Yes, you can replace a glass stovetop, but the method depends on whether your cooktop is built-in or a standalone unit
A cracked or damaged glass stovetop can be replaced. The process is straightforward for a portable electric cooktop—you unplug it and buy a new one. For a built-in cooktop, the job is more involved: you'll need to remove the old unit from underneath the counter, disconnect the power or gas, and install a new one in its place. Most homeowners can handle a portable replacement themselves. Built-in replacements usually require a professional installer, especially if gas lines are involved.
The cost and difficulty depend on your cooktop type. A portable glass cooktop costs $40 to $150 and takes minutes to swap out. A built-in replacement runs $300 to $1,500 for the unit itself, plus $200 to $500 for professional installation. If your cooktop is under warranty, the manufacturer may cover the cost of a replacement glass top without replacing the entire unit—check your documentation first.
Key Takeaways
- Portable electric cooktops with glass tops can be replaced by unplugging the old unit and plugging in a new one, with no tools or professional help needed.
- Built-in cooktops require disconnecting power or gas lines and removing the unit from under the counter, work that typically needs a licensed installer.
- Some manufacturers sell replacement glass tops separately for less money than replacing the entire cooktop, so contact the maker before buying a new unit.
- If your cooktop is still under warranty, damage may be covered at no cost—check your warranty paperwork or the manufacturer's website.
- Measure your current cooktop's width, depth, and power requirements before shopping for a replacement to may support the new unit fits your space.
How to replace a portable glass cooktop
Unplug the old cooktop from the wall outlet. Let it cool completely if you've used it recently—glass stays hot for several minutes after you turn off the heat. Wipe the counter clean of any spills or debris, then set the new cooktop in place. Make sure the cord reaches the outlet without stretching or kinking. Plug it in and test each burner on low heat for 30 seconds to confirm it works.
The entire process takes less than five minutes. No tools are required. If the new cooktop doesn't fit in the same space—because it's a different size or shape—you may need to rearrange your counter setup or move the outlet, but the cooktop itself installs without any installation work.
How to replace a built-in glass cooktop
Built-in cooktops are fastened to the counter from underneath and connected to either a 240-volt electrical line or a gas line. Removing one requires you to access the space below the counter, which usually means opening a cabinet or crawling underneath. You'll need to disconnect the power or gas before you can lift the old unit out.
For electric cooktops, turn off the breaker that controls the cooktop at your electrical panel, then disconnect the wires from the terminal block inside the cooktop. For gas cooktops, turn off the gas valve and disconnect the flexible gas line with a wrench. Once power or gas is disconnected, remove the fasteners holding the cooktop to the counter from underneath, then lift the old unit out. Slide the new cooktop into place, reconnect the power or gas, and test each burner.
This work requires comfort with electrical or gas connections and access to the space below your counter. If you're unsure about any step, or if your cooktop is hardwired (not plugged in), hire a licensed electrician or gas technician. A professional can complete the job in one to two hours and will may support all connections are safe.
Measuring your cooktop before you buy
Measure the width and depth of your current cooktop in inches. Most standard cooktops are 30 inches wide and 21 inches deep, but some are 36 inches wide or have different depths. Measure from the outer edge of the frame, not the cooking surface itself. Write down the exact measurements and bring them with you when you shop, or use them to search online.
Check the power requirements as well. Electric cooktops use either 240 volts or 120 volts—your current cooktop's documentation or the breaker panel will tell you which. If you're replacing a gas cooktop with an electric one, or vice versa, you'll need to have new utility lines installed, which is a job for a professional. Stick with the same fuel type unless you have a specific reason to switch and budget for the additional installation cost.
When to replace just the glass top instead of the whole cooktop
Some cooktop manufacturers sell replacement glass tops separately. If your cooktop's burners, controls, and frame are still working but the glass surface is cracked or discolored, a replacement top costs $80 to $300 and takes 15 to 30 minutes to install. You remove a few screws or clips holding the old glass in place, lift it off, and set the new one down in the same position.
Check your cooktop's model number—it's usually on a sticker inside the unit or on the back—and search the manufacturer's website or call their customer service line. Tell them you need a replacement glass top for your specific model. If they sell one, they can ship it to you or direct you to a retailer. If they don't, or if the glass top costs nearly as much as a new cooktop, replacing the entire unit makes more sense financially.
Common mistakes to avoid when replacing a glass cooktop
Do not skip the cooling step with a portable cooktop. Glass holds heat longer than you expect, and touching a hot surface can cause burns. Wait at least 10 minutes after turning off the heat before you move or handle the cooktop.
Do not assume your new cooktop will fit without measuring. Cooktops come in different sizes, and a unit that's even an inch too wide or too deep won't sit flush with your counter. If the new cooktop is smaller than the old one, you'll have a gap; if it's larger, it won't fit at all.
Do not attempt to reconnect gas or hardwired electrical lines yourself unless you have experience doing so. A loose connection can cause a gas leak or electrical fire. A licensed professional costs money upfront but prevents expensive and dangerous problems later.
Do not throw away your old cooktop without checking if the manufacturer will take it back or if your local waste management accepts large appliances. Some retailers offer haul-away service when you buy a new cooktop.
What to do if your cooktop is still under warranty
Check your warranty paperwork or the manufacturer's website to see what damage is covered. Most warranties cover defects in materials or workmanship but not damage from accidents, misuse, or normal wear. If your glass top cracked from a fall or impact, it may not be covered. If it cracked on its own or the burners stopped working, the manufacturer may replace the unit at no cost.
Contact the manufacturer's customer service line with your model number and a description of the damage. They'll tell you whether the damage is covered and what the next step is. If it is covered, they may send you a replacement unit or a replacement glass top, or they may direct you to an authorized repair center. Keep your receipt and any documentation of the damage to speed up the process.
Frequently Asked Questions
Can I use my cooktop while waiting for a replacement?
If the glass is cracked but the burners still work, the cooktop is usually safe to use for a short time. However, a crack can spread quickly with heat, and broken glass can fall into food. If the crack is small and you're waiting for a replacement, cover the damaged area with a piece of tape as a temporary measure, but plan to replace the cooktop within a few days.
What's the difference between a glass top and a ceramic top?
Glass and ceramic cooktops look similar but are made from different materials. Glass is smoother and easier to clean, while ceramic is more durable and less likely to crack. When shopping for a replacement, check whether your original cooktop was glass or ceramic, and try to match it. The installation process is the same for both.
Do I need a special pan for a glass cooktop?
No. Any pan that works on a regular electric cooktop works on a glass cooktop. Flat-bottomed pans transfer heat more efficiently than curved ones, so your food will cook faster and more evenly. Avoid dragging pans across the surface, as this can scratch the glass.
How long does a professional installation usually take?
A professional can install a built-in cooktop in one to two hours, depending on how easily they can access the space below your counter and whether any electrical or gas work is needed. If new utility lines must be run, the job may take longer. Ask the installer for a time estimate before they start.
Can I install a cooktop myself if I have electrical experience?
If you're comfortable working with 240-volt circuits and have experience disconnecting and reconnecting electrical terminals, you may be able to install an electric cooktop yourself. However, if anything feels uncertain, hire a professional. A mistake with high-voltage wiring can cause injury or fire. Gas cooktops should always be installed by a licensed technician.