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Intergas HRE SB System Boiler

Intergas HRE SB System Boiler

The Intergas HRE SB System is the ideal choice for homes with multiple bathrooms.

A condensing gas wall-mounted boiler, the Intergas HRE SB System is designed to keep your home warm and comfortable year after year. Not only does this boiler boast exceptional efficiency and reliability but it can also meet your heating and hot water demands when connected to a water storage cylinder. The boiler comes in four power outputs to suit most properties, including small, medium and large-sized homes.

How Much Does this Boiler Cost?

The Intergas HRE SB System is available in 18kW, 23kW, 27kW and 41kW outputs and the price will depend on which size you need. This boiler typically costs between £830 and £1,105, including VAT, and you can expect to pay anything from £500 to £1,500 to get the boiler fitted. Installation prices vary depending on how much work your engineer needs to do to fit your new boiler. To compare prices and find the best deal, you need to get a fixed-price quote from a range of local and national Gas Safe registered installers.

How will I know if this Boiler is Suitable for My Home?

This is a system boiler and it won’t be able to deliver hot water without a separate water storage cylinder, so it will take up more space than a combi. However, there is no need for a feed and expansion tank in the loft. The Intergas HRE SB System can supply hot water to multiple baths or showers running at the same time, making it a great choice if you have more than one bathroom. As it comes in four outputs, the boiler is suitable for small, medium and large homes with high hot water demand.

If you’re unsure what type and size boiler you need, ask a trusted heating engineer to visit your home to determine which is the most suitable for your requirements. 

Is it a High Efficiency Boiler?

It is. The Intergas HRE SB System is A-rated for efficiency and Energy Saving Trust recommended, which backs up the brand’s claims that it’s a high-efficiency boiler. The boiler ensures economical operation to achieve a considerable saving in energy consumption and to make sure it’s kind to the environment and your wallet. It can also be used with programmable room thermostats if you would like to benefit from even greater savings.

Does this Boiler have a Good Range of Controls and Features?

Intergas’s HRE SB System has a high-efficiency heat exchanger with a 10-year warranty and a built-in frost thermostat to protect the boiler from cold weather damage. It features a switch-mode power supply to reduce the stand-by losses to almost zero and comes fitted with a modulating control so that the power can be adjusted in line with the required heat. This boiler can also be supplied with a vertical or horizontal flue and works with both regular thermostats and programmable room thermostats.

How long is the Warranty on this Boiler?

The Intergas HRE SB System comes with a 7-year warranty and the heat exchanger has a 10-year warranty.

Summary of Important Information

  • Expect to pay between £830 and £1,105
  • Heating output of 18kW, 23kW, 27kW or 41kW
  • HRE 18 SB Dimensions of 590mm (H) x 450mm (W) x 240mm (D)
  • HRE 24 SB Dimensions of 650mm (H) x 450mm (W) x 240mm (D)
  • HRE 30 SB Dimensions of 710mm (H) x 450mm (W) x 240mm (D)
  • HRE 40 SB Dimensions of 710mm (H) x 450mm (W) x 240mm (D)
  • Uses gas as its fuel source
  • A-rated for efficiency
  • 7-year warranty as standard

Pros and Cons

Since Intergas has a below-average Which? brand test score, it might be a good idea to read customer and engineer reviews before you buy the HRE SB System. That said, the brand has an ‘Excellent’ rating on Trustpilot and this boiler has been endorsed by the Energy Saving Trust, which means it will save energy and money.


  • Suited to small, medium and large-sized homes
  • Can handle high hot water demand with ease
  • Easy to install, use and service
  • Frost thermostat – protected against frost damage
  • Unique two-in-one heat exchanger with a 10-year guarantee
  • Almost no standby losses
  • No air pressure switch
  • Vertical and horizontal flue options
  • Provides maximum energy efficiency – reduce fuel bills and carbon emissions
  • Excellent rating on Trustpilot – correct at time of writing in November 2020
  • 7-year warranty


  • Intergas has an overall Which? score of 52%

Requires separate cylinder

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