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Upgrade to a high-efficiency HVAC system in Greenville, IN, and experience reduced energy bills and enhanced home comfort. Schedule your installation today!

Dealing with extreme temperatures can be tough when your HVAC system isn't up to the mark, specifically when facing the distinct seasonal shifts in Greenville, IN. Don't let a faulty or outdated system compromise your comfort or safety; contact us immediately to schedule a comprehensive system assessment or apply for financing.
When your heating and cooling equipment fails to keep up with the thermostat settings, it affects more than just the temperature; it impacts humidity levels, air quality, and your monthly utility expenses. Homeowners often tolerate loud operation, uneven heating, or constant cycling without realizing that these are indicators of imminent failure. Replacing a system is a significant decision, but it is often the most financially prudent path compared to sinking money into a dying unit.
Fully licensed and insured, with flexible financing options available to suit your budget.
Investing in a new HVAC system provides benefits the moment the unit is powered on. Older systems, particularly those installed more than a decade ago, operate on outdated technology that consumes excessive electricity and fuel. Modern systems are designed with higher SEER2 (Seasonal Energy Efficiency Ratio) ratings and AFUE (Annual Fuel Utilization Efficiency) percentages. This means more of the energy you pay for is converted directly into heating or cooling for your living space, rather than being wasted as exhaust or thermal loss.
The scope of a full replacement generally includes the removal of the existing furnace, air conditioner, or heat pump, and the installation of matched equipment. A matched system ensures that the indoor coil and the outdoor condensing unit are designed to work together perfectly. This synchronization is vital for achieving the advertised efficiency ratings. When components are mismatched, the system struggles to reach temperature setpoints, leading to increased wear and tear on the compressor and blower motor.
New installations also address airflow issues that may have plagued your home for years. Modern variable-speed blowers run at different capacities depending on the demand. Instead of blasting air at full force and then shutting off—which creates hot and cold spots—these systems run longer at lower speeds. This constant circulation mixes the air more effectively, eliminating stagnant pockets in upstairs bedrooms or basements and keeping the temperature consistent throughout the entire home.

A professional installation involves much more than simply swapping out one box for another. The process begins with technical planning to ensure the new infrastructure supports the specific needs of your property.
The first step is performing a Manual J load calculation. This engineering calculation considers the square footage, insulation levels, window types, and orientation of the home. Sizing is critical; a system that is too large will cycle on and off too frequently, failing to remove humidity. A system that is too small will run continuously without ever reaching the desired temperature. This calculation ensures the selected unit handles the specific thermal load of the structure.
Technicians prepare the workspace to protect flooring and surrounding areas. This includes laying down drop cloths and ensuring a clear path to the utility room or outdoor pad. Safety switches and gas lines are inspected to ensure they meet current building codes before any new equipment is brought in.
The existing equipment is disconnected from electrical and fuel sources. Refrigerant is reclaimed from the old lines according to environmental regulations, preventing harmful chemicals from venting into the atmosphere. The old units are then removed from the premises for proper recycling or disposal.
The new furnace or air handler is positioned and leveled. If necessary, a new plenum—the box connecting the unit to the ductwork—is fabricated to ensure an airtight seal. The outdoor condenser is set on a stable pad, ensuring proper clearance for airflow. Copper refrigerant lines are brazed with nitrogen to prevent internal oxidation, a crucial step for the longevity of the new compressor.
High-voltage wiring is connected to the disconnect box, and low-voltage wiring is run to the thermostat. Many modern replacements include upgrading to a smart thermostat, which requires specific wiring configurations to enable Wi-Fi connectivity and remote monitoring capabilities.
Once the hardware is in place, the system is pressure-tested to check for leaks. A vacuum pump removes moisture and air from the lines before the factory-specified amount of refrigerant is added. Allegiance Heating & Air, LLC. technicians then perform a complete startup sequence, measuring static pressure, temperature split, and amp draw to verify the system is operating within manufacturer specifications.
Determining whether to repair a broken unit or invest in a new one is the most common dilemma homeowners face. While a repair might seem cheaper upfront, it is often a temporary patch on a failing system. There are clear indicators when replacement is the smarter financial move.
A general guideline used in the industry is the 50% rule. If the cost of the repair approaches or exceeds 50% of the value of a new system, replacement is recommended. Additionally, if the equipment is out of warranty, spending thousands on a compressor or heat exchanger is risky, as another component could fail shortly after.
The average lifespan of an air conditioner or heat pump is 10 to 15 years, while furnaces can last 15 to 20 years. If your AC unit utilizes R-22 refrigerant (Freon), replacement is almost always the correct choice. R-22 has been phased out due to environmental concerns, making it prohibitively expensive and difficult to source. Upgrading to a system that uses R-410A or newer refrigerants future-proofs your home against these scarcity issues.
If you have required multiple service calls in the last two years, the system has become unreliable — schedule service today. The cumulative cost of minor repairs—capacitors, contactors, blower motors—adds up quickly. A new system resets the clock, providing a warranty that covers parts for ten years, eliminating the fear of unexpected repair bills during the peak of summer or winter.
As mechanical parts wear out, they create more friction and resistance, requiring more electricity to do the same amount of work. If your utility bills have been steadily climbing despite normal usage, the system has lost its efficiency. New inverter-driven compressors and modulating gas valves adjust their output to match the weather, drastically reducing energy consumption compared to single-stage units from the early 2000s.
Operating HVAC equipment in Greenville, IN, presents specific challenges due to the regional climate. The area experiences cold winters where temperatures frequently drop between 20°F and 35°F, alongside warm, humid summers with highs reaching 85°F. This wide operational range demands a versatile system capable of handling both heating and cooling loads effectively.
With annual rainfall between 40 and 45 inches, humidity management is a priority. High indoor humidity can lead to mold growth and make the air feel warmer than it actually is, prompting homeowners to lower the thermostat and waste energy. Modern two-stage or variable-speed cooling systems are superior at dehumidification because they run for longer cycles at lower speeds, pulling more moisture out of the air than standard single-stage units.
Given the potential for freezing temperatures, the heating component of your HVAC system is a safety necessity. High-efficiency gas furnaces (90% AFUE and above) are strongly recommended for this region. These units utilize a secondary heat exchanger to extract heat from the exhaust gases that standard furnaces vent out of the roof. This ensures that for every dollar spent on natural gas or propane, nearly all of it goes toward heating the home.
Replacing an HVAC system involves electrical, gas, and venting work, all of which are governed by local building codes. Professional installers handle the acquisition of necessary permits to ensure the work is compliant. This is crucial for insurance purposes and the future resale value of the home. Unpermitted work can lead to fines or complications during a home inspection.
The longevity of a heating and cooling system is determined more by the quality of the installation than the brand of the equipment. Even the most expensive, top-of-the-line heat pump will fail prematurely if it is installed incorrectly. Issues such as improper refrigerant charge, poor ductwork sealing, or incorrect venting can reduce efficiency by up to 30% and lead to critical component failure.
Manufacturers strictly enforce warranty requirements. If a system is not installed by a licensed professional, the warranty is often voided. Professional installation ensures that the equipment is registered and that a paper record exists proving the unit was installed according to factory guidelines. This protection covers expensive parts like compressors and heat exchangers for a decade or more.
HVAC systems deal with high-voltage electricity, combustible gases, and high-pressure refrigerants. Improper handling of these elements poses fire hazards and carbon monoxide risks. Certified technicians have the training to test gas connections, verify venting draft, and ensure electrical connections are tight and grounded. This eliminates safety risks and protects the household.
A dedicated service provider does not disappear after the installation is complete. Establishing a relationship with a local installer means having access to priority service for future maintenance needs. Annual tune-ups are essential for maintaining efficiency, and having the original installer perform these checks ensures a consistent service history.
Choosing the right partner for your HVAC replacement ensures that your home remains comfortable through every season. We focus on technical precision and adherence to code, ensuring your investment delivers reliable performance for years to come — read our reviews online.
Upgrading your HVAC system is one of the most effective ways to improve comfort, reduce energy waste, and protect your home from seasonal extremes. With modern technology, efficient airflow management, and proper installation, your home becomes more comfortable and economical to operate year-round. For homeowners in Greenville, IN, partnering with a trusted expert ensures long-term reliability and optimal performance.
Ready to improve your home’s efficiency and comfort? Contact Allegiance Heating & Air, LLC. today to schedule your 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.
