Commercial HVAC contractor for buildings that can't run hot.
From air handling and chilled-water plant to VRF, ductwork and sheet metal, Gerasa delivers the complete mechanical scope for commercial projects across Ashburn, Northern Virginia and the Greater D.C. metro — engineered in BIM and delivered on schedule.
Comfort, efficiency and uptime — engineered in.
Commercial mechanical systems are unforgiving: oversize them and you waste energy for decades; undersize them and the building never performs. Gerasa engineers the HVAC scope around the real loads, then coordinates it in BIM so it fits the building the first time.
We deliver new construction, retrofit and tenant fit-out work — as a design-build partner, a design-assist collaborator, or building straight to an engineer's plan-and-spec drawings. Whatever the delivery model, you get one accountable mechanical partner from preconstruction through test-and-balance.
Why it matters for your bid
A coordinated, constructible HVAC scope protects the general contractor's critical path. We flag clashes and long-lead equipment early, prefabricate where it speeds the schedule, and commit to dates we can hold.
The full mechanical scope.
Air, water and ventilation — designed, coordinated and delivered as one.
Air Handling & RTUs
Air handlers, rooftop units, makeup air and split systems sized to real building loads.
Chilled Water & Hydronics
Chillers, boilers, pumps and piping for efficient central-plant heating and cooling.
VRF / VRV Systems
Variable refrigerant flow for zoned, energy-efficient comfort in complex layouts.
Ductwork & Sheet Metal
Supply, return and exhaust ductwork fabricated for fit and clean airflow.
Exhaust & Ventilation
Kitchen, lab, garage and general exhaust engineered for code and air quality.
Test, Adjust & Balance
Commissioning support so systems perform to spec on day one — and stay that way.
From bid to balanced.
Preconstruction
We model the systems and return a constructible budget and schedule — flagging risk before it costs you.
Coordination
Every duct, pipe and hanger laid out and clash-checked in BIM, issued as buildable shop drawings.
Build & Install
Assemblies prefabbed off-site and installed against the coordinated model — on the dates we committed to.
Commission & Care
Test, adjust and balance to spec, clean documentation, and service for the building's life.
Pricing an HVAC scope?
Send your drawings and bid date — we'll return a constructible mechanical number, fast.