Our Services

When Olney's intense heat and humidity arrive, ensure your comfort with ADI Heating & Air Conditioning. With over 40 years of local experience, we provide reliable AC repair, installation, and maintenance. Trust our highly-rated team to keep your Montgomery County home cool and efficient.

For over 40 years, ADI has kept Olney homes warm. We offer expert heating repair, including 24/7 emergency service, efficient new system installations (furnaces, boilers, heat pumps), and preventative maintenance to ensure year-round comfort and safety. Rely on our experienced team.

Ensure your heating and cooling systems operate reliably and efficiently year-round with ADI's comprehensive HVAC Maintenance Plans. Serving Olney and Montgomery County, our plans help prevent costly repairs, lower energy bills, extend system life, and provide peace of mind through demanding Maryland seasons.

With over 40 years serving Montgomery County, we provide energy-efficient, flexible ductless heating and cooling tailored to your needs. Experience targeted comfort and potential energy savings with ADI, trusted by nearly 1900 reviewers (4.9 stars).

Air ducts accumulate dust, allergens, and contaminants, affecting indoor air quality and HVAC performance. ADI Heating & Air Conditioning offers expert duct cleaning in Olney, MD, removing buildup for cleaner air, enhanced system efficiency, and a healthier home environment.

Indoor air can be filled with dust, allergens, mold spores, and other pollutants that impact your health and comfort. At ADI Heating & Air Conditioning, we provide expert Indoor Air Quality services in Olney, MD, using advanced solutions to reduce airborne contaminants, improve ventilation, and create a cleaner, healthier home environment for you and your family.

Enjoy year-round comfort and energy efficiency with expert heat pump services from ADI Heating & Air Conditioning. We provide professional heat pump installation, repair, and maintenance in Olney, MD, helping homeowners reduce energy costs while maintaining ideal indoor temperatures in every season. Trust our experienced technicians to keep your system running smoothly and your home comfortable all year long.

Cut energy costs and maximize home comfort with expert Energy Efficiency Services from ADI Heating & Air Conditioning. Serving Olney, MD, and surrounding areas, we provide professional energy audits, HVAC system upgrades, insulation improvements, and duct sealing solutions designed to reduce waste and improve performance. Let our team help you create a more efficient, comfortable, and cost-effective home environment.

Ensure your HVAC system is built for performance, comfort, and efficiency with expert Planning and Design Services from ADI Heating & Air Conditioning. Serving Olney, Laytonsville, Damascus, and surrounding Maryland communities, we specialize in duct layout, ventilation planning, ACCA Manual J and D calculations, zoning systems, and smart home integration. Trust our experienced team to design a system tailored to your home’s unique needs and energy goals.