While furnaces generate heated air, boilers transfer water or steam heat to generate indoor warmth.
The moist heat is then sent through baseboards, radiators, in-floor radiant tubing, or other sealed hydronic devices in your home.
Boilers run quietly and provide a pleasant "air feel." And because they don't use fans or blowers, they don't contribute to blowing dust, dirt, allergens, etc., into the air.
In Princeton Air, we sell and service natural gas boilers .
We recommend the following gas-fired brand(s):
Weil McLain Ultra Series 3-UE

Ultra Series 3-UE delivers peace of mind, unmatched comfort and immediate payback in energy savings. It is designed to operate in low temperature condensing applications.