There’s a reason why Carroll, a Petro Home Services company has been taking care of home comfort services throughout the city of Baltimore and Baltimore County, Maryland for more than 100 years. We provide heating oil, propane, air conditioning and other home services to help you save on energy costs – all year round. From our large fleet of residential and commercial heating oil and propane delivery trucks to experts trained to install, service and repair the latest heating and air conditioning equipment, we are always here to look after you. Our 24-hour emergency services are here when you need them most. From the coldest winter storm to the hottest summer heat wave, our delivery or service team will be on it’s way, regardless of weather conditions. We understand what you want – competitive heating oil and propane prices, reliable fuel deliveries, the latest energy-saving air conditioning and heating system installation and repairs by the best service contractors in Maryland. You get that—and much more—from Carroll.