Can your MEP engineering consultants handle a commercial renovation on an occupied building?

Yes. Commercial renovations and tenant improvement projects are common in the project mix, with phased MEP work designed to account for continued occupancy during construction.

What information do you need to start an MEP engineering package?

An architectural floor plan, the project's location for code and climate zone data, and any equipment preferences already selected for HVAC, electrical service, or plumbing fixtures.

MEP Engineering Services

MEP Engineering Services For Engineers and Architects

Q: Do you provide MEP engineering services USA-wide, or only in specific states?

MEP engineering services are provided across the USA, with dedicated fast-turnaround workflows for California projects that require Title 24 energy compliance.

Q: Do you provide PE-stamped MEP drawings?

The in-house team designs the mechanical, electrical, and plumbing systems, with seal and signature coordinated through licensed Professional Engineer partners for jurisdictions that require a stamped submittal.

Mechanical ductwork, electrical conduit, and plumbing piping all want the same eighteen inches above the ceiling grid, and none of them move for the others without a coordinated design telling them where to go.
CAD Drafter is an MEP engineering company delivering MEP engineering services USA-wide. We cover mechanical, electrical, and plumbing engineering as one coordinated package rather than three drawings stapled together.
As an MEP design company built around HVAC engineering services, electrical engineering services, and plumbing engineering services under one roof, we produce permit-ready MEP drawings that a plan reviewer can approve and a contractor can bid and install without a field conflict.

About Us Get A Quote

Why Architects and Builders Choose Our MEP Engineering Consultants

Most single-discipline drafters can size a duct or lay out a panel schedule on their own, but coordinating mechanical, electrical, and plumbing engineering against the same reflected ceiling plan is a different skill entirely, one that catches a duct-versus-beam conflict before it becomes a change order in the field.

Our MEP Consulting Services Include

HVAC Design & Load Calculations
Electrical Permit-Stamped Drawings
Plumbing Design & Riser Diagrams
Title 24 & Energy Code Compliance
MEP BIM & Clash Detection
Fire Protection Coordination
Equipment, Panel & Fixture Schedules
Permit-Ready MEP Drawings

Sample Upload Plan

Get Your MEP Engineering Package Started

Explore Our MEP Engineering Services

Each discipline below is its own dedicated service, drafted by a team that specializes in that system rather than treating it as a side task on a broader architectural package.

HVAC Design & Load Calculations

Manual J, S, and D load calculations, rooftop unit and mini-split system design, and commercial kitchen exhaust layouts sized to the space’s actual heat gain and loss, not a rule-of-thumb tonnage guess. This is where our HVAC design services and HVAC engineering services scope lives.

Electrical Permit-Stamped Drawings

Single-line diagrams, lighting layouts, and panel schedules covering everything from a service upgrade to EV charger and generator circuits, formatted for permit submittal as part of our electrical design services and electrical engineering services offering.

Plumbing Design & Riser Diagrams

Sanitary drainage, domestic water, storm drainage, and gas piping design, documented in the isometric and riser diagrams a plumbing inspector expects to see on a permit set, delivered through our plumbing engineering services.

Title 24 & Energy Compliance

Title 24 Part 6 compliance for California projects, alongside REScheck, COMcheck, and IECC documentation for projects outside California, turned around fast when a permit deadline is close.

MEP BIM & Clash Detection

BIM modeling from LOD 200 through LOD 400, run through clash detection so mechanical, electrical, and plumbing routing gets resolved in the model instead of on the jobsite, backed by our MEP coordination services.

Retention and Detention Pond Sizing

Pond volume, outlet structure, and freeboard calculations sized to hold construction-phase runoff and post-development peak flow within the release rate the downstream system was designed for.

Ready to Streamline Your MEP Design?

Stop letting field conflicts derail your project timeline. Partner with our MEP engineering experts to receive permit-ready, fully coordinated drawings that save time and eliminate costly rework. Let’s bring your project to life today.

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Code-Referenced Design

Every System Designed Against The Code That Governs It

Mechanical, electrical, and plumbing systems each answer to their own code, and a coordinated set still has to satisfy all three individually at plan review. We reference the standard that actually governs each system.

International Mechanical Code (IMC) / Uniform Mechanical Code (UMC)

Ventilation rate, duct sizing, and equipment clearance requirements governing HVAC design across residential and commercial occupancies.

NEC / NFPA 70

National Electrical Code provisions governing branch circuit design, panel schedules, load calculations, and equipment grounding on every electrical drawing set.

International Plumbing Code (IPC) / Uniform Plumbing Code (UPC)

Fixture unit sizing, vent piping, and drainage slope requirements referenced on sanitary, domestic water, and storm drainage design.

ASHRAE 90.1 & 62.1

Energy efficiency and ventilation standards referenced for commercial HVAC design and the energy compliance documentation that supports it.

Title 24, Part 6 (California Energy Code)

California-specific energy compliance requirements governing HVAC, lighting, and envelope performance, verified through the compliance software your jurisdiction requires.

IECC (International Energy Conservation Code)

Energy code requirements adopted outside California, verified through REScheck or COMcheck depending on the project’s residential or commercial classification.

NFPA 13 & NFPA 72

Fire sprinkler and fire alarm system standards coordinated against mechanical and electrical layouts to confirm sprinkler heads and alarm devices clear ductwork and light fixtures.

Deliverable Types

MEP Deliverables We Produce

Every MEP package is broken into the sheets your permit reviewer needs and the sheets your mechanical, electrical, and plumbing contractors each need, coordinated from one floor plan.

All

HVAC Layouts & Load Calculations

Ductwork routing, equipment placement, and the Manual J, S, and D calculations that justify the system’s sizing.

Single-Line Electrical Diagrams

Service entrance, panel, and distribution layout shown in single-line format for permit and utility coordination.

Panel Schedules & Load Calculations

Circuit-by-circuit panel schedules and the connected and demand load calculations behind the service size.

Plumbing Riser & Isometric Diagrams

Sanitary, domestic water, and gas piping shown in riser and isometric format for permit review and rough-in coordination.

Equipment & Fixture Schedules

Mechanical equipment, electrical fixture, and plumbing fixture schedules referenced to the plan and coordinated across trades.

Energy Compliance Documentation

Title 24, REScheck, COMcheck, or IECC compliance forms and calculations supporting the project’s energy code submittal.

Building Types We Serve

Commercial Buildings

Full HVAC, Electrical & Plumbing Design
RTU, VAV, Panel Distribution

Residential Buildings

Whole-House HVAC & Electrical Design
Split System, Standard Panel

Multifamily Buildings

Per-Unit HVAC & Shared Riser Design
PTAC, Central Plant

Apartment Buildings

Coordinated MEP Across Multiple Units
Split System, Central Plant

Office Buildings

VAV HVAC, Lighting & Power Design
RTU, VAV Boxes

Retail Buildings

RTU HVAC, Site & Interior Lighting
Packaged RTU

Project Types & Construction Phases We Serve

Tenant Improvements

MEP Modification Within Existing Shell
Tie-In to Existing Systems

New Construction

Full MEP Design From Ground Up
Coordinating All Trades from Scratch

Building Additions

New MEP Extension of Existing Service
Existing Capacity Verification

Renovation Projects

MEP Upgrade Within Existing Structure
Limited Ceiling & Wall Cavity Space

Remodeling Projects

Partial MEP Redesign Around Existing Layout
Matching New Work to Existing Systems

Commercial Renovations

MEP Upgrade During Occupied Operations
Phased Work Around Live Tenant Space

Structural & MEP Coordination Scope

Equipment Seismic Bracing

Attachment Point vs. ASCE 7-22 Component Force
Anchored Equipment That Survives Design Event

Structural Penetrations & Sleeves

Opening Size & Location vs. Member Capacity
No Compromised Beams or Shear Walls

Rooftop Unit Structural Support

Equipment Weight vs. Roof Framing Capacity
Curb Placed on Adequate Structure

Shaft & Chase Coordination

Riser Path vs. Column & Wall Locations
Clear Vertical Run Floor to Floor

Embeds & Anchors for MEP Equipment

Anchor Bolt Pattern vs. Structural Drawing
Equipment Set Without Field Rework

Clash Detection Between MEP & Structural

3D Model Cross-Check of All Systems
Conflicts Resolved Before Construction

Our Process

How CAD Drafter Delivers MEP Engineering Services

Our workflow exists to resolve trade conflicts in the drawing set, not after the ductwork is already hung. Here’s the 4-step process our MEP engineering consultants follow:

Floor Plan & Equipment Review

We review your floor plan, equipment preferences, and the project’s energy code jurisdiction, confirming scope across mechanical, electrical, and plumbing before design starts.

Package Quote & Timeline

You receive a scoped price and a release date broken down by discipline, whether that’s a single HVAC load calculation or a fully coordinated MEP set.

Design, Coordination & Internal QC

Our team designs each system and runs clash detection across the combined model, then passes every sheet through an internal code and coordination check before it reaches your desk.

Release, PE Coordination & Revisions

You receive editable plan files, with PE seal coordination and plan review comment responses included per your project’s engineering agreement.

5,200+

MEP Permit Packages Released

2,300+

HVAC Load Calculations Completed

1,100+

Title 24 & Energy Compliance Packages Prepared

24-48 Hrs

Standard Package Release

98%
Permit Approval
First Time

Why Choose Us

Why Architects & Builders Choose Our MEP Engineering Firm

Architects, general contractors, and property owners keep sending us their MEP engineering scope for a specific reason. Unlike firms that draft mechanical, electrical, and plumbing as three separate hand-offs, our MEP design company coordinates all three against the same reflected ceiling plan before anything goes to permit.

We Design, Your PE Confirms

We never alter design intent. Every MEP package carries the load, code, and equipment criteria your engineer of record established, ready for review, and coordinated with a licensed Professional Engineer for a stamped submittal where required.

Code-Referenced MEP Engineering

Sheets reference the IMC/UMC, NEC/NFPA 70, IPC/UPC, ASHRAE 90.1 and 62.1, Title 24 Part 6, IECC, NFPA 13/72, and ASCE 7-22 as each applies to your project’s systems.

Residential Through Industrial Range

Single-family and multifamily HVAC and electrical packages, alongside coordinated MEP sets for hotels, healthcare facilities, and manufacturing buildings.

Scalable Engineering Capacity

Take on a single Title 24 compliance form or a full coordinated MEP and BIM package without adding an engineering seat to your own office.

Software Our MEP Engineering Team Works In

AutoCAD MEP

Revit MEP

Trane TRACE 700

EnergyPro

Navisworks

Benefits Of Outsourcing To The Team

Why Firms Outsource MEP Engineering Services

Keeping mechanical, electrical, and plumbing engineers on staff, each one licensed in their own discipline, is a high fixed cost against a permitting pipeline that rarely needs all three at once. Our MEP engineering solutions let architects and builders flex capacity across all three trades without carrying that overhead.

Lower Engineering Overhead: A per-package rate instead of three salaried discipline engineers on staff.

Faster Plan Release: A dedicated MEP team means your permit set isn’t queued behind someone else’s deadline. Standard packages release in 24-48 hours.

Built-In QC Review: Every package passes an internal code and cross-discipline clash check before it reaches your desk for approval.

Technologies Our MEP Engineering Team Works With

Manual J/S/D Load Calculation Modeling
BIM Clash Detection Across Mechanical, Electrical & Plumbing
Panel Schedule & Circuit Load Modeling
Plumbing Fixture Unit & Pipe Sizing Analysis
Title 24 / REScheck / COMcheck Compliance Modeling
Cloud-Based Plan Review & Markup

Sample contact Us

Our Certificate

1 2 3

Client Feedback To Our MEP Engineering Services

★ ★ ★ ★ ★

Clash detection caught a duct running straight through a structural beam before framing started, which would have been a costly fix in the field.

Aaron WhitfieldGeneral Contractor

★ ★ ★ ★ ★

Title 24 package came back fast enough that we hit our submittal deadline with a day to spare, and the energy compliance numbers matched our envelope design exactly.

Renata BoyleArchitect

★ ★ ★ ★ ★

Kitchen exhaust design was sized correctly for our hood equipment on the first submittal, which our health inspector approved without any follow-up questions.

Devon MackeyRestaurant Developer

Frequently Asked Question

What does a MEP engineering company actually design?

An MEP engineering company designs the mechanical (HVAC), electrical, and plumbing systems inside a building, including load calculations, equipment selection, panel schedules, piping layouts, and the coordination that keeps all three from conflicting with each other or the structure.

Do you provide MEP engineering services USA-wide, or only in specific states?

We provide MEP engineering services across the USA, with dedicated fast-turnaround workflows for California projects that require Title 24 energy compliance.

What’s the difference between an MEP engineering firm and hiring separate HVAC, electrical, and plumbing consultants?

An MEP engineering firm designs all three systems as one coordinated package, which catches conflicts between trades before construction. Separate consultants typically design in isolation, leaving coordination to be discovered in the field.

Do you provide PE-stamped MEP drawings?

Our in-house team designs the mechanical, electrical, and plumbing systems, and we coordinate seal and signature through our licensed Professional Engineer partners for jurisdictions that require a stamped submittal.

What is MEP BIM coordination and clash detection, and do I need it for my project?

MEP BIM coordination models mechanical, electrical, and plumbing systems together in 3D, and clash detection catches physical conflicts, like a duct and a beam occupying the same space, before construction starts. It’s most valuable on multi-story or tightly coordinated commercial projects.

MEP Engineering Services For Engineers and Architects

Why Architects and Builders Choose Our MEP Engineering Consultants

Our MEP Consulting Services Include

Get Your MEP Engineering Package Started

Explore Our MEP Engineering Services

HVAC Design & Load Calculations

Electrical Permit-Stamped Drawings

Plumbing Design & Riser Diagrams

Title 24 & Energy Compliance

MEP BIM & Clash Detection

Retention and Detention Pond Sizing

Ready to Streamline Your MEP Design?

Every System Designed Against The Code That Governs It

MEP Deliverables We Produce

HVAC Layouts & Load Calculations

Single-Line Electrical Diagrams

Panel Schedules & Load Calculations

Plumbing Riser & Isometric Diagrams

Equipment & Fixture Schedules

Energy Compliance Documentation

How CAD Drafter Delivers MEP Engineering Services

Floor Plan & Equipment Review

Package Quote & Timeline

Design, Coordination & Internal QC

Release, PE Coordination & Revisions

Why Architects & Builders Choose Our MEP Engineering Firm

Software Our MEP Engineering Team Works In

Why Firms Outsource MEP Engineering Services

Technologies Our MEP Engineering Team Works With

Our Certificate

Client Feedback To Our MEP Engineering Services

Frequently Asked Question

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