Allegiance Heating & Air: Your Local HVAC Experts in Greenville, IN

Allegiance Heating & Air Photos

Allegiance Heating & Air Introduce

For residents across Indiana, especially in the Greenville area, a reliable heating and air conditioning system is not just a convenience—it's a necessity for comfort and safety. From the humid, hot summers to the biting cold of winter, your home's HVAC system works tirelessly to maintain a comfortable indoor environment. When it falters, you need a general contractor you can trust to provide a quick, professional, and lasting solution. Allegiance Heating & Air has established itself as a premier HVAC contractor in the region, known for its expertise, commitment to quality, and outstanding customer service. They are more than just a business; they are a dedicated team that goes above and beyond to ensure your heating and cooling needs are met with precision and care. This article will provide an in-depth look at what makes Allegiance Heating & Air a top choice for both homeowners and businesses in Southern Indiana, exploring their comprehensive service offerings, their unique features, and the glowing testimonials that speak to their integrity and skill.

Choosing an HVAC company can be a challenge, particularly when you need custom solutions for your home. Allegiance Heating & Air stands out by offering not only standard services but also possessing the fabrication skills to handle complex projects, as one customer noted with their custom ductwork. Their philosophy is centered on building lasting relationships with their clients, providing services that are not just a transaction but a commitment to your long-term comfort. They are a business that cares, and this is evident in their willingness to diagnose and repair even the most nuanced issues to perfection. As you read on, you will learn about the wide array of services they offer, from geothermal systems to air quality testing, and discover why their service agreement is considered "well worth the money" by their loyal customers.

Allegiance Heating & Air is conveniently located at 7201 US-150, Greenville, IN 47124, USA. This strategic location provides easy access for residents throughout Greenville and the surrounding Southern Indiana communities. Their placement on a major thoroughfare ensures that their team can quickly and efficiently respond to service calls, whether they are for a scheduled maintenance visit or an emergency repair. The accessibility of their office, which includes features like wheelchair-accessible restrooms and seating, as well as gender-neutral restrooms, reflects a commitment to a welcoming and inclusive environment for all who interact with their business. The availability of free street parking further adds to the convenience for customers who may need to visit the location for a consultation or a quick question.

This local presence and accessibility are a significant advantage for customers, as they signify a company that is an active and integrated part of the community. They are not a distant corporation but a nearby business ready to serve their neighbors with professionalism and care. The quick response times, as highlighted in customer reviews, are a direct result of their local focus and commitment to being there for clients when they are needed most. Their location and the amenities they offer demonstrate a thoughtful approach to customer service, ensuring a positive experience from the moment of contact.

Allegiance Heating & Air offers an extensive and versatile range of services, catering to nearly every heating, cooling, and air quality need for both residential and commercial properties.

Services Offered:

HVAC Maintenance: Comprehensive maintenance programs, including boiler maintenance, furnace maintenance, and AC maintenance, to ensure your systems are running efficiently year-round.
Heating and Cooling Installation: Professional installation of new furnaces, boilers, heat pumps, ductless mini-split AC units, and full HVAC systems for new constructions and replacements.
Repair Services: Expert AC repair, furnace repair, boiler repair, and general HVAC emergency repair services to quickly resolve any issues.
Air Quality Solutions: Services including whole-house humidifiers, whole-house dehumidification, whole-house air filtration, whole-house air purifiers, and professional home air quality tests.
Geothermal HVAC Service: Specialized expertise in the installation and maintenance of energy-efficient geothermal heating and cooling systems.
Thermostat Replacement: Installation of new and smart thermostats to provide better temperature regulation and energy savings.
Commercial HVAC: Dedicated services for commercial buildings, including new installations and ongoing maintenance and repair of HVAC systems.
Ductless Systems: Installation of ductless mini-split AC and heating systems for flexible, zoned climate control.

The features and highlights of Allegiance Heating & Air are what truly set them apart from the competition. Their unwavering commitment to quality and customer care is a recurring theme in all their reviews.

Features / Highlights:

Talented and Professional Team: Customers consistently praise the "talented team" and technicians like Pete and Gilbert for their professionalism, knowledge, and kindness. They are not just skilled; they are also personable and committed to doing the job right.
Custom Fabrication Skills: One of the standout features is their ability to perform "custom fabrication" for installations, ensuring a perfect fit and a professional look, even when dealing with mismatched or older systems. This skill demonstrates a high level of expertise and attention to detail.
Above and Beyond Service: The company is known for its commitment to "diagnosing and repairing to perfection" and going "above and beyond." This dedication to thoroughness ensures that even complex, nuanced issues are fully resolved.
Valuable Service Agreements: The service agreement is mentioned as being "well worth the money," indicating that their maintenance plans provide significant value and peace of mind for customers.
Commitment to Customer Satisfaction: A deep-rooted belief in "businesses that care" is a core value for Allegiance Heating & Air. The team's willingness to spend extra time helping customers with complex issues and their overall commitment to ensuring a positive experience fosters a strong sense of trust and loyalty.
Broad Expertise: Their services extend beyond basic HVAC, covering a wide range of needs from geothermal systems and whole-home air quality solutions to commercial HVAC and boiler work. This versatility makes them a comprehensive partner for all your climate control needs.

For all your heating and air conditioning needs, you can easily get in touch with Allegiance Heating & Air. Their office is located at 7201 US-150, Greenville, IN 47124, USA. To speak with a representative or to schedule a service, you can call their phone number: (812) 923-4406. For your convenience, their mobile phone number is also listed as +1 812-923-4406.

What makes Allegiance Heating & Air the clear choice for residents in Indiana? It's their unique combination of expert craftsmanship and a heartfelt commitment to customer care. They are a company that doesn't shy away from complex jobs and has the skills to provide custom, professional solutions. The fact that they go the extra mile to fully resolve issues, even when faced with pre-existing problems from other systems, is a testament to their dedication to perfection. When you choose Allegiance, you are not just hiring a contractor; you are partnering with a team that genuinely cares about your comfort and satisfaction. Their valuable service agreements, transparent practices, and talented technicians make them a standout in the industry. For anyone in the Greenville area and beyond seeking reliable, honest, and high-quality HVAC service, Allegiance Heating & Air is a company you can trust to get the job done right.

Allegiance Heating & Air Air conditioning

Air Conditioning Contractor
AC Maintenance
Keep your air conditioner running efficiently with AC maintenance from Allegiance Heating & Air in Greenville, IN. Our detailed inspections and tune-ups help prevent breakdowns, lower energy bills, and extend system life—ensuring year-round cooling and peace of mind.
AC Replacement
If your AC is outdated or constantly breaking down, Allegiance Heating & Air offers professional AC replacement in Greenville, IN. We’ll help you choose the right energy-efficient system to improve cooling, lower utility bills, and keep your home comfortable year-round.
Ac Installation
Allegiance Heating & Air provides expert AC installation in Greenville, IN for homes and businesses. We install energy-efficient systems tailored to your space for maximum comfort and savings. Count on our licensed technicians for fast, clean, and reliable air conditioning setup.
Ac Repair Services
Ac Replacement
Ductless AC
Allegiance Heating & Air installs and services ductless AC systems in Greenville, IN. These energy-efficient units provide zoned cooling without traditional ductwork—ideal for room additions, garages, or older homes. Enjoy flexible comfort and lower energy costs today.
Ductless Mini Split AC
Allegiance Heating & Air installs ductless mini split AC systems in Greenville, IN for efficient, quiet, and zoned cooling. Perfect for homes without ducts or rooms that need individual climate control. We handle installation, repairs, and ongoing service you can trust.

Air Conditioning Repair Service
AC Repair
Get fast, reliable AC repair in Greenville, IN with Allegiance Heating & Air. Our certified technicians diagnose and fix all AC issues—no matter the brand or system type. We restore cool air quickly, ensuring your home stays comfortable and energy-efficient all summer long.

Heating Contractor
Boiler Maintenance
Ensure your boiler runs safely and efficiently with scheduled maintenance from Allegiance Heating & Air in Greenville, IN. We clean, inspect, and tune up your system to prevent breakdowns, improve heating performance, and extend your boiler’s lifespan.
Boiler Repair
If your boiler is making noise, leaking, or not heating properly, call Allegiance Heating & Air in Greenville, IN. Our skilled technicians offer expert boiler repair to restore heat quickly. We work on all makes and models and provide 24/7 emergency service.
Ductless Heater
Enjoy efficient, zoned heating with ductless heater systems from Allegiance Heating & Air in Greenville, IN. Perfect for spaces without ductwork, these systems offer flexible comfort, quiet operation, and lower energy bills. Expert installation and service available.
Furnace Installation
Allegiance Heating & Air provides professional furnace installation in Greenville, IN. We help you choose the right high-efficiency unit and handle expert setup to ensure reliable heating, lower utility bills, and long-term comfort during Indiana’s cold winters.
Furnace Maintenance
Keep your furnace performing at its best with annual maintenance from Allegiance Heating & Air in Greenville, IN. Our thorough tune-ups improve energy efficiency, reduce the risk of breakdowns, and extend the lifespan of your heating system. Schedule today.
Furnace Replacement
When it’s time to upgrade your old furnace, trust Allegiance Heating & Air for expert furnace replacement in Greenville, IN. We install top-rated, energy-efficient systems to ensure consistent comfort, improved safety, and reduced heating costs in your home.
Heating Installation
Need a new heating system? Allegiance Heating & Air installs high-performance furnaces, heat pumps, and more in Greenville, IN. We tailor your system for maximum efficiency, comfort, and reliability to get you through the winter with ease and confidence.
Heating Repair
Allegiance Heating & Air offers fast, dependable heating repair in Greenville, IN. Whether it’s a furnace, heat pump, or boiler, we fix all systems to restore comfort quickly. Don’t wait in the cold—call our expert team for 24/7 emergency heating service.
Heating Replacement
Upgrade your heating system with Allegiance Heating & Air in Greenville, IN. We offer professional heating replacement services that improve energy efficiency, comfort, and indoor air quality. Ideal for aging or failing systems that need reliable performance.
Heating Technician
Looking for a trusted heating technician in Greenville, IN? Allegiance Heating & Air has certified experts ready to help with installation, repair, and maintenance of furnaces, heat pumps, boilers, and more. We deliver honest, reliable, and fast heating service.

HVAC Contractor
Commercial HVAC
Keep your business running comfortably year-round with commercial HVAC services from Allegiance Heating & Air in Greenville, IN. We specialize in the installation, repair, and maintenance of large-scale HVAC systems for offices, retail stores, and industrial spaces.
Geothermal HVAC Service
Go green with geothermal HVAC service from Allegiance Heating & Air in Greenville, IN. We install and maintain eco-friendly systems that use the earth’s natural temperature to heat and cool your home efficiently. Enjoy quiet, consistent comfort with our expert geothermal solutions.
HVAC Emergency Repair
When your heat or AC stops working unexpectedly, Allegiance Heating & Air offers 24/7 emergency HVAC repair in Greenville, IN. Our technicians respond quickly to diagnose and fix the problem—restoring comfort and safety to your home or business. Don’t wait in discomfort—call our trusted team.
HVAC Installation
Whether you're building a new home or replacing an outdated system, Allegiance Heating & Air provides expert HVAC installation in Greenville, IN. We install energy-efficient systems customized to your space for maximum performance and savings.
HVAC Maintenance
Keep your system running at peak performance with scheduled HVAC maintenance from Allegiance Heating & Air in Greenville, IN. Our tune-ups help prevent costly breakdowns, extend system life, and improve energy efficiency.
Heat Pump Systems
Get year-round comfort with energy-efficient heat pump systems from Allegiance Heating & Air in Greenville, IN. We provide expert installation, repair, and maintenance for both residential and commercial properties.
Home Air Quality Test
Protect your home and loved ones with a comprehensive home air quality test from Allegiance Heating & Air in Greenville, IN. Our experts check for allergens, mold, VOCs, humidity issues, and airborne pollutants. Based on the results, we offer tailored solutions to enhance indoor air quality.
Mini Split Heat Pumps
Allegiance Heating & Air installs and services mini split heat pumps in Greenville, IN, offering high-efficiency, ductless heating and cooling. Ideal for homes without ductwork, these systems provide zoned comfort, energy savings, and year-round climate control.
Residential HVAC
Allegiance Heating & Air delivers full-service residential HVAC solutions in Greenville, IN. From new installations to fast repairs and routine maintenance, we help keep your home comfortable in every season. Our expert team works with all major brands and provides honest recommendations.
Thermostat Replacement
Upgrade your HVAC system with smart or programmable thermostat installation by Allegiance Heating & Air in Greenville, IN. We install the latest thermostats designed for precise temperature control, energy efficiency, and convenience.
Whole Home Humidifiers
Dry air can cause discomfort, allergies, and static electricity. Allegiance Heating & Air installs whole-home humidifiers in Greenville, IN, to restore healthy humidity levels throughout your space. Our systems help protect wood furniture, reduce respiratory issues, and enhance overall comfort.
Whole House Air Filtration
Breathe cleaner, healthier air with whole-house air filtration solutions from Allegiance Heating & Air in Greenville, IN. Our advanced systems capture dust, allergens, pet dander, and other airborne particles throughout your home. We help you create a safer, allergy-friendly environment.
Whole House Air Purifier
Allegiance Heating & Air offers whole house air purifiers to eliminate airborne viruses, bacteria, smoke, and odors in your Greenville, IN home. Our systems work with your HVAC unit to continuously clean the air, improving indoor health and comfort.
Whole House dehumidification
Protect your home from excess moisture with whole house dehumidification by Allegiance Heating & Air in Greenville, IN. Our systems reduce humidity levels, helping prevent mold, mildew, and musty odors. Enjoy a more comfortable, healthier indoor environment.

Furnace Repair Service
Furnace Repair
When your furnace fails, trust Allegiance Heating & Air in Greenville, IN for fast and affordable repair. We service all furnace brands and provide 24/7 emergency support. Restore warmth and comfort to your home with expert diagnosis and reliable repair work.

Allegiance Heating & Air Details

Service options
Onsite services
Online estimates
Language assistance

Accessibility
Wheelchair accessible restroom
Wheelchair accessible seating

Offerings
Repair services

Amenities
Gender-neutral restroom

Parking
Free street parking

Allegiance Heating & Air Location

Allegiance Heating & Air

Indiana Floyd County Greenville U.S. 150

7201 US-150, Greenville, IN 47124, USA

Allegiance Heating & Air Reviews

An average rating of ★4.9 from 614 user reviews.

technicianfurnacejobinformativecallsecond opiniondiagnosedplanservice chargebasement

★ 5★ 4★ 3★ 2★ 1

They brought out a talented team to install my Goodman AC system. It took some custom fabrication to join the new Goodman indoor A coil to my existing duct work. They also had to remove an old humidifier from the duct work. Looks very professional. I’m impressed with their fabrication skills. The reason for replacement was that my 15 year old Rhem system had a failed compressor. All nice and cool in the house now!
Jul 03, 2025 · 1 E2Werks
I’m extremely grateful to these guys. Transferring our old outdoor units over to the allegiance brand caused some minor issues to our indoor system due to prior set up with our old units. Allegiance was very committed to diagnosing and repairing it to perfection. The service agreement is well worth the money. The time they spent helping us was above and beyond. I know it’s just an HVAC company, but I’m very excited to keep doing business with them. I love businesses that care. Pete and Gilbert were great!
Sep 03, 2025 · Brandon Hopf
Gilbert was very courteous, very respectful and informative. Easy to understand and work with. John and Tim preformed the installation they were professional and efficient. They did a great job in a timely manner. I was impressed with their workmanship. Overall very pleased with them.
Jul 22, 2025 · Carolea Stroud
We realized that we needed a new system and called Allegiance. Lucas quickly came out and tested our system. He thoroughly described the various possibilities for replacing our system and did so in a very professional and informed manner. After deciding on our system, Lucas scheduled our installment and kept us updated.Our new system was installed by Carson and Chase. They also were very professional and knowledgeable about our system and were also very competent. They did a fantastic job, and the installment looks great. We appreciate Allegiance and their excellent work!
Jul 09, 2025 · Eddie and Sherry Woods
The company in general and especially the technician, Gilbert, were wonderful! He was knowledgeable, courteous and efficient, plus didn't try to upsell me which I really appreciate. He also brought his own booties and wore them to keep from tracking dirt in my house. Sadly I still had to pay the service call fee of $125 even though I had accidentally already fixed the problem, but better safe than sorry.
Aug 22, 2025 · Sharon Handy