enerBLD works with builders, HVAC contractors, HERS Raters, and homeowners on residential energy performance — from early design through quality assurance.
A Manual J is a room-by-room calculation of a home's heating and cooling loads. It's the foundation for proper HVAC equipment sizing — without one, systems are often oversized, leading to higher costs, poor humidity control, and shorter equipment life.
A Manual S selects the right equipment to match those loads, and a Manual D designs the duct system to deliver conditioned air to each room effectively.
We deliver ACCA-certified Manual J reports typically within 2 business days. Complex homes may take up to a week. Manual J pricing starts at $200.
See HVAC design pricing →
We provide primary and secondary QAD services including file QA, remote field QA, ENERGY STAR checklists, and RESNET Registry management — all in accordance with the RESNET Standards.
We view QA as a mentorship process, not a punitive one. Our reviews are thorough, but the goal is always to help Raters improve their skills and confidence alongside meeting program requirements.
Services include monitoring Rater and RFI recertification status, calibration record maintenance, and submission of the annual RESNET audit.
Get in touch →We build energy models for code compliance, green building programs, and design optimization. Whether you need to demonstrate compliance with the IECC, meet ENERGY STAR or ZERH requirements, or evaluate tradeoffs between envelope and mechanical investments, we can model it.
Our models help builders and developers identify the most cost-effective combination of measures to hit their performance targets — avoiding over-investment in one area when a cheaper path exists elsewhere.
Discuss your project →
Manual J reports are typically delivered within 2 business days. Complex homes may take up to a week. We know you're working to a schedule.
Whether it's a compliance-level Manual D or a fully detailed construction duct design, we scope the work to what you actually need — not more, not less.
Quality assurance is an opportunity to learn and improve, not a punitive exercise. We work with Raters to build their skills alongside meeting RESNET requirements.