System Boiler Installation Experts

System boilers are central heating boilers that directly heat your central heating system to produce hot water through a storage cylinder. Unlike some traditional boilers, system boilers are closed systems that contain all the components needed for heating within the unit itself, including the pump and expansion vessel – so you don’t need a separate feeder or expansion tank. However, you will require a separate hot water cylinder to store hot water – often this is stored in the loft or an airing cupboard.

If your current boiler is broken, we’ll aim to get you back up and running as soon as possible. Depending on stock availability, some models can be ordered for next day installation, and a typical system boiler install takes as little as 1 to 2 days for a standard replacement in the same location, but could take 2 to 4 days for a more complex installation, e.g. if we have to upgrade your heating system components or add a hot water cylinder.

If you are upgrading to a system boiler from a combi boiler, the new unit may be larger than your existing system. This would depend on the boiler you pick and also how old your current boiler is. Modern boilers of all types tend to be more compact than older models. Generally, you will need a larger overall footprint for a system boiler to accommodate the separate hot water cylinder, but the actual ‘boiler system’ in a system boiler is often smaller than a combi. If you are unsure, please get in touch with one of our experienced team.

Most new boilers come with a five-year manufacturer’s warranty, but this is dependent on the boiler you pick. Some have warranties of up to 10 years.

Again, lifespan depends on the brand and model of the boiler. A high-quality modern boiler should last you at least 10 to 15 years, as long as it is regularly serviced. Entry-level models may need earlier replacement. Investing in quality will also decrease your lifetime cost of ownership by minimising repairs and servicing requirements.

System boilers are perfect for larger homes with high hot water demand or multiple bathrooms/shower rooms, and can be more suitable for efficient hot water delivery than the combi boiler equivalent.

System boiler vs combi boiler

Combi boilers provide both hot water and heating on demand, and are ideal for smaller homes, single bathroom properties, or apartments with lower hot water demand. Combi boilers have a generally compact footprint and do not require separate hot water cylinders. However, when serving multiple bathrooms, a combi may struggle with water pressure, and you are limited by the capacity of the boiler to supply multiple outlets at once.

A system boiler, on the other hand, can feed various hot water outlets – e.g. shower, kitchen, bathroom – simultaneously without losing pressure. This means you are less likely to scald someone in the shower if you switch the hot water tap on in the kitchen!

System boilers from Trusted Boilers – how it works

We offer an all-in-one installation service covering everything you need to get your new system boiler up and running in the shortest possible time.
With a great choice of modern boilers and nationally competitive prices in the UK, we can advise you on the most suitable solution for your home, keeping you warm and cosy and your energy bills as low as possible.

Provides regular annual inspections to multiple properties and does this with no fuss and tenants very happy with his style and efficiency when completing the works. Eric knows his stuff and provides sound advice on what is needed.

J Gandhl

Came out to fix a problem on the day we asked if they were available, and actually explained and solved the problem required, for a reasonable price. Breath of fresh air after an awful experience with a previous company who clearly couldn’t care less and quoted stupidly inflated prices. So so happy with Eric’s work, thank you.

Ally

Eric was brilliant very friendly and professional knows his stuff he set up our Nest Thermostat. Someone you can trust. Will use Trustedboiler again and recommend to family and friends.

G&T

Office was Extremely efficient, prompt and answered all questions. Replies and correspondence was quick and detailed. Engineer was the same! Polite, quick and professional. I don’t think you would get better service and installation anywhere else. Thank you!!

Geoff

Eric and his team responded at short notice, did all the hard work in finding the problem with our boiler, ordering the parts needed and getting the problem solved asap

Adam