Priority Plumbing & Heating services Littleton, Englewood, Denver, Lone Tree, Aurora and surrounding areas. Priority Plumbing & Heating of Littleton is a Master Plumbing company that service excavations in littleton, drain cleaning, clear sewer main, water heater install, water heater repair, clear drain clog & blockage, water main install or repair, sewer main install or replace, drain line breakage, jetting main and secondary lines, water heater replacement and more. We also specialize in HVAC needs so when you Air Conditioner breaks we can replace it. If Your AC runs but not cool comes out, we can help repair your AC. When winter time rolls around and your furnace kicks out we do furnace repair littleton CO. Residential & commercial.