Is My Glass Teapot Stovetop-Safe? (What Borosilicate Really Means)

Some glass teapots can sit on a flame; others can’t. The key is borosilicate glass and a few simple rules. Here’s how to check, how to heat safely, and what not to do.

Step 1 — Check the Spec

• Look for “borosilicate glass” and the phrase “stovetop-safe” on the product page.
• If it isn’t explicitly marked stovetop-safe, treat it as not stovetop-safe—use a kettle to heat water instead.

What Borosilicate Means

Borosilicate has a low thermal expansion, so it better tolerates temperature swings than ordinary glass. It’s the same family used in lab beakers.

Safe Heating Rules

1. Low–medium heat only. High flames are unnecessary and risky.
2. Use a diffuser on gas or coils to spread heat evenly.
3. No induction unless the pot specifically includes a metal base.
4. Avoid thermal shock: don’t add cold liquid to a hot pot (or hot liquid to a cold pot). Warm the teapot with a splash first.
5. Dry exterior. Keep the bottom dry before it meets heat.

How to Heat, Step-by-Step

1. Rinse the teapot with warm tap water to pre-warm.
2. Place on a diffuser; start at low heat.
3. Add room-temp water and bring gently to brewing temp.
4. Remove from heat before adding cooler water or leaves.

Common Mistakes (and Fixes)

• Crack at the base: likely thermal shock—slow down heating, pre-warm first.
• Cloudy film: mineral deposits—soak with warm vinegar water, rinse well.
• Metallic taste: rarely from mesh; rinse thoroughly and avoid harsh detergents.

FAQ

Can I microwave a glass teapot? Only if the listing says microwave-safe and no metal parts are attached.

Can I use it on induction? Not unless it specifically states induction-compatible.

Stovetop-Safe Picks

1. 800 ml Borosilicate Teapot — Stovetop-Safe
2. 1000 ml Glass Teapot — Glass Basket (Gentle Heating)

See all glass teapots and our glass teapots with infuser. 

Next, read our guide on which size glass teapot to buy and choosing between a glass basket or stainless infuser.