What to anticipate upon hiring an AC Maintenance Company?

 Air conditioning units are inevitable devices in countries of hot weather, especially in Arab countries like Dubai, UAE, Sharjah etc. When the HVAC units are working on a full blast, they will come across numerous maintenance issues like repairing or replacing the parts or the unit as a whole. 

Whatever be the reason, as long as you have an AC, it’s important to have an AC maintenance company at your disposal. It doesn’t mean you call the first number you receive. You must conduct a thorough inspection before hiring an HVAC maintenance company in Dubai. Here are some of the things to keep in mind:

Is the company licensed and authorized to do AC maintenance?

You may find many unauthorized AC technicians around, however before you hire an AC maintenance company make sure they are properly trained, licensed and authorized to do AC repairs and maintenance works. 

Look out for their expertise in the industry

One must always look at the number of years an AC maintenance company has been in business. The more the number of years, the better expertise they have in the field. This knowledge will also create a comfortable environment between you and the AC technicians without any possible doubts or worries.

Get opinions from their previous customers

Directly or indirectly, that is via Google reviews or social media comments, try to get maximum opinions about the AC maintenance company you are about to hire. Reviews often give great levels of insight into their services.

Get an understanding of how their warranties and guarantees work

Every reputed company has definite policies on their service warranty and guarantee, as well as, on refund policies. Make sure that you understand these policies well and clear and be satisfied with them before hiring an AC maintenance company. 

You don’t really have to be an expert in the HVAC unit or its service company to know which one to hire. Make sure that you see these above-mentioned aspects of an HVAC maintenance company in UAE and you can definitely find one that is best suited for your requirements. 

4 Signs That Your AC Unit Needs Repair & Maintenance

 On a typical day of work, busy over the deadlines, have you stopped thinking why the cabins are hotter than the usual temperature despite the AC unit working hard? If yes, it is the sign for repair and maintenance works. When the need comes, it’s better that you don’t postpone the work until it’s damaged, but contact the best HVAC services in Dubai and the professional technicians will take care of the rest. Look out for these warning signs and understand your unit:

• Blows hot air not cold: Even after you have the maximum coldest settings on the unit and the vent still blows out hot air, there are some internal issues. The problem might be regarding the thermostat or refrigerant pressure or evaporator coil, which only an expert can identify.
• Unusual smell & strange noises: A perfectly working AC unit is near-silent and odourless as you have noticed right after its purchase. Once the unit starts making noises or unpleasant smell, it may be some kind of issue of duct leaks, a dirty evaporator coil, a clogged filter, or a broken blower fan that needs to be checked. 
• A Himalayan hike in electricity bills: Yes, it is totally true that your electricity bills fluctuate with the use of electricity depending on each month's need. But if it skyrockets, your AC unit may be the one to blame. So, rather than waiting another month for the second massive energy bill, contact a professional and have it serviced.
• A leak from the AC unit: A small amount of water dripping on the outside of your unit is quite normal. However, if you start noticing small puddles of water or moisture around your HVAC system, it’s important to contact an AC technician for an inspection. It could be due to a blockage or a refrigerant leak, which is potentially dangerous. 

If you start noticing any of these four warning signs, think no more, take up your phone and dial the number of the best HVAC maintenance company in Dubai. They can easily identify the issues and give appropriate solutions for all problems. 

5 Indications That Your AC Services Need Maintenance

 With the scorching summer coming up with hot weather, you are always on the safer side with your air conditioning unit. Yes, the heat stays outside the door of your home or commercial building. But, just like how your health requires constant care and occasional checkup at the doctor’s office, your air conditioning unit also does. You must schedule repair and maintenance sessions for your HVAC services from time to time, especially at times when your AC unit shows these indications:

• Airflow is not cold enough:  Whenever you notice that your AC unit is full-time working, but somehow the air is still not cold, it needs to be inspected by a technician. It can be due to many reasons, such as clogged filters or blocked ductwork or any other.
• Too much moisture around the unit: Excessive moisture around your window and AC unit calls for a serious issue of AC repair. These leakages can be hazardous like the leaking liquid could be a toxic refrigerant that can be harmful to your family’s health or mild when it is water leakage. 
• Strange noises from the AC unit: Once you start hearing strange noises like squealing, grating, grinding etc. arrange for AC maintenance immediately. A certified professional can tell the cause of the sound which can even be as mild as a single belt dislocation or as severe as engine damage. 
• Emission of foul odours: In proper working condition, an AC unit is never meant to emit any kind of odour. If you start to smell a foul odour, especially smokey, assume that something is burnt inside. Immediately switch off the AC unit and call for maintenance. 
• High electricity bills for cooling: It is right that AC consumes a larger part of the electricity bill in your home. But if the bills were fine last summer, but hikes high this year, it is better that you call for help to put your AC unit under the microscope. 

Ideal air conditioning systems that work all through the day and night for long-lasting years is sadly a myth. Like any other machines, an AC unit also requires occasional repair and maintenance to stop the problem from escalating further hazardous, which can be rectified by the chiller maintenance companies in Dubai or any other part of the world. 

How to avoid HVAC Compressor failure?

 HVAC compressors can be literally said as the heart of any air conditioning and refrigeration system. Thus, if it fails there is no other option than to replace the item with a new one. Yet, purchasing a new compressor is expensive, thus it is important that you know the causes of compressor failure and how to avoid them conveniently. The best HVAC compressor services in Dubai often give proper guidelines about the regular maintenance of the compressor. 

Major reasons behind a compressor failure are mentioned below: 

• Problems with the refrigerant
• Electrical or power malfunctions
• Partially or fully blocked tubes/suction lines
• A faulty condenser can affect the performance of the compressor

Here are some of the ways through which one can avoid a compressor failure: 

Regular preventive maintenance: Routine preventive maintenance is a must when it comes to industrial appliances to prevent failures. Most of the problems with HVAC compressor units can be prevented upon prior notice. A well-maintained compressor usually lasts for long years, yielding high performance and efficiency. 

Avoid incorrect charging of compressors: Many compressor failures are caused due to incorrect refrigerant charging. To prevent such a situation, it is important that the compressor is installed by a well-reputed compressor contractor who knows the way around a compressor and can guide you through proper charging methods. 

Condenser unit must be cleaned regularly: Poorly maintained outdoor condenser units can cause compressor failure. How? Because they can accumulate dirt over time and cause malfunctions. Try to maintain the compressor in excellent condition for a longer lifespan. 

Proper piping and mounting: All industrial and commercial HVAC systems have elaborate piping and airflow systems. They determine the workflow of every compressor. If the piping and airflow system is troublesome, the compressor will have its repercussions, such as issues with pressure and the overall operation. Thus, keep regular inspections on the piping and mounting. 

Oil and lubrication: Lubrication is a critical task when it comes to compressor maintenance which will ensure the proper functioning of the unit. The oil also acts as a lubricant for the insulator and a sealant of the compressor, apart from the parts in motion. Changing the compressor oil is a must on your checklist of routine preventive maintenance.

If you are in doubt about any of these tips or are in need of further detailed guidance, you can always contact any compressor services in UAE. Ask and do regular maintenance to avoid system failure which will cost you many bucks unnecessarily. 

Oil-Injected Compressors v/s Oil-Free Compressors

A new buyer on the road in need of an air compressor will be confused with the labels of ‘Oil-Free” and “Oil-Injected” attached to the respective ones within the shop. A professional or an expert knows the two and buys the right one for his/her company, whereas a non-expert in the field might stand wondering, utterly confused about the right choice. This article puts before you the actual difference between them and then you know which is accurate for your business. Once you know, contact the best compressor services in Dubai, they will install the right one that suits your need. 

What is an Oil-Injected or Lubricated Air Compressor?

Oil-Injected air compressors use a liquid component, most commonly oil for its lubricating and sealing properties, injected into its operation chamber for the smooth functioning of its elements. Oil-Injected compressors are majorly utilized for:

Cooling and lubricating the compressor elements’ and moving parts

Cooling the compressed air within the chamber

Minimizing leaks during discharge

Operating within temperature limits, removing excess heat during the processes

The lubricant is removed from the compressed air using different air filtrations like centrifugal separators or coalescing filters. The oil is thoroughly filtered and cooled before re-injecting them to the operational chamber. These lubricated air compressors require routine maintenance and change of oil, or any synthetic lubricant, from time to time. 

What is an Oil-Free Air Compressor?

Oil-Free air compressors are operated with external gearboxes, thus the elements within the compressing chamber do not come together to create any friction. As a result of which, the compressing chamber is completely lubricant-free, whereas the external gearbox requires oil or other lubricants against corrosion, reduces friction and ensures efficient, reliable operation of the elements. To avoid the scenarios of overheating and possible leakages, oil-free compressors often have a two-step process of compression. In order to remove excess heat, there is an intercooler installed in between the two stages and an aftercooler at the end of the process. 

They have two advantages compared to oil-injected compressors:

They have low maintenance costs, as there is minimal repair work in the compressor chamber, only the gearbox requires regular service.

They offer clean compressed air, free of any contaminants or foreign particles within.

In conclusion, it can be said that the industries with heavy workload using air compressors can go with the lubricated/oil-injected air compressors and the industries like pharmaceutical, food processing or electronics, that requires high-quality pure air can pick oil-free compressors for an excellent final product free of contaminants. Instead of going for a new compressor, one can always opt for highly serviced used compressors in UAE, for lower costs.  

Tips for Commercial Refrigeration Maintenance

 Walk-in freezers, coolers, and other types of commercial refrigeration units are an integral part of any business industry. Even the slightest of errors can lead to the breakdown of these refrigeration systems, thus they need to be regularly checked for optimal performance. Poor maintenance of commercial refrigeration can cost you many things like you could lose the unit as a whole, lose customer base due to inhospitable environment, energy costs including extra electricity bills, repairing and replacements of the parts etc. Thus, monthly and quarterly maintenance had to be done in different parts of commercial refrigeration. One can also hire the best HVAC services in Sharjah to do the maintenance checks from time to time. 

Check refrigerant levels for leak or low or wrong charge

Check lines of condensation for any clogging, and allow it to drain freely

Clean condenser coils, if they are dirty or dusty, it is difficult to maintain temperature, which causes overheating and component failure.

Maintain evaporator coil, responsible for absorbing heat. Blocked airflow inside the unit can cause the coil to freeze, leading to water leaks and temperature rise. 

Clean fan blades, poor lubrication or blockages in the vents can lead to fans stopping to spin. 

Inspect fan motor, dirt inside the cabinet can cause serious malfunctions of fan motors. 

Check for loose electrical components, a surge of electrical current creates excessive heat and a total electrical control failure.

Check temperature and defrost settings, faulty relays, controls, or sensors can cause defrost issues. 

Check filters on ice makers, rinse them with warm water until they're clear of debris.

Check for holes, cracks in gaskets, which can prevent the door from sealing shut, causing cool air to exit the fridge’s interior. 

Lubricate door hinges

Keep Your Refrigeration Unit Dry, any spills have to be cleaned up immediately. 

Keep the above mentioned commercial refrigeration maintenance checklist in mind to maintain your equipment in top form. The best maintenance experts of chiller companies in Sharjah providing excellent refrigeration services suggest that maintenance is to be done periodically for optimum efficiency and risk-free regulation of the entire commercial space. 

 

How to Enhance a Compressor's Energy Efficiency?

An air compressor’s efficiency often comes with maximum utilization of the energy resources and compressed air.

Due to the non-usage or leakage of the compressed air, energy gets wasted in the whole process. Thus, it is rather necessary to enhance your compressor’s energy efficiency.

Here are some of the ways to ensure efficiency:

• Examine the whole usage: You must have a detailed understanding of the whole compressed air system, including the compressors, the air supply lines, end uses etc. This gives a comprehensive idea of how your machine works and what are the possible issues causing troubles like:

1. Leakage
2. Pressure Drops
3. Air Storage
4. Over Pressurization
5. Condensation Drains
6. Poor Management of the compressor system

• Verify CFM Output: Several issues on the piston rings and premature modulation of different compressors can result in lower amount CFM output much lesser than what it is supposed to produce. You could do an examination of the inaccuracy of the adjustment valves and change them if they are the major cause of the issues. 

• Reduce Pressure Drops: During the service life of an air compressor, the pressure drops must not exceed 15 psi. When it becomes more than 10 per cent you ought to check the whole distribution system and find the cause of this excessive pressure drops. And you could:

1. Install an air distribution piping that is big enough to reduce pressure drops
2. Install a pressure regulator
3. Install inlet air filters that remove all the dirt that restrict the airflow

• Check leakages: You should always conduct regular inspections on the leakages while and off production times to ensure the overall leak rate. An ultrasonic leak detector and professional auditor are excellent to find and fix the leakages.

• Check V-belts: Frequently ensure that the V belts are tight enough because loose belts can reduce the efficiency of the compressor.

A regular inspection of all these things is tremendously important in the energy-saving and efficiency of an air compressor reducing energy wastage. The best compressor overhauling companies in Sharjah and other parts of the world provide great services in checking your compressor and repairing it in a way that gives maximum output without any possible wastage.