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Allegiance Heating & Air

4.9
(735 reviews)

Business Details

7201 US-150, Greenville, IN
47124, United States
(812) 923-4406
https://www.allegiancehvac.com/

About

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

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

Hours

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

Products & Services

1 list · 11 items

Explore offerings from Allegiance Heating & Air on 7201 US-150 in Greenville, with popular services available at this location.

Services

11 items

Services

Air Conditioner Filter Replacement
Air Conditioner Installation
Air Conditioner Maintenance
Air Conditioner Repair
Air Conditioner Replacement
Air Conditioner Services
Ductless Air Conditioner Installation
Furnace Maintenance
Furnace Repair
Furnace Replacement
UV Light Installation

Reviews

4.9
735 reviews
5 stars
708
4 stars
9
3 stars
1
2 stars
6
1 star
11
  • BH
    Barbara Henckel
    4 days ago
    5.0
    Harley and Blake are very knowledgeable on installing HVAC systems.
  • RM
    Rick Merryweather
    Jul 20, 2026
    5.0
    Kaden was very clear on explanation and professional, for a young lad. Wish him success.
  • TB
    Tami Berry
    Jul 16, 2026
    5.0
    Allegiance Heating & Air was honest, prompt and friendly. They arrived on time, diagnosed the issue quickly and fixed our AC with affordable pricing. The service was efficient and I felt confident in their expertise. If happiness had a location on Google Maps, it would be here. I highly recommend them for any HVAC repair or air conditioning service.
  • MA
    Meribeth Adams-Wolf
    Jul 10, 2026
    5.0
    Allegiance tech was able to come the same day. Was able to fix AC that another company said was caput. Our technician was Gilbert and we can’t say enough great things about him! Super friendly but so knowledgeable and efficient. He talked us through what he was doing and he made every effort to get us back up and running! Even late in the day on a Friday he was nice and so helpful. We won’t hesitate to call on them for future service. We would highly recommend Gilbert as he was knowledgeable about older systems. Thank you so much Gilbert and Allegiance!
  • NW
    Niki Worrall
    Jul 6, 2026
    5.0
    Cannon was the tech that arrived and he was awesome! I was extremely impressed with Allegiance Heating and Air. Their responsiveness and clear communication made the whole process easy, and Cannon was professional, reliable, and arrived right on time. The work was done efficiently and the he treated my home with respect, showing true professionalism. I’m looking forward to calling them for my next HVAC service.

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.

Brand Certified Facts from Allegiance Heating & Air

This information is certified by Allegiance Heating & Air and published from the brand's official system of record. Data is distributed through an enterprise-grade knowledge management platform. Learn more about our data sources
Certified July 26, 2026Yext Knowledge Graph
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