The AGA is unlike any other cooker on the market — a cast iron, heat-storage cooker that operates on a principle fundamentally different from conventional appliances. When an AGA develops a problem, it requires a technician who truly understands its unique engineering. At Cooker Repair, we have that expertise.
How an AGA Cooker Works
An AGA is a heat-storage cooker — meaning it stores heat in its cast iron body and releases it continuously rather than generating heat on demand. Traditionally fuelled by solid fuel or oil, modern AGAs are also available in gas and electric versions.
The AGA maintains a constant internal temperature across its ovens and hotplates at all times. A thermostat regulates the heat source — burner or electric element — to keep the cast iron mass at its target temperature, typically around 200–250°C in the roasting oven and somewhat lower in the simmering oven. Because the cooker is always at temperature, it is ready to cook at any moment without preheating.
The hotplates on top are directly heated by the cast iron and covered by insulating lids when not in use to conserve heat. Boiling and simmering happen directly on the hotplate surface. The ovens — typically two to four in number — differ in temperature from hottest (roasting) to coolest (warming), with their temperature determined by their position relative to the heat source.
Key components include: the heat source (burner or electric element), the heat-storage cast iron body, the thermostat, hotplate lids and surfaces, oven door rope seals, and the flue or ventilation system.
Common AGA Cooker Issues We Fix
| Problem | Likely Cause | Our Fix |
|---|---|---|
| AGA losing temperature | Failing burner, thermostat fault, or heat loss | Burner service or thermostat replacement |
| Burner not igniting (oil or gas model) | Faulty igniter or burner component | Igniter or burner component replacement |
| Electric element not heating (electric model) | Failed heating element | Element replacement |
| AGA going out repeatedly | Blocked flue, faulty thermostat, or fuel issue | Flue cleaning, thermostat repair, or fuel check |
| Hotplate not hot enough | Low overall temperature — thermostat fault | Thermostat recalibration or replacement |
| Excessive fuel consumption | Thermostat keeping burner on too long | Thermostat replacement |
| Oven door not sealing | Worn door rope seal | Door seal replacement |
| Smoke or fume leakage | Blocked or deteriorated flue | Flue inspection and cleaning |
| Sooting of cast iron surfaces | Incomplete combustion — burner issue | Burner service and adjustment |
| Oil pump fault (oil model) | Worn or blocked oil pump | Pump servicing or replacement |
The AGA Philosophy of Repair
AGA owners are deeply attached to their cookers — and for good reason. A well-maintained AGA can last for many decades. Genuine AGA repairs, using the correct parts and following the manufacturer’s engineering principles, are always preferable to improvised solutions. Our technicians respect the integrity of these iconic appliances and service them accordingly.
Why Choose Cooker Repair?
We understand the AGA’s unique heat-storage principles and have hands-on experience with oil, gas, and electric AGA models. We treat your AGA with the specialist care it deserves.
Get in touch with us today:
📞 Phone: 0101 763 173 🌐 Website: cookerepair.com 📍 Address: Kangari Hse, Luthuli Avenue, Nairobi
Your AGA deserves specialist care — call Cooker Repair and keep the warmth alive.
