Could Austria make it easier to install air conditioning in apartments?

Could Austria make it easier to install air conditioning in apartments? Austria's housing minister plans to ease air conditioning installation in flats. Learn current rules for tenants and owners, what Babler proposes, and when reforms may come. Topics: News, Housing, Politics.

The summer of 2026 is breaking temperature records across Austria, making air conditioning installation in apartments one of the most pressing issues in the country. Vice-Chancellor and Housing Minister Andreas Babler (SPÖ) announced in the Bundesrat on July 16 plans to significantly simplify approval procedures for cooling systems, external blinds, and sun-protection coatings. Here is what the government proposes, what rules for tenants and owners apply today, and when the reform might take effect.

Why installing air conditioning is complicated in Austria

The main legal hurdle is that an efficient split system affects more than just the inside of a flat. The outdoor unit attaches to the façade, refrigerant pipes run through walls, and the compressor generates noise. All of this constitutes a bauliche Veränderung (structural alteration) requiring approval.

According to the Austrian Parliament, current regulations are based on the Mietrechtsgesetz (MRG — Tenancy Act) and Wohnungseigentumsgesetz (WEG — Condominium Act). Courts apply a strict test: whether the installation is “customary practice” or “serves an important interest.” Babler argued that air conditioning should no longer be automatically treated as a luxury in 2026.

What Minister Babler is proposing

Andreas Babler spoke during a “Current Hour” debate in the Bundesrat dedicated to “Hot summers — cool apartments.” According to Der Standard, his ministry and the Justice Ministry are working on amendments to MRG and WEG to streamline consent. The proposal covers:

• Air conditioning systems (split and multi-split)
• External blinds (Außenjalousien)
• Roller shutters (Rollläden)
• Sun-protection coatings for windows

Babler noted that Vienna has already shown a pragmatic approach by simplifying AC installation in Gemeindewohnungen (municipal housing). The federal government aims to extend this approach nationwide. However, no draft bill or concrete timeline has been published yet.

Current rules for tenants

A tenant cannot install a fixed air-conditioning system without first clarifying the legal position with the landlord. According to the Lower Austrian Chamber of Labour, a permanent system is treated as a structural alteration to the rented property.

Required steps for tenants (Mieter):

• Notify the landlord in writing with a detailed plan of the work
• Include technical documentation, installation description, and a cost estimate
• In flats covered by full MRG protection, the landlord has 2 months to object
• No response within that period means consent is treated as granted

Important: these rules do not apply identically to every tenancy. The Upper Austrian Chamber of Labour warns that tenants in some housing types may need explicit written approval.

The landlord can object if the installation is not technically appropriate, damages the building, affects its appearance, creates a safety risk, or interferes with the legitimate interests of other residents. Installing a fixed unit without permission risks legal action and having to remove it at the tenant’s own expense.

What apartment owners need to know

Owning an apartment (Eigentumswohnung) does not mean complete freedom — the façade, roof, and other common parts of the building are jointly owned. Established case law from Austria’s Supreme Court means that attaching an air-conditioning unit to the exterior façade requires approval.

Under WEG §16, mounting an outdoor unit requires the consent of a majority of co-owners (by share). If neighbours refuse, the owner can apply to the competent district court. A court decision can replace the missing consent if the installation does not damage the building and serves an important personal interest. However, this process takes time and involves legal costs.

Portable air conditioners — a permission-free alternative

The good news: portable air conditioners (monoblock units) do not require permission from landlords or neighbours. They can be used in any flat since they do not constitute a structural alteration.

However, portable units have drawbacks:

• Lower efficiency — SEER 6–8 compared to 18–24 for split systems
• Higher electricity consumption
• The exhaust hose must be routed through a window, reducing cooling effect

For tenants who cannot obtain permission for a split system, portable ACs remain the only legal alternative.

Political debate and party positions

The reform has drawn scepticism from some quarters. FPÖ representatives Andreas Arthur Spanring and Günter Pröller called the initiative “symbolic politics” and pointed out that many households cannot afford either the purchase of an AC unit (€700–2,500) or the rising electricity bills.

Coalition parties called for a comprehensive approach: green roofs, façade greening, insulation, and shading. NEOS stressed the need for legal certainty for both tenants and landlords.

This is about health, not just comfort. People with chronic conditions, the elderly, and children are especially vulnerable to heat. Everyone has the right to a home where they can live safely.

— Christian Fischer (SPÖ), Bundesrat member

What to expect from the reform

Exact parameters of the changes have not yet been published. Babler stated that amendments could be introduced relatively quickly, but no concrete bill or timeline exists. Possible directions include:

1. Relaxing the “customary/important interest” test — AC units would no longer be treated as luxury items
2. Simplifying consent procedures for standard split systems
3. Strengthening tenants’ positions for those who need heat protection for health reasons
4. Extending Vienna’s simplified rules to the federal level

Follow the developments — we will report on the adopted amendments as soon as they are published. In the meantime, subscribe to our newsletter to stay updated on Austrian housing law news.

Frequently Asked Questions

Can I use a portable air conditioner without permission? Yes, portable monoblock units do not require approval as they are not considered structural alterations.

What if my landlord refuses permission for AC? Check if your tenancy falls under full MRG protection. If so, the landlord has 2 months to issue a reasoned refusal. Unreasonable refusals can be challenged in court.

Do I need neighbour consent to install AC? For tenants — the landlord’s consent suffices (the landlord handles neighbour relations). For apartment owners — majority consent of co-owners is required if the outdoor unit affects common property.

How much does a split-system AC cost to install in Austria? Equipment: €700–2,500, installation: €900–1,600, with possible extras for noise assessment (€200–400) and permit fees (€50–150).