We live in a condo complex built thirty years ago--when our HVAC died, our neighbors told us that because the construction was old that HVAC companies found replacement "challenging". Jansen gave us a fair bid and even though they had to find a way to fit new equipment in to a very small space-they did a FANTASTIC JOB--The owner even stopped by to check on progress--they were polite, professional and clean--We couldn't be happier.