Published March 24, 2026 Uncategorized

The Most Common Causes and What to Do About Them

If your oven has started smoking every time you turn it on, you’re not alone. It’s one of the most common calls we get at Oven Cleaners Norfolk, and in most cases the cause is straightforward. Here’s what’s usually behind it and what you can do.

1. General grease build-up

The most common reason an oven smokes is simply that it’s overdue a clean. Over time, fat and food residue coat the interior walls, the base, the door glass and the ceiling of the oven. When the oven heats up, all of that grease heats up with it — and it smokes.

You might not notice it gradually getting worse, but there comes a point where the build-up is heavy enough that every time you cook, your kitchen fills with smoke. That’s usually the moment people pick up the phone.

A thorough professional clean removes that build-up completely. The oven is back to cooking cleanly, with no smoke and no smell.

2. The hidden grill problem

This one catches a lot of people out, particularly with single ovens that have a grill built into the top of the main oven cavity.

Because most people use the oven far more than the grill, the grill element and the area around it can get forgotten. Every time you roast a chicken or cook something with fat, that fat spatters upwards and coats the grill element and the roof of the oven. If the grill is never used, that fat just sits there, building up over months or years.

Then one day you either turn the grill on, or the fat builds up to the point where even the oven heat is enough to start cooking it — and it smokes badly.

What you can do: If you suspect it’s the grill element, turn the grill on full and let it run. It will smoke — quite a lot. Open the windows, keep the kitchen ventilated, and let it burn off. What you’re doing is carbonising the fat so it turns to ash rather than continuing to smoke as grease. Once it’s cooled down, you can wipe out the flakes that remain.

If that doesn’t clear it, or if the build-up is too heavy to burn off safely, it needs a proper clean — either yourself if you can access the area, or by a professional.

3. Fat behind the fan back plate

This is the one most people never think of, and it’s surprisingly common in fan ovens.

At the back of the oven there’s a metal plate that covers the fan. Every time you cook something fatty, small amounts of fat and moisture get pushed around the oven by the fan — and some of it ends up behind that back plate. You can’t see it, you can’t easily reach it, and so it just keeps building up.

Over time that hidden fat gets cooked and recooked every time you use the oven. Eventually it starts to smoke, and because it’s hidden from view it can be difficult to work out where the smell or smoke is coming from.

This is one of the main reasons a professional clean makes such a difference. We remove the back plate as part of the clean and deal with what’s behind it properly — something that’s very difficult to do yourself.

When to call a professional

If your oven is smoking and a basic wipe-down hasn’t helped, it’s usually a sign that the build-up has gone beyond what household products can shift. A professional clean deals with all three causes above — the general grease, the grill area and behind the fan plate — and gets the oven back to working as it should.

We cover all of Norfolk from our base in Fakenham. If your oven has started smoking and you’d like it sorted properly, give us a call on 07545 915652 or use the contact form.

Prices start from £65 for a single oven and £95 for a double oven. Range cookers, AGAs and Rayburns are quoted individually.