I wish I could get a new heater

My home is equipped with a natural gas gas furnace with a duct system.  It handles the dire weather in the area where I live, however I’m not totally cheerful with it.  The duct system is noisy, introduces allergens into my breathing air, and takes up quite a bit of space.  When the tepid air pours from the vents, it rises straight up to the ceiling. It only falls back down when it cools down, creating uncomfortable temperature stratification.  Because of this, I’m constantly bumping up the temperature control and spending a fortune on my utility bills. The gas furnace also dries out the indoor air, causing all sorts of health troubles and destruction to condo furnishings.  I wish I could tear out the entire gas furnace and duct system and replace it with a boiler and radiant floor heating. Instead of using air to transport heat energy, a boiler uses water. Water heats up quicker and retains heat longer, making it more energy efficient.  The boiler heats up the water and sends it through a series of pipes hidden beneath the floor. The heating unit takes up no residing space, doesn’t detract from aesthetics, and I don’t need to arrange the furniture around it. The heat is spread evenly across the room and remains closer to the floor.  It allows lower temperature control settings without sacrificing comfort. I would undoubtedly prefer to walk barefoot across radiant floors in the winter. Unfortunately splitting out a forced air gas furnace to replace it with a boiler isn’t feasible. I’m just hoping some professional maintenance will improve the performance of my gas gas furnace.