kit, proper regulator setting, and a licensed installer.
If you’re moving off natural gas or adding a cylinder-fed setup, switching a cooking range to liquefied petroleum (LP) is a common path. The process hinges on the right parts, the right pressure, and the right person doing the work. Below is a clear, hands-on guide that explains what changes, what a kit includes, how the work unfolds, what it costs, and how to spot a perfect flame when the job is done.
What Changes When Moving From Natural Gas To LP
Natural gas is less dense and runs at a lower energy content per unit volume. LP runs richer and needs a tighter metering path to keep flames steady and safe. That’s why the job isn’t just a hose swap. Burners get new orifices, the regulator gets re-set for LP pressure, and low-flame screws need a fresh tune.
| Item | Natural Gas (NG) | Propane (LP) |
|---|---|---|
| Typical Appliance Pressure | ~3.5″ water column | ~10″ water column |
| Orifice Size Trend | Larger opening | Smaller opening |
| Energy Per Volume | Lower | Higher |
| Air Mix Setting | More open | More restricted |
| Regulator Cap/Setting | NG position | LP position |
| Supply Source | Utility line | Tank or cylinder |
Converting A Natural Gas Range To LP Safely
Most modern ranges ship ready for NG and include an LP kit in a bag or taped near the regulator. Brands may pack the kit in the burner box, toe-kick space, or control area. The kit has clearly marked jets for each burner, a cap or insert for the regulator, and small labels. A pro installs these parts, tunes the valves, and tests for leaks.
What A Typical LP Conversion Kit Includes
- LP orifices for each burner head (numbered for size and BTU).
- Regulator cap or spring to switch to LP pressure.
- Oven and broiler jets sized for LP (if the model uses removable jets).
- Conversion labels to mark the appliance rating plate and valve area.
- Instructions specific to the model family.
Who Should Perform The Work
A licensed installer or brand-authorized tech should handle the swap. Many user guides say the same in bold print. Besides safety, this protects your warranty and keeps things aligned with local code. If the home has no cylinder or tank yet, a propane supplier can size the container, set the regulator at the tank, and route interior piping.
Step-By-Step: What The Pro Does
1) Confirm Product Suitability
The rating plate lists approved gases. If LP is listed, the unit can be set up for LP with the proper kit. If LP is not listed, the tech checks the maker’s bulletin for that exact model. Some older units lack a field kit and should not be altered.
2) Shut Off And Make Safe
The manual shutoff valve near the range goes to off. Power is unplugged to avoid ignitor sparks during work. A gas detector or a sniff test confirms no raw gas odor around fittings.
3) Swap Surface Burner Orifices
The tech removes each cap and head to reach the brass jet. Each new LP jet has a stamped number. The largest burner (often a power burner) gets the smallest hole number among the set. Jets seat snugly but not gorilla tight to protect the threads.
4) Convert The Regulator
The cap on the built-in regulator flips or gets replaced. One side reads “NG,” the other “LP,” or there’s a spring and cap for LP. The cap locks in place with its arrow set for LP. This step sets downstream pressure in the appliance.
5) Convert Oven And Broiler
Some ovens use a separate jet on the bake and broil tubes. Others meter flow through the valve alone. The manual calls out the method. If a jet is present, it gets an LP-sized part. If not, the tech sets the valve for LP as directed.
6) Adjust Air Shutters
LP needs a slightly different air mix. Many burners use a sliding shutter near the base. The goal is a tight blue flame with a small inner cone and no lazy yellow tips. A tiny hint of yellow at the tip during warm-up is normal; steady yellow is not.
7) Tune Low Flame (Simmer)
After the swap, simmer settings can drop too low or blow out. The tech sets each valve’s low-flame screw so the flame holds steady on the lowest mark. The oven may need a bake calibration to hit setpoint temps.
8) Leak Check And Label
All joints get a bubble solution check. No bubbles, no leak. The installer applies the “Converted To LP” sticker on the rating plate and adds the date. Keeping the removed NG jets in a marked bag is smart in case the home goes back to utility gas later.
Code, Instructions, And Where To Read More
Two sources give clear guidance on this topic. Many models include a link to brand instructions with the kit; a good reference is GE’s LP conversion instructions, which echo the steps above. For safety and code scope, the NFPA 54 fuel gas code overview describes how appliances and piping are governed. Read the unit’s exact manual first, then align the work with local rules.
Costs, Timing, and What To Budget
Pricing depends on access, model complexity, and local labor. A typical kitchen swap falls into this range:
- Parts: Many ranges ship with the kit. If not, a maker kit usually costs a modest amount relative to the appliance. Specialty or pro lines can run higher.
- Labor: One to two hours for a straightforward job. Extra time if the installer must reroute piping, change a connector, or correct a past repair.
- Tanks and Regulators: If you’re new to LP service, the supplier quotes the tank size, yard set, and first-stage regulator. Interior piping is a separate line item.
When A Conversion Is Not A Good Idea
Most modern units allow a swap, but not all. Here are common blockers:
- No Factory Kit: The maker never released LP parts for that model family.
- Damaged Valves Or Threads: If a jet boss is stripped or a valve leaks, parts must be replaced first.
- Non-Listed Fuel: The rating plate lists NG only, and the maker confirms no LP listing.
- Out-of-Date Venting Or Piping: If the kitchen needs venting or the line is undersized, that work comes first.
How To Check Flame Quality After The Swap
Flame shape tells the whole story. A clean LP flame has a sharp inner cone and a light blue body. It should hug the burner ports without lifting off. Here’s a quick read:
- Soft Yellow Tips: Too little air. Open the shutter a touch.
- Roaring, Lifting Flame: Too much air or too much pressure. Close the shutter slightly and confirm regulator setting.
- Sputter Or Blow-Out On Low: Low-flame screw needs a small turn up.
Common Questions About Parts And Settings
Do You Need A New Flexible Connector?
If the connector is old, kinked, or not rated for LP, the installer swaps it. A connector with a protective coating and the right BTU rating is the standard pick.
What About The House Regulator?
Most homes on LP have a first-stage regulator at the tank and a second-stage regulator near entry. The appliance still has its own built-in regulator. Each stage brings pressure down to the right window for steady flame and clean combustion.
Can You Reuse The Old Orifices?
No. Drilling jets is not acceptable. Use the exact LP parts that match burner size. Keep the NG jets labeled in a bag for a later swap back.
How Do You Set Simmer After The Swap?
With the burner on low, the tech pulls the knob and turns the set screw a hair until the flame holds without flicker. Each valve can need a slightly different tune.
Safety Checks You Should Expect
A pro never leaves without five quick checks:
- Bubble test on every opened joint.
- Ignition on each burner and in the oven.
- Flame stability at low and high.
- No soot on cookware after a short boil test.
- Stickers applied and the manual updated with the kit number.
Troubleshooting After Conversion
If something feels off, match the symptom to the likely cause and a quick fix path below. If you’re not trained, call your installer or the brand service line first.
| Symptom | Likely Cause | Fix Path |
|---|---|---|
| Big Yellow Flames | Air shutter too closed; wrong jet | Open shutter slightly; verify LP orifice size |
| Flame Lifts Or Hisses | Too much air or pressure | Close shutter a touch; check regulator cap |
| Burner Won’t Hold On Low | Low-flame screw too lean | Tune screw while flame just holds |
| Slow Boil Times | Under-sized supply or kinked line | Check connector, valve fully open, piping size |
| Oven Soot Or Odor | Poor mix or wrong jet at bake | Set shutter; confirm bake jet and regulator |
| Frequent Ignitor Clicking | Moisture, misaligned cap, or poor ground | Dry caps, reseat parts, check ground wire |
Prep Checklist Before You Book The Installer
- Find The Kit: Look behind the drawer, inside the burner box, or taped near the regulator. If missing, order the exact part by model number.
- Clear Access: Pull the range out a few inches and free the sides. Make room around the shutoff valve.
- Share The Model/Serial: Read the plate inside the door frame or back panel so the tech brings the right bits.
- Ask For A Leak Test: Confirm bubble testing and a quick simmer tune are in the visit.
- Store Removed Jets: Label a zip bag “NG jets” and keep it with the manual.
Tips For A Smooth First Week On LP
- Relearn Simmer: Flames look slightly different on LP. Use a smaller pan and the next-to-lowest mark at first.
- Watch For Soot: A sooty pan bottom points to a mix issue. Call the installer for a quick shutter tweak.
- Run A Boil Test: Time a quart of water on the same burner for a few days. Times should match within a small margin.
- Smell Check: If you catch a raw odor, shut the valve, air out the room, and contact your supplier or service line.
Why Brands Stress Factory Instructions
Makers design jets, valves, and regulators to work as a matched set. Brand guides give jet numbers by burner, show where the regulator cap flips, and list the exact low-flame screw location. A good example is the step-by-step guide on GE’s support page for LP setup. Code bodies also publish scope and pressure ranges, as shown in the NFPA 54 overview. Match both to your local rules and you’re set.
Quick Takeaways You Can Act On Today
- Yes, the swap is routine: Most modern ranges are built with LP in mind and include the parts.
- Use the right kit: Only the factory set sized for your model.
- Let a pro handle it: You get proper pressure, clean flame, and a paper trail for warranty and code.
- Keep the old jets: Bag and label them for a later return to utility gas.
- Check the flame: Blue, stable, no lift, no soot.
Bottom Line On Switching A Range To LP
A safe, clean conversion comes down to three things: factory parts, correct pressure, and smart tuning. With those in place, cooking performance stays strong, simmer control feels precise, and the kitchen stays free of soot and odor. Book a licensed installer, have the kit ready, and you’ll be cooking on LP with confidence.
