Why was your application rejected?

The most common reasons – and how to fix them – 9 February, 2026

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9 February, 2026

Why was your Clean Air application rejected?

A thermomodernization project in progress on a Polish family home

A rejection letter feels like a verdict, but in our experience most rejected applications fail for a handful of avoidable reasons. Here are the ones we see most often at our information point – and what each of them actually means for you.

The audit did not match the works

The improvements listed in the application must be the improvements the audit recommended. Replacing the scope silently – “while we're at it, let's also do the garage door” – breaks the chain between the audit's conclusions and the invoice you submit. The assessor sees an audit recommending one thing and an application claiming another, and the application fails. If the scope has to change, the audit has to change first.

Missing or outdated documents

Income certificates, property records, technical documentation: one expired document stops the whole assessment, because the programme cannot verify eligibility without it. Certificates of income have validity periods; extracts from property registers have theirs. Before submitting, lay every document out on a table and check the issue dates one by one – it is tedious, and it is exactly what we help with at the information point.

The heat source was not on the eligible list

Not every device sold as “ecological” meets the programme's technical requirements. Devices must appear on the official list (ZUM) with the required efficiency and emission parameters. Always check the list before buying, not after – a device purchased outside the list generally cannot be funded, and the invoice will not save it. If a contractor pressures you to buy an unlisted device, that alone is a reason to walk away.

Deadlines missed

The works and the settlement have time limits counted from the grant decision. A project that drags on – because the contractor disappeared, or the materials were back-ordered – can lose its funding entirely. If you see a deadline approaching that you cannot meet, act early: in defined situations an extension can be requested, but almost never after the deadline has already passed.

Simple formal errors

Wrong legal status of the applicant (for example, applying as the owner when the property is co-owned), unsigned pages, arithmetic mistakes, an IBAN with a typo. They sound trivial, and they are – but they are also among the most frequent reasons applications are returned. A second pair of eyes catches nearly all of them.

What to do now – step by step

  1. Read the rejection letter carefully. It must state the reason, and the reason determines the remedy.
  2. Check whether the reason is fixable. Formal errors and missing documents usually can be supplemented; a scope mismatch usually requires a corrected audit and a new application.
  3. Gather what is missing and note any deadline stated in the letter.
  4. Bring the letter to our information point in Rzeszów. We will read it with you, explain exactly what went wrong, and help you do it right the second time.

The good news: most rejections are not the end of the road. Depending on the reason, you may be able to supplement documents or reapply – and a corrected application that has already survived one assessment is usually a strong one. The advice is free; that is what the information point is for.

A rejection letter is a diagnosis, not a sentence. Most diagnoses have a treatment.