18/08/2026
After 120 years, the Piccadilly Line is finally getting air conditioning. 🚇❄️
Londoners who have suffered through hot Tube journeys may soon have something to celebrate.
The Piccadilly Line is set to become the first deep-level London Underground line with air-conditioned trains.
Transport for London is introducing 94 new trains as part of a major upgrade costing more than £3 billion.
The new trains will bring more than just cooler journeys.
🚇 Air conditioning
🚪 Wider double doors
♿ Improved step-free access
🔄 Walk-through carriages
📺 Better digital displays
⚡ Around 20% lower energy use
The first new trains are expected to begin entering service from December 2026, with the full fleet expected to be in operation by June 2027.
The timing will be welcome for passengers.
The Piccadilly Line has been carrying Londoners since 1906 and will celebrate its 120th anniversary this year.
For decades, passengers on deep-level Tube lines have had to endure hot and crowded carriages during London's summer heat.
That could finally be changing.
The upgrade is also expected to increase service frequency from 24 to 27 trains per hour once the new fleet replaces the existing trains.
🚇❄️ Would air conditioning make you more likely to choose the Piccadilly Line on a hot summer day?
