Water boilers

Ariston Blu1 R 50 L Vertical Water Heater 1.5 kW
In Stock
146.25€ / pc. Ex Tax: 117.94€ / pc.
Ariston Andris Elite 10 L Bottom Water Heater, 1.2 kW
In Stock
146.25€ / pc. Ex Tax: 117.94€ / pc.
Water heater Ariston Andris Elite 10L top 1.2 kW
In Stock
146.25€ / pc. Ex Tax: 117.94€ / pc.
Ariston Velis Pro 100 L Water Heater
In Stock
569.48€ / pc. Ex Tax: 459.26€ / pc.
Water heater Ariston Velis Pro Wi‑Fi 100 L EU V/H 1.5 kW
In Stock
439.00€ / pc. Ex Tax: 354.03€ / pc.
Water Heater Ariston Pro R Thermo 200 L 2.2 kW Vertical
In Stock
441.75€ / pc. Ex Tax: 356.25€ / pc.
Volume (L)
200
Orientation
Vertical
Power (kW)
2,2
Ariston Lydos WiFi 80 L Vertical Water Heater 1.8 kW
In Stock
243.75€ / pc. Ex Tax: 196.57€ / pc.
Volume (L)
80
Orientation
Vertical
Power (kW)
1,8
Water Heater Ariston Lydos Plus 100 L Vertical 1.8 kW
In Stock
276.75€ / pc. Ex Tax: 223.19€ / pc.
Volume (L)
100
Orientation
Vertical
Power (kW)
1,8
Ariston Lydos Plus 80 L Vertical Water Heater 1.8 kW
In Stock
239.00€ / pc. Ex Tax: 192.74€ / pc.
Volume (L)
80
Orientation
Vertical
Power (kW)
1,8
Ariston heating element 1.5 kW SE 10R 100
In Stock
30.32€ / pc. Ex Tax: 24.45€ / pc.
Water heater Ariston heating element 1.2 kW SE 5R 80
In Stock
30.32€ / pc. Ex Tax: 24.45€ / pc.
Water Heater Ariston Heating Element 2.2 kW 150 L
In Stock
34.92€ / pc. Ex Tax: 28.16€ / pc.
Ariston Boiler Thermostat SE 5R
In Stock
19.27€ / pc. Ex Tax: 15.54€ / pc.
Ariston heating element 1.5 kW SE 5R 100
In Stock
39.52€ / pc. Ex Tax: 31.87€ / pc.
Ariston boiler thermostat SG/NTS Art. 11209
In Stock
20.20€ / pc. Ex Tax: 16.29€ / pc.
Ariston BLU1 R 50 L Vertical Water Heater 1.5 kW
In Stock
146.25€ / pc. Ex Tax: 117.94€ / pc.
Ariston Lydos WiFi
In Stock
276.75€ / pc. Ex Tax: 223.19€ / pc.
Volume (L)
100
Orientation
Vertical
Power (kW)
1,8
Ariston water heater element 1.5 kW
In Stock
39.52€ / pc. Ex Tax: 31.87€ / pc.
Ariston Water Heater Heating Element 1.2 kW
In Stock
39.52€ / pc. Ex Tax: 31.87€ / pc.
Ariston water heater flange gasket 10/15/30 L
In Stock
4.28€ / pc. Ex Tax: 3.45€ / pc.
Ariston water heater flange + gasket 50, 80, 100 L
In Stock
12.56€ / pc. Ex Tax: 10.13€ / pc.
Boiler flange gasket PRO R, PRO PLUS 50-150L round
In Stock
6.40€ / pc. Ex Tax: 5.16€ / pc.
Water heater and Ariston thermostat 50-100L (Regent, Simat)
In Stock
30.32€ / pc. Ex Tax: 24.45€ / pc.
Ariston Thermostat Water Heater 30
In Stock
33.99€ / pc. Ex Tax: 27.41€ / pc.
Water heater Ariston heating element 1.8 kW
In Stock
39.52€ / pc. Ex Tax: 31.87€ / pc.
Ariston Blu1 R 80 L Vertical Water Heater 1.5 kW
In Stock
168.75€ / pc. Ex Tax: 136.09€ / pc.
Volume (L)
80
Orientation
Vertical
Power (kW)
1,5
Ariston Blu1 R 80L Horizontal Water Heater 1.5 kW
In Stock
169.00€ / pc. Ex Tax: 136.29€ / pc.
Volume (L)
80
Orientation
Horizontal
Power (kW)
1,5
Water Heater Ariston Blu1 R 100 L Vertical 1.5 kW
In Stock
179.00€ / pc. Ex Tax: 144.35€ / pc.
Volume (L)
100
Orientation
Vertical
Power (kW)
1,5
Ariston BLU1 R 100 L Horizontal Water Heater 1.5 kW
In Stock
191.25€ / pc. Ex Tax: 154.23€ / pc.
Volume (L)
100
Orientation
Horizontal
Power (kW)
1,5
Water heater Ariston Andris RS 30L top 1.5 kW
In Stock
139.00€ / pc. Ex Tax: 112.10€ / pc.
Volume (L)
30
Orientation
Top
Power (kW)
1,5
Water Heater Ariston Andris RS 15L Top-mounted 1.2 kW
In Stock
131.25€ / pc. Ex Tax: 105.85€ / pc.
Volume (L)
15
Orientation
Top
Power (kW)
1,2
Ariston Andris RS 15 L Bottom-Mounted 1.2 kW Water Heater
In Stock
131.25€ / pc. Ex Tax: 105.85€ / pc.
Volume (L)
15
Orientation
Bottom
Power (kW)
1,2
Ariston Andris RS 10 L Top Water Heater 1.2 kW
In Stock
123.75€ / pc. Ex Tax: 99.80€ / pc.
Volume (L)
10
Orientation
Top
Power (kW)
1,2
Ariston Andris RS
In Stock
119.00€ / pc. Ex Tax: 95.97€ / pc.
Volume (L)
10
Orientation
Bottom
Power (kW)
1,2
Ariston Andris Lux Eco 10 L Top 1.2 kW Water Heater
In Stock
146.25€ / pc. Ex Tax: 117.94€ / pc.
Volume (L)
10
Orientation
Top
Power (kW)
1,2

Frequently asked questions about the Water boilers category

What is an electric water heater?

It is a storage water heater in which water is heated by a built-in electric heating element. The water heater accumulates hot water in the tank and automatically maintains the set temperature.

What is the difference between an electric and an indirect water heater?

An electric water heater heats water independently, without connecting to a boiler or heat pump. An indirect water heater works only in conjunction with a heating system. An electric model is easier to install and suitable for any home.

What size water heater should I choose for my family?

For 1–2 people, 50–80 litres is sufficient; for a family of 3–4, 100–150 litres is recommended; for 5 or more people, 200 litres and above is advised. The greater the hot water consumption, the larger the capacity recommended.

How much electricity does a water heater consume?

Consumption depends on the tank volume and the power of the heating element. On average, a 100-litre water heater uses 1.5–2 kWh per heating cycle. Models with good tank insulation significantly reduce heat loss in standby mode.

What heating element power output should I choose?

The standard power output for domestic water heaters ranges from 1.5 to 3 kW. A more powerful element heats water faster but requires appropriate electrical wiring. For most apartments, 2 kW is the optimal choice.

What is the difference between a vertical and a horizontal water heater?

A vertical water heater takes up less floor space and retains hot water better in the upper part of the tank — this is the most common option. A horizontal model is convenient for low ceilings or limited space, for example when mounted under the ceiling in a bathroom. It is important to note that the position of the heating element and anode differs between the two.

How long does the heating element last and can it be replaced?

With normal water quality, the heating element lasts 5–10 years. Replacement is carried out without purchasing a new water heater — it is a standard maintenance procedure performed by a plumber.

Is a magnesium anode necessary in a water heater?

Yes, absolutely. The anode protects the tank from corrosion and significantly extends the service life of the water heater. It should be checked every 1–2 years and replaced when necessary.

Are there water heaters with Wi-Fi and mobile app control?

Yes, modern models support Wi-Fi connectivity and smartphone control. Using the app, you can set heating schedules, monitor temperature, receive notifications and track electricity consumption — all of which helps save energy and manage the water heater remotely.

Is it safe to use a water heater when there are pressure fluctuations in the water supply?

Yes, provided that a safety valve and expansion tank are correctly installed. These components are mandatory and protect the water heater from excessive pressure during the heating process.

Which internal tank lining is better — enamel, stainless steel or glass porcelain?

Each material has its advantages: an enamelled tank is affordable but sensitive to temperature fluctuations; stainless steel is durable and does not require an anode; glass porcelain coating is corrosion-resistant and ensures water purity. The choice depends on the water quality in your area and your budget.

How should a water heater be installed — vertically or horizontally?

Most models support both installation options, but it is important to verify this in the technical specifications of the specific model before purchasing. Incorrect orientation during installation may lead to improper functioning of the heating element and accelerated wear.

How do I order a water heater from Sitypro.com?

The right model can be found in the section 'Water Supply → Heating → Water Heaters' on sitypro.com. Delivery is available across Estonia. For order enquiries, call +372 536 16980 or leave a request on the website.