Frank J. Klein & Sons Inc.

Frank J. Klein & Sons Inc. holds a 4.9-star rating across 22 homeowner reviews in Pikesville, Maryland. Serving Baltimore and the surrounding metropolitan area since 1929, this multi-generation family operation handles plumbing, heating, air conditioning, and geothermal installations and repairs. Their licensed technicians provide both routine maintenance and emergency service calls across residential properties in the region.

This contractor distinguishes itself through geothermal heating and cooling installations alongside conventional forced-air systems. They install and service hot water heaters, boilers, heat pumps, furnaces, and air conditioning equipment from major manufacturers. Indoor air quality solutions include electronic air cleaners and humidifiers, with planned maintenance agreements available for ongoing system performance. Free estimates cover heating, cooling, hydronic equipment, and plumbing remodeling projects.

Reviewers consistently highlight rapid service response. One homeowner reported a technician arrived within one hour of a same-day call when their furnace began short cycling on a cold morning, resolving the issue the same day at a reasonable cost. Another customer described a complete AC system replacement completed within a week of approval, with the crew finishing in one day and leaving the home spotless. A third reviewer mentioned receiving a handwritten thank-you note following their installation, noting the teams respectful communication and fair pricing throughout the project.