Here at Big Al's Services, LLC, we offer expert residential heating and cooling services in Salem, NH, and surrounding areas like Atkinson, Plaistow, Newton, Windham, Derry, Hampstead, and Londonderry. We install Mitsubishi ductless mini-split systems and service all mini-split systems. Our comprehensive services include annual cleanings, service calls, no heat calls, boiler and furnace installation, and routine maintenance on your heating unit. We repair and service all residential oil-fired appliances, including boiler repair, furnace repair, oil tank removal, and installation of Roth and Granby tanks and indirect water heaters. Founded in 2017, we are licensed and insured, providing reliable and professional service you can trust.