Expert HVAC Design for Homes and Businesses in King, Pierce, Kitsap, and Thurston Counties
At QC Mechanical, we know that a reliable, efficient HVAC system begins with the right design. For more than 20 years, we’ve been helping homeowners, contractors, and businesses in the greater Seattle area enjoy comfortable, healthy, and energy-efficient indoor environments. From new construction HVAC design to retrofits and commercial projects, our team of EPA-certified and industry-trained professionals creates customized heating, cooling, and ventilation solutions built to last.
If you’re planning a new build, upgrading an outdated system, or designing HVAC for a commercial space, our design team ensures that every detail—from load calculations to ductwork layout—is handled with precision.
Why HVAC Design Matters
Many HVAC problems trace back to poor system design. Oversized units, undersized ductwork, or poorly planned layouts can lead to:
- Uneven heating and cooling
- High energy bills
- Shortened system lifespan
- Poor indoor air quality
That’s why professional HVAC design is critical. At QC Mechanical, we use proven methods, advanced technology, and decades of field experience to design systems that maximize comfort, efficiency, and reliability.
Our HVAC Design Services
1. New Construction HVAC Design
Whether you’re building a new home in Pierce County or developing a commercial property in King County, proper HVAC planning is essential. We collaborate with builders, architects, and property owners to design systems that meet the specific needs of each space. Our services include:
- Detailed load calculations
- Ductwork layout and sizing
- Equipment recommendations (furnaces, heat pumps, air conditioners, fireplaces)
- Ventilation and air quality planning
- Integration with smart controls
2. Retrofit HVAC Design
Older homes and buildings weren’t built with today’s efficiency standards in mind. Our retrofit HVAC design services bring modern comfort and performance to existing properties. We specialize in:
- Replacing outdated systems with high-efficiency options
- Retrofitting ductwork for better airflow
- Designing around structural limitations
- Improving indoor air quality and ventilation
3. Commercial HVAC Design
From office buildings and retail spaces to tenant improvements, our commercial HVAC design team delivers reliable systems that support productivity and comfort. Our commercial services include:
- Large-scale load assessments
- Zoning design for multi-use spaces
- Energy-efficient equipment selection
- Code compliance and permitting support
- Ongoing maintenance planning
Our Proven HVAC Design Process
- Initial Consultation – We listen to your goals, budget, and specific needs.
- Load Calculations – Using industry-standard tools, we calculate precise heating and cooling requirements.
- System Selection – We recommend equipment from trusted brands like Mitsubishi, RunTru by Trane, American Standard, Navien, AO Smith, Heat n Glo, and Montigo.
- Ductwork & Layout – We design efficient airflow pathways for balanced comfort.
- Zoning & Controls – For larger projects, we create zoned systems with smart thermostat integration.
- Final Design Package – We provide clear plans and cost breakdowns, ensuring transparency from start to finish.
Why Choose QC Mechanical for HVAC Design?
- 20+ Years of Experience – Our design expertise spans residential homes, commercial spaces, and complex retrofits.
- Certified Expertise – We’re EPA-Certified, a Mitsubishi Diamond Dealer, and many of our technicians are NATE-certified, ensuring top-tier professionalism.
- Trusted Brands – We install and service leading manufacturers known for quality, efficiency, and durability.
- Customer-First Service – We value honesty and integrity. Our goal is to provide solutions that make sense for your space and budget—not upsell unnecessary upgrades.
- Local Knowledge – Serving King, Pierce, Kitsap, and Thurston counties, we understand the climate challenges of the Pacific Northwest.
Our Values in Every Design
- Quality – Every design is engineered for performance and longevity.
- Integrity – We provide clear explanations and honest recommendations.
- Excellence – From the smallest retrofit to the largest commercial system, we strive for excellence in every project.
These values have helped us build long-lasting relationships throughout the greater Seattle area, earning the trust of homeowners, businesses, and contractors alike.
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Serving the Greater Seattle Area
We proudly provide HVAC design services across:
- King County – Seattle, Bellevue, Renton, Kent
- Pierce County – Tacoma, Puyallup, Bonney Lake, Lakewood
- Kitsap County – Bremerton, Silverdale, Port Orchard
- Thurston County – Olympia, Lacey, Tumwater
Wherever you are in the Puget Sound region, QC Mechanical is your trusted partner for professional HVAC design.
Get Started with QC Mechanical Today
Whether you need new construction HVAC design, a retrofit system, or a full commercial HVAC plan, QC Mechanical is here to help. With our decades of experience, trusted certifications, and commitment to customer satisfaction, we design systems that keep you comfortable all year long.
📞 Call QC Mechanical today to schedule a consultation or request a free quote online. Let our design experts bring comfort, efficiency, and value to your next project.