We decided on Allianz based on their excellent reviews on Angie?s list ? and we were not disappointed. During the first visit, the owner, Martin, spent more than an hour with us, explained the different options and helped us choose the best one for us. The installers showed up right on time on both days (it took two days, because we needed electrical work, also), cleaned up after themselves, and were polite and patiently answered our many questions. They had to replace the electrical panel and as a bonus reframed the new one with redwood, to match it to the existing trim in the room. Whenever they had to open the garden gate to get supplies from their truck, they always made sure our dogs did not get out - which we appreciated very much! Martin came by several times to see if he could help and to answer questions. He took care of the permits and set up the inspection after the work was done. We found him and the staff (including the ladies who answer the phones!) very pleasant and easy to deal with and highly recommend this business! Needless to say, we are very happy with the unit and the work and wish we had it installed years ago. About a week after the installation, we received a box of cookies and a thank-you card from Allianz ? very classy! I should add, that we are getting a $1200.00 utility-bill credit, so our final investment was only 2830.00. Money well spent!