Dan and Maria Jezierski own a plumbing, heating, and air conditioning business. They started the business after Dan decided to leave his previous job due to long hours. Dan had experience in the field through an apprenticeship and working for another company for 8 years. The business has grown from Dan working alone to a 4 person crew. They have faced challenges with difficult customers and employees but overcome them through hard work and dedication. Their advice is that owning a business takes sacrifice and treating customers well through honesty.