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University of Maryland Elkton Hall

College Park, MD · MEP Engineer: Mueller Associates

Heffron delivered a complete mechanical renovation of Elkton Hall as part of a full building reset of the residence — engineered as two fast-track phases executed entirely between summer terms so students could return to a modernized building each fall. The scope replaced an aging hot-water convector system with a fully integrated dual-temperature water heating and air-conditioning system, an overhauled mechanical room, and a new domestic water system serving the entire residence hall — work that demanded tight choreography with more than a dozen other trades inside an occupied campus.

Inside the Project

Two Summers, One System

A fast-track renovation, choreographed around the academic calendar

Phase 1 · North Wing

Demolition, dual-temperature infrastructure, and 163 new fan coils

Heffron pipefitters, welders, and plumbers worked shoulder-to-shoulder with core drillers, framers, carpenters, insulators, electricians, painters, drywallers, abatement crews, and housekeeping to demolish the existing hot water convectors, mains, risers, heat exchangers, and pumps — and stand up the infrastructure for a new dual-temperature water system in their place.

By the end of the summer, 163 new fan coil units, new mains, and new risers were in place on the north side of the building, with the mechanical room rebuilt to serve them.

Phase 2 · South Wing

240 additional fan coil units, sharpened by lessons learned

The second summer carries the same multi-trade coordination forward to the south side of the building, installing 240 additional fan coil units and tying them into the dual-temperature system Heffron commissioned the previous year.

Lessons learned from Phase 1 — sequencing, prefabrication, and trade hand-offs — drive a tighter, faster install with the same standard of quality the university expects.

Mechanical Room

The heart of the system, rebuilt over a single summer

In the mechanical room, Heffron installed two heating-zone heat exchangers, a cooling-zone chilled-water heat exchanger, three dual-temperature distribution pumps, and the control valves that orchestrate automatic dual-temperature switching across the building.

A complete new domestic water system was installed alongside it — one backflow preventer, a packaged booster pump set, two domestic water heat exchangers, two zone mixing valves, and four water meters — with new domestic risers run throughout the residence hall.

Mechanical Scope

What Heffron self-performed

  • Two-phase fast-track delivery executed across two consecutive summer breaks
  • Dual-temperature water heating and cooling system — new mains, risers, and infrastructure
  • 403 new fan coil units across the north and south wings
  • Two heating-zone and one cooling-zone chilled water heat exchangers
  • Three dual-temperature distribution pumps with full control-valve sequencing
  • Complete domestic water system: backflow preventer, packaged booster pump, water heat exchangers, mixing valves, and metering
  • Multi-trade coordination with core drillers, carpenters, electricians, abatement crews, and housekeeping

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From early design assist through commissioning, Heffron self-performs the mechanical work your team can schedule a semester around.

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