The Different Types of Boilers and How They Work

February 15, 2023

Boilers play a major role in the heating, ventilation, and air conditioning (HVAC) systems of homes and commercial buildings. But there are many different types of boilers on the market with varying levels of efficiency and technology. Keep reading to explore the three most common types of boilers.

Combi Boilers

A combi boiler is an all-in-one heating and hot water solution that doesn't require a separate water heater or hot water tank. Combi boilers are very compact, making them ideal for small homes and apartments. When you turn on the tap, the boiler will heat the water to the desired temperature on demand.

How Does a Combi Boiler Work?

A combi boiler works by taking water from the main's supply and heating it instantly to provide heat or hot water on demand. There is no need for a separate water heater or hot water tank, which makes combi boilers very compact and space-saving.

Benefits of Combi Boilers

Combi boilers bring a lot of desirable benefits, most notably their efficiency and convenience. They take up much less space than regular boilers, so they are ideal for homes with limited space. And because the hot water is produced on demand, you’ll never have to worry about running out of hot water – especially great for busy households! Moreover, these boilers are relatively easy to install, which can save both time and money.

Disadvantages of Combi Boilers

Combi boilers, while beneficial in many ways, can be problematic when it comes to certain properties. If the flow rate or incoming water pressure is low, they typically do not work well. Additionally, hot water flow rates are decreased with multiple outlets concerned—primarily an issue in homes with two or more showers. Finally, higher-performance combi boilers (providing 12.5L per minute or more) may not be effective on 15mm pipework supplies and may also become oversized when compared to the actual heating requirements.

System Boilers

System boilers are best suited for larger households with multiple bathrooms as they provide hot water to multiple outlets simultaneously. System boilers require a cylinder in order to store hot water, but unlike regular or conventional boilers, this cylinder does not need to be situated in the loft space. System boilers also come equipped with their own integral pump which means that installation is easier than ever before! However, due to their size, system boilers can take up more room when installed inside properties.

Disadvantages of System Boilers

System boilers may offer an attractive solution to your heating needs, but they come with a few possible disadvantages. The main issue is that hot water needs to be periodically reheated to keep the tank warm and flowing smoothly. Having to pre-program your boiler in order for hot water to be available at a specific time can also prove inconvenient for some users.

In addition, system boilers require more space than other types of units, including a large hot water cylinder, which will increase your installation costs. As the size of the cylinder dictates how much water you're able to use, it’s worth discussing all these elements with an experienced engineer beforehand.

Regular/Conventional Boilers

Regular or conventional boilers are much older units which have been around for decades now. These units are best suited for larger households as well as those that have multiple bathrooms and require more power than what combi or system units can provide. Unlike other types of boiler models mentioned here, regular/conventional systems require two tanks: one tank in the loft space and another alongside the boiler itself in order to store hot water while providing central heating throughout your home or office building.

These are slightly more complicated to install compared to combination or system models. However, they offer greater flexibility when it comes to customizing how your home is heated over time as well as being able to adjust temperatures throughout each room.

Get in Touch With Professionals Today!

Are your outdated heating and cooling systems dragging you down? Or are you seeking a healthier indoor air quality? Look no further! At Bob Boldt HVAC, we offer some of the best heating, cooling, and indoor air quality services in the Eagan area. Whether you’re looking for installations, maintenance or repair work - we have specialized technicians who can help. We also provide money-saving system add-on services. Our friendly customer service team is ready to assist you with all of your needs. Call Bob Boldt HVAC today and schedule a consultation.

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