We understand that searching for the best system boiler can be a challenging task with so many different boiler manufacturers, outputs and options available.
That’s where we come in. As an independent boiler installation company, we’ve done the hard work for you and compiled this guide of the best system boilers available now.
What makes the best system boiler?
The first thing to consider when choosing the best system boiler for you is the power. No matter the brand, it will need to be powerful enough for your home but not too powerful it costs too much money to run.
At Boilerhut, we have a team of engineers with years of experience. We have called upon them to produce a list of the best system boiler brands and models available today.
In addition to the engineers’ experiences installing these boilers, we have also considered the following: price, warranty, design, material quality, flow rate, customer feedback and customer service.
We’re always happy to give you a quote, and we’re confident we can get you a great deal on the best system boiler that will last you a long time.




Alpha Heating have been designing heating and hot water boilers for many years. They have a good range, wide variety of power outputs and stainless steel heat exchangers.
With a strong UK presence, Baxi has four sites across the UK. These are in Warwick, Preston, Norwich and Wokingham, whilst the company also has numerous training centres around the UK.
#2. Vitodens 200-W
Average 30kW system boiler-only price from £1,763.00 (comparing five or more suppliers, including Screwfix and Plumbase. Correct January 2024).
Average internal 28kW system boiler-only price from £2,337 (comparing multiple suppliers, including Screwfix and Plumbase. Correct January 2024).