A heater needs a sound wall, cold-water supply, a safe valve drain and a dedicated grounded electrical point.
Choose capacity for the household and available space. Leave room to service the element and anode and provide an accessible water shut-off.
The wiring and water pressure should be checked before installation. Correct connection protects the appliance and makes maintenance easier.
For water-heater installation in Kyiv, provide the capacity, wall material and a photo of the proposed location. The plumber and electrician can then confirm the fixings, valves and circuit protection needed.