Shamrock Service Co., Inc. has been providing air conditioning and heating services in homes and businesses like yours since 1965. It has remained in the same family since its inception.

We serve Anne Arundel, Carroll, Frederick, Howard, Montgomery, and Prince Georges Counties. We also serve the District of  Columbia and Northern Virginia.

We offer service and preventive maintenance second to none. Our solid reputation is solid and we look forward to developing a long lasting relationship.