Are these units within scope?

As long as:

1. These products can be defined as ventilation units in line with definition 1 of article 2 of the Regulation (EU)1253/2014, i.e. "an electricity driven appliance……intended to replace air by outdoor air in a building")

and

2. These products are not listed in the scope exclusions,

the products fall within the scope of Regulation (EU)1253/2014 and, if the products are RVUs, to Regulation (EU)1254/2014.

_{Disclaimer: Please note that the European Commission cannot provide a legally binding interpretation of the EU legislation, as this is the sole competence of the European Court of Justice. Any remarks from the European Commission services are without prejudice to the position the Commission might take should related cases arise in a procedure before the Court of Justice.}