Our client, a well-established and reputable contractor, is seeking an experienced Air Source Heat Pump (ASHP) & MVHR Engineer to join their growing team. This role involves carrying out servicing, fault diagnosis, and repairs across a varied portfolio of domestic and commercial properties, including social housing, private residential, and commercial sites. This is a mobile position, working across occupied and void properties, as well as plant rooms and roof-mounted systems. Key Responsibilities Air Source Heat Pumps (ASHP) * Service, maintain, and fault-find on domestic and commercial ASHP systems * Diagnose electrical, hydraulic, and refrigerant-related faults * Monitor and assess system performance, including flow rates and temperature differentials * Work on associated components such as buffers, low loss headers, pump sets, and plate heat exchangers * Provide detailed reports with findings and recommended remedial actions MVHR & Ventilation Systems * Service and inspect MVHR and ventilation systems * Replace filters and complete routine maintenance tasks * Inspect fans, controls, and condensate drainage systems * Diagnose airflow and system performance issues Requirements * NVQ Level 3 in Plumbing & Heating (or equivalent) * F-Gas Category 1 certification * G3 Unvented Hot Water qualification * Recognised Heat Pump training * Strong electrical fault-finding capability * Proven experience with wet heating systems * Full UK driving licence In Return, * Company vehicle and fuel card * Ongoing manufacturer and professional training * Secure, long-term contracts with housing associations and local authorities * Clear career progression opportunities into senior or supervisory roles To be considered for this opportunity, please submit your CV. A member of the MarkMay team will be in touch promptly to discuss your application