Where can I store the gas cylinder? This is a question many users and tradespeople ask themselves when they want to have a full one on site as a reserve or, for example, take the LPG installation out of operation for a short time. The cellar is usually the least troublesome place to store them. But is it even allowed to store it there, let alone operate it?
Storing gas cylinders in the basement of residential buildings – is it allowed? We explain what is possible, where clear limits are set, and what you should consider when storing them.
Especially in households where LPG is only occasionally used – for example for barbecues, heaters or emergency use during power outages – the basement may seem like a practical storage location. But this is precisely where a frequently underestimated danger lurks: LPG is heavier than air, can escape in the event of leaks, and accumulate at the lowest point of a room. The result in the event of a leak? A dangerous gas concentration may occur, which could become ignitable under unfavourable conditions. In addition, inhaling LPG can lead to oxygen deficiency and, as a consequence, to unconsciousness. This article explains the applicable regulations, why they make sense, and how to store your gas cylinders safely.
In short: No, this is not permitted – neither in private households nor in commercial settings. This applies regardless of whether the cylinder is full, half-full, or seemingly “empty”. LPG is a highly flammable substance that can quickly accumulate at the lowest point of a room in the event of a leak – and in basements, i.e. rooms below ground level, this is almost always the case.
Many people mistakenly believe that enclosed cellar or utility rooms are safe. In fact, the opposite is true: a leaky valve, damaged seal, or accidental heating can be enough to generate dangerous gas concentrations. Even small quantities are sufficient to create an explosive atmosphere.
That’s why storage in basements, underground garages or similar areas below ground level is strictly prohibited – and for good reason.
The Technical Rules for LPG (TRF 2021) define the provisions for private use. They clearly state: storage in rooms below ground level is not permitted. This includes any rooms whose floor lies more than 1 metre below the surrounding terrain. This applies to typical basements as well as poorly ventilated, low-lying storage areas or shafts. Also prohibited is the placement and storage of LPG cylinders in bedrooms!
For commercial use, the DGUV Rule 110-010 applies additionally. It likewise prohibits storage in enclosed spaces below ground level. Even reserve cylinders must not be placed there. Regardless of the storage quantity, no storage is allowed in passageways (e.g. stairwells, escape and rescue routes, corridors, narrow courtyards). Storage would only be permitted under very specific technical conditions – such as in specially ventilated and explosion-protected areas. These are practically unfeasible in typical settings.
Both regulations agree on one key message: no LPG cylinder storage in the basement.
LPG – i.e. propane or butane and their mixtures – is heavier than air. Even a small amount leaking from a cylinder – due to a faulty valve or damaged seal – will sink and mix with the air. In enclosed rooms below ground level like basements, it can accumulate on the floor and gradually reach dangerous concentrations.
Another risk factor: LPG vaporises at room temperature. This means it already forms an ignitable gas-air mixture under normal conditions. If this mixture comes into contact with an ignition source – such as a light switch, a heating flame, or even static electricity – an explosion or deflagration may occur.
Although such scenarios are extremely rare given the large number of LPG systems in use, they are nonetheless possible. That is why the regulations prescribe preventive measures – and explicitly exclude high-risk storage areas like basements.
In very specific exceptional cases, storage of LPG cylinders in indoor areas below ground level may be permitted – but only under strict technical requirements defined in TRGS 510 (Technical Rules for Hazardous Substances). These include:
These requirements explicitly do not apply to private households. Even in commercial settings, such exceptions are rarely granted – and must be verified and regularly inspected.
Important: Even a seemingly “empty” cylinder is no exception. It always contains residual gas or LPG residues which pose the same hazards if released. Short-term storage “just until tomorrow” is also not allowed. The regulations do not allow any time-based exceptions.
If in doubt, always consult the local fire brigade or a competent expert – particularly in special structural situations such as semi-basements, lower ground floors or combined boiler rooms.
If basements and other rooms below ground level are ruled out – where can you store gas cylinders? The answer is: outdoors – and under clearly defined conditions.
The following basic rules apply:
Tip: For outdoor use, there are regulation-compliant metal gas cylinder cabinets providing safety and weather protection. GOK also offers suitable accessories for both private and commercial applications.
In commercial applications, additional requirements such as quantity limits, signage or special fire protection provisions may apply – these are detailed in TRGS 510.
Storing LPG cylinders in the basement is strictly regulated – and rightly prohibited. Clear requirements apply to both private households and businesses to reliably prevent hazards from leaking gas.
Anyone using LPG should therefore ensure proper outdoor storage. Suitable installation sites and matching accessories ensure safety and functionality at all times – whether for camping and caravanning, trades or at home.
This blog will never ask members of the public or unqualified persons to make changes to or fiddle around with technical systems themselves.
In accordance with the Industrial Safety Regulation (BetrSichV), a qualified person must take care of a system which requires monitoring.
A qualified person is someone who has the specific specialist knowledge required. This knowledge is gained by way of a professional apprenticeship, corresponding professional experience or current occupational activity.
Please note that the texts are based on information, regulations and standards for Germany. Please always check the rules and regulations in the relevant country of destination and consult specialists if necessary.
