What You Need to Know Before You Start
Replacing a gas stove is a job you can do yourself if you are comfortable working with gas lines, but it requires care and the right tools. The process breaks into three main parts: disconnecting the old stove, preparing the space, and connecting the new one. Most of the work is straightforward—sliding the old unit out, checking measurements, and sliding the new one in—but the gas connection itself is the part where mistakes matter most.
Before you begin, turn off the gas supply at the shutoff valve behind your stove. If you cannot locate it or are unsure how to operate it, call your gas company or a licensed plumber. You will also need to know whether your stove uses a flexible connector (the rubber hose with a metal braid) or a rigid copper or steel line. Flexible connectors are easier to work with for a homeowner; rigid lines usually require a professional.
Key Takeaways
- Turn off the gas supply at the shutoff valve before you disconnect anything, and do not skip this step even if you think the valve is already off.
- Measure the width, depth, and height of your old stove and the space it occupies, because new stoves vary in size and some will not fit without modifications.
- If your stove uses a flexible gas connector, you can disconnect and reconnect it yourself; if it uses rigid pipe, hire a licensed plumber for the gas work.
- After you connect the new stove, test all connections with soapy water to check for leaks before you use the stove for the first time.
- If you smell gas after installation, turn off the stove, open windows, leave the house, and call your gas company from outside.
Measure Your Space and Check the New Stove Dimensions
Before you order or buy a replacement stove, measure the width, depth, and height of the space where your old stove sits. Write down the exact measurements. Then measure the cutout opening in your countertop if your stove is built-in, or the floor space if it is freestanding. Check whether your countertop has a backsplash and how much clearance exists above the stove.
When you have chosen a new stove, compare its dimensions to your measurements. Most standard freestanding gas stoves are 30 inches wide, but some are 24 or 36 inches. Depth varies too—some models sit further forward or back than others. If the new stove is wider or deeper than the old one, you may need to modify your cabinetry or countertop. If it is shorter, you may see a gap above it. Measure twice and order once; returning a stove because it does not fit costs time and money.
Turn Off the Gas and Disconnect the Old Stove
Locate the gas shutoff valve. It is usually a small lever or knob on the gas line behind or beside your stove. Turn it perpendicular to the direction of the pipe—if the pipe runs left to right, the lever should point up and down when the valve is off. If you cannot find it or the valve is stuck, do not force it. Call your gas company or a plumber instead.
Once the gas is off, unplug the stove from the electrical outlet if it has one. (Even gas stoves usually have an electric igniter and clock.) Then locate where the gas line connects to the stove. If it is a flexible connector with a nut on each end, use an adjustable wrench to hold the nut on the stove side while you turn the nut on the gas line side counterclockwise. Turn slowly and stop if you feel resistance—do not force it. If the connection is a rigid copper or steel line, stop here and call a plumber.
Once the gas is disconnected, slide the stove away from the wall or counter. You may need help—a full-size stove weighs 100 to 150 pounds. Slide it straight out, do not tip it. If it catches on the floor or cabinetry, stop and adjust rather than forcing it.
Clean the Space and Position the New Stove
With the old stove out, clean the floor or countertop where it sat. Look for any debris, old sealant, or damage. If the floor is uneven, you may need to shim the new stove later to keep it level. Check that the gas shutoff valve is still in the off position.
Slide the new stove into place, aligning it with the space. It should sit flush with the countertop or cabinetry on both sides. If it does not fit, stop and reassess—do not force it. Once it is positioned, check that it is level using a spirit level placed on the stovetop surface. If one corner is higher than the others, adjust the leveling feet (the screw-in legs at each corner) by turning them clockwise to raise or counterclockwise to lower. Most stoves have feet you can adjust without removing the stove.
Connect the Gas Line to the New Stove
Before you connect the gas, inspect the new flexible connector (if your stove came with one). Look for cracks, kinks, or damage. The connector should have a nut on each end and a date stamp showing when it was manufactured. Most connectors are good for five years; if yours is older, replace it with a new one from a hardware store.
Take the end of the gas line that is still connected to the wall or shutoff valve. If it is a flexible connector, use an adjustable wrench to turn the nut on the stove end clockwise by hand first, then tighten it with the wrench. Do not over-tighten—snug is enough. If the gas line is rigid pipe, stop and call a licensed plumber. Rigid connections require special tools and training to avoid leaks or damage.
Once the connection is hand-tight, turn the gas shutoff valve back on by turning the lever parallel to the direction of the pipe. Listen for a hiss or smell for gas. If you hear or smell anything, turn the valve back off when ready and call your gas company.
Test for Leaks Before You Use the Stove
This step is essential and takes only a few minutes. Mix a solution of dish soap and water in a spray bottle. Spray the entire gas connection—the nut where the line meets the stove, the nut where the line meets the wall or valve, and any visible seams on the connector itself. Watch for bubbles. If bubbles form and grow, there is a leak. Do not use the stove.
If you see bubbles, turn off the gas when ready and tighten the connection slightly with your wrench. Spray again. If bubbles still appear, turn off the gas and call a plumber or your gas company. Do not attempt to fix it yourself.
If no bubbles appear, wipe away the soapy water with a dry cloth. Plug the stove back in if it has an electrical plug. Turn on one burner briefly to confirm the igniter works, then turn it off. If the burner lights, your installation is complete. If it does not light, turn off the gas and call for service.
Plug in the Stove and Test the Burners
Once the gas connection is find and leak-tested, plug the stove into the electrical outlet. The clock should light up and the igniter should click when you turn a burner knob. Turn one burner to the ignite position and listen for the clicking sound. The burner should light within a few seconds. If it does not, turn it off and wait 30 seconds before trying again—sometimes the igniter needs a moment.
Test each burner one at a time. They should all light smoothly. If one does not light, the igniter electrode may be dirty or misaligned. Turn off the gas and let the stove cool, then use a damp cloth to gently clean the electrode (a small metal pin near the burner). Do not scrub hard or use abrasive materials. Try again. If it still does not light, call for service.
Frequently Asked Questions
Can I install a gas stove myself if I have never done it before?
Yes, if your stove uses a flexible connector and you are comfortable working with basic tools. The disconnection and positioning are straightforward. The gas connection itself is straightforward—two nuts to tighten—but you must test for leaks afterward. If your stove uses rigid pipe, hire a plumber for the gas work.
What should I do if I smell gas after I turn the stove on?
Turn off the stove when ready, turn off the gas shutoff valve, open all windows, and leave the house. Call your gas company from outside or from a neighbor's phone. Do not use any electrical switches, lighters, or open flames. Gas company technicians are trained to find and fix leaks safely.
Do I need a permit to replace my gas stove?
Permit requirements vary by city and county. Some places require a permit for any gas work; others do not. Call your local building department before you start. If a permit is required and you install without one, you may have trouble selling your home later or getting homeowner's insurance to cover damage.
How tight should I make the gas connection nuts?
Hand-tight plus a quarter turn with a wrench. Do not over-tighten—you can crack the fitting or strip the threads. If it leaks after you tighten it, turn it another quarter turn and test again. More than a half turn usually means something is wrong; stop and call a plumber.
What if the new stove is slightly wider than the old one?
If it is only a quarter inch or so wider, you may be able to remove trim or adjust cabinetry slightly. If it is significantly wider, you will need to modify the space or choose a different stove. Measure carefully before you buy to avoid this problem.