BLS metro-level wage data places Heating, Air Conditioning, and Refrigeration Mechanics and Installers pay in Hagerstown-Martinsburg, MD-WV at a median of $58,410 per year ($28.08/hr/hour), drawn from the OEWS May 2025 release for this Metropolitan Statistical Area. Compared to the national median of $61,010, Hagerstown-Martinsburg pays 4% below, which typically tracks with a lower local cost of living or smaller specialized-employer cluster. Approximately 280 heating, air conditioning, and refrigeration mechanics and installerss are employed across the Hagerstown-Martinsburg MSA in SOC 49-9021.

The Hagerstown-Martinsburg pay distribution spans from $38,040 at the 10th percentile to $87,790 at the 90th — a 2.3× spread that reflects experience tenure, specialization, employer size, and the difference between public-sector, nonprofit, and private-sector compensation inside the metro. The 25th percentile sits at $46,350 and the 75th at $72,110, so half of Hagerstown-Martinsburg-based heating, air conditioning, and refrigeration mechanics and installerss earn within that middle band.

Metro figures capture where you actually work, not just where you live — which matters for commuters. BLS draws metro boundaries from the OMB MSA definitions, so Hagerstown-Martinsburg, MD-WV covers the central city plus outlying counties tied to the metro economically. Remember that OEWS wages reflect base pay only: employer-provided health insurance, retirement matches, stock options, signing bonuses, overtime, and tips are excluded and can add 20-40% to real total compensation. Before using this metro median as a negotiation anchor, triangulate against the same occupation's national profile (linked below), its state-wide MD data, and peer-metro comparisons — a median is a starting point, not a ceiling.