How to Choose the Correct Commercial Boiler Size?

Commercial boilers are useful for room lighting and space heating. They are a type of system that you should handle carefully during repair or maintenance. This is due to the high temperatures and pressure levels they operate at. Commercial boilers provide heating for facilities and buildings used for business purposes. Boilers are electrical or oil-powered systems used to generate hot water or steam needed for industrial purposes. Here at MCR Gas, we understand that sizing your commercial boiler can become a stressful experience. We’ve compiled all the information you need in one place to make the process easier.

What Size Commercial Boiler do I Need?

Generally, the output you require will determine the size of the commercial boiler you need. This is usually measured in kilowatts. Larger commercial boiler systems will emit more kilowatts and, as a result, supply more hot water.

Most boiler manufacturers do not issue public information relevant to their sizing. However, there are guidelines available known as “H-22”. This refers to the heat loss calculation. This will usually need to be completed using a specific software programme or calculator to get an accurate reading. This is why we recommend contacting a Gas Safe engineer to help you through the boiler sizing process. Here at MCR Gas, our engineers are highly trained and experienced in all aspects of commercial boilers. From sizing them to installing to maintenance, our engineers can be trusted to provide you with a quality service.

Important Things to Consider

Boiler Location

Before purchasing and installing your commercial boiler, you need to decide where in your property this system would be located. Will there be enough space for the size of the system you need? Will your new system be able to operate efficiently in this location?

Boiler Requirements

The size of the boilers varies between 24 kilowatts and 42 kilowatts. However, these days there are combi boilers which are also effective but not suitable for a large establishment. They provide hot water for a house which has a maximum of 20 radiators. It is essential to consider the amount of heat and hot water your establishment required to ensure you are installing an adequate system.

Ensuring Sufficient Ventilation

Wherever you decide to locate your new boiler, you must ensure there is sufficient ventilation. The International Fuel Gas Code stipulates that there should be at least two openings in a boiler room, and they should preferably be at opposite ends. Placing your boiler in a well-ventilated space will improve air circulation, therefore preventing the production of harmful carbon monoxide. Carbon monoxide is poisonous and will reduce the efficiency of your boiler. This could lead to incomplete fuel combustion.

Boiler Fuel

Boilers produce steam and heat from the fuel. There is a range of different fuels available such as oil, coal, gas, and hot water. Many commercial boilers run on gas or oil. Gas is a common choice, but oil boilers can last longer, reaching up to 25 years. Whatever fuel you opt for, your boiler must be readily accessible.

Types of Industrial and Commercial Boilers

There are different types of industrial and commercial boilers. Some may be better suited to certain facilities than others. In general, boilers are installed in large residential buildings, hotels, lodging facilities, hospitals, pharmaceutical companies, universities, educational institutions, and several other similar premises. It is crucial to ensure you have the correct type and size of boiler system installed for your needs to keep commercial energy bills to a minimum. Here at MCR Gas, our engineers are highly trained and experienced in all aspects of commercial boiler installations and have generated a wealth of commercial accreditations.

Electric Boilers

These boilers use only electricity for heating water. They are easy to install and operate quietly. Since they do not require fuel and there are no combustion considerations, they provide a perfect solution in areas where strict emission regulations are in force, or the use of gas is prohibited.

Water-tube Boilers

A water-tube boiler generates steam from water circulation inside tubes heated externally by passing through a fuel-powered furnace. Water-tube boilers are used extensively for industrial and commercial applications. Installing a super-heater mounted integrally can generate extra heat, making these boilers suitable for use in a wide range of applications where large amounts of steam are required to produce higher pressures.

Fire-tube Boilers

A fire-tube boiler is one of the most basic kinds of commercial boiler systems. Hot gasses are generated from a furnace powered by fuel-burning inside the furnace. This is then channeled into fire tubes. These tubes run through the main vessel of the boiler containing water. The gasses then transfer the heat through the walls of the pipes to the surrounding water by thermal conduction to generate steam. Fire-tube boilers are compact in construction because water and steam are kept in the vessel, but that implies a very high output steam pressure cannot be obtained with these boilers.

Condensing Boilers

Condensing boilers are water heaters fuelled by gas or oil. They condense water vapour in the exhaust gases, utilising the latent heat of vaporisation for heating water returning from the central heating system. They can work at and retain a high level of efficiency meaning they require less heat from the burner. This not only makes them more eco-friendly but you can also expect to pay lower energy bills.

Sizing a Commercial Boiler

When it comes to selecting the proper size commercial or industrial boiler for your specific requirements, it can be a daunting task. A detailed evaluation of your steam pressure and volume needs will be required. You must also consider your seasonal load requirements as some applications require large amounts of hot water or steam only at specific times of the year.

Commercial properties must have an appropriately sized boiler. Your boiler may not generate an adequate amount of heat to meet your requirements if it is too small. A boiler that is too large may overcompensate for your needs and leave you with a hefty energy bill. The role of an efficient boiler is to provide hot water for any facility that it has been acquired for.

For help with sizing and installing your commercial boiler, contact MCR Gas today. Our engineers are available in the Bury, Bolton, Salford, and wider Greater Manchester areas. We pride ourselves on our excellent customer service and have generated a wealth of outstanding reviews.

How to Choose the Correct Commercial Boiler Size?

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