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Unit heater

It is one of the best and cheapest heating devices needed for places such as sports halls, production halls, factories and material drying, and it is available in three types: hot water, steam (hot oil) and electric. This product can be produced in capacities of 24000 BTU/h, 500000 BTU/h.
As much as the coolness and moderation of the air is necessary in the hot seasons of the year, the presence of suitable heat is also necessary for the cold seasons. It may have happened to you that you went to the gym to exercise in the winter and were bothered by the extreme cold in the environment, or that you could not focus on the topic of discussion in a conference hall due to the cold environment. Conventional heating devices cannot be used to heat these types of large environments. In this case, unit heaters can be a smart choice.
Their overall structure is such that they are suitable for large places. Follow this discussion to the end to learn more about unit heaters. In the following, you will get to know the types of unit heaters and their uses, and we will tell you the points that you should pay attention to when buying.

What is a unit heater?

The word heater means a device capable of producing heat. Unit heaters are basically devices that are responsible for heating different places. A heater unit is a heating system that is placed in the category of advanced devices. The efficiency in this system is so high that it is known as a solution to produce the necessary heat that is both economical and consumes little energy.
The temperature that a unit can withstand is 95 degrees Celsius, and the pressure is 16 bar per unit of load. These characteristics have made it known as a wet heating system.

Applications of unit heaters

Large and medium-sized workshops for heating need a larger heating system than the usual types, so units are the right choice. Any space with a high ceiling can use heaters. Usually, in places where noise is not so important, a unit heater can be a good option to use. The places where unit heaters are mainly used are listed below:
  • Large warehouses
  • Distribution centers
  • Large garages
  • exhibitions
  • Meeting halls
  • ceremonial hall
  • greenhouses
  • gyms

How is the structure of a unit heater?

In order to be able to use unit heaters, a central engine house is needed. The way it works is that the flow of hot water from the engine room enters the coils and the fans located behind the coils create the air flow by rotating. This airflow causes heat transfer and increases the ambient temperature. Since heating large areas is time-consuming, smaller hot water flows cannot be used and they require a large hot water source.
In order to reduce or increase the temperature of the unit heater, you must use thermostats that are installed on the walls. Depending on the motor power of the unit heater, it can throw wind with different ranges.

Unit heater components

A unit heater consists of the following three main parts:
  • Coil
  • Main compartment
  • Vanes or air outlet dampers
The coil is a set of metal tubes that are placed inside the main body of the unit heater. Depending on the shape of the housing, these coils can be made in square, round and corner shapes.
One of the things we need to know about coils is that coils can be of different types depending on whether they use hot steam or hot water. If hot water steam is used, seamless steel pipes are used. While copper pipes can be used for hot water.

Original storage of unit heater

Fans and coil are placed inside the body. On the other hand, dampers are installed on it. Depending on the environment where the heater is used, the material of the body varies. Galvanized steel can be used to make the body. Apart from that, there are other types of fiberglass that are suitable for the body. The thickness of the body should be according to the customer's needs. A single layer of paint is usually placed on the body, which is kiln-fired.

The unit heater fans

The heat that exists in the coils can be used only when there is an air transfer in the environment. This is done by fans. Actually, the act of directing the air from the coil to the environment is done by the fan. The rotation in the fan is created by an electric motor. The fan is located behind the coil. When the rotation occurs in the fan, the warm air moves towards the environment and the cold air takes its place. This process happens in a repetitive cycle until you need it.
The unit heater fans can be blowing or suction. The purpose of the blower is to blow the air from the coil to the bad environment or to suck the air around the coil.

Air-directing dampers

The main task of these blades is to evenly distribute the air in the environment. These dampers are installed in the outlet opening of the unit heater body. You can manually move these vanes according to your needs so that the air flow moves in the direction you want.

What are the types of unit heaters?

Different categories have been made for unit heaters. Based on the place where the heater is used, there are industrial types, special greenhouse unit heaters that have a temperature above 60 degrees.
  The place of installation of unit heaters is another classification factor, according to which we have ground, ceiling and wall types. Based on the thermal energy, water heaters, heaters and electric units can be named. In another category, the fuel used in the unit heater is the determining factor. Depending on whether the unit heater works with fuel or uses the radiation method, there are different functions.

Fuel unit heaters

If you use unit heaters in environments such as garages or large workshops, this category is more suitable for you. In order to maintain health and safety, you must have a proper ventilation system. This system makes the carbon dioxide, which is caused by the burning of fuel, leave the environment well and does not cause people to be gassed. The larger the area where these units are used, the better they will perform.

Radiant types of heaters

In the second category, the heat given to the environment is in the form of radiation. This means that electrical energy is used to heat the coils. This category works well and is more suitable for large and indoor places.
In the unit heaters that are named as ceiling, air and heat are blown from the ceilings and vertically or horizontally to the environment. Wall types can ventilate horizontally and as their name suggests, they are installed on the wall.

What are the advantages of using unit heaters?

Considering that unit heaters are used in places with large spaces, there are reasons that made them suitable and advantageous. In general, the following advantages can be considered for them:
  • The heat generated by the unit heater is pleasant and not annoying.
  • Its operation speed is high in large places and it can easily heat very large places.
  • In order to create a uniform and suitable air flow everywhere in the building, several unit heaters can be used simultaneously in the environment.
  • Due to their good performance, they have affordable prices and with their high efficiency in the long term they can compensate the purchase costs.
  • Because they can be used both on the ceiling and on the wall, so they take up little space.
  • Their use has the lowest possible risk because it does not have such complex components.
  • To replace damaged parts, you don't need to spend high costs to buy a newer type, and engine replacement is easily possible.
  • The possibility of adjusting the fan speed to speed up the heating process

What are the disadvantages that have been considered for the unit heater?

Along with all the features and advantages that unit heaters have, they also have some disadvantages that we have introduced below:
  • If you use unit heaters in large warehouses. Because crew and staff rarely visit these areas, the heating is accompanied by the loud noise of the unit's fans, which can be a bit annoying.
  • For their safe and correct installation, it is necessary that your facilities have the ability to support it so that there are no problems during use.
  • For proper operation of fans, they need to be placed in an environment with correct vertical alignment.
  • It is not suitable to use a heater unit for low heights and it must be installed at a certain height because the air temperature is high.

price of Unit heaters

Based on the capacity of unit heaters, they will have different prices. The stronger the motor in the fan, the higher the work efficiency and the heating speed. In addition, the price of the product will also increase. Depending on the type of fuel intended for the heater, there are different price ranges. In order to be able to estimate the price of the heater well, you must consider each and every component of it, such as the location of the heater, the type of installation, etc., and know that the more complex its structure, the more its price will increase.

Some points are necessary to buy and choose a unit heater

If you are planning to buy units, you should consider some main points before buying. First, where is the place where the unit is to be placed and what are its conditions. Next, you should pay attention to the type of fuel that the heater unit has. As we said, the types of fuel unit heaters should be in well-ventilated places so that the gases caused by the fuel are removed from the environment. What heat capacity do you need for your environment? Does the heater you have chosen have this capacity or not?
How much noise can there be in the environment? Based on the amount of noise, you can have four categories: loud, medium, low and very low noise.
The dimensions of the environment in which the unit is placed and your geographical location are also affected by the unit. Do you want to install it on the wall or the ceiling? Is there water or steam in the coil pipes? Keep all these points in mind before buying and make your purchase with more knowledge. You can purchase both in person and order from sites that operate in this field.
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