General Exhaust
Roof, wall and inline exhaust systems for bathrooms, utility areas, common spaces and other building needs.
Commercial ventilation systems
Move the right air.
Replace what leaves.
EMH Mechanical installs and services commercial exhaust, outside-air, energy-recovery and makeup-air systems. We plan the equipment and ductwork around the building use, airflow requirements, available routes and the rest of the HVAC system.
ExhaustRemove heat, moisture and contaminants
Makeup AirReplace air leaving the building
Fresh AirOutside-air and ERV systems
DuctworkDistribution and equipment connections
Air has to go somewhere
Exhaust is only half of the system.
Removing air changes the pressure inside the building. If replacement air is not considered, doors, comfort, draft, combustion and equipment operation can all be affected.
We look at what needs to leave, what has to replace it and how that air will move through the space. The answer may involve exhaust, makeup air, an ERV, the existing HVAC system or a combination of systems.
Commercial ventilation capabilities
Equipment, ductwork and controls that work together.
The final system is based on the building use, project requirements and the conditions found on site.
Makeup Air
Tempered and untempered replacement-air systems sized and controlled around the exhaust they support.
Energy Recovery
ERV equipment and ductwork that bring in outside air while recovering energy from the outgoing air stream.
Outside Air
Fresh-air intakes, dampers, ductwork and equipment connections for existing and new HVAC systems.
Tenant Buildouts
Ventilation changes for new layouts, occupancy changes, bathrooms, specialty rooms and commercial renovations.
Specialty Exhaust
Ventilation for heat, moisture, odors, equipment and process conditions based on the project requirements.
Ductwork & Distribution
Sheet-metal and spiral ductwork, grilles, diffusers, dampers, equipment connections and system modifications.
Controls & Interlocks
Control sequences that start, stop or coordinate exhaust, makeup air and HVAC equipment as required.
Existing buildings and buildouts
The route matters as much as the equipment.
Commercial ventilation has to fit through the building and connect to the outdoors. Ceiling space, structure, roof conditions, fire-rated assemblies, utilities and occupied areas can all change how the job is approached.
01
Confirm the useUnderstand the space, equipment, occupancy and reason ventilation is needed.
02
Review existing conditionsLook at the HVAC system, available routes, roof or wall locations and utility requirements.
03
Define the airflowCoordinate exhaust, outside air and replacement air around the project documents and application.
04
Plan the controlsIdentify how fans, dampers, makeup air and HVAC equipment need to operate together.
EMH Mechanical ventilation work
Built for the space—not pulled from a stock photo.
These photos show actual EMH Mechanical ductwork and ventilation projects.
From need to operating system
Ventilation planned around the whole building.
- 01
Review
Confirm the building use, project documents, existing systems and ventilation concern.
- 02
Survey
Review routes, access, utilities, roof or wall locations and field conditions.
- 03
Define
Set the equipment, ductwork, airflow and control scope for the project.
- 04
Install
Complete the equipment, ductwork, penetrations and mechanical connections.
- 05
Operate
Start the system, verify the control sequence and address closeout requirements.
Repair and correction work
When the fan runs but the building still has a problem.
Poor ventilation is not always a failed fan. Blocked ductwork, closed dampers, missing makeup air, incorrect controls, damaged components or changes to the building can all affect performance. We investigate the mechanical side before recommending the correction.
Commercial Workmanship1-Year Labor Warranty
EMH Mechanical provides a one-year labor warranty on commercial work. Manufacturer coverage and project-specific terms vary by equipment and scope.
Local commercial ventilation contractor
Serving northern Southeast Michigan.
Based in Clinton Township, EMH Mechanical handles commercial ventilation work throughout our primary northern service territory.
Commercial ventilation answers
Questions about exhaust, outside air and makeup air.
Contact us with the building address, intended use, plans and any known ventilation concerns.
What commercial ventilation systems does EMH Mechanical install?+
Our work includes exhaust fans, outside-air ductwork, energy-recovery ventilation, makeup-air systems, bath and general exhaust, dryer exhaust, equipment ventilation and air-distribution systems. The scope depends on the building and project requirements.
What is the difference between exhaust air and makeup air?+
Exhaust removes air from the building. Makeup air replaces some or all of the air being removed. Both sides have to be considered so the building does not operate under unintended pressure or starve other equipment for air.
Do you install ERVs for commercial buildings?+
Yes. Energy-recovery ventilators can bring in outdoor air while transferring some heat and moisture between the incoming and outgoing air streams. The equipment and airflow have to be selected for the application.
Can you add ventilation to an existing business?+
Often, yes. We review the intended use, existing HVAC system, available routes, roof or wall penetrations, electrical requirements and how new airflow will affect the building before defining the work.
Do you handle tenant buildout ventilation?+
Yes. We work on tenant improvements, renovations and change-of-use projects that require new exhaust, outside air, ductwork, equipment connections or changes to the existing HVAC system.
Can ventilation equipment be interlocked with other equipment?+
Yes. Exhaust, makeup air and HVAC equipment are often controlled together. The required sequence depends on the equipment, controls and project documents. Electrical work and specialty controls may be coordinated with other trades when needed.
Can you fix airflow or building-pressure problems?+
We can investigate mechanical conditions that contribute to poor airflow or pressure problems, including failed fans, blocked or undersized ductwork, closed dampers, missing replacement air and control issues. Some projects also require formal testing and balancing by the appropriate project specialist.
Where do you provide commercial ventilation work?+
Our primary commercial territory includes Northern Oakland County, Northern Macomb County, St. Clair County, Genesee County and Lapeer County. Contact us with the building address and project details if the property is near the edge of that area.
Commercial ventilation
Planning a buildout—or fixing an airflow problem?
Call EMH Mechanical or send us the building address, project plans, equipment information and the ventilation issue.