Brand Certified
Allegiance Heating & Air
4.9(712 reviews)
Certified by Allegiance Heating & Air • May 17, 2026
Business Details
7201 US-150, Greenville, IN
47124, United States
Certified by Allegiance Heating & Air • May 17, 2026
(812) 923-4406
Certified by Allegiance Heating & Air • May 17, 2026
https://www.allegiancehvac.com/
Certified by Allegiance Heating & Air • May 17, 2026
About
Certified by Allegiance Heating & Air • May 17, 2026
HVAC ContractorAir Quality ConsultantHeating ContractorAir Conditioning Contractor
Since 2005, Allegiance Heating & Air has been a cornerstone of comfort in the Kentuckiana community. This family-owned and operated HVAC contractor specializes in comprehensive heating and cooling services, offering expert solutions from routine furnace and AC repairs to full-system installations. Their team of licensed journeymen is dedicated to ensuring your home remains a sanctuary of comfort year-round, delivering quality workmanship and peace of mind with every service call. Allegiance Heating & Air provides reliable, professional care to keep your systems running smoothly. Don’t wait for a breakdown — schedule your HVAC service today.
Details
- Onsite servicesAvailable
- Free street parkingAvailable
- Wheelchair accessible restroomAvailable
- Wheelchair accessible seatingAvailable
Location
Certified by Allegiance Heating & Air • May 17, 2026
Hours
Certified by Allegiance Heating & Air • May 17, 2026
Monday8:00 AM - 11:00 PM
Tuesday8:00 AM - 11:00 PM
Wednesday8:00 AM - 11:00 PM
Thursday8:00 AM - 11:00 PM
Friday8:00 AM - 11:00 PM
Saturday8:00 AM - 5:30 PM
Sunday8:00 AM - 5:30 PM
Reviews
4.9
712 reviews
5 stars
686
4 stars9
3 stars1
2 stars5
1 star
11
- MGMike Greene1 day ago5.0I had a great experience with Allegiance Heating and Air. The technicians were efficient, reliable and friendly. Their professional attitude made the whole HVAC service feel stress‑free, and I appreciated how quickly they handled my AC service.
- JJJudyApr 30, 20265.0My technician-Cannon- was very professional & extremely nice!!! Would like to request him as my technician on my next appointment 😊
- MJmimi jansonApr 29, 20265.0From the moment I called to schedule a service, the team was quick to respond and arrived right on time. The technician was professional, friendly, and clearly knowledgeable about my heating system. He explained the repair options in plain language and completed the job efficiently. I appreciated the reliable service and the fact that the work was done the same day. I would definitely recommend Allegiance Heating and Air for any residential HVAC needs.
- DSDenise SidebottomApr 20, 20265.0I was nervous at first because my AC broke in the middle of 80 degree weather which is strange for April, but Allegiance Heating and Air was incredibly prompt and professional. The technician arrived within an hour, explained the problem clearly, and completed the repair. The technician , Mr. Garrett Moon was a very nice and courteous young man. He found the problem and fixed it within a timely manner. I highly recommend them for any heating or cooling needs. I’ll definitely give them a call again should I ever have another issue, but hopefully not. Knock on wood 😁. Give them a call… you won’t be disappointed!
- BMBob MoreyApr 17, 20265.0From the moment I called Allegiance Heating and Air, the experience was seamless. The technician arrived exactly on time, was courteous and extremely professional, and explained the problem in plain language. They provided a clear and fair price, and the work was done promptly with attention to detail. I especially appreciated how clean they left the workspace and how quickly the HVAC repair was completed. Excellent service, great pricing, and a team you can trust for any air conditioning service or furnace repair. Highly recommended.
Frequently Asked Questions About Allegiance Heating & Air
Why does my indoor unit have ice on it?
The presence of ice on your indoor HVAC unit can be attributed to several factors. During the summer months, insufficient refrigerant levels may lead to the indoor unit freezing. This issue can manifest initially indoors but can extend to the outdoor unit if left unaddressed. To prevent this, regular annual maintenance is crucial. Our HVAC technicians will meticulously examine refrigerant levels to ensure they meet manufacturer specifications.
In winter, a frozen indoor unit may result from a lack of refrigerant, hindering the system's ability to defrost. Professional maintenance becomes especially important during this season to avoid such complications.
Control issues can also contribute to freezing during winter. When the HVAC system fails to defrost, the outdoor unit may freeze. Additionally, a dirty air filter can impede airflow, causing the indoor unit to freeze. These concerns can be mitigated through routine HVAC maintenance, where our technicians assess the functionality of system components and provide guidance on timely filter replacements.
Why does my unit give off a strange smell?
One common reason for an odd smell is the accumulation of dust on the heat exchanger. After prolonged periods of inactivity, dust settles on the heat exchanger. When the unit is turned on again, this accumulated dust is burned off, resulting in a distinct aroma. While not necessarily harmful, it can be bothersome. Routine HVAC maintenance is recommended to address this issue, allowing our technicians to inspect and clean the heat exchanger during regular service appointments.
However, a more serious concern is a cracked heat exchanger, which can emit a suspicious smell. Some individuals may be more sensitive to this odor than others. A cracked heat exchanger poses a significant risk as it can release exhaust fumes into the home, presenting a potential danger. If you suspect a cracked heat exchanger, it is imperative to seek professional assistance promptly. Regular HVAC maintenance becomes crucial in detecting and addressing such issues before they escalate.
Another source of unusual odors could be faulty electrical equipment within the HVAC system. When motors, transformers, or other electrical components fail, it may lead to the generation of smoke and an unpleasant smell. By adhering to a routine maintenance schedule, our HVAC technicians can identify potential issues with electrical components early on, providing timely warnings and making necessary repairs.
In summary, to ensure the safety and efficiency of your HVAC system, routine maintenance is essential. If you suspect that you may be in danger, contact your local fire department.
Why is my A/C not pushing air through my vents?
Several factors could contribute to your A/C not delivering air through the vents, and understanding these possibilities is key to resolving the issue effectively.
One prevalent reason for poor airflow is a malfunctioning blower motor. If the blower motor breaks down, it can hinder the circulation of air throughout your HVAC system. However, it's essential to note that issues with electrical components impacting the blower motor are also common culprits. Even if the blower motor appears to be the problem, the root cause might lie in the associated electrical components. Regular maintenance is crucial in identifying and rectifying potential malfunctions in these components before they lead to a complete breakdown.
Another potential cause is faulty ductwork. Problems such as holes in the ducts can divert air to unintended areas like the attic or crawlspace, resulting in reduced airflow to the living spaces. Additionally, disconnected or improperly designed and installed ductwork can contribute to the issue. Routine maintenance provides an opportunity for our HVAC technicians to inspect the ductwork, ensuring it is in good condition, properly connected, and designed for optimal airflow.
By investing in routine maintenance, you not only prevent unexpected breakdowns but also allow our technicians to proactively address potential issues with your A/C system.
Why does my furnace smell like it's burning after I turned it on?
The presence of an unusual odor from your HVAC unit can stem from various causes, and understanding these factors is crucial for maintaining a safe and comfortable indoor environment.
One common reason for an odd smell is the accumulation of dust on the heat exchanger. After prolonged periods of inactivity, dust settles on the heat exchanger. When the unit is turned on again, this accumulated dust is burned off, resulting in a distinct aroma. While not necessarily harmful, it can be bothersome. Routine HVAC maintenance is recommended to address this issue, allowing our technicians to inspect and clean the heat exchanger during regular service appointments.
However, a more serious concern is a cracked heat exchanger, which can emit a suspicious smell. Some individuals may be more sensitive to this odor than others. A cracked heat exchanger poses a significant risk as it can release exhaust fumes into the home, presenting a potential danger. If you suspect a cracked heat exchanger, it is imperative to seek professional assistance promptly. Regular HVAC maintenance becomes crucial in detecting and addressing such issues before they escalate.
Another source of unusual odors could be faulty electrical equipment within the HVAC system. When motors, transformers, or other electrical components fail, it may lead to the generation of smoke and an unpleasant smell. By adhering to a routine maintenance schedule, our HVAC technicians can identify potential issues with electrical components early on, providing timely warnings and making necessary repairs.
In summary, to ensure the safety and efficiency of your HVAC system, routine maintenance is essential. If you suspect that you may be in danger, contact your local fire department.
Why is my furnace not pushing air through my vents?
A common culprit is a malfunctioning blower motor. If the blower motor breaks down, it can impede the proper distribution of heated air. However, it's important to recognize that issues with electrical components affecting the blower motor are also frequent causes. Even if it seems like the blower motor is the problem, the underlying issue may lie in the associated electrical components. Routine maintenance is an effective preventive measure, allowing our HVAC technicians to inspect and test these components, providing warnings about potential malfunctions before a breakdown occurs.
Another potential source of the problem is compromised ductwork. Holes in the ducts can divert heated air to unintended areas such as the attic or crawlspace, resulting in inadequate warmth in the living spaces. Disconnected or improperly designed and installed ductwork can also contribute to this issue. Regular maintenance gives our HVAC technicians the opportunity to inspect the ductwork, ensuring it is in good condition, properly connected, and designed for optimal airflow.
Investing in routine maintenance not only helps prevent unexpected furnace issues but also allows our technicians to proactively address potential concerns.
Why is there water underneath my indoor unit?
One common culprit is a compromised condensate line. If your condensate line becomes clogged, often due to a lack of maintenance, it can result in water leakage. Regular annual maintenance is essential to prevent such issues. Our HVAC technicians can inspect and clear the condensate line, ensuring proper drainage and preventing water accumulation.
Another possible cause is a broken drain pan, which can occur accidentally, especially if there has been rough handling by children or pets. A damaged drain pan can lead to water leakage around the indoor unit. While this issue may seem minor, it's important to address it promptly to avoid further complications.
Water underneath the indoor unit could also be an indicator of potential freezing issues. In the summer, insufficient refrigerant levels can cause the indoor unit to freeze, with the problem potentially extending to the outdoor unit if left unattended. In winter, a lack of refrigerant prevents the system from defrosting, leading to freezing. Routine HVAC maintenance is crucial to address refrigeration issues. Our technicians will assess refrigerant levels, ensuring they meet manufacturer specifications.
Control issues in winter can also result in the HVAC system being unable to defrost, leading to a frozen outdoor unit. A dirty air filter can further contribute to the indoor unit freezing. Both issues can be avoided with proper HVAC maintenance, where our technicians check system operations and guide you on timely filter changes.
How long does it take to install an HVAC system?
On average, the installation of an HVAC system typically takes around one day. However, the duration can vary based on the specific requirements of the job. If the installation involves tasks such as ductwork, the timeline may extend beyond a single day. The overall duration also depends on the size and complexity of the project.
Why do I smell gas from my HVAC system?
The presence of a gas odor around your HVAC unit could indicate piping corrosion, allowing gas to escape from the pipes. Alternatively, a mechanical malfunction may be contributing to the issue. It is crucial to address this situation promptly and seek professional assistance. If you detect a gas odor and feel it poses a danger, prioritize your safety by calling the fire department and evacuating the premises. Once you feel there is no danger, contact your local HVAC professional.
What should I do if I smell gas from my HVAC system?
It is crucial to address this situation promptly and seek professional assistance. If you detect a gas odor and feel it poses a danger, prioritize your safety by calling the fire department and evacuating the premises. Once you feel there is no danger, contact your local HVAC professional.
Why is my A/C not cooling?
One common reason is low refrigerant levels, which can hinder the system's cooling capacity and even lead to the freezing of the indoor unit. Routine HVAC maintenance is a proactive solution to this issue. During regular service appointments, our technicians check refrigerant levels, ensuring your system is adequately charged to keep your home comfortably cool.
Regular maintenance is paramount for the overall health of your HVAC system. Similar to your car, an HVAC system requires routine cleaning and professional attention. Without regular maintenance, wear and tear can accumulate, jeopardizing the system's efficiency. By neglecting maintenance, you may experience diminished cooling performance. Our technicians are dedicated to performing routine cleaning and checks, ensuring your system operates at its best.
Mechanical malfunctions can also contribute to cooling issues. The HVAC system relies on various components, and if one fails, it can result in the entire system shutting down. Regular maintenance becomes the linchpin for a healthy and comfortable home. Technicians test these components during maintenance visits, identifying potential issues before they lead to a complete breakdown.
Why is my furnace not heating?
Low refrigerant levels may impact the system's ability to heat, especially in the case of systems equipped for both heating and cooling. This deficiency can hinder the defrosting process for the outdoor unit and may lead to the freezing of the indoor unit. Regular HVAC maintenance is a proactive approach to prevent such issues. Our technicians meticulously check refrigerant levels during routine service appointments, ensuring your system is well-prepared to efficiently heat your home.
For those with gas furnaces, issues with the gas supply can contribute to heating problems. It's essential to check your propane tank and ensure adequate gas levels. If levels appear low, contact your gas provider for replenishment.
Similar to your car, an HVAC system requires regular maintenance for optimal functionality. Without routine cleaning and professional attention, wear and tear may accumulate, hindering the system's ability to keep your home comfortable. Neglecting regular maintenance can lead to diminished heating performance. Our skilled technicians are committed to performing routine checks and cleaning, ensuring your system operates at its best.
Mechanical malfunctions are another potential cause for heating issues. The HVAC system relies on various components, and a failure in one part can result in a complete system shutdown. Regular maintenance plays a pivotal role in identifying potential issues before they escalate into a no-heat situation.
How do I add heating and cooling into my garage?
The optimal solution for introducing both heating and cooling to your garage is to consider a mini-split system. It's important to note that incorporating your home's existing HVAC system into the garage is not advised due to safety regulations. Garages often contain gas and combustible materials, making it against code to extend the home's HVAC system to this space. Choosing a mini-split system eliminates this concern.
A mini-split system is a ductless HVAC solution. While traditional systems rely on a network of ducts to distribute air, mini-splits use individual air handling units to provide heating and cooling to specific areas or rooms. There are various styles available to suit different preferences and needs. High wall models mount directly to interior walls, console units are versatile for various room configurations, and in-ceiling or cassette unit designs offer space-saving alternatives, either flush-mounted or installed high above eye level.
Opting for a mini-split system ensures efficient climate control in your garage without compromising safety or violating building codes.
How often should I be changing my HVAC filter?
The frequency of HVAC filter changes can vary based on individual building and home environments. Factors such as the presence of hairy pets may necessitate more frequent filter changes compared to other households. As a general guideline, we typically recommend monthly filter changes for the average customer in the Ohio Valley region. This helps ensure optimal performance and efficiency of your HVAC system, keeping your indoor air quality at its best.
Why is my thermostat blank?
A blank thermostat screen typically indicates an electrical malfunction, which could be attributed to issues with the HVAC equipment, the breaker, or the thermostat itself. To prevent such occurrences, regular preventative maintenance is crucial. This ensures that a professional can inspect and test all electrical components, verifying their safety and operational status. Investing in routine maintenance helps identify potential issues early on, promoting the reliability and longevity of your HVAC system.
What heating and air conditioning services does Allegiance Heating & Air offer?
Allegiance Heating & Air offers a full range of services including repair, maintenance, installation, and replacement of air conditioners, furnaces, heat pumps, air handlers, ductless HVAC, mini split systems, PTAC units, humidifiers, dehumidifiers, UV lights, ionizers, energy recovery ventilators (ERVs), filters, and thermostats.
How can I contact Allegiance Heating & Air for HVAC service?
You can contact Allegiance Heating & Air by calling +1 812-923-4406 or by emailing admin@allegiancehvac.com. More information is also available on their website at https://www.allegiancehvac.com/.
What are the business hours of Allegiance Heating & Air?
Allegiance Heating & Air is open Monday through Friday from 8:00 AM to 11:00 PM, and on Saturday and Sunday from 8:00 AM to 5:30 PM. Customer service representatives are available after hours as well.
How often should I change my HVAC filter to maintain efficiency?
It is generally recommended to change your HVAC filter monthly, especially if you have pets, to ensure optimal performance and indoor air quality. This may vary depending on your specific environment.
Why does my indoor HVAC unit have ice on it and how can Allegiance Heating & Air help?
Ice on the indoor unit can be caused by low refrigerant levels, control issues, or dirty air filters. Regular maintenance by Allegiance Heating & Air's licensed technicians can diagnose and fix these problems, ensuring proper refrigerant levels and system operation.
Why might my furnace or A/C not be pushing air through the vents?
Common reasons include malfunctioning blower motors, electrical component issues, or compromised ductwork such as holes or disconnections. Allegiance Heating & Air can perform inspections and repairs during routine maintenance to restore proper airflow.
What should I do if I smell gas coming from my HVAC system?
If you detect a gas smell, it could be due to piping corrosion or mechanical malfunction. Prioritize your safety by evacuating and calling the fire department immediately. After the area is safe, contact Allegiance Heating & Air for professional HVAC inspection and repair.
What nearby cities does Allegiance Heating & Air serve?
Allegiance Heating & Air serves several cities including Floyds Knobs, Georgetown, Greenville, Jeffersonville, Louisville, New Albany, St Matthews, Clarksville, and Sellersburg in the Indiana and Kentucky region.
Are there any nearby places where I can find additional services or amenities when visiting Allegiance Heating & Air?
Yes, nearby places include the Greenville Fire Department Station 2 for emergency services, Carr's BBQ & Market if you're seeking local dining, and MainSource Bank for financial services. These locations can be helpful when visiting or waiting during service appointments.
How can I find Allegiance Heating & Air and what local amenities are nearby?
Allegiance Heating & Air is located at 7201 US-150, Greenville, IN 47124. Nearby you can find community-focused places like RISE Academy of Lifelong Learning and Redeeming Vine Baptist Church, which might be helpful if you have family or community interests while visiting.
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