Why Induction Cycles On and Off When You Try to Hold a Simmer

Your hob is not faulty. On a low setting an induction zone stops heating steadily and starts working in cycles, full power for a few seconds and nothing for a few more, so that the average lands on the number you picked. That is why simmering is the job where you notice it: a sauce with 2 cups of thin liquid in a light pan answers every pulse, so it swings between a rolling boil and silence.

The fix is mass, a lid and three minutes of patience, not a service call. Cookware is half the answer, which is why the Houseland titanium pan's spec sheet is worth reading as an example rather than an advert: one uncoated body, a tempered glass lid sized to the pan you choose, and a listing that covers induction, gas, electric and ceramic.

What are these induction cycles, and why do they only show up when simmering?

They are the hob making a small number out of a big one. An induction coil has a minimum output it can run at, and everything under that floor is handed over as bursts of the floor with gaps in between, which averages out to the setting on the display.

One owner metered a cheap countertop unit and posted the figures on Ask MetaFilter. It advertised 15 steps from 100 W to 1,800 W, but only 600 W and above ran continuously. Ask it for 200 W and it ran at 600 W for 4 seconds, sat dead for 6, and repeated. A 200 W setting on that plate is really 600 W for 4 seconds in every 10. A 240 V unit in the same thread had a floor of 1,200 W and behaved identically below it.

The tick you can hear is the switch itself. The Induction Site describes a soft tick as the power controller cycles the elements on or off, and an answer on Seasoned Advice says the same thing from the cook's side: the low setting is achieved by pulsing the coil on and off over time, and because the transfer is so efficient the water in the pot changes temperature along with it unless the pot is large.

Simmering catches it because the target band is narrow. KitchenAid puts a simmer at 185 to 205 °F, against 212 °F for a boil. That leaves 7 °F between the top of a proper simmer and a rolling one, and a burst of 600 W into a shallow pan crosses 7 °F in seconds.

Is the hob faulty, or is this how low power works?

Both behaviours exist and they look different. Control cycling lives at the bottom of the dial and tracks whatever you set. The fault version turns up at the top of the dial, or with an empty pan, or on every zone at once.

GE's support note points at that middle row from the other direction: burners reduce power or shut down when the cooktop gets too hot, and the usual cause is a pan heated empty or boiled dry. Cycling that follows the dial is the control system doing its job; cycling that ignores the dial and repeats on every zone is a fault. Rule the cookware out first: the rest of that checklist sits in what to check before buying any pan for induction.

How do I hold a steady simmer on a hob that pulses?

Give the pot enough ballast to average the pulses out, then stop re-judging the setting every 30 seconds.

1. Boil it first, then step the setting down. Climbing to a simmer from cold on setting 2 means the hob spends the whole climb pulsing at its floor. Reach 212 °F on a high setting, then drop to 3, and the pan arrives already loaded with heat.
2. Wait 3 minutes before touching the dial again. A pot needs minutes to settle at a new average, and the usual mistake is a correction inside 30 seconds, which leaves you oscillating in time with the hob.
3. Put 4 cups of liquid in the pot rather than 2. Water is the buffer that absorbs each burst. Depth counts too: a shallow film across a wide base tracks every pulse.
4. Use the lid as your half-step. KitchenAid's guidance is that a covered pot reaches a simmer faster, and that a covered pot creeping towards a boil should have the lid taken off rather than the setting dropped. On a hob with only 9 steps, the lid is the finer of the two controls.
5. Test the smaller zone. In that MetaFilter thread the bigger appliance had the bigger floor: 600 W on an 1,800 W plate, 1,200 W on a 3,500 W one. The small ring you never use may hold a gentler average than the big one at the same displayed number.
6. Measure it once with a probe. Find which number on your own hob lands between 185 and 205 °F with your usual pot and your usual volume. The numbering is arbitrary from brand to brand, so yours is worth knowing rather than guessing.
7. Do not try to outsmart the coil. Sliding the pan off-centre does not lower the power, because the detection reads a pan that no longer covers the coil and switches the zone off. A diffuser disc does work, but it turns the zone into an ordinary hotplate, and the Induction Site notes those adaptors are less efficient, get very hot, and may be capped at a lower maximum power.

If a sauce caught on the base while you were fighting the dial, the starch and sugar come off with a warm soak rather than a scour: we set that out in how to clean burnt food off a hammered pan.

Does the pan decide how bad the surging feels?

The pan decides most of it. The hob's pulse is fixed by its electronics; what varies is how much the food notices, and that comes down to metal mass plus liquid.

Owners in the MetaFilter thread arrive at that from opposite ends. One with a two-burner Wolf says it does click on and off at low power, but that they mostly use heavy cast iron, which retains heat so well it has been a non-issue. Another, cooking in a rental on thin supplied pans, calls it a noisy, unevenly burned experience and puts the fix in one line: thick pans with a heat capacity measured in minutes.

The Induction Site draws the same line between constructions. Clad stainless spreads heat quickly and follows a change fast, while cast iron takes longer to reach equilibrium and then holds it. Fast-following is exactly what you want for a sear and exactly what you do not want under a pulsing low setting.

A thin pan holding 1 cup of sauce will show you every duty cycle; a heavy pan holding 4 cups will hide them all.

The Houseland titanium pan sits in the middle of that spread: a single uncoated body with a hammered cooking surface rather than a disc bonded to a thin shell, offered at 10.2 in (26 cm) across the cooking surface in Small and 11 in (28 cm) in Large, each with a tempered glass lid sized to that pan. The lid is the part that earns its keep at a simmer, since it is the control you can adjust between two power steps.

Bare metal has one habit worth knowing before you park it on a low setting for an hour. A long simmer with a starchy sauce is the classic way to make food grip an uncoated surface, and the answer is preheat and a little fat rather than a lower number: why a titanium pan starts sticking after a few uses works through it.

From the shop

Titanium Frying Pan, Uncoated, Induction Safe, with Tempered Glass Lid

One uncoated titanium body with a hammered cooking surface and no PTFE, PFOA or PFAS on it, in a 10.2 in (26 cm) Small or an 11 in (28 cm) Large, each supplied with a tempered glass lid sized to that pan. Listed for induction, gas, electric and ceramic, hand wash, wood or silicone utensils.

View the uncoated titanium pan — 2 sizes & current price

Does the same pan behave differently on gas, electric or ceramic?

Yes, and the difference is where the switching happens. Gas throttles the flame continuously, so a low setting really is low for the whole minute. A radiant electric or ceramic element switches on and off as well, but it does that through a mass of hot metal that stays warm through the gap, so the pot never feels the interruption. Induction generates the heat inside the base of the pan itself, which is why it answers a dial change in a second and why its gaps are the ones you can watch in the pot.

That is the practical reason the Houseland pan lists induction, gas, electric and ceramic on one line of its spec sheet. The pan does not change when it moves between them; the delivery does, and a cook who blames the pan for a surging sauce after switching to induction is blaming the wrong half of the pair.

What I'd do

Boil it, drop two steps below where instinct says, put the lid on, and walk away for 3 minutes. That one habit clears most of the complaints about induction at low power, because almost all of them are really complaints about judging a duty-cycled average after 20 seconds. Once the pot has settled, hold that number and adjust with the lid instead of the dial.

Then fix the pan rather than the hob, which is the cheaper half of the problem by a wide margin. Buy metal mass and a lid that fits its own pan, not more watts. Everything else in the kitchen and home collection gets bought on the same reasoning: what the metal does between the bursts is the part you actually taste.

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