Vertical and horizontal boilers, comparison and differences, which placement is better in the existing conditions of the house

The type and location of your boiler are important factors in efficiently heating your home. Knowing the differences between vertical and horizontal boilers is crucial, whether you’re building a new house or trying to upgrade your current heating system. Each has benefits and drawbacks, so the best option for you will depend on your unique situation.

As the name implies, vertical boilers are made to stand vertically and take up less floor space than their horizontal counterparts. They are perfect for homes with limited space, like apartments or smaller houses, because of their vertical orientation. To maximize space efficiency, they can be installed in confined spaces like kitchen cabinets or utility closets.

However, because they are arranged horizontally, horizontal boilers usually take up more floor space. They provide additional benefits, particularly in terms of accessibility and maintenance, even though they might not be as space-saving as vertical boilers. For homeowners looking for convenience, horizontal boilers frequently offer easier access for maintenance and repairs.

The arrangement and available space in your house are important factors to take into account when choosing between vertical and horizontal boilers. Horizontal boilers might be a better option for larger homes with plenty of installation space, but vertical boilers work well in small spaces with limited floor area. It’s also important to consider things like the current heating system, ventilation needs, and accessibility for maintenance and installation.

The ideal location for your boiler ultimately depends on your particular needs and preferences. You can choose the best option for your house by speaking with a heating specialist. You may make an informed choice that guarantees effective heating and comfort in your house by being aware of the distinctions between vertical and horizontal boilers and taking your unique demands into account.

Horizontal boilers

Sanitary facilities, or bathrooms, are typically small spaces with a few square meters dedicated to water heaters. The appliance’s ergonomics must take into account the constraints imposed by the room’s shape. Under these conditions, a horizontal tank performs better.

When installing electric boilers with horizontal storage is appropriate:

  • A vertical tank of the desired volume cannot be placed due to lack of space or room geometry;
  • It is decided to save space for users (in showers, bathrooms, toilets) or for other equipment, e.g. by hanging the boiler at the top of the room;
  • Aesthetic preferences: a compact, flat boiler placed in a niche along the ceiling is less noticeable.

Pros and cons of horizontal boilers

There is one drawback to horizontal electric boilers. Although they have the same technical specifications as the vertical type, they heat more slowly because of differences in tank placement and design that affect how water of different temperatures is mixed (incoming and already heated water contained in the tank).

The impact of the enclosure’s horizontality on the performance of the water heater:

Element, the shape of the content Description
FET In a vertical tank the placement of the heater is more efficient, the action covers a significant volume of the contents. In a horizontal housing, there is more liquid on the sides of the heater, it warms up slower.
Water volume Horizontality is less favorable for efficient mixing, heat spreading.
Pipes, inlet/outlet connections Location and small gap between connections causes rapid mixing of different-temperature layers, which creates a delay in heating. This is especially noticeable if the spigots are located not on the side, but at the bottom.

The already heated water cools more quickly if the vessel is horizontal because the contact area between the incoming cold liquid and the outgoing hot liquid is increased (as much as possible). This is because the mixing of different temperature layers occurs intensely and too quickly.

This drawback is only noticeable when mixing continuously and very actively. When the heated water from the tank is completely removed before filling the bath, for example, the temperature of the already warm layer drops in an accelerated manner, as can be seen. The liquid then becomes slightly colder.

The heating process happens instantly at regular consumption. There is no difference in the quality of operation in any other parameter. eliminates the drawback of mixing protection, which is a feature of all high-quality water heaters.

Because the splitter is positioned at the bottom, where the heater is located, it prevents the inlet cold stream from beating vertically. There is still a layer of heated material at the top, whose temperature is not significantly impacted by the liquid that is entering. Therefore, if installing a horizontal electric boiler is convenient given the circumstances, you shouldn’t object to doing so.

  • slightly more expensive;
  • can be observed (very rarely) problematic operation at low pressure in the water supply system.

Benefits of water heaters with horizontal storage:

  • the flat, compact shape allows installation in narrow recesses, closer to the ceiling;
  • Mount the tank can be mounted near the ceiling and on the floor, that is, the range of places is expanding;
  • The water supply can be located on the side or at the bottom;
  • Aesthetically pleasing – the unit can look like an attractive looking rectangular object with a digital display hanging above the bathroom door;
  • the size of the horizontal boiler is larger: when installed under the ceiling, the tank does not take up as much space as a vertical design installed closer to the floor.

A few of the most well-liked models of horizontal water heaters available:

  • Timberk SWH FSL2 80 HE;
  • Polaris Vega IMF 80H;
  • Thermex Flat Plus IF 50H;
  • Thermex Champion Silverheat ERS 80 H;
  • Electrolux EWH 100 Royal H.

The choice between horizontal and vertical boilers is influenced by a number of variables, such as heating efficiency, ease of installation, and available space. Vertical boilers are ideal for vertical installations or cramped spaces because of their tall design, which requires less floor space but more headroom. Conversely, horizontal boilers are level, making them perfect for spaces with low ceilings or lots of floor space. Comprehending the distinctions can aid homeowners in optimizing their heating system according to the design of their home and the resources at hand.

Vertical Boilers Horizontal Boilers
Vertical boilers are designed to stand vertically, occupying less floor space. They are ideal for homes with limited horizontal space. Horizontal boilers lie horizontally, often installed in basements or utility rooms. They may require more floor space but offer easier access for maintenance.
Vertical boilers are efficient for homes with tall, narrow spaces, such as apartments or small houses. Horizontal boilers are suitable for wider spaces and can be easier to install in certain configurations.
Vertical boilers may have higher efficiency due to better natural convection flow. Horizontal boilers may require additional pumps for proper circulation, potentially increasing energy consumption.
Vertical boilers can be installed in areas where vertical venting is preferred, such as in multi-story buildings. Horizontal boilers may require more complex venting systems, especially if installed in basements or crawl spaces.
Vertical boilers can be more challenging to service or repair due to their compact design and limited accessibility. Horizontal boilers often offer easier access to components for maintenance and repairs.

Making the decision between vertical and horizontal boilers can have a big impact on how effectively your home is heated. Each option has pros and cons of its own, and the best decision for you will depend on your unique situation. To assist you in selecting the optimal boiler placement for your home, let’s examine the similarities and differences between vertical and horizontal boilers in more detail.

Because of their space-saving design, vertical boilers are a great option for homes with small floors. They take up little space and still provide dependable heating, so they are frequently installed in tiny utility rooms or closets. Additionally, because they require less horizontal clearance, vertical boilers can be simpler to install in confined spaces. They are therefore a well-liked option for tiny homes like apartments and townhouses.

Conversely, horizontal boilers usually take up more floor space during installation due to their larger size. Although they might not be as compact as vertical boilers, they are appropriate for larger homes with higher heating requirements because they frequently have larger heating capacities. Because all of the parts are grouped together on one level, making maintenance and repairs easier, horizontal boilers also make servicing procedures simpler.

A house’s current layout and available space are important factors to take into account when choosing between vertical and horizontal boilers. A vertical boiler might be a better choice because of its compact design if you live in a multi-story home or have limited floor space. On the other hand, a horizontal boiler might be more appropriate for your needs if you have more space and need a higher heating capacity.

The choice between vertical and horizontal boilers ultimately boils down to your own needs and preferences. You can select the location that best suits your current circumstances and guarantees the highest level of heating efficiency for your house by carefully weighing your space requirements, heating requirements, and budget.


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Sergey Ivanov

I like to help people create comfort and comfort in their homes. I share my experience and knowledge in articles so that you can make the right choice of a heating and insulation system for your home.

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