Did you know that more people than ever are choosing a system boiler with unvented cylinder over a standard combi boiler?
Combi boilers are still the most popular boiler on the market. However, more and more homeowners are waking up to the fact that they can take advantage of amazing flow rates and instant hot water with a system boiler combined with an unvented cylinder.
But why? Well, as an experienced engineer, I know that nowadays, people aren’t prepared to wait. They want better flow rates, and hot water that suits their higher hot water demands.
Let me tell you some of the biggest reasons why people are now fitting system boilers with unvented cylinders. So, you can decide if it sounds like a good idea!
1. They want to fill a deep bath quickly
If your boiler is currently taking an age to fill a bath, or you have to wait a while for the hot water to heat up again, there is another way. Fitting a system boiler with unvented cylinder can give you an unbeatable flow rate that fills a deep bath in no time. So, you’ll no longer have to wait!
2. They need to run 2 high-pressure showers at once
If you have a large family, and people are always in and out of the shower, a system boiler with unvented cylinder might be ideal. After all, no-one likes having to wait for a shower, whether you’re just out of the gym, or need to rinse the dye out of your hair!
3. They want to fit an ensuite/extra bathroom
Looking to fit a new ensuite or extra bathroom in your home, but know your current boiler won’t be able to take the strain? In that case, it might be time to consider fitting a system boiler with unvented cylinder. You’ll have access to almost unlimited hot water, and won’t have to worry about your boiler crippling under the effort!
4. Great hot water capacity without compromising on space
The other good thing about a system boiler with unvented cylinder is that it doesn’t take up as much space as a regular boiler. So, no cold and hot water tank. You can even get horizontal or bespoke custom-made unvented cylinders to fit into the exact space you need!
5. They want hot water AND a warm home
At the same time, I mean. With a combi boiler, it usually has to prioritise hot water over heating whilst you’re running a bath or shower. Whereas with a system boiler and unvented cylinder, you can have all the hot water you need, whilst your home stays lovely and warm.
TIP: Remember, with unvented cylinders you must have a 22mm main supply coming into the house. If you have an old half-inch lead main, it’s not going to give enough pressure to the cylinder to fill it.
Advice from an experienced heating engineer
What you choose for your home comes down to your individual needs. Always. For instance, if you have a two-bedroom house with one shower, and you’re always using the shower rather than a bath, I’d opt for a combi boiler. However, if you have two bathrooms and an ensuite, with a family who are always using the hot water, you’d be better with a system boiler and unvented cylinder.
It all comes down to what you use, the pressure you like in your shower, how fast you like the bath to fill. If these are the things you notice, and you want practically unlimited hot water, an unvented cylinder could be worth researching further.
I personally have a combi boiler in my house. It’s a Worcester Bosch Greenstar highflow that delivers 20 litres per minute. However, I’m currently building an extension and planning to fit a system boiler with unvented cylinder. The reason for this is that I’m going to end up with a bathroom and two ensuites.
Realistically, with an unvented cylinder, you could run a bath and two showers at the same time. Think of that! And with a standard cylinder that 500mm wide x 1500mm high, it’s really not that much extra space!
Conclusion
Well, there we have it! The main reasons why homeowners are now opting for a system boiler with unvented cylinder. Do any of the above sound like you? In that case, it’s a good idea to speak to your chosen engineer and seeing what they recommend.
Do you have any questions about a system boiler with unvented cylinder? Just pop it in the comments. I’d be happy to answer with something helpful!
