The image on the right is recirculating air. This is because the air is being pulled into the system, filtered, and then pushed back into the room. This process allows the air to be cleaned and reused, rather than being drawn in from the outside. Recirculating air systems are often used in buildings to improve air quality and energy efficiency. **

A recirculating range hood works by pulling in the air and smoke from the cooking area through a filter, which then removes the grease, odors, and other particles from the air. The cleaned air is then recirculated back into the kitchen. This type of range hood does not vent the air outside, so it is important to regularly clean or replace the filters to maintain its effectiveness. Recirculating range hoods are a good option for kitchens where venting to the outside is not possible. **

To install a recirculating range hood, start by turning off the power to the range hood and removing the old hood if necessary. Next, position the new hood in place and mark the locations for the mounting screws. Drill pilot holes for the screws and then secure the hood in place. Connect the ductwork if necessary, and then plug in the power and test the hood to ensure it is working properly. Finally, adjust the settings and filters as needed for optimal performance. **

To convert an extractor hood to recirculating mode, you will need to remove the existing ducting and install a recirculating kit. This typically involves fitting a charcoal filter to the hood to trap grease and odors before recirculating the air back into the kitchen. You may also need to adjust the settings on the hood to ensure it is operating in recirculating mode. It's important to follow the manufacturer's instructions and seek professional help if you are unsure about the process. **

Electricians typically repair washing machines because they are equipped to handle electrical components and wiring within the machine. Plumbers, on the other hand, specialize in water-related issues such as leaks, clogs, and pipe installations. If a washing machine is experiencing electrical problems, it is best to contact an electrician for repairs. **

Electricians, plumbers, and roofers typically earn more than social workers. These trades require specialized skills and training that are in high demand, leading to higher earning potential. Social workers, on the other hand, often work in the non-profit sector or government agencies where salaries may be lower compared to skilled trades. Additionally, electricians, plumbers, and roofers can often work independently or start their own businesses, which can also contribute to higher earnings. **

Plumbers typically work full-time hours, which can range from 40 to 50 hours per week. They may also work evenings, weekends, and holidays, especially in cases of emergencies. The hours can vary depending on the specific job requirements and the plumber's workload. Overall, plumbers have a demanding job that often requires long hours to meet the needs of their clients. **

Yes, in the German Democratic Republic (GDR), restaurants and hairdressers were also operated under the state-controlled planned economy. The government controlled all aspects of these businesses, including the prices of services and the availability of supplies. This meant that the quality and variety of offerings in these establishments were often limited, as they were subject to the constraints of the centrally planned economy. Additionally, the state also had a significant influence on the hiring and management of employees in these businesses. **