Useful Information 

Welcome to our Useful Information section — here you’ll find practical advice to help you get to know your home’s plumbing and heating systems a little better. Whether you’re trying to identify what kind of boiler system you have, want to learn how to safely top up your boiler pressure, or just need everyday tips to keep things running smoothly, we’ve got you covered. Our goal is to give you clear, straightforward guidance to help you spot issues early, improve efficiency, and stay in control of your home's heating and water.



Please remember: This information is intended as a helpful guide only. If you’re ever unsure or not confident carrying out any checks or maintenance, always seek advice by contacting us directly on


0191 511 1008 | 07447944924 or email info@lakesheating.co.uk

Heating Systems

There are three main types of boiler systems commonly found in UK homes: Combi, System, and Regular (or Open Vented).


A Combi boiler is the most compact option, providing heating and hot water directly from the mains without the need for tanks or cylinders — ideal for smaller homes or properties with limited space.


A System boiler requires a separate hot water cylinder but no loft tank, making it suitable for homes with higher hot water demand and multiple bathrooms.


Finally, a Regular boiler (also known as an open vented or conventional boiler) uses both a hot water cylinder and a cold water storage tank in the loft. These are typically found in older or larger properties and are often compatible with traditional heating systems.


Understanding which system you have can help with maintenance, efficiency, and when considering an upgrade — and if you're unsure, we're happy to help you identify it. 


The below images is typically what each system will look like. 

Combi Boiler (Combination Boiler)

A Combi boiler heats your radiators and provides instant hot water directly from the mains — no need for tanks or cylinders.

Common in: Smaller homes or flats
Pros:

  • Compact – ideal where space is limited

  • Instant hot water on demand

  • No need for a separate hot water cylinder

Things to know:
Combi boilers may struggle to supply high volumes of hot water to multiple taps or showers at once.

System Boiler

System boiler uses a separate hot water cylinder (usually in an airing cupboard) but no cold water tank in the loft. Ideal for homes with more than one bathroom.

Common in: Medium to large homes
Pros:

  • Delivers hot water to multiple taps at the same time

  • No loft tank needed – sealed system

  • More efficient than a regular boiler in many cases

Things to know:
You’ll need to wait for the hot water cylinder to reheat once it's been used up.

Regular Boiler

A Regular boiler sometimes known as Open-Vented or Conventional) uses both a hot water cylinder and a cold water storage tank in the loft. This is a more traditional setup, often found in older homes.

Common in: Larger or older properties
Pros:

  • Works well with older radiator systems

  • Can supply hot water to several outlets at once

  • Ideal for homes with low water pressure

Things to know:
Takes up more space, and installation is more complex if switching from another type.