Noisy AC Unit Repairs in London

Providing diagnostics and repairs for noisy air conditioning units in London

  • Covering All of London and the Home Counties
Free Site Survey
Free Quote
  • Guarantee on Parts and Labour
     Accurate diagnosis for long-lasting repairs
  • Discount System
     Working with charities or large-scale sites? Ask about special rates
  • Online Payments
     Streamlined booking, invoicing and repair tracking
  • Energy Efficient Cooling We fine tune your air conditioning system for smoother, more consistent performance
  • Same-Day Bookings Available
     We’re ready to diagnose and repair your AC without delay

What can you do about a noisy air conditioning unit?

If your AC system has become loud, rattling, or disruptive, it could be a sign of a deeper fault. We offer specialist repair services for noisy air conditioning units across London and the Home Counties. Whether it is a whirring fan, vibrating panels, or unusual humming sounds, our engineers diagnose the issue fast and fix it at the source. Quiet, efficient operation is restored quickly with minimal disruption to your space.

Full AC Noise Diagnosis and Repair Service

  • Free site inspection for noisy air conditioning systems

  • Rapid identification of source issues such as fan faults or loose parts

  • Repairs for split systems, ducted units, ceiling cassettes and wall-mounted setups

  • REFCOM certified engineers with years of AC repair experience

  • Full part and labour warranty on all repair work

Get That AC Noise Fixed Fast

Restore peace and performance with expert diagnostics and same-day repairs across London

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What Causes a Noisy Air Conditioning System?

Common causes include loose internal components, clogged filters, worn bearings, and faulty fan motors. In some cases, refrigerant issues or airflow obstructions can lead to whistling or hissing. Our diagnostic process pinpoints the noise source and ensures targeted repairs that improve comfort and efficiency.

Our Diagnostic Process: Pinpointing AC Noise Sources

Diagnosing air conditioning noise accurately involves a step-by-step approach using advanced tools and system knowledge. Our engineers carry out:

  • Sound tracing using decibel meters – Identifying the location and frequency range of unusual sounds

  • Thermal imaging – Spotting overheating motors, faulty compressors, or misfiring components

  • Component isolation testing – Running individual parts such as fan motors, capacitors or compressors to trace the fault

  • Vibration mapping – Using handheld sensors to identify the source of mechanical shaking or loose panels

  • Airflow testing – Measuring duct pressure and blockages that can cause whistling or hissing

This thorough process allows us to distinguish between harmless operational sounds and signs of deeper issues like electrical faults, system imbalances, or wear in mechanical components. Whether the issue stems from a domestic air conditioning unit or a commercial HVAC system, we ensure repairs are accurate and effective.

Understanding the Type of Noise

 

  • Buzzing or humming may indicate electrical faults or loose wiring

  • Clicking or tapping often signals relay switch problems or obstructions

  • Whistling points to airflow restriction or ductwork issues

  • Grinding or screeching typically means motor wear or compressor trouble

  • Banging or clattering suggests loose or broken internal components

Brands and System Types We Repair

Daikin

A global leader in energy-efficient cooling. Daikin systems include split, multi-split, VRV/VRF, and air purification technologies — ideal for residential and large-scale commercial use.

Mitsubishi Electric

UK-produced units known for quiet operation, advanced controls, and reliable performance. Available in split systems and heat pump configurations for efficient year-round comfort.

Panasonic

Durable, smart-enabled systems with a focus on clean air and energy savings. Panasonic units include nanoe™ X air purification and app-based control.

Fujitsu

Compact, quiet, and reliable. Fujitsu offers flexible options for homes and small businesses, with inverter technology and low maintenance needs.

Trane

Robust commercial HVAC solutions built for larger properties. Known for system longevity, high performance, and energy efficiency in demanding environments.

Airedale (UK)

British-made precision cooling systems, ideal for data centres, healthcare, and critical infrastructure. Offers advanced diagnostics and climate control.

Stiebel Eltron

German-built systems combining ventilation and cooling with a strong emphasis on sustainability. Suitable for residential and commercial installations.

Plus many more

We can install and repair nearly every make and model of air conditioning units in addition to those mentioned such as J & E Hall, Andrews Sykes, Grayson Thermal Systems.

Advanced Diagnostics for Lasting Results

We use professional tools such as decibel meters, vibration sensors and thermal imaging to accurately identify noise sources. This ensures that we repair the root issue rather than masking the symptoms. From older fixed air conditioning systems to modern smart AC units, we apply the correct repair method for each setup.

Preventing Noise Issues with Routine Maintenance

To keep your AC system running quietly, we recommend:

  • Cleaning or replacing filters every few months

  • Checking for loose fittings, screws or mountings

  • Lubricating moving components to avoid friction and wear

  • Booking seasonal servicing to catch early signs of noise-causing faults

Quiet Comfort Starts Here

Stop putting up with buzzing, rattling or whirring AC units

Book A Repair

Considering Upgrades for Old or Noisy Units

If your unit is over 15 years old, persistent noise may indicate wear that cannot be fully resolved with repairs. Upgrading to a modern system can deliver quieter performance, lower energy use and better overall comfort. Our team can advise on energy-efficient options with improved sound ratings.

External Noise Control Options

  • Sound blankets or barrier fencing can reduce noise from outdoor units

  • Duct insulation and sound attenuators help reduce internal sound travel

  • All upgrades are carried out without affecting airflow or efficiency

How Loud Is Too Loud? Know Your Noise Levels

Indoor AC units typically range from 30 to 55 decibels – similar to a quiet fridge or soft music. Outdoor compressors may run at 60 to 65 decibels – comparable to light street traffic. If your unit exceeds these levels, it may be time to book a repair.

Restore Quiet Performance with Confidence

Our team uses manufacturer-approved parts to repair or replace worn components, recalibrate the system, and restore quiet performance. From homes and flats to office buildings and retail spaces, we help eliminate AC noise at the root.

AC Repairs Without the Disruption

Trusted by offices, clinics, shops and more

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Answers to Common Noisy Air Conditioning Questions

If you have a question of your own, then please ask.

Yes. Some noises are early signs of serious faults like electrical damage or refrigerant leaks, which can worsen if left unrepaired. Our diagnostics help you catch these issues early.

We do. Planned servicing includes filter cleaning, system balancing, fan inspection and tightening of components to prevent future noise problems.

 

We offer same day and next day bookings across London. Contract clients benefit from guaranteed response times.

All air conditioning systems generate some noise, but proper repair brings sound levels down to manufacturer-recommended ranges and eliminates disruptive or abnormal sounds.

Sudden loud noises from your AC unit can indicate issues like a dislodged fan blade, loose panel, electrical fault, or refrigerant leak. A quick inspection can help identify and repair the source before further damage occurs.

Some minor issues like a dirty filter or loose cover can be resolved safely at home. However, noises linked to the fan motor, compressor or internal components should be diagnosed and repaired by a qualified HVAC technician to avoid further complications.

Using a noisy AC system may not be immediately dangerous, but it can lead to more serious faults over time. Sounds like grinding, buzzing or high-pitched whistling can signal faults that may reduce efficiency or damage the unit if ignored.

Repair costs vary depending on the issue. Minor fixes such as securing loose parts or cleaning may cost less, while motor or compressor repairs can be more involved. We provide free site inspections and transparent pricing before any work begins.

Modern inverter air conditioners and ducted systems with insulated ductwork are among the quietest options. Brands like Mitsubishi Electric and Daikin offer models designed for low noise levels. We can advise on upgrades if noise persists in older systems.

To reduce noise from an outdoor unit, consider placing a sound barrier around the system, securing all panels, or upgrading to a quieter model. Regular servicing also prevents vibration and wear that contribute to increased noise.

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One-Off Servicing

A single visit to inspect and service your systems when needed. Ideal for businesses without a contract or with immediate issues. This flexible option covers inspection, fault finding, and minor repairs without ongoing commitment.

HVAC Servicing

Seasonal Maintenance

Targeted support during peak-use times like summer or winter. We tune systems to handle high loads, improving comfort and preventing seasonal malfunctions. Perfect for retail, hospitality, and offices with heavy seasonal demand.

Seasonal HVAC checks

Filter Cleaning & Replacement

Regular cleaning or changing of filters improves air quality and system efficiency. Dirty filters can restrict airflow and increase energy use. Our engineers ensure all filter components are clean and compliant with indoor air quality standards.

Filter Changes

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Planned Preventative Maintenance

People are saying good things about RightAir Solutions

We had a loud rattling noise coming from our office AC unit and it was driving everyone mad. RightAir came out the same day, found the issue straight away and had it sorted within an hour
Joanna Quinn
West London

Areas We Serve Across London

Central London

Mayfair

Marylebone

Fitzrovia

Soho

Holborn

Covent Garden

Bloomsbury

Westminster

Paddington

Edgware Road

West London

Kensington

Chelsea

Notting Hill

Ladbroke Grove

Holland Park

Hammersmith

Shepherd’s Bush

Acton 

Park Royal

Ealing

North West London

St John’s Wood

Swiss Cottage

Finchley Road

West Hampstead

Golders Green

Hendon

Kilburn

Queens Park

Cricklewood

North London

Highgate

Camden

Islington

South West London

Clapham

Wandsworth

Battersea

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