B3 installed a new high efficiency furnace and A/C for me. They showed up on time, worked hard and finished quickly. The work looked very neat and they left the place very tidy. The furnace wasn't working properly on the second stage during the recent very cold weather, which was disappointing because it was brand new. But B3 kept coming back until the problem was fully resolved, at no extra charge, even though they were extremely busy during that cold spell. Turns out there was a manufacturing defect in the furnace requiring a part to be replaced. I sure hope they get a refund from the manufacturer for their time trying to determine the problem. I was extremely satisfied with B3's service and would highly recommend them to anyone who needs installation or maintenance of their furnace.