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Apartment Mini Chiller, Industrial Mini Chiller

A Mini chiller is a small, quiet AC unit under 20 tons, ideal for independently cooling houses and  apartments. This article details mini chiller specs, top brands, and buying prices for wholesale purchase.

Guide to Selecting the Best Mini Chiller

Mini chillers have refrigeration cycles based on capacity, consisting of one or more scroll compressors with one or more circuits. Usually installed on the terrace or roof of a building. The process starts with the device cooling down the water in the evaporator and then transferring it inside the building, which then flows through fan coils, providing the desired cooling for each room.

Types of Mini Chillers

 Mini chillers are usually produced and supplied in residential and industrial types:

Residential Mini Chiller

Due to their limited capacity, residential or home mini chillers are usually produced and supplied from 3 to 15 tons of refrigeration. In addition to cooling residential houses, villas, and apartments, residential mini chillers are also used for cooling units such as stores, shops, and offices. The compressor used in home mini chillers is scroll type.

Industrial Mini Chillers

As the name of this mini chiller refers, this type of mini chiller is used in the industry to absorb heat from industrial machines and prevent their temperature from increasing in the product's production process. The only major difference between residential and industrial mini chillers is their type of compressor. Usually, the compressor used in industrial mini chillers is a piston type with more diverse working conditions and the ability to repair them (unlike scroll compressors, which cannot be repaired).

Benefits of Mini Chillers

Here are some benefits of using a mini chiller:

  • Two-season compatibility, which provides both heating and cooling in different seasons.
  • Independent air conditioning system, as each unit operates independently, reducing overall costs.
  • Depreciation, vibration, noise reduction, and a longer lifespan.
  • Ability to be placed in open spaces, such as the roofs or terraces, saving valuable space inside.
  • Minimum installation space: due to their compact dimensions and low weight, mini chillers only require a small installation area.
  • Device reliability as a dependable cooling solution with low tonnage and optimal power consumption.
  • Simple upkeep and affordable maintenance expenses
  • Compatibility with dry and tropical climates
  • The absence of a cooling tower in the compact chiller system
  • Prevention of noise transfer between rooms via the cooling channel

Damatajhiz bicold mini chiller

Application of Mini Chiller in Residential and Office Buildings

The most common use of mini chillers is the cooling of residential houses, apartments, offices, and stores with very comfortable air. The working method is that water as a heat transfer fluid is pumped to the fan coils installed in the building after cooling down in the mini chiller through the piping system. By entering the cold water into the fan coils, blowing air on the other side, and passing the room air through the fan coil, its temperature is reduced, bringing very cool and pleasant air to the residents.

Application of Mini Chiller in Industrial Buildings

The use of mini chillers is not limited only to the air conditioning of buildings; the other use of this device is in the industry.
In most industrial factories, such as the food industry, plastic industry, steel industry, pharmaceutical and chemical industry, health industry, glass making, etc., in which the process of product production is associated with the production of a lot of heat, mini chillers are used to absorb heat and Directing it to the outside environment is very useful. Increasing the temperature of the industrial environment and increasing the temperature of the interior factories causes serious damage and financial losses to industrial equipment and parts.

Mini Chiller & Ducted Split AC Unit Comparison

The difference between a ducted split AC and a mini chiller system is not much, regarding operating costs, primarily electricity consumption, periodic maintenance expenses, and refrigerant gas charging period.

Due to the rapid requests from the builders of residential units about the cost of preparation, implementation, and operation of a ducted split AC and a mini chiller for each residential unit. DamaTajhiz HVAC Group calculation and estimation refers that the costs depend on several factors such as the chosen brand, the size of the unit's infrastructure, the location and how it is implemented, etc.

Moreover, the overall cost of purchasing, installing, and operating a mini chiller is approximately 40% higher than a ducted split AC unit for a similar residential unit using a similar brand and under normal circumstances.

DamaTajhiz HVAC Group offers a wide range of mini chillers with comprehensive technical information and competitive pricing. We also strive to give our valued customers the ease of genuine guarantees and fast delivery, whether a single product for personal uses or bulk purchases for companies and construction projects.

DamaTajhiz HVAC Group proudly serves customers throughout the country, especially neighboring nations in the Middle East region. So feel free to explore our extensive collection and make your selection, knowing that the reliable expertise of DamaTajhiz HVAC Group will support you.

Note: Installing a mini chiller in older buildings with a malfunctioning or inefficient central chiller eliminates the need for other costly air conditioning equipment. A mini chiller installation can provide the desired cooling efficiency since the building's fan coils and piping network already exist.

 DamaTajhiz HVAC Group: The best prices and brands of construction equipment 

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Important Points in Calculating the Capacity of a Mini Chiller

In general, the facility experts calculate the chiller or mini-chiller capacity required for each project, which is based on the exact calculation of the total refrigeration load capacity, in addition to calculating parameters such as geographical conditions (Ambient Temperature) and summer design temperature, altitude above sea level. Relative humidity of the air, the type of building used (temperature inside the design), the type of materials used and the implementation of the building facade, the direction of the building about the angle of the sun, the number of floors, and the surface of the building, the number of people and small and large electrical equipment inside The building and... pay attention to the volume of cold water required and sufficient reliability coefficients in chiller performance.

But suppose you want to use the possibility of fingertip calculation (phase 1) of the chiller required for residential and office buildings in weather conditions such as Tehran, Mashhad, Karaj, Isfahan, Semnan, Shiraz, Erbil, Kabul, Mosul, Kirkuk, Sulaimaniyah, Aleppo, Mazar-e-Sharif, Kabul, Damascus, etc. In that case, you can consider the nominal capacity of 4 tons of refrigeration for every 100 square meters of the building.

Naturally, to calculate the cooling load in geographical areas with hot and dry climates, such as the cities of Yazd, Kerman, Zahedan, Zabul, Baghdad, Madinah, Karbala, Najaf, etc., more cooling capacity than moderate conditions should be considered in calculations.

Using a mini chiller with a fan coil, in addition to the many advantages below, makes it possible to change the season in autumn or spring when some residents may want to use the heating system and others want to use the cold system. The apartment units should be able to choose and apply their taste in providing the desired air temperature.
Also, by installing a mini chiller in old buildings where the central chiller is out of order or does not have optimal efficiency, there is no need to install and use other expensive air conditioning equipment because the fan coils and piping network already exist inside the building, by installing a mini chiller, you can get the desired cooling.

Mini Chiller Performance

Mini chillers are air-conditioned chillers with smaller dimensions and capacity, and their performance is as follows:

The compressor of mini air chillers compresses the refrigerant gas. Condensed gas with high pressure and temperature enters the condenser, is cooled by water or ambient air, and turns into a liquid; this refrigerant liquid passes through the expansion valve or capillary tube, whose job is to break the liquid pressure. It is placed at a low temperature to absorb the heat of the water inside the evaporator after entering the coil.

Due to the evaporator's lower pressure than the condenser, the refrigerant liquid evaporates, and the heat needed for this evaporation process is supplied from the water flowing in the air conditioning system inside the evaporator. As a result, the water of the refrigeration system inside the evaporator is cooled and then by the circulator pump system. The cold water coil of the fan coil and the air conditioner are transferred to create cool air in the desired location. After this process, again with the compressor's suction, the gas caused by evaporation moves towards the compressor, and this cycle continues.

Mini Chiller Components & Their Functions

Mini chillers are compact air-cooled chillers with smaller dimensions and capacities. Their performance can be summarized as follows:

Mini chillers use a compressor to compress refrigerant gas. The high-pressure, high-temperature condensed gas enters the condenser, is cooled by water or ambient air, and turns into a liquid. This refrigerant liquid then passes through an expansion valve or capillary tube, by passing through the expansion valve or the capillary tube, which breaks the pressure of the liquid; this refrigerant liquid is placed at a low temperature so that it can absorb the heat of the water inside the evaporator after entering the evaporator coil.

Function and components of mini chiller
Due to the lower pressure in the evaporator compared to the condenser, the refrigerant liquid evaporates, drawing the necessary heat from the water flowing within the air conditioning system inside the evaporator. As a result, the water in the refrigeration system inside the evaporator cools down.

Tube shell evaporator
Then, the circulator pump transfers this cooled water to the cold water coil of the fan coil and air handling unit to create cool air in the desired location. After this process, again with the compressor's suction, the gas caused by evaporation moves towards the compressor, and this cycle continues.

operator
Water in the refrigeration circuit of the building is cooled by the evaporator or heat exchanger of mini chillers, which come in two types of shells - tubular and plate. In the evaporator, refrigerant gas and refrigeration water pipes work together to cool the water in the system. The refrigerant liquid evaporates and absorbs heat from the gas, which cools the water. Numerous thin metal plates promote efficient heat exchange between the hot and cold fluids when using a plate heat exchanger. The fundamental principle of this type of heat exchanger involves hot and cold fluids entering from opposite directions. These fluids flow in alternating layers between metal plates, allowing for efficient heat exchange.

Scroll compressor
Mini chillers have scroll-type compressors, making them suitable for low-capacity residential units. They are powered by single-phase or three-phase municipal electricity. The mini chiller's air condenser features multiple copper coils with aluminum fins, typically cooled by large axial fans.

Mini chiller


Some mini chillers are also used as heating equipment (with a heat pump) and can provide the hot water needed for the fan coils in winter.

Mini Chiller Installation Location

The place of installation of mini chiller in residential buildings and apartments is usually on the terrace or balcony of the building so that the length of piping (the cost of purchasing and running it) is as low as possible. However, due to the small space of most apartments with a small terrace and balcony, the balcony space is often unsuitable for installing a mini chiller, in which case the device is installed on the roof. On the other hand, because mini chillers are air-cooled, it is recommended to install these devices on the roof because usually there is not enough space in the terrace and balcony for the airflow and circulation of the condenser cooling system of mini chillers.

Factors to Consider When Buying a Mini Chiller

The first step when wholesale buying a mini chiller is to consider the dimensions of the space where the device will be utilized. Mini chillers come in various types and capacities, so it is essential to evaluate the size and requirements of your environment to select the appropriate model. Factors such as energy consumption, features, brand, and price should also be considered.

The DamaTajhiz HVAC online store provides technical information on numerous mini chiller models from reputable brands with original warranties, ensuring a satisfactory and smart shopping experience.

Mini Chiller Pricings

The cost of a mini chiller varies based on capacity and brand. Then again, the first thing you should do is to determine the brand and required capacity. All mini chillers featured on the DamaTajhiz HVAC website include product identifiers, good pricing, and discounts, which are already included.

Also note that in the specialized HVAC group of Damatajhiz, all the mini chillers are only sold in bulk. Therefore, if you want to wholesale any of these products, contact us.

Which Mini Chiller Brand is Better?


According to the frequent questions that many respected users and employers ask the heating experts when consulting and choosing the mini chiller they need, we would like to inform you that the choice of brand is usually based on the technical specifications, quality, history, and price of the product. Most employers welcome Media, J Plus, Dematehiz, Ax, and Green mini chillers.

Dear users:

Reading the stated information above to obtain additional information to purchase the types of mini chillers. You can also contact the experts of the AC equipment by dialing one of the extension numbers 117-119-120-126-317 to get advice or just to ask your questions.

Dear users, while thanking you for the trust you put in the technical opinions of air conditioning sales experts of DamaTajhiz, it should be noted that the choice of the desired product brand based on history, brand strength, service, and product price is ultimately determined by the buyer. But in mini chillers, most users and buyers choose and buy best-selling brands such as Midea, DamaTajhiz, and AUX due to their quality, price, and after-sales service.

Also, considering that the Damatajhiz HVAC Complex is a member of the main group specializing in heating equipment, is the first and the most viewed authority for selling air conditioning equipment, and is an official member of the heating and air conditioning equipment sellers' union. Therefore, it is now safe to say that we provide all kinds of mini chillers in the Middle East region. Therefore, if you are from the same country in the region and you need a cooling tower, please place your order with our sales experts team. Product warranty and a reasonable price are included.

"Buy with confidence and peace of mind."

Business License
Trademark registration certificate - Stewardship business license from Virtual Business Association - Business license from Heating and Air Conditioning Equipment Association

Exhibition of facilities
The presence of Damatajhiz in international exhibitions of construction facilities and cooling and heating systems from 2014 to 2016

Order from you, follow up from us.
In addition to a valid business license from the heating and air conditioning trade association, Damatajhispecialized collection has an electronic trust symbol and started its store site in 2013 in the head office of Tehran.

1M³ = 35.315 Ft.³
1K.Cal. = 4 B.T.U.
1 Atm. = 14.7 P.S.I.
1 G.P.M. X
0.2271 = 1M³/hr
12000 B.T.U. = 1Ton of Ref.
1M³/hr = 0.588 C.F.M

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DamaTajhiz Integrated Mini Air Chiller 8 Ton

DamaTajhiz Integrated Mini Air Chiller 8 Ton

  • Capacity: 5Tons of Refrigeration
  • Compressor type: scroll (Danfoss or Copeland)
  • Refrigerant gas: R407 or R22
  • Equipped with tubular shell evaporator
  • It has an expansion valve, thermostat, solenoid valve, and safety
  • Made of a galvanized sheet of suitable thickness with the ability of disassembly and reassembly
  • Out-of-Stock
DamaTajhiz Integrated Mini Air Chiller 8 Ton

DamaTajhiz Integrated Mini Air Chiller 8 Ton

  • Capacity: 5Tons of Refrigeration
  • Compressor type: scroll (Danfoss or Copeland)
  • Refrigerant gas: R407 or R22
  • Equipped with tubular shell evaporator
  • It has an expansion valve, thermostat, solenoid valve, and safety
  • Made of a galvanized sheet of suitable thickness with the ability of disassembly and reassembly
  • Out-of-Stock
مینی چیلر هوایی یکپارچه دماتجهیز 6 تن تبرید

DamaTajhiz Integrated Mini Air Chiller 6 Ton

  • Capacity: 6Tons of Refrigeration
  • Dimensions: 110*110*130 cm
  • Compressor Type: scroll (Danfoss, Copeland)
  • Refrigerant Gas: R22 or R407
  • Equipped with tubular shell evaporator
  • It has an expansion valve, thermostat, solenoid valve, and safety
  • Made of a galvanized sheet of suitable thickness with the ability of disassembly and reassembly
  • Out-of-Stock
مینی چیلر هوایی یکپارچه دماتجهیز 6 تن تبرید

DamaTajhiz Integrated Mini Air Chiller 6 Ton

  • Capacity: 6Tons of Refrigeration
  • Dimensions: 110*110*130 cm
  • Compressor Type: scroll (Danfoss, Copeland)
  • Refrigerant Gas: R22 or R407
  • Equipped with tubular shell evaporator
  • It has an expansion valve, thermostat, solenoid valve, and safety
  • Made of a galvanized sheet of suitable thickness with the ability of disassembly and reassembly
  • Out-of-Stock

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