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Explore Our HVAC Expertise
Navigate through our extensive HVAC services, leveraging over 15 years of family-run expertise in Manual J, D, and S calculations to ensure you find the perfect solution for your heating, ventilation, and air conditioning needs.
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Efficient & Reliable
Tailored HVAC Design
Our expert team provides HVAC Design services that are customized to your specific requirements, ensuring optimal performance and energy efficiency for your space.
Precision Engineering
Utilizing precise calculations for Manual J, D, and S, we design systems that perfectly match your environment.
Energy Efficiency
Our installations prioritize sustainability, reducing energy consumption and lowering your utility bills.
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HVAC Maintenance Process
Our comprehensive maintenance process ensures your HVAC systems operate efficiently and effectively, maximizing their lifespan and performance.
01
Thorough Inspection
Our technicians conduct detailed inspections to identify potential issues and ensure all components are functioning correctly.
02
Professional Cleaning
We provide professional cleaning services to remove dust, debris, and other contaminants, improving system efficiency.
03
System Tuning
Fine-tuning your HVAC system to optimize performance and energy efficiency, ensuring comfort and reliability.
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Our Commitment to Excellence
Client Testimonials
G&J HVAC Design LLC expertise and professionalism gave me confidence in my project. If you're a homeowner, contractor, or architect in the DC, Maryland, or Virginia area looking for reliable HVAC design, I highly recommend!
Greg Martinez
@gregmartinez
The Design services provided by G&J are thorough and professional. Our system runs better than ever!
Yvette Brown
@yvettebrown
G&J HVAC Design provided a thorough and accurate HVAC design, ensuring my home's system was efficient and properly sized. Their Manual J, D, and S calculations were spot on, and they took the time to explain everything clearly. Ron was responsive, knowledgeable, and truly cared about getting the details right.
Emily Johnson
@emilyjohnson
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Impact of Our HVAC Solutions
300+
Systems Designed
25% Avg
Energy Savings
98%
Customer Satisfaction
15+
Years of Experience
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Our Expertise
With over 15 years of experience, G&J HVAC Design specializes in providing high-quality HVAC solutions tailored to your needs. Discover our core skills:
Manual J Calculation
Expertise in calculating precise heating and cooling loads for optimal system design.
95%
Manual D Duct Design
Designing efficient ductwork systems to ensure balanced airflow and comfort.
90%
Manual S Equipment Selection
Selecting the right equipment for your specific needs, ensuring efficiency and reliability.
92%
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Custom HVAC Solutions
Innovative & Personalized
Our custom solutions are designed to meet your unique HVAC needs with innovative approaches, ensuring comfort and efficiency.
Bespoke Design
Tailor-made HVAC systems designed to fit your specific requirements and environment.
Advanced Technology
Incorporating the latest technology to enhance system performance and user convenience.
Sustainable Solutions
Focusing on energy-efficient and environmentally friendly HVAC solutions.
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