New Construction

Building something new in the Birmingham, AL metro area? John Segars Air partners with homeowners, builders, and commercial developers to deliver expert HVAC installations for new construction. From residential builds to large-scale commercial projects, our team designs and installs efficient heating and cooling systems tailored to your building’s unique needs—on time and within budget.

Complete Residential HVAC for New Homes

Whether you're a general contractor, builder, or homeowner planning a custom build, we work directly with your team to design and install a reliable, efficient HVAC system tailored to your home. Our licensed technicians handle everything from duct design to final inspection, ensuring maximum comfort and compliance with local building codes.

Our residential services include:

Manual J heat load calculations and system sizing
Custom ductwork layout and fabrication
Installation of high-efficiency furnaces, heat pumps, and AC units
Smart thermostat integration and zoning setup
Energy code compliance and air balancing

We help you avoid common pitfalls like undersized units or poorly placed returns, ensuring your new home’s comfort system is built to last.

Commercial HVAC Construction Services

Commercial HVAC installation requires experience, precision, and coordination across trades. From small offices to large retail and light industrial spaces, we provide engineered solutions that deliver efficient climate control and indoor air quality for your building’s specific demands.

We’re equipped to manage complex commercial installations with services including:

Plan/spec and design/build HVAC systems
Sheet metal and duct fabrication
Rooftop unit (RTU) installation
Variable refrigerant flow (VRF) systems
Ventilation and make-up air system design

Our project managers ensure on-time delivery and seamless coordination with general contractors, engineers, and inspectors.

Why Partner with John Segars Air?

With decades of experience in new construction HVAC, we understand the challenges and deadlines involved in building projects. Our Birmingham-based team is dedicated to:

Accurate bids and prompt scheduling
Code-compliant installations
Energy-efficient system design
Exceptional communication with builders and subcontractors
Post-construction testing and inspection support

We are fully licensed, bonded, and insured, and we maintain excellent relationships with builders and property developers across the metro area.

Our Process

From blueprint to final walkthrough, our HVAC construction process ensures a smooth and reliable install:

Design & Planning

We evaluate square footage, usage, and airflow needs to design systems that meet specs and codes.

Installation

Our crews install HVAC systems cleanly and efficiently, coordinating with other trades to stay on schedule.

Testing & Turnover

We test for performance, balance air distribution, and ensure the system is ready for occupancy and inspection.

Serving Birmingham and Surrounding Communities

John Segars Air Control Co proudly serves developers and builders in Birmingham, Hoover, Trussville, Homewood, Mountain Brook, Pelham, and beyond. Whether it’s a 2,000 sq ft residence or a 20,000 sq ft commercial build-out, we bring the same level of professionalism and precision to every project.

Let’s Build Comfort Into Your Next Project

Choosing the right HVAC contractor is essential to any successful construction project. With John Segars Air, you get more than a contractor—you get a trusted partner committed to performance, comfort, and long-term satisfaction. Contact us today to discuss your plans and receive a detailed proposal for your next residential or commercial build.