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If your building misses the HeizkostenV remote‑metering deadline (31 Dec 2026): how tenant heating‑cost rebates are calculated and short‑term landlord options
The Heizkostenverordnung requires remote‑readable heat and water meters in existing buildings by 31 December 2026. If the owner misses that deadline, tenants have a statutory right to reduce their billed heating/warm‑water share by 3 % (per missing duty). This article explains how the 3 % is applied, when it can be combined with other reductions, and practical short‑term steps landlords can take to avoid or limit deductions.
What the law requires and the deadline
The relevant regulation is the Verordnung über die verbrauchsabhängige Abrechnung der Heiz‑ und Warmwasserkosten (Heizkostenverordnung, HeizkostenV). The 2021/2022 amendment requires that existing heat‑, hot‑water and in‑some‑cases cold‑water meters that were installed before the amendment be retrofitted or replaced so they are remotely readable and interoperable. The statutory deadline for retrofitting or replacement for existing devices is 31 December 2026. A central text of the rule and the deadline is available in the official HeizkostenV publication. ([gesetze-im-internet.de](https://www.gesetze-im-internet.de/heizkostenv/BJNR002610981.html?utm_source=openai))
What tenants can deduct — the 3 % rule and how it’s calculated
Section 12 of the HeizkostenV creates specific reduction rights for users. If the owner has not installed remotely readable devices as required by § 5 (the retrofit duty), the tenant "has the right to reduce the portion of the costs attributable to them by 3 per cent". The same 3 % figure applies if the owner fails to provide the information prescribed in § 6a. The legal text is explicit: the 3 % is a reduction of "the share attributable to the user" on the heating/warm‑water bill — in practice that means the tenant reduces the heating cost line (their billed share) by 3 %. ([gesetze-im-internet.de](https://www.gesetze-im-internet.de/heizkostenv/__12.html))
Can the 3 % reductions be combined with other deductions?
Yes — the 3 % rules are separate grounds that can stack with other statutory rights. The law already provides for a 15 % reduction where costs are not billed on a consumption‑related basis; additional 3 % reductions apply for missing retrofit duties and for missing disclosures under § 6a. Commentary and tenancy‑association guidance explain that the 3 % reductions are cumulative with each other and with the 15 % reduction where applicable; case‑by‑case legal questions can arise on quantification and timing of a tenant’s claim. In other words, a tenant can in principle deduct 3 % for missing remote meters and another 3 % for missing information, on top of a 15 % deduction where the supplier did not bill on a consumption basis. ([gesetze-im-internet.de](https://www.gesetze-im-internet.de/heizkostenv/__12.html))
Short‑term compliance options for landlords (practical steps)
1) Inventory and prioritise. Immediately audit all apartments to identify which meters are non‑remote and which are already interoperable remote meters. 2) Rapid retrofit or replacement. Order interoperable, remotely readable devices and a certified installer. The statutory obligation is technical: replacing or retrofitting devices before 31 December 2026 removes the legal ground for a 3 % deduction. 3) Provide the required information. § 12 also ties the 3 % to a failure to supply the information required in § 6a. If you can lawfully compile and communicate the consumption and billing information that § 6a requires (even as an interim manual measure), that may eliminate that separate 3 % risk. 4) Document and communicate. Record dates of orders, installation receipts and the information you supply; tenants are more likely to accept a bill if you show steps taken towards compliance. Industry guidance recommends prioritising buildings where retrofits are quick and where tenant exposure is greatest. These are practical mitigations, not legal advice — consult a specialised solicitor if you face contested deductions. ([vdiv.de](https://vdiv.de/publikationen/vdiv-handlungsempfehlung-ausstattungs-und-informationspflichten-gemaess-heizkostenverordnung-umsetzungsfrist-bis-31122026?utm_source=openai))
What landlords should watch for and next steps
Do not assume tenants will not enforce the reduction: reputable tenant associations and advisers publish model letters and guidance on asserting the 3 % right. If you are responsible for a portfolio, start procurement and installation now. Keep communications factual and timestamped. If a tenant deducts 3 % and you dispute it, the matter commonly ends up in local courts or is resolved by negotiation; seek legal advice early. For readers planning purchases or investments, include the retrofit cost and timetable in your due diligence. ([berliner-mieterverein.de](https://www.berliner-mieterverein.de/downloads/infoblaetter/fl186.pdf?utm_source=openai))
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