Long-term HVAC reliability for commuter trains | Lumikko Service Solutions × Pääkaupunkiseudun Junakalusto Oy
In 2025, Lumikko Huoltopalvelut Oy began a comprehensive long-term HVAC overhaul program with Pääkaupunkiseudun Junakalusto Oy to ensure reliable climate system performance for commuter trains for next 15 years.
The objective was clear: to ensure dependable performance, lower lifecycle costs, uninterrupted train operations and long-term fleet reliability.
Customer objective: predictable lifecycle and operational reliability
For the customer, Pääkaupunkiseudun Junakalusto Oy, HVAC refurbishment is a preventive lifecycle decision.
Regularly scheduled overhauls reduce operational risks, eliminate unexpected failures, and support uninterrupted service.
“We can recommend Lumikko as a reliable maintenance partner.”, describes Ossi Piiroinen, Fleet Engineer at Pääkaupunkiseudun Junakalusto Oy.
A service model built around responsibility
Lumikko’s service model is based on full responsibility throughout the refurbishment process.
HVAC units are collected directly from the depot, refurbished at Lumikko’s facilities, fully tested, and returned ready for operation.
This approach simplifies logistics, shortens lead times, and clearly defines responsibility.
Comprehensive HVAC overhaul
The overhaul process includes:
- end-to-end unit collection and logistics
- thorough cleaning, testing, and refrigerant handling
- precision component replacements and refrigeration circuit work
- surface repairs and corrosion protection
- final testing and delivery
The goal is not temporary repair, but restored, predictable operation.
Quality measured by what doesn’t happen
“The units have performed as expected. No warranty issues, and the overall quality has been high.”
For Lumikko, success means no need to revisit the work.
Designed for long-term partnerships
Lumikko continuously develops its processes and facilities to support repeatable, production-level overhauls — ensuring consistent quality for long-term fleet maintenance programs.
More on the topic:
- Lumikko Huoltopalvelut partnered with Junakalusto
- Lumikko Huoltopalvelut at a new address starting June 1, 2025: Sinikellonkuja 5
- SJ Bistro Car Modernization | Lumikko’s Refrigeration Units and Maintenance Services
Looking for a reliable HVAC overhaul partner?
If you’re seeking a reliable partner for long-term HVAC lifecycle support, contact us to explore how we can help safeguard your rail fleet’s performance.
Antti Myllynen
Sales Manager, Aftersales
+358407594864
spareparts@lumikko.fi