Senior Residential Mechanical Designer - HVAC Fairfax, VA

Senior Residential Mechanical Designer - HVAC
- Base Salary to 75k/year
- Fairfax, VA Our client is an engineering and consulting firm supporting residential building performance, energy efficiency, and mechanical design projects. They provide technical solutions focused on residential HVAC design, energy code compliance, and high-performance construction.

The Senior Residential Mechanical Designer - HVAC is responsible for residential HVAC system design, including load calculations, duct design, equipment sizing, ventilation, and code compliance. This position requires hands‑on experience with AutoCAD, Wright Soft or similar residential HVAC design software, and ACCA Manual J, Manual D, and Manual S methodologies. The role also performs technical design reviews, supports project execution, and provides technical guidance to other team members.

Lead the preparation, review, and validation of residential HVAC load calculations, duct sizing and design, ventilation strategies, and equipment sizing in accordance with ACCA standards and applicable energy codes

Perform residential HVAC design using AutoCAD, Wright Soft or similar residential HVAC design software

Apply ACCA Manual J, Manual D, and Manual S methodologies to residential mechanical system design

Perform QA/QC reviews of residential mechanical designs, HVAC calculations, and energy modeling deliverables

Review designs for IECC, ENERGY STAR, state residential energy code, and applicable mechanical requirements

Identify design, code compliance, and project workflow issues and develop technical resolutions

Manage project deliverables, milestones, priorities, and design schedules

Coordinate mechanical design requirements with internal departments, clients, builders, architects, and project stakeholders

Interpret project requirements, jurisdictional requirements, and residential HVAC design criteria

Maintain project documentation, calculations, and reporting using Excel, SharePoint, and internal systems

Support development of residential HVAC design standards, templates, technical procedures, and process improvements

Train and mentor junior and mid-level team members on HVAC design procedures, software applications, and code compliance

Support onboarding and technical training for new staff

Maintain knowledge of IECC requirements, state residential energy codes, ACCA standards, and residential HVAC design practices

B.S. Degree in Mechanical Engineering or related field is required3+ years of relevant experience in Residential Mechanical (HVAC) Design Advanced proficiency in AutoCADAdvanced proficiency in HVAC load calculation

Advanced proficiency using Wright Soft or similar residential HVAC design software

Advanced understanding of ACCA Manual J, Manual D, and Manual S methodologies

Strong working knowledge of IECC, ENERGY STAR, and state residential energy code requirements

Base salary in the 68k - 75k/year range

Hybrid work schedule for local candidates, fully remote potential for out of state candidates.

20 Annual Paid Days Off (12 Days of PTO, Birthday PTO, & 7 Company Paid Holidays)
Company Sponsored Medical Insurance that includes a contribution of up to 50% off the monthly premium

Dental & Vision Insurance
401k Retirement Plan with up to a 4% company match vested immediately

Basic Life & Supplemental Life Short-Term & Long-Term Disability Accident & Pet Insurance Corporate Sponsored Events Paid Professional Development & Salary Incentives through Learning/Certification Opportunities #INDALL