Worcester Bosch Specialist Installer

What type of condensing boiler is for you?

Consideration	Most suitable boiler
You want to use your loft space for a room conversion or other purpose	Combi
You live in a flat or bungalow (i.w. you have little or no roofspace)	Combi
Your home has more than 2 bathrooms	Regular or system
Your mains water pressure is low	Regular or system
You want to replace an old boiler to improve an existing conventional central heating system	Regular, system or Combi
The number of peaple in your household means that there is regular demand for hot water on tap, but waiting for the tank to constantly refill and heat up is inconvenient	Combi

What is a combi boiler?
The high-efficiency condensing combi (or combination) boiler is an ingenious space-saving idea, and an increasingly popular choice in UK homes. In fact, combis now account for well over half of all the new domestic boilers installed in Britain every year. The major difference between a combi and any other type of boiler is that a combi eliminates the need to store hot water – so no hot water cylinder in the airing cupboard. It is both a highefficiency water heater and central heating boiler, combined (hence the name) within one compact unit which usually sits in the kitchen or utility room, or sometimes in the airing cupboard. The space savings result from the fact there is no hot water storage cylinder, cold water storage cistern or other familiar components of a regular (conventional) heating system.

What is a system boiler?
Unlike a combi, both a system boiler and a regular (conventional) boiler work on the principle of stored hot water – but a system boiler differs from a regular boiler in two important respects. Firstly, many of the major individual components of the heating and hot water system are built in, which
means that installation is quicker, neater, easier and less costly. Secondly, the hot water is pumped from the boiler through the system to the radiators and hot water cylinder, resulting in fast response and more economical running costs.

What is a regular boiler?
If you’re replacing an older central heating system, the chances are that it will have a regular (conventional) boiler. A typical conventional system incorporates a boiler and controls, a feed and expansion cistern, and a hot water cylinder (usually in the airing cupboard) which is fed by a cold water storage cistern located in the loft.

What else should I consider when investing in a new boiler?

• Quality
  
• Efficiency
  
• Reliability
  
• Controllability
  
• Back-up service
  
• Long-term as well as current needs