As the UK braces for hotter summers, with heatwaves becoming more frequent due to climate change, a functioning air conditioner is essential. According to the UK Climate Projections (UKCP18), summer temperatures are expected to rise, with hot spells in the southeast becoming up to 50% more common by mid-century. When your air conditioner stops working, it can make coping with these temperatures unbearable. Here, MGI Ltd explores the top five reasons why your AC might have stopped working and how we can help you stay cool.
1. Mechanical Issues
Air conditioners rely on components like the fan motor, evaporator coil, compressor, condenser coil, and expansion device. A failure in any of these can stop your unit. For example, a damaged compressor halts refrigerant circulation, while a faulty fan motor prevents heat dissipation. Regular maintenance is crucial to avoid these issues.
Tip: Schedule annual checkups with MGI Ltd’s trained HVAC technicians to catch mechanical problems early. Our inspections ensure your system runs smoothly during peak summer months.
2. Clogged Air Filter
A clogged air filter is a common cause of AC failure. Dirty filters restrict airflow, forcing the unit to work harder and potentially causing the evaporator coil to freeze. This reduces efficiency and can lead to system failure if ignored.
Tip: Replace your air filter monthly, especially during heavy use or if you have pets. MGI Ltd offers maintenance plans that include filter replacements to keep your system efficient.
3. Low Refrigerant
Refrigerant absorbs heat from your home and releases it outside. Low levels, often due to leaks, prevent effective cooling. With the phase-out of R-22 (Freon) under environmental regulations, addressing leaks promptly is essential to avoid costly repairs.
Tip: If your AC isn’t cooling properly, contact MGI Ltd. Our technicians use advanced tools to detect and fix leaks, ensuring your system is charged with the correct refrigerant, compliant with Energy Performance of Buildings Regulations.
4. Blocked Outdoor Unit
The outdoor condenser unit needs clear airflow to function. Shrubs, leaves, or debris can obstruct airflow, causing the unit to overwork and potentially fail. This is especially relevant in the UK, where garden landscaping is common.
Tip: Keep a 2-3 foot clearance around your outdoor unit and clean it periodically with a garden hose (avoid pressure washers). MGI Ltd can perform professional cleaning and maintenance for optimal performance.
5. Small Unit or Thermostat Issues
An undersized AC unit or a poorly calibrated thermostat can prevent effective cooling. Incorrect installation or outdated dial thermostats are common issues. With rising UK summer temperatures, ensuring your system is correctly sized and controlled is vital.
Tip: Upgrade to a programmable thermostat for precise control and energy savings. MGI Ltd offers expert installation and can assess whether your unit is appropriately sized.
Why Regular Inspections Matter
Under the Energy Performance of Buildings Regulations, air conditioning systems with an output over 12kW must be inspected every five years by an accredited energy assessor. These inspections improve efficiency, reduce costs, and ensure compliance with environmental standards, such as the HFC phase-down. MGI Ltd provides accredited inspection services to keep your system compliant and efficient.
Prepare for the Next Heatwave
With the next UK heatwave likely in July 2025, based on historical patterns, now is the time to ensure your air conditioner is ready. MGI Ltd’s expert technicians can diagnose and fix issues, from mechanical failures to refrigerant leaks, ensuring your home stays cool. Don’t wait until the heat hits, contact us today!