Wipe AGA enamel while it is warm with a damp soapy cloth, keep acids and oven cleaner off it, and save the wire brush for the cast-iron plates. A proper deep clean needs the cooker off for 12–24 hours first.
Start with the cool-down
An AGA is a heat-storage cooker. The burner or element keeps a cast-iron core at cooking temperature around the clock, and that core carries on radiating for hours after the fuel stops, which is why every proper AGA clean starts the night before, with the cooker switched off, the lids up and the doors open so the iron can shed its heat overnight. Trade guidance is to allow 12–24 hours for the metal to reach room temperature. Electric models cool quicker than oil-fired ones, but the iron still wants most of a night.
Hot cleaning fails twice over: degreasers flash off before they can work, and AGA's care advice says never to put a cold wet cloth on hot enamel, since vitreous enamel is glass and glass hates thermal shock.
Know which surface you are touching
Most AGA damage we see is the right product on the wrong surface. There are three surfaces.
- Vitreous enamel
- The coloured skin on the front, doors and top plate: glass fused onto cast iron. Damp soapy cloth, buff dry, and a Vitreous Enamel Association approved cleaner for marks. Acid, caustic sprays and grit damage it for good.
- Bare cast iron
- The boiling and simmering plates and the oven interiors. Heat keeps them clean by carbonising spills; the wire brush takes the crust off. Dry anything wiped damp before the lids close, or rust spots follow.
- Chrome and stainless brightwork
- The lid domes and front rail. A damp cloth, then a proper stainless polish for shine; cream cleaners scratch chrome. The lids are packed with insulation and must never be soaked or submerged.
Enamel dos and don'ts
AGA's daily advice is one line: wipe the enamel with a damp soapy cloth, then a dry one to make it shine. Products are where owners go wrong. Oven sprays are caustic and dull enamel permanently, so AGA says never to use them; the same caution covers limescale removers and gritty bathroom creams.
Milk is the enemy.
So are orange juice, wine and tomato. Acid on warm enamel starts etching straight away, which is why AGA says wipe such spills up immediately rather than after dinner.
Where the wire brush belongs
The wire brush frightens new owners, and the fear is misplaced: AGA supplies one, for the plates. Spills on the boiling and simmering plates carbonise in minutes, and a firm pass with the brush lifts the crust off bare cast iron without harm. The same brush handles burnt-on spills inside the cast-iron ovens, which otherwise keep themselves respectable by carbonising everything to a dust you sweep out with a soft brush.
The myth worth killing is the opposite one: that the brush is safe everywhere. It must never touch the enamel, where one careless stroke leaves scratches that stay.
A working AGA routine
Little and often is the whole trick.
| When | Job |
|---|---|
| After cooking | Soapy wipe of the top plate and lid domes while warm, buffed dry |
| The moment it happens | Acid spills (milk, juice, wine, tomato) off the enamel at once |
| Weekly | Wire-brush the plates, sweep carbon dust from the ovens, wipe the door fronts |
| Monthly | VEA-approved cream on stubborn marks, polish on the chrome, front rail cleaned |
| Once a year | Switch off overnight for a deep clean, ideally in the same window as the service |
Servicing is not cleaning
The two get booked interchangeably and they are different trades. A service is mechanical: an engineer checks and sets the burner or elements, wicks, flueways and seals, and touches nothing for cosmetic reasons. AGA's published schedule is a service every six months for oil-fired models and every twelve for gas, with electric models on longer intervals that vary by type, so your handbook has the final word.
A clean is everything the engineer ignores: enamel, plates, door linings, lids. People ask us on 020 8077 5225 whether one visit covers both, and it does not, ours or anyone's, but the shutdown is the same for each, so pairing them in one summer window spares a second day of cold toast. Where the AGA sits in the kitchen calendar is in our guide to how often ovens need cleaning.
Common questions
Can you clean an AGA while it is still on?
The daily wipe, yes: warm enamel and a warm soapy cloth suit each other, and the plates can be brushed at temperature. A deep clean, no. Product flashes off hot metal before it works, and the ovens sit at roasting heat all day.
What shifts burnt milk from AGA enamel?
Caught fresh, a damp soapy cloth and nothing else. Baked on, a VEA-approved enamel paste worked patiently. If a matt shadow stays in the gloss once the mark has gone, the acid has etched it, and etching is permanent.
How often should an AGA be serviced?
Every six months for oil models and every twelve for gas, per AGA's guidance; electric models vary by type, so check the handbook. A clean is not a service, and a service degreases nothing.
When the routine has slipped too far, we do the full version of it. A two-oven AGA is £143, fixed when you book: the cooker goes off the night before, the enamel, plates, lids and cast-iron ovens are cleaned by hand with non-caustic products, and the AGA is re-lit and checked before we leave. The method is on the AGA cleaning page and every price is on the price list.