Now that we have a new air conditioner and furnace, I can agree with the assessment that Copperline has been the best vendor we have worked with while updating our nearly 100 year old home. Brian and his team could not have been easier to work with. They were easy to communicate with, schedule, and coordinate the project. It may also be a little thing, but they were ON TIME! How many vendors can you say show up on time and ready when they say they will be there?