You can count on At Your Service Heating & Cooling LLC for AC installation in Baltimore, MD. We start with an upfront estimate that includes all work required for your air conditioner installation; and we also offer AC replacement for those in need. Once you approve the estimate, our team will go to work providing efficient services Baltimore customers have relied on for years. Our licensed, NATE-certified technicians back up every job with a satisfaction guarantee. That means that if you aren’t happy, we’ll come back to redo the work. We live and work in the area we serve. As an integrated part of the community, we value integrity and honesty and insist on it in our technicians. Therefore, we run background checks and provide on-the-job training for all HVAC technicians we send to your home!