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Secure comfort all year in Louisville with our expert HVAC installation and replacement solutions. Get a free estimate today and ensure efficient, reliable climate control at home.

Facing the brunt of local harsh winters or oppressive summers without a reliable climate control system can be dangerous and costly. Ensure your comfort with our efficient HVAC installation and replacement services. Get a free estimate today.
When your heating or cooling system fails, you need a rapid response to restore safety and comfort to your home. Allegiance Heating & Air, LLC. specializes in high-efficiency replacements and precision installations that lower energy bills and provide consistent temperature control:
All services come with a full warranty and strict adherence to local building codes.
Living in this region means dealing with a humid subtropical climate where weather patterns swing drastically between seasons. Your home requires a system capable of handling high humidity levels in July and freezing temperatures in January. An undersized or outdated unit will struggle to maintain set temperatures, leading to continuous running cycles, increased wear and tear, and skyrocketing utility costs.
We provide comprehensive installation services for a variety of systems designed to meet these specific environmental demands. Whether you require a traditional split system, a packaged unit, or a high-efficiency heat pump, the goal is ensuring the equipment matches the thermal load of your property. Proper sizing is critical; a unit that is too large will short-cycle and fail to dehumidify the air, while a unit that is too small will run indefinitely without reaching the desired temperature.
Modern HVAC technology offers significant improvements over models manufactured just a decade ago. New systems utilize advanced refrigerants and variable-speed blowers to modulate airflow, providing precise comfort control. By upgrading your infrastructure, you gain better control over indoor air quality and humidity, which is a primary concern for homeowners in Louisville and the surrounding areas.

When you schedule a replacement or new installation, you are purchasing more than just a piece of machinery; you are investing in a complete climate solution — schedule service today. Our service is designed to be turnkey, managing every aspect of the project from the initial calculation to the final safety check:
Every installation begins with a detailed load calculation. We do not simply swap out the old unit for a machine of the same size. Home renovations, window upgrades, or changes in insulation can alter the heating and cooling requirements of a structure:
Replacing an HVAC system involves handling heavy equipment and regulated materials. We manage the safe disconnection of gas lines, electrical circuits, and refrigerant lines:
The longevity of your system depends heavily on the quality of the installation. Even the highest-rated equipment will fail prematurely if installed incorrectly:
Knowing the specific steps of an installation helps homeowners prepare for the service day. A standard replacement typically takes one day, though complex setups or major ductwork modifications may extend the timeline, request a quote for complex setups. The process is systematic, prioritizing safety and property protection.
Technicians arrive with the necessary equipment and protective gear. The first priority is protecting your home flooring and clearing a path to the service areas:
Once the old unit is removed, the new system is positioned. This phase requires technical expertise to ensure all connections are secure and code-compliant:
After physical connections are made, the system must be charged with refrigerant and calibrated for the specific home environment:
The job is not complete until the system is running at peak efficiency. This final audit verifies performance metrics against factory specifications:
Homeowners often struggle to determine if a malfunction warrants a simple repair or a full system replacement. Making the right financial decision involves analyzing the age of the unit, the cost of the repair, and future efficiency gains:
A common industry standard for making this decision is the 50% rule. If the cost of the repair approaches 50% of the value of the system, or 50% of the cost of a new unit, replacement is generally the smarter financial move. Investing heavy capital into a dying system often leads to throwing good money after bad.
HVAC systems typically last between 10 and 15 years depending on maintenance history and usage intensity:
Older units often operate at significantly lower efficiency levels compared to modern standards:
Sometimes a unit runs but fails to provide comfort. If your home has hot and cold spots, excessive dust, or humidity issues that the current system cannot resolve, a replacement with modern zoning or variable-speed technology offers a solution that repairs cannot achieve. Allegiance Heating & Air, LLC. can assess your current comfort levels to recommend the appropriate upgrade.
Local regulations and climate factors play a massive role in how HVAC installations are planned and executed. Compliance with these rules ensures the safety of your home and the validity of your insurance coverage.
In this area, HVAC replacements and new installations require permits from local building departments. This oversight ensures that the work meets safety standards regarding electrical wiring, gas piping, and venting:
Local utility providers often have specific requirements for equipment connection and efficiency:
While breakdowns often force immediate replacement, planning an installation during shoulder seasons (spring and fall) can be beneficial:
The local humidity levels require specific attention to moisture removal:
Selecting the right contractor is just as important as selecting the right brand of equipment. An improper installation can reduce the efficiency of a high-end unit by up to 30%. We focus on technical precision and customer transparency to deliver lasting results:
Secure your home’s comfort and efficiency with a professional installation that stands up to the elements.
Don’t wait for extreme temperatures to take a toll on your home—experience the peace of mind that comes from having a reliable, high-efficiency HVAC system installed by the experts at Allegiance Heating & Air, LLC. Our team delivers fast service, precise installations, and lasting comfort tailored to Louisville’s demanding climate. Whether you're upgrading outdated equipment or preparing for seasonal changes, we’ll guide you with clear recommendations, transparent pricing, and guaranteed workmanship. Your comfort, safety, and energy savings start with one decision—contact Allegiance Heating & Air, LLC. today to schedule your free estimate and in-home consultation.
MAINTENANCE PLAN
ALLEGIANCE HEATING & AIR, LLC SERVICE CLUB
At Allegiance Heating & Air, LLC, we provideprofessional HVAC maintenance and offer exclusive deals and discounts within our Service Club Membership to those in and around New Albany, IN. Members of Allegiance Heating & Air, LLC Service Club receive the following benefits:


BENEFITS OF THE MANTEINANCE PLAN
One free cleaning on your A/C.
One free cleaning on your furnace.
Priority scheduling.
Free trip fee with service calls.
Reduced after-hours trip fees.
15% discount on parts and labor.
