I made a request for help with a gas leak by my furnace. This issue was doubly problematic because it occurred during a very cold day in the middle of the COVID crisis.
Dave responded incredibly quickly and diagnosed the problem right away. Brendan from Dave's team arrived the next day and fixed the problem. Both of them were warm, kind, incredibly competent, and professional. They also went above and beyond to ensure that Brendan was equipped with proper PPE in light of the COVID-19 crisis, and Brendan was careful to maintain appropriate distancing.
In short - you cannot go wrong with Dave's Ducts.