HVAC System Design & Load Calculations

Getting HVAC installation right starts long before the equipment arrives. At Reliable AF Heating and Cooling, we provide expert HVAC system design in Brighton IL, including detailed load calculations and layout planning to ensure peak performance and energy efficiency. Whether you’re building a new home, upgrading an old system, or redesigning ductwork, we deliver custom-engineered solutions for long-term comfort.

What’s Included in Our HVAC Design Services

Custom System Layouts

We map out the exact configuration your space requires based on square footage, number of rooms, insulation, windows, orientation, and more.

ACCA Manual J Load Calculations

We use industry-standard software and data to ensure your system is properly sized — avoiding the costly problems of under- or over-sizing.

Equipment Sizing & Selection

We recommend the ideal units (make, model, and capacity) based on your home’s specific needs and your budget — no guesswork involved.

Duct Design Planning

Proper ductwork ensures your system operates efficiently. We design full duct runs, vent placement, and sizing for quiet, even airflow.

Ideal For

  • New construction HVAC planning
  • System replacements and retrofits
  • Renovations or additions requiring airflow rebalancing
  • Homeowners seeking maximum efficiency and performance

Why Homeowners in Brighton Choose Reliable AF

Veteran-owned and operated with 15+ years of technical experience

ACCA-certified design approach for industry compliance

Personalized planning for your home’s unique layout

We install what we design — ensuring full accountability

Local experts trusted throughout Brighton and surrounding areas

Client Testimonial

A row of black stars on a white background.

We built our home last year and Adam handled the HVAC design and install. He was the only contractor who took the time to explain everything and provide actual load calculations. Our system works perfectly — no hot or cold spots anywhere.

Eli D.

Photo Gallery – HVAC Design Projects

Get a Custom HVAC Design Plan

Start your project right with a system designed for performance, comfort, and longevity. Reach out today for HVAC design consulting, load calculations, or a full install.