tumble dryer in garage problems

Installing a tumble dryer in a garage can be a practical solution for homes with limited indoor space. However, this setup presents unique challenges, particularly regarding appliance specifications, electrical requirements, and environmental factors. This article explores these challenges and offers solutions to ensure safe and efficient operation.

Tumble Dryer Types and Garage Environment

  1. Choosing the Right Dryer Type: There’s a debate between using a condensing or vented tumble dryer in a garage. A condensing dryer might increase humidity and cause condensation on cold metal objects in the garage, whereas a vented dryer requires external venting.
  2. Dealing with Low Temperatures: Tumble dryers in garages may face performance issues in freezing temperatures. While condensing dryers could have issues with water freezing and damaging the machine, lower ambient temperatures generally do not affect the operation of the dryer.
  3. Space and Ventilation Considerations: Garages typically provide adequate space for a tumble dryer, and good ventilation is essential, especially if considering a vented dryer. Ensure the garage is well-ventilated to handle the dryer’s exhaust.

Electrical Specifications and Safety

  1. Understanding Power Requirements: There’s confusion regarding the power consumption of tumble dryers, often mixing up kW (kilowatts) and kWh (kilowatt-hours). Most household tumble dryers in the UK come with a fitted 13A plug, suggesting their power requirement doesn’t exceed 3kW.
  2. Circuit Capacity and Cable Sizing: For a dryer with a significant load (around 4.2kWh per cycle), the existing 2.5mm cable with a 20A MCB could be sufficient. However, it’s crucial to consider the total cable length and installation method for voltage drop concerns.
  3. Addressing Fire Hazards: The risk of ignition from tumble dryers in a garage, especially near combustible materials like petrol, is a concern. Ensure the lint filter is regularly cleaned to prevent fires, and consider the placement of the dryer away from potential flammable vapors.

Practical Tips and Precautions

  • Check the Dryer’s Specifications: Verify whether the tumble dryer is actually 4.2kW in power or 4.2kWh in energy consumption per cycle. Most residential dryers are less likely to have a 4.2kW rating.
  • Heating Element Safety: Understand that in a condensing dryer, the air circuit heated by the element is a closed loop, reducing the risk of igniting flammable vapors.
  • Install an Adequate Outlet: If the dryer’s load demands, consider installing a 20A DP Switch and ensuring it’s protected by the 20A MCB or an RCBO. If the MCB is not RCD protected, it should be replaced with an RCBO for added safety.
  • Consider Temperature Fluctuations: Be prepared to dry clothes indoors during extremely low temperatures, as performance issues might arise in the garage setting.


Installing a tumble dryer in a garage is a viable option for many homeowners. Choosing the appropriate dryer type, understanding the electrical requirements, and considering environmental factors like temperature and ventilation are critical for safe and effective operation. Regular maintenance, especially cleaning the lint filter, and being aware of potential fire hazards, are essential for preventing accidents. With careful planning and adherence to safety guidelines, a tumble dryer can function efficiently in a garage setting.

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