Mamad Air Conditioning and Rentals in Israel: Rules and Constraints

Installing a mazgan in a mamad requires respecting the structural integrity of the secure room by avoiding any non-compliant drilling of the armored walls. The owner must ensure that the outdoor unit complies with the building’s regulations and that condensate drainage does not degrade the structure. The allocation of costs follows a logic of usage: the owner covers the equipment and major repairs, while the tenant manages routine maintenance and consumption.

Installing a mazgan in a mamad: obligations and technical limits

A mamad is not an ordinary room. Its function for civil protection imposes strict physical constraints. Unlike a standard bedroom, the walls consist of thick reinforced concrete and armored doors. Drilling these walls to pass communication lines or refrigerant pipes presents a major risk: compromising the airtightness and structural resistance of the room. Improper drilling can invalidate the security certification of the residence.

We recommend having the location of the passages verified by a professional specialized in armored structures before any work begins. This is not about performing a formal inspection, but ensuring that the installation of the mazgan does not weaken the steel reinforcements. If drilling is necessary, it must be performed with specific tools to avoid excessive vibrations that could damage the seals of the mamad door. A poor installation can also hinder the function of Interphone and mamad: checking operation and connection, as wiring can cross or create interference.

Airtightness is the primary point of vigilance. The mamad must remain a hermetic unit in the event of an alert. The installation of an air conditioning system must include specific sealing joints for every conduit passage. We systematically verify that cable passages are resealed with certified materials to maintain the protective properties of the room.

Building regulations and vaad bayit approval

Installing an outdoor air conditioning unit is not solely at the owner’s discretion. In Israel, a building’s facade is considered a common area. The location of the outdoor unit must be validated by the vaad bayit (homeowners association). A tenant or owner cannot fix a mazgan bracket to an exterior wall without the explicit agreement of the association, especially if it modifies the aesthetics of the facade.

The vaad bayit may impose specific rules:

• The use of specific brackets to limit vibration and noise.
• The obligation to place units in designated areas (balconies or technical shafts).
• The prohibition of leaving visible cables along exterior walls.

If the installation requires passing lines through common areas or using shared ventilation ducts, a formal request must be addressed to the vaad bayit. We review the building regulations to identify these restrictions before any lease or work contract is signed. Ignoring these rules exposes the owner to the obligation of immediate restoration at their own expense, with no possibility of recourse against the tenant.

Allocation of installation and maintenance costs for the mazgan

The financial management of air conditioning is based on a distinction between investment and operation. The owner is responsible for providing functional and compliant equipment. This includes the purchase of the unit, the initial installation, and replacement in the event of a major failure. The tenant, for their part, assumes responsibility for maintenance related to daily use.

In the event of a compressor failure, responsibility lies with the owner, unless it can be proven that the failure results from manifest negligence by the tenant (such as failure to maintain filters). Conversely, replacing remote control batteries, cleaning filters, or recharging gas due to intensive use are tenant expenses. To avoid disputes, we advise including a precise clause in the lease agreement detailing these points.

Electricity consumption related to the mazgan is generally directly linked to the apartment’s individual meter. However, in some older buildings where the distribution of charges is complex, it is necessary to verify if the mazgan is connected to a common circuit. In such cases, a calculation method based on the power of the unit and usage time must be established to bill the tenant via our property management or a direct agreement.

Securing the installation against leaks and humidity risks

A mamad is often a room without windows, which naturally limits air circulation and moisture evacuation. A faulty mazgan installation can lead to an accumulation of condensate. If the drainage pipe is poorly oriented or obstructed, water can flow directly onto the mamad walls, causing mold or infiltration into the concrete.

The risk of water damage is real, not only inside the room but also for neighbors on lower floors if the outdoor unit leaks. In the event of a claim, the owner’s liability may be engaged if they did not have a professional perform a compliant installation. To prevent these risks, we recommend performing a Mamad ventilation and compliance for renting in Israel during commissioning.

In some cases of major renovation or the installation of central air conditioning systems, it may be useful to request a bedek bayit (building inspection) to verify the overall airtightness of the envelope after the work. This ensures that the passage points created for the mazgan have not created thermal bridges or pathways for moisture to enter the structure.

mamad equipment: tenant comfort vs. technical compliance

The choice of air conditioning type directly influences the living volume and the acoustic comfort of the secure room. The classic « split » model is the most common in Israel, but its installation in a mamad requires precision to avoid cluttering the space. In a room whose function is also to serve as a shelter, floor space must be kept to a minimum.

There are two main approaches:

1. Standard split installation: requires drilling for refrigerant lines and a wall-mounted indoor unit.
2. Integrated systems: more expensive, they better respect the aesthetics and volume of the room, but the technical complexity of installation in an armored wall is increased.

The tenant primarily seeks immediate thermal comfort, especially during summer months. However, the owner must ensure that the mazgan power is adapted to the room’s volume. An undersized unit will consume electricity unnecessarily without cooling effectively, while an oversized unit will cause incessant start/stop cycles, prematurely wearing out the compressor and increasing noise levels in the room.

Managing air conditioning disputes at the end of a lease

The end of a lease is a critical period for verifying technical installations. The tenant must return the apartment in the condition in which it was received. If the tenant installed their own mazgan with the owner’s agreement, the question of restoring the mamad wall arises. Drilling holes in armored concrete cannot simply be filled with standard plaster; they require structural repair to restore the original appearance and solidity.

To secure these interventions, we use the shtar ’hov (promissory note). If the tenant is responsible for the work, the signed shtar ’hov can serve as a guarantee to ensure that the work is carried out according to professional standards and that any damage caused to the structure will be covered. This protects the owner against makeshift repairs that would degrade the property value.

During the move-out inspection, we perform a specific verification of the air conditioning unit:

• Absence of moisture or mold traces on the mamad walls.
• Effective operation of the cooling cycle.
• Condition of the outdoor unit’s mountings on the facade.
• Absence of cracks around the conduit passage points.