Why Choose Keith Thomas
• 20 years of experience as a Senior Apple Support Specialist at Apple Computer UK HQ.
• Former Apple Computer UK Mac Support Specialist and Apple Authorised Service Provider background.
• Established and Independent since 2010 for on‑site Apple Support Service – no call centres, no outsourcing, no hardware repairs. Over 25,000+ Apple problems resolved. Unique on-site Apple Support Service. backed up with Independent Apple Telephone Support Assistance.
• Trusted by home users, small businesses, and professionals across London and the South East UK.• Clear, honest, software‑only support. No Hardware Repairs. Expert Apple Consultancy Service.
On‑site Apple Mac Support in London and the South East UK
What this page covers
This guide explains the real reasons a Mac overheats, the steps you can try yourself, and when it’s time to get professional on‑site help. It applies to:
• MacBook Air
• MacBook Pro
• iMac
• Mac mini
• Mac Studio
If your Mac gets hot, the fans run loudly, or the system slows down due to heat, this page is for you.
The most common reasons a Mac overheats
These are the issues that Keith Thomas identifies most often during on‑site visits:
• Apps using excessive CPU
• Browser tabs consuming too much memory
• Poor ventilation or blocked airflow
• Spotlight indexing
• iCloud syncing delays
• macOS update processes running in the background
• Damaged system files
• Failing internal fans (older Intel Macs)
Quick checks you can do yourself
These steps solve around 60% of overheating issues.
Check 1 – Restart the Mac
A restart clears stuck processes and resets thermal management.
Check 2 – Close unused apps
Quit apps you’re not using, especially Chrome, Zoom, Teams and Photoshop.
Check 3 – Check Activity Monitor
Go to Applications → Utilities → Activity Monitor and look for apps using high CPU.
Check 4 – Ensure good ventilation
Make sure the Mac is on a hard surface, not a bed or sofa.
If your Mac overheats when using apps
This usually means:
• The app is using too much CPU
• The app is outdated
• The app is damaged
Try:
• Updating the app
• Restarting the Mac
• Checking Activity Monitor
If your Mac overheats after a macOS update
This usually means:
• Spotlight is indexing
• iCloud is syncing files
• Background processes are rebuilding
Try:
• Leaving the Mac plugged in for a few hours
• Restarting after indexing completes
• Checking Activity Monitor
If your Mac gets hot when charging
This usually means:
• High CPU usage while charging
• A faulty charger or cable
• Battery calibration issues
Try:
• Using an official Apple charger
• Restarting the Mac
• Closing heavy apps while charging
When DIY stops working
You should get on‑site help if:
• The Mac overheats constantly
• Apps freeze or crash due to heat
• The fans run loudly all the time
• The Mac shuts down unexpectedly
• Disk Utility shows errors
• macOS reinstall does not fix the issue
These issues usually require:
• Startup volume repair
• macOS recovery
• Data‑safe macOS reinstall
• User account repair
• Thermal and hardware diagnostics
On‑Site Apple Mac Support – London & South East UK
If your Mac is overheating, Keith Thomas provides an often same‑day on‑site support service across:
• Central London
• West, North, South and East London
• Surrey
• Berkshire
• Hampshire
• Wiltshire
Keith Thomas is a Mac Support Specialist in:
• Mac overheating issues
• macOS optimisation
• Data‑safe macOS recovery
• macOS reinstall and repair
• iCloud and Apple Account issues
• New Mac setup and migration
• Thermal and hardware diagnostics
Book on‑site help in London and the South East UK
If your Mac is overheating, Keith Thomas can visit your home or office and get you working again.
Keith Thomas – Apple Mac Support Specialist
Established 2010 – Open 09:30–20:30, 7 Days
Contact Keith Thomas by Telephone: 07800 940756 or by Text to: 07800 940756, or simply complete an online website contact form 24/7