Energy Efficiency Made Easy: Condenser And Evaporator Coil Maintenance, Repair, Replacement And Protection.

Clogged coil

If you’re a regular ECEX customer, there’s a strong chance that you’ve recently received one of our mailshots on coil repair, replacement, maintenance and protection. The key message: Failure of essential heat exchanger equipment could potentially bring your business to a halt.

From the response it generated, there is no doubt that the issues related to coils are generally the same: clogging, corrosion or leakage. However, it’s easier to understand the issues by fully understanding the differing functions of condenser and evaporator coils.

Condenser Coils

The purpose of a condenser coil is to dissipate any heat absorbed from the refrigerant. Over time, airborne particulates such as leaves, pollen and dirt begin to layer up on the fins and tubes, acting as a highly effective, although not particularly welcome insulator.

As a consequence of this build-up of airborne debris, the condensing temperature begins to increase, causing the compressor to work harder for longer in order to achieve the requisite cooling effect.

In short, this makes the condenser coil more expensive to run due to increased energy output, along with a greater strain upon the unit, leading to an increased risk of breakdown.

Evaporator Coils

Unlike the condenser coil, the purpose of an evaporator coil is to absorb heat from the surrounding environment rather than the refrigerant. Like a condenser coil, an evaporator coil can also become easily clogged with airborne debris; however the impact of this debris is slightly different. By restricting the airflow through the unit, the pressure drop means that the cooling effect of the air is also reduced and so the unit has to run for longer in order to achieve its required level of cooling.

Reduced airflow not only means that the unit has to remain operational for longer than is necessary, but it also means that it has to work harder in order to achieve its requisite airflow. Both of these contributing factors place the unit under greater risk of breakdown and more importantly, downtime for the end client or tenant.

Traditionally within the facilities and building management industry, it is accepted that condenser and evaporator coils are left unfiltered. The inevitable build-up of seasonal debris is often dealt with as an inherent problem, without any means of protection.The good news is that there are not only several steps that you can take in order to reduce the problems caused by clogging, but there is also an method of reducing clogging all together. ECEX offer a range of coil services including repair, replacement, maintenance and protection. 

Not only can we bring your equipment up to its most efficient through effective maintenance and cleaning, but we can repair localised damage or completely replace if required. Finally, we introduced a product to the UK market called an Air Intake Screen. An Air Intake Screen from ECEX is a long lasting, weather resistant filter mesh product which fixes to external intakes on AHUs, chillers and condensers. This protects coils before any airborne debris can clog the fins and reduce the efficiency of your evaporator or condenser coils.

By moving the airborne debris to a position in which it can be easily maintained/removed (using a soft brush, hose or vacuum cleaner), an ECEX Air Intake Screen is an incredibly simple, retro-fit protective option for your equipment on site. 

It really is that easy. For information, advice or a quotation, contact ECEX on or 01635 244 100.


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