Mechanical Installations Blog


Ground source heating/cooling utilises heat pump technology. A heat pump is a device that moves heat energy from one place to another and from a lower to a higher temperature, or visa versa. Heat pumps are available as both heating only or reverse cycle heating/cooling systems and are classified according to the type of heat source and the heat distribution medium used.

There are many different variations of ground source energy systems available, but the main types involve utilising the natural thermal conditions of the ground, large bodies of underground water, or large bodies of surface water. Ground source heat pump systems (GSHP) can be used for heating or cooling purposes and obtain their thermal energy from the ground, which has a much more stable temperature profile throughout the year. For heating, the system pump-extract the heat from the underground and distributes it through a pipe system. For cooling, the process works in the opposite way, extracting heat from the building and injecting it into the ground.

heat pumps

A GSHP system contains three main components:

1) The ground side to get heat out of or into the ground.

2) The heat pump to convert that heat to a suitable temperature level.

3) The building side transferring the heat or cold into the rooms.

heat pumps

The system is a process which allows the transport of heat from a lower temperature level to a higher one, by using external energy. The thermodynamic principle behind a compression heat pump is the fact that a gas becomes warmer when it is compressed into a smaller volume. In a heat pump, a medium with low boiling point (“refrigerant”) is evaporated by the ground heat, the resulting vapour (gas) is compressed (by using external energy, typically electric power) and thus heated, and then the hot gas can supply its heat to the heating system. Still being in the high pressure part, the vapour now condenses again to a liquid after the heat has been transferred. Finally, the fluid enters back into the low-pressure part through an expansion valve, gets very cold and can be evaporated again to continue the cycle.

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cooling systems


Cooling storage using water, ice or other phase change materials is widely used in countries where summertime cooling requirements are high.


The greatest benefit of this system is delivered to buildings which have relatively low nighttime compared to their daytime peaks. Additional benefit may be gained through the use of electricity to generate cooling on potentially lower cost off-peak tariffs. The advantages in a well-designed and operated system can include:

  • Reduced installed chiller and heat rejection capacity;
  • Decoupling of cooling demand from production allowing the opportunity to use lower energy tariffs;
  • Possibility to use lower night time ambient temperatures for heat rejection giving improved COPs and energy performance;
  • Potential to more easily operate variable flow systems due to the buffering effect reducing rapid changes in operation; and
  • The non-instantaneous nature of cooling production can give higher reliability than reliance on the chiller operation. 

In order to fully optimize the system’s capital investment and operating costs of the cooling equipment and infrastructure the correct sizing of the equipment is critical.


When designing the cooling systems to be utilised, the profiles of the required cooling load are key. The demands placed on plant over periods of 24 hours and weekly are required in conjunction with the peak values for the design of the cooling accumulator systems. This is to ensure that the total cooling loads are accounted for during the whole storage cycle which may extend beyond the commonly used 24 hour period. The cooling storage system must be designed carefully to be able to meet the extended loads over time as well as peak demands.


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natural ventilation


Natural ventilation systems are intended to provide sufficient outside air to achieve appropriate standards of air quality and to provide cooling when needed. Since the cooling capacity of natural ventilation is limited, a key design challenge is to limit heat gains through good solar control and careful management of the internal gains. Naturally ventilated buildings do not aim to achieve constant environmental conditions, but take advantage of dynamics to provide comfortable, controllable conditions for the occupants

Natural ventilation systems need to be designed to achieve two key aspects of environmental performance:

  • Ventilation to maintain adequate levels of indoor air quality
  • In combination with other measures, ventilation can reduce the tendency for buildings to overheat, particularly in summer

natural ventilation

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mechanical installations


( A)

A solar system is installed to provide domestic hot water .The  Solar system uses all the available solar energy and at times when it’s not enough an electric element.

The solar system consists of  2 Solar panels 1.5×1.0  & a 200 Litre  Hot water cylinder.


( B)

A multi split system is installed for the space air conditioning and heating of the villa. The system consists of  air cooled  Outdoor units and  Indoor units ( Wall type) . The benefits of the air cooled Multi system from the spit unit type air conditioning is the efficiency and less number of outdoor units and the ability to install the outdoor units much longer distance from the indoors .


( C)

A complete plumbing system is installed consisting of : ( a)  Central pipes using Pex-C pipe in pipe piping and manifolds for the piping of all the sanitary fittings for both the hot and cold water as well as the drinking water through out the project.  ( b ) A complete sewage system consists of all the pvc plastic piping for all the sanitary fittings to the first outside manhole. ( c ) Connection of all the sanitary fittings to the plumbing and sewage piping and installation of all the accessories. ( d ) 1 pressure pump system per apartment  to provide high water pressure to all the sanitary fittings,

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We’re Hiring – Swimming Pool Technician Vacancy

Η εταιρεία Z&X Mechanical Installations Ltd στη Πάφο ζητά άμεσα να εργοδοτήσει για θέση τεχνικού για πισίνες.

Απαραίτητη προϋπηρεσία σε σχετικό τομέα.

Απαιτούνται γνώσεις και εμπειρία εγκατάστασης επένδυσης πισίνας, εγκαταστάσεις εξοπλισμού μηχανοστασίου καί γενική αντιμετώπηση σχετικών προβλημάτων.

Τρόπος υποβολής αιτήσεων
Οι υποψήφιοι θα πρέπει να αποστείλουν ηλεκτρονικά το βιογραφικό τους στην ηλεκτρονική διεύθυνση

Z&X Mechanical Installations Ltd in Paphos is now recruiting for the position of swimming pool maintenance technician.

Previous experience in a relevant sector is required. 

Knowledge and experience on fitting liners, installing plant room equipment and general troubleshooting is required.  

How to apply
Candidates should send their CV to

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swimming pool

Top 4 Swimming pool shapes and styles

Once you have decided on the type of construction and chosen our professional builder, the next step is to implement the design. Take a look at these popular pool shapes to learn how they are best used. Then when you consult with your designer, you’ll have a better idea of which options can be accommodated.
1. Infinity Pools
swimming pool
Infinity pools are one of the most dramatic effects found in pool design. Made to outwit the viewer into believing that the pool flows over an edge into the neighboring vista, this type of swimming pool is actually a product of math and science: the water flows over the pool’s weir wall into a hidden trough where it’s recycled back into the pool. Homes that overlook spectacular scenery like the ocean, a river, mountains, or even nearby cityscapes are the best candidates to capture this design’s magic. However, a designer will also suggest an infinity pool for a property that is surrounded by natural lushness like wooded glens or palm tree groves.
2. Perimeter-Overflow Pools
swimming pool

Perimeter overflow pools are an optical illusion that uses water to imitate mirrors and flat deck surfaces. Water overflows on all sides into a trough in the deck, functioning like a 360-degree vanishing edge. When viewed from overhead or from afar, the pool appears to be a flat surface on the deck. It is only when the wind or some other movement ripples the surface that the effect disappears.

3. Classic Rectangle and Lap Pools

swimming pool

If your home is deluxe and traditional, then a classic rectangle is one of the best options as the pool’s straight lines will not overpower the property’s ageless elegance; in fact, those clean edges will reinforce the architecture’s magnificence, creating an even greater aura of elegance.

But don’t let your fantasy stop there. In fact, many designers choose to use this shape for non-traditional homes because it never goes out of style and will always coordinate perfectly with its surroundings. Rectangular pools can be adapted to a variety of locations, including modern, urban, and bucolic. When joined with an infinity edge or a perimeter overflow, this type of inground pool shape takes on even more character and allows the pool to truly become one with the setting.

Except to gracefully enhancing a home’s property, a rectangular pool can also be put to work. Many people enjoy using the pool for exercise and swimming laps. A lap pool is an excellent option for those who want more out of their pool than a place to dip their toes or float away the day. Built to accommodate a swimmer’s strokes and turns, a lap pool can be whatever length and width the user deems necessary. But don’t think that your pool must be utilitarian in looks—use your professional pool designer’s flair for the visual and keep the aesthetic around the pool in line with the rest of the property so the pool can also be the home’s showpiece.

By simply remodeling the design to create an “L” shape, the pool can be the best of both worlds: for those swimming laps, there is the straightaway, and for those wishing to play water volleyball or basketball, there is a separate wading area for fun and games.

4.Kidney-Shaped Pools

swimming pool

If you peeked over the fence of every home that has a swimming pool, you will notice that quite a few sport a kidney-shaped pool. The reason is simple: kidney-shaped pools’ soft, retro look is appropriate for a variety of architectural styles.

Many pool designers use this pool shape as a foundation from which to build more elaborate structures. No matter the building material, they will add accents like natural coping, glass tile, colorful plaster, or a textured finish to customize the project for your property.

Via swimming pools

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What are the best practical methods to heat my home?

Knowing how to suitably and effectively heat your home can make all the difference, particularly in terms of your energy bills, so we thought we’d give you a helping hand.
Join us as we talk about all things heating and discover what your best solution is!

1. What is the optimal heating system?
This is a subjective issue that actually depends on where you live and what kind of house you own, but popular systems include heat pumps, central heating (water radiators) or geothermal energy.
Heat pumps are perfect for areas that enjoy hot temperatures in summer as they can also cool your home, whereas central heating will just be switched off. Geothermal solutions are generally reserved for homes in areas that are hard to access with standard utilities.

2. Which radiators should I choose?
This really comes down to a style choice as all radiators are designed to emit maximum heat.
Tall, lean versions, such as the one shown here, are a modern trend that many people are enjoying. In period houses, traditional cast iron versions with intricate detailing are still a better choice.
Just make sure you don’t block them in or cover them as that will stop the heat from circulating.

3. Heat pump or boiler?
In terms of installation and material costs, boilers are less money in the short term, but will use more energy over their lifetime than a heat pump.
You need to weigh up the cost of overhauling your system; ease of payment and even aesthetic concerns before you make a decision as sometimes the cheaper option isn’t the best!

4. Are stoves and fires a good idea?
On their own, woodburners and fires are rarely enough to heat an entire home but they make fantastic supplementary heat sources for when your heating system needs a little boost.
Remember that stoves and fires also look fab! The only thing to be wary of is buying firewood, as that will add significant costs to your bills.

5. What should I consider when installing a new system?
Your heating system should be perfectly designed to keep heat in the winter and be cool in summer so, if you’re considering a brand new build, you should keep this in mind when selecting your insulation options.
The more you can prevent heat escaping, the better. From there, you can simply opt for the lowest ongoing cost system.

Via smarter house

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How Often Do You Need Plumbing Maintenance?

Although the pipes and drains of a plumbing system are designed for resistance, they still need tactical care to keep them from aging too rapidly and needing numerous repairs and replacements.
Why should you plan annual maintenance?
Plumbing maintenance includes more than checking to realize if your pipes have leaks or are suffering from corrosion. Maintenance also comprises the major appliances you use on a daily basis, which can undergo serious stress during a year. For instance, your water heater is part of ordinal plumbing maintenance, and water heaters must have yearly inspections to make sure they operate efficiently and correctly. You’ll need a new water heater long before you need new pipes, and maintenance technicians will be able to recognize when it’s time to retire your current water heater.
Another reason for having plumbing maintenance done annually is that the aftermath of failures in the water line or the sewer line can be huge. These are problems you want to avoid if at all possible, since they can cause damage to your home and the repair work is often extensive.
Tactical maintenance will catch minor problems with either the water line or the sewer line on your property before they become large problems.
What will our team check?
Our team will check your water heater, faucets, supply line, shut-off valves, toilets, drains, and appliances such as sump pumps. They will rummage for corrosion, leaks and occlusion at every point.
At the end of a maintenance visit, our team should provide you advice that will help you continue to keep your home secure from water and sewer damage.

Via homedepot

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air conditioning

Air conditioning

Air conditioning is the process of removing heat from a confined space, cooling the air, and removing humidity.

This process can be used in domestic and commercial environments and is used to achieve a comfortable interior environment for humans. However, air conditioning is also used to cool/dehumidify rooms filled with heat-producing electronic devices, such as computer servers, power amplifiers, and even to display and store artwork.

Air conditioners often use a fan to distribute the conditioned air to an occupied space such as a building or a car to improve thermal comfort and indoor air quality. Electric refrigerant based AC units range from small units that can cool a small bedroom, which can be carried by a single adult, to massive units installed on the roof of office towers that can cool an entire building. The cooling is typically achieved through a refrigeration cycle, but sometimes evaporation or free cooling is used. Air conditioning systems can also be made based on desiccants (chemicals which remove moisture from the air) and subterranean pipes that can distribute the heated refrigerant to the ground for cooling.

In the most general sense, air conditioning can refer to any form of technology that modifies the condition of air (heating, cooling, dehumidification, cleaning, ventilation, or air movement). In common usage, though, “air conditioning” refers to systems which cool air. In construction, a complete system of heating, ventilation, and air conditioning is referred to as heating, ventilation, and air conditioning.

For more information, please read the full description of our Air Conditioning service. 


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pafos 2017

Hani of Ibrahim – Pafos 2017 Development

Z&X Mechanical Installations Ltd is proudly present and participating in the development of Pafos 2017 Open workshop – Hani of Ibrahim. 


Hani of Ibrahim, the meeting place for merchants and artisans, sets the tone for this project, which is inspired by the fundamental value of hospitality.

With this project, the development of Pafos 2017 promotes a more active involvement for residents and city visitors to the Capital of Culture project, as the studios, galleries and, above all, the artists workshops, located around the historic area of Chania, in the central region and across Pafos, open their doors to the public.

In this regard, residents and guests of the city will have the opportunity to meet artists, interact with them, take part in creative workshops and come in a more fruitful contact with the mystery of artistic creation.

Via Cyprus Highlights

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