Baxi Homeowner Boilers Lifestyle-2

Our Solutions

Heat Only Boilers

Heat only boilers are also known as ‘regular’, ‘traditional’, ‘open vent’ or ‘conventional’ boilers. If you are replacing an old boiler and have a small expansion tank and a larger cold water storage cistern in your loft space, you probably already have a heat only boiler.


If your home has an older heating system, replacing the existing heat only boiler with a new, more efficient model of heat only boiler may be the best option, as the system may not cope with the higher water pressure delivered by a combi or system boiler. Heat only boilers are also a good option for homes in areas with low water pressure and those with multiple bathrooms.

Our Solutions

Baxi 800 Heat Only Boiler

Heat Only Boilers

Baxi 800 Heat

Our Baxi 800 Heat Only boiler comes with a 10-year warranty and filter in the box.


  • 10-year parts and labour warranty
  • Comes with an Adey Micro2 magnetic system filter to protect the heating system and boiler
  • Fits inside a standard kitchen cupboard and a rear flue option for an even neater finish
  • Compatible with market-leading Megaflo Eco cylinder
Baxi 600 Heat Only Boiler

Heat Only Boilers

Baxi 600 Heat

Heat only boilers are also known as regular, conventional, traditional or open vent boilers.


  • 7-year parts and labour warranty
  • Rear flue option for an even neater finish
  • Fits inside a standard kitchen cupboard and a rear flue option for an even neater finish
  • Compatible with market-leading Megaflo Eco cylinder
Baxi 400 Heat Only Boiler

Heat Only Boilers

Baxi 400 Heat

The Baxi 400 Heat has the option of a top or rear flue, making it an easy replacement for old standard efficiency boilers.


  • 5-year parts and labour warranty
  • Rear flue option for an even neater finish
  • Fits inside a standard kitchen cupboard and a rear flue option for an even neater finish
  • Compatible with market-leading Megaflo Eco cylinder
Potterton Titanium Heat only Boilers

Heat Only Boilers

Potterton Titanium Heat

The Potterton Titanium heat boiler has a 7-year parts and labour warranty and can be installed with a hot water cylinder.


  • 7-year parts and labour warranty
  • Rear flue option for an even neater finish
  • Fits inside a standard kitchen cupboard and a rear flue option for an even neater finish
  • Compatible with market-leading Megaflo Eco cylinder
Baxi Homeowner Boilers Lifestyle-8

What is a heat only boiler?

Heating systems for heat only boilers need two water tanks in the loft, a hot water storage cylinder and a pump to push the hot water around the system, as well as a timer and room thermostat. One of the tanks draws water from the mains and fills the hot water cylinder, which is then heated by the boiler to supply plenty of hot water to all the taps in the home. The other tank, commonly known as the feed and expansion tank, is usually smaller and keeps the water in the heating system at the correct level. It also allows for expansion in both tanks when the water gets hot.

The real benefit of a heat only boiler is that several hot water taps can be run at the same time, making it the perfect option for busy families and homes with several bathrooms.

Since the Building Regulations changed in April 2018, known as Boiler Plus, all boiler installations must include a timer and room thermostat.

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