Sullivan Super Service dealt with the furnace uptake at a rental property of mine and helped determine why one of the rooms at my current property was not receiving heating and cooling. They're very competent and they do give you enough information to make the decision. They provide you with options and the pricing is fair and reasonable. I'd worked with them before, but I noticed a change this time, which is that they are more focused on upselling. They do keep good records, which I really appreciate because they're aware of the history behind any mechanical issues we have, and the technicians are excellent. They clean up after themselves and wear booties in the house. They're communicative and let you know when they're coming. If they're late they make sure you are apprised of the situation, but they don't often run late. They're usually prompt and always very good at what they do. Just be cautious about being upsold services that aren't really necessary.