HVAC Retrofit Engineering in Greenbelt, MD
Greenbelt is a Maryland commercial and institutional construction market with steady project demand across office, retail, healthcare, and government facility development.
49 states · 10+ PEs · Same-day quotes on qualifying scopes · Zero excuses
What we engineer
Heat-pump and VRF/VRV conversions replacing gas and aging electric systems; dedicated outdoor air systems (DOAS) with energy recovery for humidity control; chiller and boiler plant retrofits; pneumatic-to-DDC controls upgrades; and refrigerant transitions off high-GWP HFCs per the AIM Act phasedown — full mechanical design with load calculations per ACCA Manual N / ASHRAE, ventilation per ASHRAE 62.1, and energy compliance per ASHRAE 90.1 and IECC.
Compliance & incentive stacking
NYC Local Law 97, Boston BERDO, Denver Energize Denver, Washington's Clean Buildings Performance Standard, Maryland BEPS, St. Louis BEPS — we engineer the HVAC retrofits that hit building performance standard targets, and we stack utility rebates (ComEd, Xcel, Mass Save, NYS Clean Heat, Energy Trust of Oregon, Efficiency Maine, Focus on Energy) to cut net project cost.
Backed by licensed PEs
All HVAC retrofit engineering is backed by Apex Grid Engineering: 10+ PEs licensed across 49 states, 20+ engineers, 15+ years of plan sets that pass plan check.
Project types
- Commercial office & retail
- Healthcare & medical facilities
- Institutional & civic
Everything else your project needs
MEP Engineering in Greenbelt
Mechanical, electrical & plumbing design — permit-ready drawings, best price.
Structural Engineering in Greenbelt
Structural design, analysis & PE stamping — permit-ready drawings, best price.
Civil Engineering in Greenbelt
Site civil & land development — permit-ready drawings, best price.
Electrical Engineering in Greenbelt
Power distribution, panels & lighting design — permit-ready drawings, best price.
Plumbing Engineering in Greenbelt
Water, sewer, gas & fixture design — permit-ready drawings, best price.
HVAC Engineering in Greenbelt
Heating, cooling, ventilation & ductwork — permit-ready drawings, best price.
PE Stamping in Greenbelt
Licensed PE stamps on your plans — fast turnaround, best price.
Structural Stamping in Greenbelt
Licensed PE stamps on structural plans & calculations — fast turnaround, best price.
MEP Stamping in Greenbelt
Licensed PE stamps on MEP plan sets — fast turnaround, best price.
Civil Stamping in Greenbelt
Licensed PE stamps on civil & site plans — fast turnaround, best price.
Fire Protection Engineering in Greenbelt
Fire sprinkler, alarm & suppression design — permit-ready drawings, best price.
Plan Check Corrections in Greenbelt
Plan check comments answered fast — resubmittal-ready corrections, best price.
Energy Modeling & Compliance in Greenbelt
Title 24, COMcheck & ASHRAE 90.1 compliance — pass plan check, best price.
Tenant Improvement Engineering in Greenbelt
TI engineering for office, retail & restaurant buildouts — permit-ready, best price.
Low Voltage Engineering in Greenbelt
Fire alarm, data, security & AV design — permit-ready drawings, best price.
Seismic Retrofit Engineering in Greenbelt
Earthquake retrofit design & PE-stamped plans — best price.
Solar Engineering in Greenbelt
PV structural analysis, NEC 690 electrical design & interconnection — permit-ready drawings, best price.
Fire Alarm Engineering in Greenbelt
NFPA 72 fire alarm design, voice evacuation & mass notification — permit-ready drawings, best price.
Security System Engineering in Greenbelt
Access control, video surveillance & intrusion detection design — permit-ready drawings, best price.
Building Automation Engineering in Greenbelt
BACnet controls, BMS design & smart building integration — permit-ready drawings, best price.
Elevator Engineering in Greenbelt
ASME A17.1 elevator design, modernization & code compliance — permit-ready drawings, best price.
Industrial Electrical Engineering in Greenbelt
NEC Article 430 industrial power design, arc flash & hazardous locations — permit-ready drawings, best price.
Plumbing Design Engineering in Greenbelt
IPC/UPC plumbing design, medical gas & backflow engineering — permit-ready drawings, best price.
Electrical Panel Upgrade Engineering in Greenbelt
Panel upgrades, load calculations & utility coordination — permit-ready drawings, best price.
Emergency Power Engineering in Greenbelt
Generators, NFPA 110 systems & life-safety power design — permit-ready drawings, best price.
Renewable Energy Engineering in Greenbelt
Wind, geothermal & hybrid renewable engineering — feasibility, PE-stamped design & interconnection, best price.
Energy Audit Engineering in Greenbelt
ASHRAE Level 1/2/3 energy audits, benchmarking & retro-commissioning — find the waste, prove the savings, best price.
EV Charging Engineering in Greenbelt
EV charging station design — NEC 625, load calculations & service upgrades, permit-ready drawings, best price.
Water Treatment Engineering in Greenbelt
Filtration, disinfection, reverse osmosis & backflow design — permit-ready water engineering, best price.
Battery Storage Engineering in Greenbelt
Battery storage design per NEC 706 & NFPA 855 — permit-ready drawings, best price.
Commissioning Engineering in Greenbelt
Building commissioning & functional testing — systems verified to work as designed, best price.
Data Center Engineering in Greenbelt
Mission-critical MEP for data centers — Tier III/IV electrical, cooling & fire protection, best price.
Generator Engineering in Greenbelt
Standby generator sizing, ATS & emergency power design — permit-ready drawings, best price.
Lighting Design Engineering in Greenbelt
Photometric lighting design, controls & code compliance — permit-ready drawings, best price.
Medical Facility Engineering in Greenbelt
Medical gas, exam-room HVAC & healthcare electrical design — permit-ready drawings, best price.
Commercial Kitchen Engineering in Greenbelt
Commercial kitchen hoods, grease exhaust, gas & interceptors — permit-ready drawings, best price.
Pool Engineering in Greenbelt
Pool structural, systems & permits — engineered for plan check approval.
ADU Design in Greenbelt
Accessory dwelling unit plans — from concept to permit.
Engineering Cost Guide in Greenbelt
Straight answers on what engineering really costs.
HVAC Retrofit Engineering nearby
Annapolis · Baltimore · Bethesda · Bowie · College Park · Columbia · Dundalk · Ellicott City · Frederick · Gaithersburg · Germantown · Hagerstown