Premier HVAC Services in Leander, TX

At McCullough Heating & Air Conditioning, we deliver top-tier HVAC solutions to homes across Leander and the greater Central Texas area. Whether you’re upgrading to an energy-efficient system or need fast, reliable repair, our locally rooted team provides expert service with integrity, precision, and care.

Full-Service HVAC Support for Leander Homeowners

Our licensed technicians offer complete HVAC care tailored to the needs of Leander’s homes—from older neighborhoods to new developments near Devine Lake Park. Every service is designed for long-term efficiency, comfort, and peace of mind.

Air Conditioning Installation in Leander

Beat the Texas heat with a high-efficiency AC system custom-fitted to your home’s layout and cooling demands. We install units with advanced features like zoning, smart thermostats, and high SEER ratings for better performance and energy savings.

Reliable AC Repair When You Need It Most

Experiencing uneven cooling or strange noises? Our expert diagnostics and fast turnaround times get your air conditioner running smoothly again—before minor issues become costly breakdowns.

Seasonal AC Tune-Ups & Maintenance

Our thorough inspections help reduce energy bills and extend system life. Schedule an annual AC tune-up to catch wear-and-tear early and stay cool all summer.

Heating System Installation

When cooler weather sets in, your Leander home deserves a reliable, energy-smart heating system. We install modern furnaces and heat pumps with quiet operation, efficient airflow, and powerful performance tailored to Texas winters.

Heating Repairs with Fast Turnaround

From ignition problems to heat exchanger issues, we resolve heating failures efficiently so your family stays safe and warm through the season. We arrive prepared with the parts and expertise needed to restore heat quickly and minimize disruption to your home.

Preventative Heating Maintenance

Regular maintenance prevents mid-season surprises. Our comprehensive heating inspections keep your system running safely, cleanly, and efficiently.

Expert Heat Pump Services

Heat pumps are ideal for Leander’s year-round climate and offer an energy-efficient solution for both heating and cooling. We install, maintain, and repair both traditional and ductless systems to suit your home’s unique layout and comfort goals.

Smart Thermostat Installation

Enhance control and energy efficiency with programmable or smart thermostats tailored to your HVAC system. Monitor your comfort from anywhere and get more from your heating and cooling investment with intelligent climate control.

Why Leander Residents Choose McCullough Heating & Air Conditioning

With deep ties to the Leander community, we’re more than HVAC experts—we’re trusted partners in your home comfort. Every project reflects our commitment to quality, integrity, and local service.

Fast, Friendly Service with a Local Touch

We show up on time, communicate clearly, and treat your home like it’s our own—because we live and work in the same neighborhoods we serve. Our customers count on us for courteous service and long-lasting results.

Experienced Technicians with a Customer-First Focus

Our licensed professionals bring decades of experience and ongoing training to every job. We listen, explain, and deliver solutions that make sense for your comfort, budget, and goals.

Transparent Estimates and No Surprise Pricing

You’ll always know the cost upfront with no hidden fees or unnecessary upsells. Our honest recommendations are built around what’s best for your home—not our bottom line.

Community Commitment Beyond HVAC

We proudly support the Leander Educational Excellence Foundation (LEEF) and other Central Texas initiatives that uplift students, empower educators, and strengthen families. Giving back is part of our mission—through mentorships, sponsorships, and donations, we invest in the well-being of the communities we serve. Our team doesn’t just work in Leander—we live here, raise families here, and believe in building a better future together.

Proudly Serving Leander and the Greater Central Texas Community

McCullough Heating & Air Conditioning proudly provides HVAC services throughout Leander and neighboring areas, including Liberty Hill, Cedar Park, and Brushy Creek. Whether you’re located near Devine Lake Park or in a growing development by Crystal Falls, our team brings personalized comfort solutions to your door.

With deep knowledge of local housing styles and climate demands, we offer reliable, energy-efficient results that match the rhythm of Central Texas living.