The core difference is your home’s gas service: a 2-burner cooktop runs either propane (LP) or natural gas, and the unit must be factory-set or correctly converted for that fuel — using the wrong one is a safety and performance problem.
Hook a factory-set natural gas cooktop to a propane line and you get oversized flames that scorch pans and spew soot. Hook an LP-set unit to natural gas and the burners barely light. The appliance platform may be identical, but the fuel plumbing is not.
This guide covers what separates the two fuels, how to tell what you have, and where the conversion line sits.
What Actually Separates Propane And Natural Gas?
Propane and natural gas burn at different pressures and energy densities, so a cooktop’s gas orifices and regulator must match its fuel. Propane delivers more energy per cubic foot and requires a higher supply pressure, while natural gas needs a lower pressure and larger orifice openings. That mismatch is why a “universal” 2-burner cooktop doesn’t exist as a plug-and-play product.
Whirlpool’s propane gas conversion instructions specify a supply pressure of 14 in. W.C.P. for propane conversion — meaning a propane setup needs a regulator sized for roughly that supply pressure, not a generic one. Natural gas runs at a lower water-column pressure, which is why the regulator and orifices can’t be swapped casually.
Practically, it comes down to compatibility with the gas already piped into your home: propane tank, LP-ready unit; natural gas meter, NG-ready unit.
Many 2-burner models are convertible, but the conversion must follow the manufacturer’s instructions and use the correct kit — not a generic one from a hardware bin.
How Do You Tell Which Fuel A Cooktop Is Set For?
Check the model number suffix and the product listing’s fuel-type field before you buy — fuel configuration varies by SKU, not just by brand, which is the biggest source of ordering mistakes.
Same brand shelf, three different fuel setups — read the SKU, not the photo.
| Factor | Propane (LP) | Natural Gas (NG) |
|---|---|---|
| Factory default | Often pre-set for LP | Often factory-set for NG |
| Supply pressure | 14 in. W.C.P. (per Whirlpool) | Lower water-column pressure |
| Switching fuels | Needs LP conversion hardware | Needs NG-to-LP conversion kit |
| Regulator included? | Varies by listing | Sometimes not included |
| Who it suits | Homes on a propane tank | Homes on a gas meter |
| Conversion kit source | Manufacturer’s kit only | Manufacturer’s kit only |
| Safe to guess? | No | No |
Can You Convert A 2-Burner Cooktop Between Fuels?
Sometimes — but only when the manufacturer explicitly allows it and supplies the kit. JennAir’s installation instructions state the cooktop is factory-set for natural gas and that propane use requires the provided conversion kit and the “Gas Conversions” section of the manual. Manufacturers gate the switch everywhere.
If you’re comparing models with conversion in mind, a tested roundup of the best 2 burner propane gas cooktop options can save a return trip, since fuel setup varies between near-identical listings.
The steps aren’t a DIY free-for-all. Whirlpool’s separate “PROPANE GAS CONVERSION INSTRUCTIONS” document walks through converting from natural gas to propane — the orifice and regulator changes are fuel-specific and pressure-specified. Skip the exact manufacturer kit and you’re guessing at gas pressure, which is not a place to guess.
Two gates: if you’re on natural gas and buy an LP-only unit without a verified conversion path, there’s no workaround — return it. And one listing explicitly notes the natural gas pressure regulator and gas pipe are not included, so budget separately.
Also don’t assume burner count indicates fuel. Widths, cutout sizes, and voltage vary by model — a 12-inch class unit from one brand may run 115 V AC while another is wired differently.
Worth noting: the verified manufacturer pages and instructions here apply to US and Canada-market cooktops and US utility standards. Compatibility is set by your home’s installed gas service and the appliance’s factory configuration or conversion kit — not by how many burners it has.
FAQs
Can I run a propane cooktop on natural gas?
Not without the manufacturer’s conversion kit and instructions. The orifices and regulator are sized for propane’s pressure, so feeding it natural gas at a lower pressure typically produces weak or non-lighting burners. Attempting this without a documented kit voids your safety margin and usually your warranty too.
Does the conversion kit come in the box?
It depends on the listing. Some 2-burner units ship with LPG nozzles included, while others require you to confirm the kit separately — and at least one listing states the natural gas pressure regulator and gas pipe are not included. Check the “what’s in the box” section before ordering.
Is a 2-burner cooktop always convertible between fuels?
No. Fuel configuration varies by SKU, not just by brand. Some models are LP-only, some NG-only, and some are dual-fuel convertible. Always check the specific model’s fuel-type field and manual before assuming a switch is possible.
References & Sources
- Summit Appliance. “GCJ2SSLP 2-Burner Gas Cooktop Product Page.” Source for burner BTUs, dimensions, voltage, and the pre-set for LP specification.
- Whirlpool. “Propane Gas Conversion Instructions (W11168236 RevB).” Supports the 14 in. W.C.P. propane supply pressure and the natural-gas-to-propane conversion procedure.
- JennAir. “Installation Instructions (W11110989 RevC).” Confirms factory-set natural gas configuration and the requirement for a provided propane conversion kit.
