We were having a problem getting the baseboard heat to heat the downstairs of our home. The heat source is a gas boiler that heats water and circulates it via copper pipes around our home, up and down stairs. Upstairs was nice and toasty, downstairs was frigid. I work from home, so heat during the day downstairs in my office was very important. I heard from a neighbor that my home's original occupant used to use Davidson heating and air for the servicing of the boiler, got the number for them and called them to service the heating. David was the tech who came out for the service call. He adjusted the boiler heat. the temperature was set high enough to boil the water and create steam, which would put air in the lines (pipes) and lower the effectiveness of the boiler heating. David and the tech who came out with him also checked under the house in the crawl space to make sure that the pipes weren't leaking and also to help diagnose the issue downstairs. They found out that the pump was going out, so the water wasn't circulating the downstairs, and the only reason it worked upstairs was because the water had been boiling, and hot air rises. David ordered a pump and came out the next day to do the install. It was quick, the guys were very clean and my home was finally warm!! The pipes make much less noise now, also, when circulating, probably because there's less air in the lines.