Engineering Questions
Direct answers to the questions owners, architects, contractors, and facility managers ask about mechanical, electrical, and plumbing systems.
Mechanical
Air-Cooled vs. Water-Cooled Chillers
Air-cooled chillers reject heat to outdoor air at the unit; water-cooled chillers reject heat through condenser water and a cooling tower. Each fits different site and plant conditions.
Construction & Design
Do I Need an Engineer for a Commercial Renovation?
Many commercial renovations need an MEP engineer when HVAC, electrical, plumbing, occupancy, or life-safety systems change—or when sealed drawings are required for permit.
Electrical
How Do Commercial Generators Work?
Commercial generators start on a utility outage, produce electricity, and feed selected building loads through automatic transfer switches.
Construction & Design
How Do You Choose an MEP Engineering Firm?
Choose an MEP engineering firm based on relevant project experience, local code familiarity, coordination ability, and how clearly the firm defines scope—not just the lowest fee.
Mechanical
How Do You Control Humidity in a Commercial Building?
Commercial humidity control depends on dehumidification at the cooling coil, proper outdoor-air treatment, runtime, and controls—not just a lower thermostat setpoint.
Mechanical
How Does a Chilled Water System Work?
Chilled water absorbs heat at building coils, returns to the chiller, rejects that heat at a cooling tower or air-cooled condenser, and is pumped back out as cold supply water.
Engineering Basics
How Much Does MEP Engineering Cost?
MEP engineering fees depend on building type, system complexity, renovation constraints, and the level of construction-phase services—not a single percentage that fits every project.
Engineering Basics
What Are Engineering Design Services?
Engineering design services are the calculations, coordinated drawings, specifications, and sealed documents an engineering firm produces for a building project.
Mechanical
What Are HVAC Controls?
HVAC controls are the thermostats, sensors, controllers, valves, dampers, and drives that regulate heating, cooling, ventilation, and related mechanical equipment.
Construction & Design
What Does an MEP Engineer Do During Construction?
During construction, an MEP engineer reviews submittals, answers RFIs, visits the site at key milestones, and helps resolve field conflicts so systems are installed as designed.
Construction & Design
What Does an MEP Engineer Do?
An MEP engineer designs mechanical, electrical, and plumbing systems, coordinates them with architecture and structure, and supports the project through permitting and construction.
Construction & Design
What Does MEP Engineering Include?
MEP engineering typically includes mechanical HVAC, electrical power and lighting, plumbing, and related life-safety and controls work required to design a complete building system package.
Construction & Design
What Engineering Is Required for a Medical Office?
Medical offices typically need coordinated mechanical, electrical, and plumbing engineering sized to clinical layouts, equipment, and either new construction or renovation conditions.
Construction & Design
What Engineering Services Are Needed for Commercial Construction?
Commercial construction typically needs mechanical, electrical, and plumbing design, plus sealed documents for permitting and construction-phase engineering support.
Mechanical
What Is a Building Automation System?
A building automation system is the networked hardware and software that senses conditions, runs controllers, and operates HVAC equipment as a coordinated plant.
Mechanical
What Is a Building Management System?
A building management system is a central interface that monitors and controls building systems—most often HVAC—through sensors, controllers, and operator graphics.
Mechanical
What Is a Chilled Water System?
A chilled water system uses a chiller to cool water that is pumped to air-handling units and other coils, then returned to the plant to be cooled again.
Building Systems
What Is a Facility Assessment?
A facility assessment is an engineering review of existing mechanical, electrical, and plumbing systems to document condition, remaining life, and recommended work.
Electrical
What Is a Fire Alarm System?
A fire alarm system detects fire signatures, notifies occupants, and interfaces with other life-safety systems according to the building’s occupancy and code path.
Plumbing
What Is a Medical Gas System?
A medical gas system supplies medical air, oxygen, vacuum, and other clinical gases through dedicated, code-regulated piping in healthcare facilities.
Plumbing
What Is a Sanitary Waste System?
A sanitary waste system carries wastewater from fixtures through waste and vent piping to the building sewer and public or private treatment system.
Engineering Basics
What Is an Engineering Design Firm?
An engineering design firm is a licensed consulting practice that designs building systems and produces construction documents, rather than installing the work.
Mechanical
What Is Building Automation?
Building automation is the control system that starts, stops, sequences, and monitors HVAC and related equipment so a building operates as designed.
Building Systems
What Is Commercial Commissioning?
Commissioning is a quality process that verifies building systems are installed and operating according to the owner’s project requirements.
Plumbing
What Is Commercial Domestic Water Design?
Commercial domestic water design sizes cold and hot water supply, heaters, pumping, and backflow protection for building fixtures and equipment.
Electrical
What Is Commercial Electrical Engineering?
Commercial electrical engineering is the design of power, lighting, emergency systems, and fire alarm infrastructure for non-residential buildings.
Construction & Design
What Is Different About HVAC Design for Healthcare Facilities?
Healthcare HVAC design addresses ventilation, exhaust, temperature, humidity, airflow relationships, and controls in clinical spaces—not comfort cooling alone.
Electrical
What Is Electrical Power Distribution?
Electrical power distribution is the path from the utility service through switchgear and panels to the building’s lights, receptacles, and equipment.
Electrical
What Is Emergency Power?
Emergency power is the legally required backup source that keeps life-safety and other designated loads operating when normal utility power is lost.
Construction & Design
What Is Healthcare MEP Engineering?
Healthcare MEP engineering is the coordinated mechanical, electrical, and plumbing design of building systems for clinics, hospitals, surgical facilities, and other clinical environments.
Mechanical
What Is HVAC Engineering?
HVAC engineering is the design of heating, ventilating, and air-conditioning systems that control temperature, humidity, ventilation, and indoor air quality.
Engineering Basics
What Is MEP Engineering?
MEP engineering is the coordinated design of mechanical, electrical, and plumbing systems that make a building usable, safe, and efficient.
Plumbing
What Is Plumbing Engineering?
Plumbing engineering is the design of domestic water, sanitary waste, storm drainage, and specialty piping systems for buildings.
Plumbing
What Is Stormwater Drainage?
Building stormwater drainage collects rain from roofs and area drains and conveys it to the storm sewer or an approved point of discharge.
Mechanical
When Are Chilled Water Systems Used?
Chilled water systems are typically used in larger commercial, education, institutional, and specialized facilities where centralized cooling capacity and flexible air-side design matter.
Construction & Design
When Do You Need an MEP Engineer?
Hire an MEP engineer when a project changes HVAC, power, plumbing, life-safety systems, occupancy, or when a building department requires sealed drawings.