A.J. Michaels Company, Baltimores Leading Heating, Cooling And Plumbing Services Company Since 1978. Were proud to call Baltimore home. Locally owned and operated since 1978, A.J. Michaels long-standing reputation of providing honest and accurate solutions installed with the highest level of expertise and latest technology available is second to none. Whether youre replacing a heat pump, furnace or boiler, looking for a new high efficiency air conditioning system, or need a plumbing emergency fixed quick, A.J. Michaels removes the doubt surrounding these important decisions. Weve earned a reputation for successfully tackling the toughest challenges, again and again. Because of our expertise, weve been called in on some of the most difficult heating, cooling and plumbing projects: from churches to cruise ships; from factories and offices to homes that supposedly cant support central air conditioning. We believe in doing it right. We dont use subcontractors. When you choose A.J. Michaels, you get highly trained experts from A.J. Michaels — and nothing less. We dont consider a job finished until our degreed engineer has inspected it. And we wont recommend any kind of solution until weve carefully looked at your home or business and listened to your needs.