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Air Handling Unit Maintenance

Smooth running of your plant

AHU's need cleaning and maintaining to ensure they perform at maximum capacity

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Air Handling Units

What Are My AHU Maintenance Requirements?

Air handling units serve an essential purpose within an HVAC system, with all the circulated air passing through the sensitive fins and coils. Over time airborne pollutants can erode and contaminate these highly sensitive units, reducing their efficiency and leading to expensive repairs if poorly maintained.

As all air from the entire ductwork ventilation system passes through an AHU, these ‘pinch points’ in the system collect all debris and particles and can contaminate the entire ventilation system with harmful pollutants and debris.

Poorly serviced AHUs will function below their optimum efficiency, should they become contaminated this can put excessive pressure on the plant leading to higher energy costs and drastic shortening of the lifespan of the AHU. AHU Maintenance should include a thorough service and deep cleaning of coils to ensure these essential elements are running at 100% efficiency.

Maintenance in three easy steps.


Condition assessment and asset tagging of all AHU's on site, including sampling to CIBSE TM26 if required. Collect all information (belts, filters, model etc) for future maintenance.


For dirty or poorly maintained AHUs deep clean each unit, sanitise and treat any rust spots. Replace with clean filters and new belts if required.


Maintain at regular PPM frequencies in line with SFG20 guidance, monitor condition and replace parts / re clean as required.

Highly Accredited

Commited To Quality

Aether Compliance provides strategic consulting, and expert compliance services to assist our clients in achieving their overall goals in the rapidly changing regulated sector. Our compliance experts help organizations meet regulatory requirements in a variety of industries including facility management, food safety, manufacturing, and more.

See how we are highly accredited

A selection of accreditations that we hold

Optimising Building Compliance

Our Indoor Air Quality Solution Is Different

Many buildings have 100s of air handling units present, ensuring none of the units are missed from the maintenance schedule and any additional maintenance works are highlighted and actioned promptly is an essential element of our service delivery.

Our bespoke asset management tools enable management of any number of units across individual or nationwide contracts.

Our AHU maintenance solution is designed to prolong the life of your plant and reduce contamination of the HVAC System:

  • Condition Assessment
  • Asset mapping
  • Chemical Cleaning (including coils)
  • Belt Changes
  • Filter Replacement
  • Anti-Corrosion Treatment
  • Full detailed digital reporting
  • SFG20 Compliance

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More than a deep clean

Full service can include filtration, belts, sampling

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Bespoke asset reporting

Data on each AHU such as filter sizes and manufacturer details he'd against the asset number

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Full accredited by Building Engineering Services Association (BESA)

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Ensuring not just smooth running of unit but also compliance with industry standards SFG20, CIBSE TM26

A word from our CEO

"AHU's - look after your plant and it will look after you "

"Proper maintenance of AHU's will not just extend its serviceable life, but also reduce energy consumption: dirty coils and filters put excess pressure on your fans to run at proper capacity.

Often overlooked the hygiene of the AHU is also a factor, AHU cleaning removes pathogens that multiply in dark cool spaces and can be transferred via the supply duct into the ambient air in a building. Regular sampling and sanitation should form an important part of your AHU maintenance program." - Titus W. (CEO)