Neva 4510-M

Advantages: The main function is water heating. It works quietly, turns on with a small water pressure, shows the temperature.

Disadvantages: Not yet revealed.

Comment: I use about a year, everything works, nothing leaks. A set of batteries is not required to replace. He put the gasman, said that the design of the heat exchanger is more reliable than that of just 4510, and indeed it is all different inside.

Advantages: compactness

Disadvantages: the column does not light when on on the middle position of the water flow adjustment and is very hot.

Comment: The column does not light up with on. on the middle position of the water flow adjustment (water consumption is more than 8 liters per minute), while in the bath it turns on without problems. For example, the Oasis column is turned on at a lower water supply and heats up much less and more quiet. There is something to compare. Inside the Neva, everything is so flimsy.

Advantages: Compact. Auto ignition of the flame from the batteries. Water control systems for overheating.

Disadvantages: Shaky wobbly design. Internal pipe joints are made not on the thread, but on elastic bands and sealant, secured with clamps, inserted into the slots.

Comment: I installed the column myself. After mounting and tightening all the connections with the necessary effort, and a test run of the system, the heat exchanger connections on the hot water outlet began to flow. Oh my God!! what to do? 9000 rubles thrown on smark ?? But everything turned out minor repairs connections column. During installation, she trembled like an aspen leaf. Metal fasteners at ultimate strength. 3 days after installation - normal flight works fine. After the "Gorky" Soviet column, a miracle. Heats water. Noise within acceptable limits. Lights with a faint bang. In general, I was satisfied. I am glad that I did not buy a more powerful one, because I have a flow rate of water at the entrance to the system of only 7 l / min.