SUB ZERO Kälte Klima GmbH Kältetechnik Klimatechnik Köln Bonn Leverkusen

Excellent service! The consultation was superb, and everything was explained clearly before any decisions were made. I felt well taken care of and received expert advice. The installation also went smoothly, and great care was taken to ensure everything was neat and working perfectly. Highly recommended!

Top service from start to finish! Highly competent and friendly advice, clean and professional installation, and absolute reliability with appointments. The air conditioner works perfectly, and everything was explained clearly. You can immediately tell that true professionals are at work here. A definite recommendation!

The quote and order were processed quickly. Installation was then quite fast, although there were some minor communication issues. Regarding cosmetic flaws, such as cable channels that don't quite fit, the argument is that they are technically irrelevant. That's a shame. Unfortunately, the regular maintenance costs are quite high.

Since we needed air conditioning for our vacation home, I called SUB Zero and immediately got a consultation appointment. The consultation was excellent. I assume the owner personally advised us and explained the differences. That's a big plus. We were able to order a mid-range air conditioner which should be delivered in early 2026! Thank you so much for the friendly and very prompt service! I would gladly use your services again.

We had a very positive experience with SUB ZERO Kälte Klima GmbH. The consultation was competent and easy to understand, the planning well-thought-out, and the execution absolutely professional. The team worked reliably, cleanly, and on schedule. Their high level of expertise, quick availability, and transparent communication throughout the entire project are particularly noteworthy. The installed refrigeration and air conditioning system functions perfectly and meets our expectations precisely.