Allegiance Heating & Air

4.9
649 reviews
Allegiance Heating & Air service van

About

HVAC ContractorAir Quality ConsultantHeating ContractorAir Conditioning Contractor
Serving the Kentuckiana community since 2005, Allegiance Heating & Air provides trusted, family-owned comfort solutions. As a dedicated HVAC contractor, their team of licensed, highly qualified journeymen specializes in expert heating and cooling services, from furnace and AC repair to complete installations. Allegiance Heating & Air is committed to delivering quality and peace of mind with every service, ensuring your home remains a sanctuary of comfort. Don’t wait for a breakdown — schedule your HVAC service today.

Details

  • Onsite servicesAvailable
  • Free street parkingAvailable
  • Wheelchair accessible restroomAvailable
  • Wheelchair accessible seatingAvailable

Location

Allegiance Heating & Air
7201 US-150, Greenville, IN
47124, United States

Hours

Reviews

4.9
649 reviews
5 stars
625
4 stars
8
3 stars
1
2 stars
4
1 star
11

What are people saying?

AI-generated from recent customer reviews

Service Quality

Customers consistently praised the professionalism, knowledge, and friendliness of the technicians, highlighting their thorough explanations and efficient service.

Timeliness

Many reviews noted the promptness of service, with technicians often arriving on the same day and completing jobs in a timely manner.

Customer Satisfaction

Overall, customers expressed high levels of satisfaction with their experiences, frequently recommending Allegiance to others and mentioning long-term relationships with the company.

Communication

Customers appreciated the clear communication from both technicians and office staff regarding service details, scheduling, and follow-ups.

Value for Money

While some customers mentioned concerns about pricing, many highlighted the reasonable rates and value of the service agreements offered.
  • BB
    butch burnett
    6 days ago
    5.0
    Been using Allegiance for 20 years Great company thanks guys👍
  • DN
    Dottie Nelson
    Nov 15, 2025
    5.0
    Very friendly technician who changed my filter and checked everything out. Very pleased with the service.
  • NP
    Nathan Patterson
    Nov 7, 2025
    5.0
    The crew was very professional and exceptional! I would highly recommend Allegiance for any HVAC work you need!
  • BA
    Bryan Altsman
    Nov 6, 2025
    5.0
    Outstanding service and installation! Their crew (Brayden, Camden and Chase) were very professional, polite and first class. I strongly recommend using Allegiance heat and air for your HVAC needs. Thank you!!
  • SW
    Steve Worland
    Nov 5, 2025
    5.0
    Replaced our HVAC system (A/C on the roof and furnace in the garage) with Allegiance while replacing the roof this summer. Garrett sized our system and recommended the perfect components for our needs. The installation teams coordinated timing and all activities with our property manager while we were out of town on vacation. We are totally satisfied with Allegiance, and their customer service team. Responsive, prompt, and thorough are what we got by working with this company. I recommend Allegiance to anyone shopping for HVAC.

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.