On the volume of the water tank. If you plan to clean the entire apartment with this appliance, look for a steam cleaner with a capacity of at least 1.5-2 liters. For washing the stove or steaming clothes, a small manual steam cleaner with a volume of 300-500 ml is well suited.
On a complete set. Are you going to clean your clothes? Look for a device with a fabric nozzle and a special hanger. Accessory sets vary by model.
On the length of the cord. The device works only from the network. Cleaning the floor in a large room with a cord length of 1.5 m will not be easy!
For the duration of continuous operation. Steam cleaners can work for 10 minutes or 1.5 hours without interruption.
If you do not know how to choose a steam cleaner, pay attention to the following recommendations:

• ease of use depends on the configuration (nozzles, brushes, cable length);
• the duration of use depends on the capacity of the water tank and pressure;
• many budget devices are not inferior to premium ones with the exception of the scope;
• premium goods are suitable not only for the home, but also for offices, warehouses;
• there are steam cleaners designed for glasses, cars, clothes.

KARCHER SC 5 EasyFix

Source:https://ibraborg.com/angtvatt-bast-test/
Karcher SC 5 EasyFix is ​​the most powerful among steam cleaners. A 1.5 liter water tank heats up to full operating temperature in 3 minutes thanks to a power of 2200 watts. The kit comes with many nozzles for cleaning various surfaces, and protection against overheating and protection from children will make using the device safe.

Pros:

• Steam cleaner for large areas and difficult tasks: up to 150 m2 of clean surfaces before filling the tank (1.5 l).
• VapoHydro function: steam with hot water for effective removal of pollution (forced supply of 250 g / min).
• Convenient floor cleaning with a special nozzle with a flexible connection.
• Topping up water during the process, indication of insufficient water level.
• Child lock
• Safety valve, overheat protection.
• Mobility: 2-wheel base, 6 m power cable, 2.3 m steam hose.
• Possibility to connect a steam iron (optional).
• Heating in 3 minutes.
• Convenient storage: compartment for cable and accessories.
• Long warranty.

Cons:

• Steam flow controller only on the unit itself.
• Price.

Hoover CAD1700D

Powerful – 2200 watts. Steam production – 45 g / min. Tank capacity 1.5 l. Beautiful plastic case in blue and blue colors. The telescopic stand. Steam hose 1.5 m. Key control on the gun. Manual 2 meter cord winding. Creates a vapor pressure of 143 ° C in 4 atmospheres. Heats water in 2 minutes. It works for 1000 minutes. Light weight – 4.7 kg. Additional functions: steam supply is regulated, there is a safety valve and automatic shutdown, it turns off when there is not enough water in the tank. Storage compartment for nozzles.

Nozzles: scraper, spot, brush, for the floor, brushes with metal and polymer bristles, a towel from the towel, extension tubes, a holder for clothes, a measuring cup, for continuous operation the valve is topped up in the tank.

Pros:

• High build quality.
• You can add water during operation.
• Simple and convenient draining of water.
• Powerful unit, produces a strong stream of steam.
• High-speed heating.
• Excellent complete set.
• Steam flow adjustable.
• There is a system of protection against overheating, with a lack of working fluid.
• You can always buy branded supplies.

Cons:

• Short cord.
• Weak nozzle with a cloth.
• There is no mechanical winding of the cord.
• For steaming clothes is not suitable, makes it wet.