When I sought a technician to install our heat exchanger, Germanus contacted me immediately. Roberson came to give the estimate the next day. I found it reasonable and we scheduled the installation for the next week, then moved it to a day earlier. They worked all day on our large unit; when the remote wouldn't work, he continued to look until he found the flaw in the machine, a loose wire, and was able to fix it. The unit runs smoothly. From contact to installation was five days. I recommend Germanus highly and will use them again.