Whether you are located in baltimore or one of our other locations in the mid-atlantic area, give us a call when you’re ready to select and install your next boiler you’ll experience the exciting intersection of modern technology with top-notch hvac services, a combination that will bring new synergy to your life. Repair & protect is provided by domestic & general, the uk's leading specialist warranty provider. For all your central heating, gas & boiler needs. Silver lining? we know our.