The need for hot water has become an integral part of life and production processes in both residential and industrial facilities today. Ensuring the uninterrupted, hygienic, and efficient supply of hot water is of great importance, especially in hotels, hospitals, factories, and mass housing projects that require intensive use. One of the most critical equipment used to meet this need safely and economically is boiler systems.
Boilers are devices that fall into the class of pressure vessels and ensure that hot water is stored and kept ready for use. They not only produce hot water but also offer significant advantages in terms of energy savings, hygiene, and durability. Therefore, they are widely preferred by both individual users and large-scale businesses.
Today, among the topics users are most curious about regarding boilers;
• “What is a boiler, how does it work?”
• “Is an electric boiler or a coil boiler more advantageous?”
• “How to identify boiler malfunctions and what maintenance steps should be applied?”
• “What is the difference between enamel-coated boilers and epoxy-painted boilers?” are among the questions.
Determining the correct capacity in boiler selection, the quality of the materials used, insulation features, and production standards are of great importance. An incorrectly selected or poorly maintained boiler can increase energy consumption and lead to high maintenance costs in the long run. On the other hand, a well-designed and regularly maintained boiler provides high performance, low energy consumption, and safe use for years.
In this comprehensive article, we will examine in detail the types of boilers (single coil boiler, double coil boiler, electric boiler, enamel-coated boiler, epoxy-painted boiler), their technical features, the materials used in production processes, maintenance tips, and points to consider for long-lasting use. Additionally, by addressing common boiler malfunctions, how to detect these malfunctions, and solutions, we will provide guiding information for both individual users and industrial facilities.
A boiler is a pressure vessel designed to meet the hot water needs in plumbing systems, storing water inside and heating it with various energy sources to make it ready for use. The primary function of boilers is not only to produce hot water instantly but also to store it at a certain capacity and keep it ready for continuous use. This feature makes boilers indispensable for both individual and industrial uses.
The inner surface of boilers is usually protected with enamel coating or epoxy paint. These coatings ensure that the surfaces in contact with water are hygienic and also increase corrosion resistance. Thus, the boiler can provide safe and healthy hot water supply for many years. On the outer surfaces, polyurethane or special sponge insulation materials are used. This insulation ensures that the water remains hot for a long time, minimizing energy losses and offering high energy efficiency to the user.
Boilers are produced with different capacity options. Smaller volume models are preferred for domestic use, while much larger volume boilers are needed for apartment blocks, hotels, hospitals, factories, and industrial facilities. When selecting capacity, daily hot water consumption amount, number of users, system operating pressure, and energy source must be considered.
The most important factors determining the quality of a boiler include;
• Pressure resistance (operating pressure and test pressures),
• Coating material (enamel or epoxy),
• Insulation quality (polyurethane density or sponge thickness),
• Coil structure (single coil, double coil, or resistance),
• Cathodic protection (use of anode rod).
Boilers play an important role not only in hot water production but also in the safe operation of the system. For example, a poorly insulated or low-pressure resistant boiler can lead to energy waste and long-term malfunctions. Conversely, a boiler produced with the right materials and regularly maintained provides high efficiency, low energy cost, and long-lasting use.
In short, boilers are strategic pressure vessels used to meet the hot water needs continuously, safely, hygienically, and economically in all areas from residential to industrial facilities.
Types of Boilers
Single Coil Boiler
• Contains a single coil inside.
• The coil transfers energy from the heat source to the water inside the boiler, providing heating.
• Generally preferred in individual residences and small facilities.
• Available in different capacity options from 100 liters to 6000 liters.
• Offers high efficiency and aesthetic appearance.
Double Coil Boiler
• Contains two coils inside.
• Provides higher efficiency, especially preferred in central systems.
• The double coil structure allows the simultaneous use of different heat sources.
• Capacity ranges from 160 liters to 6000 liters.
• Offers safe use with 10 bar operating pressure.
Electric Boiler
• Does not contain a coil; instead, it works with stainless resistances.
• Provides an advantage by heating water with electrical energy, especially in regions with strong electrical infrastructure.
• Has a fast heating capacity thanks to resistances.
• Offers different options from 100 liters to 6000 liters.
Epoxy Painted Boiler
• The inner surface is coated with epoxy paint.
• Resistant to corrosion and offers hygienic use.
• Suitable for users seeking an economical solution.
Enamel Coated Boiler
• Provides high hygiene with double-layer enamel coating.
• Titanium-added enamel, free of heavy metals, offers long-lasting use.
• Resistant to corrosion and shows resistance to high pressure.
Production Quality in MIT Boilers
Developed under the roof of Ekin Industrial, MIT boilers are superior engineering products that provide long-lasting use, high hygiene standards, and energy efficiency, beyond being just a hot water storage device. Every step, from the materials used in the production process to quality control stages, is planned and meticulously implemented above industry standards.
Quality of Materials Used
• Ereğli TRKK 6222 low carbon steel is preferred in MIT boilers. This type of steel contributes to the long-lasting nature of boiler bodies thanks to its ease of shaping and durability. The low carbon content increases the material's resistance to corrosion.
Enamel Coating Technology
• The double-layer titanium-added enamel coating applied on the inner surfaces makes it possible for the boiler to be hygienic and provides full protection against corrosion on surfaces in contact with water.
• The enamel thickness is between 200u – 250u, which is above international standards. Thus, high resistance is achieved against both mechanical impacts and chemical effects.
• The double bathing surface cleaning applied before enamel coating ensures maximum adhesion of the coating to the surface, increasing the durability of the coating.
Mechanical Durability Tests
• SRM pipes used in MIT boilers are tested under maximum pressure before being released to the market. These tests guarantee the device's safe operation under high pressure for many years.
• Each product is subjected to special control procedures after production to measure its resistance to both pressure and temperature.
Insulation Quality
• The polyurethane insulation used on the outer surface of MIT boilers is produced at a density of 42 – 44 kg. This insulation value ensures that the water remains hot for longer and minimizes energy losses.
• Thanks to quality insulation, users can access hot water for longer with less energy, providing both energy efficiency and economic savings.
Paint and Surface Protection
• The outer surfaces of the boilers are coated with electrostatic powder paint with a thickness of 50u – 80u. This paint provides not only an aesthetic appearance but also long-lasting corrosion resistance.
• The iron phosphate surface cleaning performed before the paint application delays the possibility of rusting and ensures better adhesion of the paint to the surface.
Advantages Provided by MIT Boilers
Thanks to these advanced production techniques, MIT boilers:
• Offer hygienic use: Thanks to enamel coating and anode rod, water is always stored healthily.
• Are long-lasting: Thanks to double-layer enamel, quality steel, and strong insulation, boilers can be used safely for years.
• Provide energy efficiency: Quality insulation and correct coating technology minimize energy losses.
• Offer maximum durability: The body and pipes, tested under high pressure, perform flawlessly even in intensive use.
MIT boilers stand out not only in the pressure vessel category but also in terms of high-quality standards, engineering solutions, and long-term performance. Thanks to these features, they are safely preferred in both domestic and industrial uses, providing users with uninterrupted, safe, and hygienic hot water for years.
Durability and Longevity in Boilers
The long-lasting and safe operation of boilers depends not only on the quality materials used in production but also on correct protection methods and regular maintenance. Durability and efficiency are ensured through the effective use of complementary elements such as the body structure, anode rod, insulation, and cathodic protection.
The anode rod protects the inner surface of the boiler by preventing corrosion, while quality insulation reduces energy losses and ensures that hot water is preserved for longer. Cathodic protection provides additional safety in boilers operating under high pressure. Regular control and renewal of these elements when necessary guarantee that the boiler operates efficiently, safely, and hygienically for years.
Anode Rod
One of the most important components providing protection against corrosion in boilers is the anode rod. Usually made from magnesium or aluminum alloys, the anode rod attracts ions that can cause corrosion in the water, protecting the inner surface of the boiler. Thus, the anode rod wears out instead of the metal surface of the boiler.
• The anode rod works on the “sacrificial metal” principle and extends the life of the boiler's inner surface.
• It should be regularly checked and replaced when its life is completed.
• The replacement period depends on usage intensity, water hardness, and boiler capacity.
• Neglecting the anode rod can lead to early corrosion and perforation in the boiler.
In short, the anode rod is an indispensable part of ensuring the long-lasting and safe operation of boilers.
Insulation
Insulation materials used in boilers are critically important in terms of durability and energy efficiency. Polyurethane or special sponge insulation is generally preferred.
• Polyurethane insulation minimizes heat losses thanks to its high density and ensures that the water remains hot for a long time.
• The higher the insulation quality, the greater the energy efficiency of the boiler.
• Proper insulation not only provides energy savings but also reduces moisture formation and corrosion risk on the outer surface of the boiler.
• Especially in large-volume boilers, the thickness and density of the insulation directly affect the device's performance.
A boiler with good insulation reduces energy costs in businesses and contributes to environmental sustainability.
Cathodic Protection
Another method providing long life and safety in boilers is the cathodic protection system. Cathodic protection aims to protect the metal surfaces inside the boiler from electrochemical corrosion.
• Anodes used in the system prevent the metal surface from being affected by corrosion.
• Cathodic protection increases safety, especially in boilers operating under high pressure.
• This method extends the life of the boiler and provides a safer hot water system for users.
• The effectiveness of cathodic protection should be checked with regular tests and measurements.
When applied together with the anode rod and insulation, cathodic protection guarantees that boilers operate smoothly and efficiently for years.
Boiler Malfunctions and Solution Suggestions
One of the topics users are most curious about is “How to identify boiler malfunctions?” Although boilers are designed as long-lasting and durable equipment, factors such as intensive use, incorrect pressure settings, lack of maintenance, or the chemical structure of the water can lead to performance drops or malfunctions over time. Early detection of these malfunctions extends the device's life and prevents high-cost repairs.
Common Symptoms of Boiler Malfunctions
1. Insufficient heating of hot water
o Insufficiency in the main function of the boiler, which is hot water production, is usually caused by the wear of resistances, coils, or enamel coating. Additionally, lime and sediment accumulation also reduce heat transfer, preventing the water from heating to the desired level.
2. Fluctuations in water temperature
o Sudden hot-cold fluctuations experienced by users during showering or at the tap are related to pressure imbalance inside the boiler, insulation losses, or thermostat malfunctions. This situation reduces comfort and increases energy consumption.
3. Pressure loss or leakage
o Small leaks seen in the body of the boiler, connection points, or coils can turn into major pressure losses over time. Such problems usually arise due to gasket wear, deformation at weld points, or corrosion. If neglected, they can pose serious safety risks.
4. Abnormal increase in energy consumption
o If the boiler has started to consume more energy to produce the same amount of hot water, this situation may be due to insulation weakening, resistance failure, or lime covering the plates. This problem not only increases costs but also creates a negative environmental impact.
5. Blockage in resistances or coils
o Lime and sediments in the water accumulate especially in the internal components of the boiler in regions where hard water is used. This accumulation hinders heat transfer, reducing efficiency and causing excessive pressure increases inside the boiler.
Solution Suggestions
• Have regular maintenance: Checking the boilers at least twice a year ensures that malfunctions are detected at an early stage. Especially the control of the anode rod is of critical importance in preventing corrosion.
• Apply lime cleaning and chemical maintenance: Lime accumulation is one of the most common problems in boilers. Periodically performed chemical cleaning increases heat transfer efficiency and reduces energy consumption.
• Check pressure and temperature settings: Incorrect pressure settings lead to both energy waste and shortening of the boiler's life. Adjustments should be made in harmony with pump on-off pressures.
• Get professional service support: Pressure losses, body cracks, or problems related to electrical components require professional intervention. Maintenance and repairs performed by expert teams guarantee the safe operation of the boiler.
• Do not neglect spare part replacement: Parts such as gaskets, resistances, and thermostats need to be replaced over time. The use of original spare parts extends the device's life.
Boiler malfunctions usually manifest themselves with performance drops, insufficient hot water, pressure losses, increased energy consumption, and leaks. If these symptoms are not taken into account, the device's life shortens and the safety risk increases. However, with regular maintenance, correct use, and expert support, most of these malfunctions can be prevented. Thus, boilers continue to meet hot water needs efficiently and safely for many years.
Energy Efficiency and Sustainability
Today, the continuous increase in energy costs and the growing importance of environmental concerns have made energy efficiency a fundamental criterion in the selection of all equipment used in plumbing systems. This situation is important not only economically but also in terms of environmental sustainability.
Boilers play a critical role at this point. Boilers selected with the correct capacity, produced with quality materials, and regularly maintained not only produce hot water but also provide more efficiency with less energy, reducing the costs of businesses and individual users. Thanks to high-density insulation, heat losses are minimized, and enamel or epoxy coating prevents sediment and corrosion formation on the inner surface, ensuring the device operates both hygienically and efficiently.
Energy-efficient boilers also offer environmentally friendly solutions. Lower energy consumption reduces the use of fossil fuels and contributes to the reduction of greenhouse gas emissions. Especially when used together with waste heat recovery in industrial facilities, boilers not only meet hot water needs but also become an effective part of energy recovery systems.
The correct design of boilers, selection with appropriate capacity, and periodic maintenance provide both economic benefits and support environmental sustainability goals. Therefore, boilers should be seen not only as a hot water storage device today but also as a strategic investment for energy savings and environmental protection.
The Role of Insulation Quality
Insulation materials used in boilers are one of the fundamental elements of energy efficiency. Thanks to polyurethane or special sponge insulation:
• Heat losses are minimized.
• Hot water is stored in the tank for a longer time.
• Since the device does not need to operate frequently, energy consumption decreases.
This situation not only reduces electricity or fuel costs but also extends the device's life by ensuring it operates less.
Contribution of Coating Material
The enamel coating or epoxy paint used on the inner surface of the boiler plays a critical role not only in terms of hygiene but also in terms of energy efficiency. Because these coatings:
• Prevent corrosion on the inner surface, reducing sediment formation that hinders heat transfer.
• Provide hygienic use, allowing hot water to be stored safely for longer.
• Reduce maintenance needs, lowering operating costs in the long run.
Waste Energy Recovery
Boilers provide significant advantages, especially when used with waste energy recovery systems in industrial facilities. For example:
• Waste heat released during production processes can be transferred to boilers.
• Thus, hot water can be produced without additional energy expenditure.
• This method provides significant savings in energy costs and reduces the carbon footprint.
The Importance of Boilers in Terms of Sustainability
Modern boilers are critically important not only for providing energy savings but also for environmental sustainability. Because:
• Lower energy consumption reduces the use of fossil fuels and greenhouse gas emissions.
• Long-lasting use reduces the need for continuous new device production, contributing to the conservation of natural resources.
• Energy-efficient systems help businesses achieve their sustainability goals by working in compliance with international environmental standards.
Long-Term Economic and Environmental Benefits
Selecting a boiler with high energy efficiency amortizes the initial investment cost in a short time. Thanks to lower energy consumption:
• Operating costs decrease.
• The device's maintenance needs decrease.
• System safety and performance increase.
At the same time, it provides environmental benefits, contributing to meeting international energy efficiency standards such as “green building” certifications.
When selected correctly and maintained periodically, boilers not only meet hot water needs but also provide significant advantages to businesses in terms of energy savings and environmental sustainability. Insulation quality, type of coating, and waste energy recovery methods are the main factors determining the efficiency of boilers. Thanks to these features, boilers have become indispensable equipment in modern facilities, providing both economic benefits and environmental contributions.
Conclusion
Boilers are one of the most reliable, hygienic, and efficient ways to meet the hot water needs in plumbing systems. Unlike plate and tubular heat exchangers, they not only heat the water but also store it at a certain capacity, keeping it ready for continuous use. With these features, boilers provide uninterrupted hot water supply in both domestic systems and large-scale industrial facilities.
There are various boiler models on the market for different usage needs:
• Single coil boilers are generally preferred in smaller volume systems and heat water with energy received from a single heat source.
• Double coil boilers offer highly efficient solutions thanks to their ability to work integrated with multiple energy sources. They are ideal choices in central systems and structures requiring intensive use.
• Electric boilers provide energy independence with the use of resistance and offer practical solutions, especially in areas without coil connections.
The most important criteria to consider when selecting a boiler are; usage area, capacity need, energy source, insulation quality, coating material, and pressure resistance. An incorrectly selected or low-quality boiler can lead to malfunctions in a short time, increase energy consumption, and confront the user with high costs. In contrast, a boiler produced with high-quality standards offers long-lasting use, low energy cost, and high performance advantages.
MIT boilers, which we produce under the MIT brand, stand out in the industry with superior features such as double-layer enamel coating, polyurethane insulation, durable anode rod, cathodic protection, and high-pressure tests. These production standards ensure that the boiler is not only long-lasting but also a reliable solution in terms of energy efficiency and hygienic use.
Today, businesses and individual users place importance on environmental sustainability goals in addition to reducing energy costs. Boilers contribute to these goals thanks to waste energy recovery and high insulation quality. With regular maintenance and correct use, boilers continue to provide uninterrupted service for years.
If you want to select the most suitable boiler model for your plumbing system, receive a professional evaluation according to your capacity needs, and benefit from long-lasting solutions, Ekin Industrial's expert team is ready to support you at every stage. You can contact us for detailed technical consultancy, price offers, and product information tailored to your needs, and confidently make the right boiler selection to enhance your system's performance.
In Summary
Boilers, as pressure vessels that safely, hygienically, and efficiently meet the hot water needs, are indispensable in both domestic and industrial applications. Single coil, double coil, electric, enamel-coated, or epoxy-painted boiler options offer solutions according to different usage areas and needs.
MIT boilers, equipped with features such as durable materials, quality insulation, anode rod, and cathodic protection, provide long-lasting use and high energy efficiency. Together with regular maintenance and correct capacity selection, boilers offer great advantages in terms of both economic benefit and environmental sustainability.
By contacting Ekin Industrial's expert team, you can select the most suitable boiler model for your system, benefit from technical consultancy and price offers, and have a long-term, safe, and efficient hot water solution.