Since 1883, McQuillan Brothers Plumbing, Heating and AC has remained true to its mission of providing HVAC and plumbing services at fair prices in St. Paul, MN. Today, we continue to raise the bar: providing the industry's best plumbing, heating, AC and boiler service without upsells or gimmicks. Serving Hennepin County, Washington County & Ramsey County Families Without you, we couldn't do what we love every day—so we always put customers first.