Built on trust. Proven for mission-critical work.
Long-term partnerships built on trust, transparency, and results.
Award-winning safety practices that protect every person on every job.
More than a century of mission-critical mechanical construction across the DMV.
Design assist, BIM coordination, and planning that reduce risk before ground breaks.
Lab Mechanical Services
As the region’s premier mechanical contractor for the life sciences industry, Heffron designs, installs, and maintains the critical systems that power today’s most advanced life sciences and biotech facilities — from cleanroom HVAC requiring 240+ air changes per hour to high-purity process piping for specialty gases and ultrapure water.
GMP · FDA · ISO 14644
Mission-Critical Life Sciences
Central utility plants, cleanroom HVAC & high-purity systems
Selected Work
GMP Therapy Production
Vaccine Manufacturing
Biopharmaceutical R&D
Life Science Manufacturing
Biopharma Manufacturing
Vaccine Development
Antibody-Drug Conjugates
Federal Research
What We Build
Life Sciences
01 · Life Sciences
Custom mechanical systems for pharmaceutical manufacturing, cell therapy, and biotech research — including aseptic fill-finish and Grade A/B cleanrooms.
We create custom mechanical systems for pharmaceutical manufacturing, cell therapy production, and biotech research facilities throughout the region. Our construction expertise encompasses everything from aseptic fill-finish environments to cell culture laboratories requiring Grade A/B cleanliness classifications.
Our partners include Emergent BioSolutions in Rockville, GlaxoSmithKline (formerly Human Genome Sciences) on Shady Grove Road, AstraZeneca’s cell therapy lab, and United Therapeutics’ production facility — each demonstrating our ability to deliver systems that meet the industry’s most demanding specifications.
Cleanrooms
02 · Cleanrooms
Precision HVAC for ISO 5–8 controlled environments: HEPA/ULPA filtration, pressure cascades, and welded stainless ductwork.
Precision HVAC for controlled environments requires specialized knowledge our team has developed across hundreds of cleanroom installations. We design and install systems achieving ISO 5 through ISO 8 classifications, with surface finishes meeting Ra ≤ 0.8 µm requirements in critical zones.
Our cleanroom scope spans air handling units with terminal HEPA/ULPA filtration, positive and negative pressure control systems, laminar and turbulent airflow configurations, stainless steel ductwork with welded seams, and continuous environmental monitoring.
Process Piping
03 · Process Piping
Lab gas, high-purity water (18.2 MΩ·cm), and chemical distribution in 316L stainless, PVDF, and PFA — installed by ASME Section IX welders.
Laboratory operations depend on reliable delivery of gases, chemicals, and high-purity water. We deliver laboratory gas systems for nitrogen, oxygen, compressed air, and specialty gases using copper and stainless steel piping with ASME Section IX certified welders.
High-purity water systems achieve 18.2 MΩ·cm resistivity with proper loop design that eliminates dead legs. Chemical distribution uses corrosion-resistant 316L stainless steel, PVDF, and PFA for aggressive media — paired with properly contained chemical-waste routing.
Critical Systems
Patient Care Continuity First
Precise temperature (18–26°C) and humidity (45–65% RH) control with tolerances of ±2–5% for research environments.
HEPA filtration, 20–480 air changes per hour depending on classification, and pressure cascade management.
Safe removal of hazardous vapors with proper capture velocity and emergency shutdown interlocks.
OSHA-compliant safety systems installed per plumbing codes with regular testing protocols.
Compressed air, nitrogen, and specialty gas distribution with leak detection and proper materials selection.
Distilled, deionized, and ultrapure water with UV sterilization, final filtration to 0.1–0.2 µm, and validated maintenance procedures.
Proper containment, neutralization, and disposal systems for laboratory specimens and chemical waste.
Clean steam generation and distribution supporting sterilization equipment throughout the facility.
Central vacuum distribution for laboratory equipment with proper materials and contamination prevention.
Continuous environmental monitoring with data logging for compliance documentation and audit readiness.
Our Process
Four disciplined phases from facility assessment through validation-ready handover and ongoing support.
Assess
Facility Assessment & Code Review
Design
Custom System Design
Install
Professional Installation & Testing
Support
Training & Ongoing Support
We ensure your team can maintain optimal system performance — staff training on system operation and routine maintenance, Standard Operating Procedures for maintenance activities, preventive maintenance programs through our service department, 24/7 emergency support for critical system failures, and ongoing calibration and monitoring system support.
We selected Heffron because we were confident you could maintain our challenging schedule at a competitive price. You not only met that threshold, you surpassed our highest expectations. Our growing relationship with Heffron has helped us in the search for solutions to our most challenging problems — the development of a full research and development campus.
Director — Research and Development Campus
FAQ
We provide laboratory mechanical services to:
Our range of experience across these sectors means we understand both the common requirements and unique challenges each industry faces.
Get Started
When your research depends on mechanical systems performing flawlessly, you need a partner with proven expertise in laboratory and research facilities. From Emergent BioSolutions to AstraZeneca to United Therapeutics, the region’s leading life sciences organizations trust our team to design, build, and maintain their most critical environments.
Service Area: Maryland, Virginia, Washington DC, and surrounding regions