Southern office: 020 8464 0915 / Northern office: 0161 308 4550

ErP Directive for Warm Air
heaters 2018

With the new ErP Directive For Warm Air Heaters 2018 looming, we have compiled a series of helpful questions that will help you understand what the new ERP directive is, and how it will affect warm air heaters in 2018 and beyond.  Be sure to look for ErP logos on all compliant product brochures from 2018.
Need expert advice?
Are you looking for advice on how to efficiently heat your workplace / premises? Then please use our free online site survey tool to correspond today with one of our experts.
Customer testimonials
Oxted colour Printers - Surrey
“Fantastic job! Harry Taylor could not have been more helpful. Very tidy & excellent work.
KEF audio -
“Many thanks for a great job. The engineers were most helpful and provided great support.”
BESCA has been established by the Heating and Ventilating Contractors' Association to act as an independent assessment and certification body for the building services industry. Under the Government’s “Enhanced Capital Allowance” scheme, these producst attract Tax benefit for the “End –User” businesses purchasing them.  Under the scheme the full value of an installed system can be written off against Corporation Tax in the year of purchase.  This can lead to quite a financial saving. A market leader, committed to consistent high standards, Harry Taylor has had continual CORGI registration (number 1425) since well before this became a mandatory requirement in 1991. Recognising the benefits to its customers of the BS5750 quality standard the company has been registered with SGS (UK) Ltd since 1996, and has now converted to ISO9001:2000 with its emphasis on customer focus.  CORGI is the national watchdog for gas safety in the United Kingdom until March 31st 2009. From 1 April 2009, Gas Safe Register™ will be the official stamp for gas safety in Great Britain.
What is the ErP 2018 directive for warm air and radiant heaters?
The Energy Related Product Directive 2009/125/EC (ErP for short) is a European Council Regulation which implements a series of measures for reducing greenhouse gas emissions. Warm air heaters are covered by the scope of Lot 21 of the Directive. Both radiant tube and radiant plaque gas fired heaters are covered by the scope of Lot 20 of the Directive.

Does it affect the heaters I purchase, install or specify?

Yes, where those heaters are specifically applied to provide thermal comfort for human beings.

Are there applications where the ErP Directive for Warm Air Heaters 2018 does not apply?

Yes, if the heaters are used for the applications below, technically the ErP regulations do not apply. However installers, specifiers and end users should consider the benefits of applying compliant heaters as they may well offer benefits.

The applications where ErP Directive for Warm Air Heaters 2018 doesn’t apply are:

  • Door curtains
  • Agricultural heating
    (ie poultry houses)
  • Horticultural heating
    (ie glasshouses)
  • Process heaters/dryers
  • Frost protection of perishable


Does the regulation apply to air handling units as well as air heaters?

Yes, this is specifically covered within the Directive.

Does the regulation cover oil, gas, LPG and bio fuels?


What does the Erp Directive For Warm Air Heaters require?

The implementation and requirements of the Directive in respect of warm air heaters become effective as from:-

1st January 2018;

  • From this date all warm air heaters which are used to provide thermal comfort for human beings must achieve a seasonal efficiency of more than 72%

And from the 26th September 2018;

Additionally, NOx emissions must not exceed:-

  • For gas fired warm air heaters  100 mg/kWh (gross)
  • For oil fired warm air heaters 180 mg/kWh (gross)

There are further changes due from the 1st January 2021, these will be covered by a  separate bulletin closer to the implementation date.

What do you mean by seasonal efficiency?

 The seasonal efficiency calculation required under the Directive takes into account  the thermal efficiency at both full and part load conditions as well as airflow,  temperature rise across the heat exchanger and power consumption.

Why does the efficiency threshold seem lower than those currently achieved?

 This is because the European Council have chosen to use gross calorific values  rather than the nett calorific values that are currently used to determine thermal  efficiency.

So are the heaters just as efficient as they used to be?

Yes, and in most cases more so.

How will the heaters change on the 1st January 2018?

In the short term the heater products that are familiar to you will remain largely  unchanged. The key differences are as follows:-
If heaters are to be used for providing comfort for human beings then from 1st January 2018 both suspended and cabinet heaters will be configured to either operate with modulating or high/low output as standard.
If heaters are to be used in ‘non-comfort’ heating applications (see question 4) then it may be possible to specify product in on/off configuration where such formats are available.







Information for the ErP directive for Radiant heaters is also available on our website.
click here
Local service with national support
from the company with the know-how
Call us now on:
020 8464 0915
0161 308 4550 (North)
In addition you can visit the contact section of our website for web form enquiries.
Related pages
Energy efficiency
EU energy performance directive
Environmental policy
© All images and content property of Harry Taylor of Ashton Ltd unless otherwise stated.
Click here to read the Harry Taylor of Ashton privacy policy