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Struggling with heating, cooling, or plumbing issues? MJK Mechanical is your trusted HVAC and plumbing expert, delivering honest service, fair pricing, and top-quality workmanship. As a family-owned and operated contractor, we specialize in AC and furnace repair, heat pump services, ductless mini-splits, indoor air quality solutions, water heater repair, leak detection, drain cleaning, sewer line services, and whole-home repiping. Our NATE-certified technicians ensure efficient solutions for homes and businesses. We proudly serve Chester County, Delaware County, New Castle & Sussex County, DE, and Cecil County, MD. No upsells-just expert service you can trust. Call today!