On April 6 2018, changes to technical standards under Building Regulations Approved Document L1b (also known as Boiler Plus) came into effect and apply to England only.

The main changes are:

1) Seasonal space heating efficiency of the new boiler no less than ErP 92%

2) Time and temperature control required for all installations

3) All combi installations must also include one of the following:

  • Weather compensation
  • Load compensation
  • Flue Gas Heat Recovery
  • Smart control with automation and optimisation

Please find below an easy to use table which demonstrates the different options available to you to ensure Boiler Plus compliance.
 

Boiler plus compatibility matrix

Below are examples of how you can meet Boiler Plus compliance by product.

  • Baxi 600
  • Baxi 400
  • Baxi 200
  • Baxi Platinum
  • Baxi Duo-tec

Baxi-600-combi

+

baxi-usense

=

Boiler Plus Compliance tick
Baxi 600
Baxi uSense smart thermostat
Baxi-600-combi

+

baxi-usense

+

IFOS sensor

=

Boiler Plus Compliance tick
Baxi 600
Baxi uSense smart thermostat
Baxi IFOS weather compensation
Baxi-600-combi

+

Time and temperature

+

IFOS sensor

=

Boiler Plus Compliance tick
Baxi 600
Baxi IFOS weather compensation

 

baxi 400 combi

+

baxi-usense

=

Boiler Plus Compliance tick
Baxi 400
Baxi uSense smart thermostat
baxi 400 combi

+

baxi-usense

+

IFOS sensor

=

Boiler Plus Compliance tick
Baxi 400
Baxi uSense smart thermostat
Baxi IFOS weather compensation
baxi 400 combi

+

Time and temperature

+

IFOS sensor

=

Boiler Plus Compliance tick
Baxi 400
Baxi IFOS weather compensation

 

baxi 200 combi

+

baxi-usense

=

Boiler Plus Compliance tick
Baxi 200
Baxi uSense smart thermostat
baxi 200 combi

+

baxi-usense

+

IFOS sensor

=

Boiler Plus Compliance tick
Baxi 200
Baxi uSense smart thermostat
Baxi IFOS weather compensation
baxi 200 combi

+

Time and temperature

+

IFOS sensor

=

Boiler Plus Compliance tick
Baxi 200
Baxi IFOS weather compensation

 

baxi platinum combi

+

baxi-usense

+

IFOS sensor

=

Boiler Plus Compliance tick
Baxi Platinum
Baxi uSense smart thermostat
Baxi IFOS weather compensation
baxi platinum combi

+

 Time and temperature

+

IFOS sensor

=

Boiler Plus Compliance tick
Baxi Platinum
Baxi IFOS weather compensation

 

Baxi Duo-tec

+

baxi-usense

+

IFOS sensor

=

Boiler Plus Compliance tick
Baxi Duo-tec
Baxi uSense smart thermostat
Baxi IFOS weather compensation
Baxi Duo-tec

+

Time and temperature

+

IFOS sensor

=

Boiler Plus Compliance tick
Baxi Duo-tec
Baxi IFOS weather compensation

 

 

Please see the attached guide for compatible controls and accessories.

For further details about Boiler Plus, book onto one of our free of charge practical hands on training days.

Listen to the Boiler Plus Podcast

 

Background

In 2005 Approved Document L of the Building Regulations changed to require the installation of condensing boilers. Since then, there has been very little in the way of changes to minimum standards for heating installations.

In September 2015 the EcoDesign of Energy Related Products Directive (ErP) was introduced, which takes a more holistic view of heating system efficiency by recognising the impact of controls on the overall "package” of installed components.

The Department for Business, Energy and Industrial Strategy (BEIS) launched a consultation document in December 2016, and the subsequent policy changes concerning minimum requirements when installing boilers in existing buildings were effective from 6 April 2018, in England only.

The changes are not only beneficial to efficiency and emissions but are also easily adopted, low cost and simple to factor into a boiler installation:

  • Getting the best deal for consumers
  • Making it easy for installers
  • Attaining measured and sustainable fuel use reduction.

Frequently Asked Questions

Q What will happen if I don't comply?

A It is a legal requirement to comply with Building Regulations, failure to do so could result in enforcement action. Further information on compliance and competent persons is available here: https://www.competentperson.co.uk/pdfs/buildingworkleaflet.pdf

Q What should I do if my customer doesn't want the extra measures?

A There is also a duty on the householder to comply with Building Regulations please refer to the previous question for further guidance.

Q Why are boilers rated differently for SEDBUK, SAP and ErP?

A Because the method of calculation for boiler efficiency is different for all three ratings.

Q What support or training can you offer?

A Our product training courses include an overview of the changes to the Building Regulations and what is required to comply. We will also provide information on our websites.

Q What is FGHR?

A Flue Gas Heat Recovery (FGHR) is an energy efficient device that recycles the heat from the flue gases which would normally be expelled into the atmosphere and uses it to preheat domestic hot water.

Q What is weather compensation?

A Weather compensation is a device that communicates between the boiler and an outside temperature sensor. It tells the boiler to alter the flow temperature in relation to the weather outside, leading to fuel saving and a consistent environment.

Q What is load compensation?

A Load compensation works by measuring the response of the heating system and controlling the flow temperature depending on the required load. When the boiler first fires, the increase in the return temperature is measured, giving an indication of the required load, and the boiler varies the flow temperature accordingly. The changes in the return temperature are then monitored and the flow temperature adjusted accordingly. This can reduce fuel consumption.

Q Does uSense comply with Boiler Plus?

A uSense complies with Boiler Plus when it is connected using Open Therm, because it provides load compensation functionality.

Q Where can I find more information?

A You can find the updated Domestic Building Services Compliance Guide here

Q When fitting a Plume Displacement Kit to a boiler, can I still install an IFOS?

An IFOS can be fitted to a boiler when installed with a Plume Displacement Kit.

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