Commercial Heating Solutions

Renewing a Plant Room

When renewing or upgrading a plant-room there are many choices when selecting a commercial boiler, purchase price, size, site access, efficiency, emissions, material, water content, water flow rate and delta T, size, life expectancies, maintenance and running costs etc.


Commercial heating systems are not cheap but with good design should last 20-25 years. It is important to understand the costs of not just the install cost but how much the plant costs to operate and maintain. As every site is different the choice of heating equipment will change too, this is to match your expectations for reliability and efficiency.

When surveying a site we look at how the existing plant is operating and the changes to the use or structural changes to the building, has better insulation or improved windows been fitted? Has the building been added to which could increase the system load. In the past most heating and hot water systems have been oversized, many heating systems can operate without any issue when some of the plant has failed. This is the opportunity to reassess the system load and match the new plant to that. This often means a significant saving in the installation costs and with modular boilers there will be a built in resilience and they will offer an improved load matching which will increase the system efficiency.

One cost that must be fractured in is the boiler flue, if the boilers are being upgraded from conventional efficiency to condensing technology will more than likely need an upgrade flue system. These can be a significant cost if the plantroom is a long way from the terminal. If the existing boilers are connected to a flue dilution system then there are solutions to overcoming potential pluming
With much greater awareness of emissions from heating systems it is important to select the correct equipment to make the new installation future proof by meeting likely future regulations on emissions.

It is important to match the heating plant to match the real site system load not just at maximum output but at low load conditions, this stops the boilers cycling which not only affects the system efficiency but effects the boiler reliability as well. A well matched modular boiler system to the system load will keep capital costs down as well as minimise running and maintenance costs
Commercial boilers are designed to work in different way and can be significantly different sizes for the same output. They can be made of different materials that can make them suitable for different applications. We will guide you through this process, ensure that all the equipment selected will meet your requirements


Commercial plantroom come under many regulations that cover the equipment, the installation and the maintenance.

There are many regulations that the manufacturer have to comply with and the finished unit will show compliance with the CE mark. The most significant change in the last few years is the ErP directive which ensures that the boilers and waterheaters meet set efficiencies and emissions. All boilers under 400kW have now to be condensing and have a NOx emission under 56mg/kWh.

For installation we comply to various regulations. The most important are BS6644:2011, EN12828, the Institute of Gas Engineers UP2 and UP10 and the Clean Air Act. These regulations cover the ventilation, flues, gas supply and the required safety equipment. It is important to realise that these may well have changed over the years since your plant was installed, the new plant must now comply with these regulations

The Building Regulations will stipulate requirements for existing and new build projects. This will see the introduction of no gas in new dwellings where we will see heat pumps being introduced. The Building Regulations is the way that the government will bring in new rules and using them to reduce emissions to meet the UK carbon targets.

The London Plan covers the Greater London area and has higher standards for emissions standards to try to improve air quality in busy areas. For boilers is a higher standard for NOx emissions of a maximum level of 40mg/kWh.

When we carry out a survey we cover all these regulations and how they will impact on the project. We can guide you through the process to ensure that there will be smooth change with least effect on the operation of the building

Posted in Heating.