Upgrade your home's comfort with Appel Heating & Air Conditioning, the leading HVAC company in Hamilton County and the Northside of Indianapolis. With over 20 years of experience, our certified HVAC contractors specialize in top-notch heating and cooling services, including air conditioner installation, gas furnace repair, boiler maintenance, and air quality solutions. Serving Carmel, Indiana, and nearby areas, we deliver custom-fitted HVAC installations tailored to your home's specific requirements. Trust Appel Heating & Air Conditioning for expert HVAC services in Carmel and the surrounding regions. Contact us today for reliable, high-quality HVAC solutions that enhance your home's comfort.
Customers consistently praised the professionalism and knowledge of the technicians, highlighting their courteous and thorough service.
Timeliness
Many reviews noted the promptness of service, with technicians arriving on time and completing work efficiently.
Customer Trust
Appel has built a strong reputation for honesty and reliability, with numerous customers expressing satisfaction with the company's transparency and fair pricing.
Long-term Relationships
Many customers have been loyal to Appel for years, indicating a high level of satisfaction with ongoing service and maintenance.
Quality of Work
While most feedback is positive, there are some concerns about installation quality and accountability for past work, suggesting a need for improvement in these areas.
TR
Tom Ridder
6 days ago
1.0
Tried to scam me on replacement and it turns out just misdiagnosed the real problem!! Very disappointed
MD
Michael Dull
6 days ago
5.0
Appel team was professional, courteous, arrived on time and very happy with completed furnace installation project
PH
Pam Huebschman
6 days ago
5.0
Technician was very pleasant, efficient, timely and explained everything he did, what items he checked and what he found. Our furnace working properly. One of the best technicians we have had the privilege to interact with.
MF
Marian Fahy
Nov 7, 2025
5.0
I was ready to purchase a new furnace based on information from other HVAC companies. I appreciate the advice from Jeff in the office and the diagnostic testing done by Otis to assure me that my furnace is just fine and didn't need expensive repairs or a new furnace. I highly recommend Appel for their excellent customer service and work.
CM
Carlos May
Oct 29, 2025
1.0
I have used Appel more than once and have spent well over $6000 with them. I had them install a new radiant heat system in an addition for me, they have replaced literally every part on my furnace, and I have had them do normal service calls for maintenance. I have always been happy with their work until this time.
I will start by saying this review is not based on any one individual.
I originally called them on July 15th because my Expansion Tank for the boiler developed a hole in the side of the tank (not on any seam or connection point...literally a hole appeared straight through the metal wall) and was spraying water everywhere. On that call I was asked to send them a video after I described the situation. I sent it and he called back a couple of minutes later and stated (almost verbatim) "I have never seen anything like that and neither has the tech I showed it to". He then told me that the part was still under warranty and he would call back to let me know what would be done. I never got a call back.
On October 20th I finally had enough of waiting and called them again. This time a woman answered, I explained the situation and she had no personal knowledge of that first call so she stated she would call me back once she got more information from their files. She called back within the hour and stated that she had found the video I sent it and watched it and that she showed it to another tech but there was no other notation on my file. She then stated the first available appointment was on the 29th (today). I was then told that they would first send a tech to diagnose the issue then return the next day to do the work. I told her that was an unnecessary step as 3 people had already viewed the video and it was clear that there was a hole and water was shooting out of it. She said that was their process and they would have to first diagnose the issue. I told her fine, send the tech but ALSO to go ahead and bring a new expansion tank as the tech would obviously see what the video shows.
The tech arrived today (also a great guy and very nice) and saw the hole, I then showed him the video and then he states "why didn't they send the tank with me" to which I responded that I had no idea. He immediately went to call his manager, we waited 10 minutes and the manager did not call back, so then the tech said he would try again. The tech then mentioned that the manager did not call but did send a text. The tech then told me that someone would call me back later today to discuss next steps. The tech then mentioned that there was a $100 service fee I had to pay. I told him I would not be paying at that exact moment and that I would gladly explain to the manager when he or she called me.
A manager did call me at 5:29pm and the first thing he said was that the service fee was still due. After explaining everything to him (that I have just written here) and that I would not pay that fee as at least 3 different people in that company had viewed the video I sent them and that the tech didn't diagnose anything today his response was that it was "better if we no longer did business together" so basically fired me as a customer. I asked him if he thought it was acceptable for a company to not reach out to a long time customer for over 3 months and he did admit that was not good service. I then asked why they would not have sent out a replacement tank to do the work (that was obvious to all who had seen the video and to the tech that arrived today) and he stated it was because often times a customer is wrong about the problem and they do not want to purchase parts and then "get stuck with them" (his exact words). That is a valid explanation but I know I am not the only person in Indianapolis with a boiler system that might need a new tank. I looked up the price of this tank and it is $45. Even if there had been another issue with my boiler aside from the tank it was obvious that the tank was defective and would have to be replaced. Poor Customer Service this time.
Frequently Asked Questions About Appel Heating & Air Conditioning
Do you offer financing options?
Yes! We realize there’s not always room in the budget for a brand new furnace or air conditioner, especially if that’s an expense you weren’t expecting. But a reliable HVAC system is one of the most important investments you can make for the comfort and well-being of your family. Not to worry—with Appel, you have options! We want to make it as convenient and affordable as possible to keep your family comfortable throughout the year.
Do you offer maintenance plans?
Yes, we do! Please call us for more information on our options.
Do you replace thermostats?
Yes! By using the brands trusted by Appel Heating & Air Conditioning, you can rest assured that your home’s temperature control is in good hands. Customer service means providing you with the products and services you want. If there is a special thermostat you have your eye on just let us know. We can and will get it for you.
What's included with a cooling equipment inspection?
Appel Heating & Air Conditioning’s NATE-certified technicians check, clean and inspect everything. Here’s what we do:
Check your thermostat
Check your air filters
Clean the condenser coil
Check the refrigerant charge
Check the electrical connections
Check refrigerant lines
Check the fan blade and motor
Lubricate moving parts
Check and adjust the air flow
Check temperature drop
Clean the condensate drain
Check superheat/subcool
Check the contactor and capacitors
Check compressor terminals
Check the disconnect power box
Inspect the evaporator coil (when accessible)
Check total system operation
Make necessary recommendations to ensure your safety and comfort
What's included with a heating system inspection?
Whether you have a heat pump, or gas, electric or oil furnace, Appel Heating & Air Conditioning’s NATE-certified technicians check, clean and inspect everything. Here’s what we do:
Check your thermostat
Inspect and clean the heat exchanger
Check your air filters
Check ignition systems
Check and service burners
Check for gas leaks
Lubricate moving parts
Check the furnace safety controls
Check the gas valve
Check the electrical connections
Check the blower operation
Check temperature rise
Check electric heat elements
Check sequencer operation
Check the reversing valve
Check defrost control
Check total system operation
Make necessary recommendations to ensure your safety and comfort
Do you service heat pumps?
Yes.
How often should I have my HVAC system serviced?
It's recommended to have your HVAC system serviced at least twice a year, ideally in the spring and fall, to ensure it operates efficiently and reliably throughout the year.
Do you offer emergency HVAC services?
Yes, Appel Heating & Air Conditioning offers 24/7 emergency services to address any unexpected heating or cooling issues that may arise.
How long has Appel Heating & Air Conditioning been in business?
Since 1948, we have been a trusted name for home comfort systems throughout Hamilton County and Indianapolis Northside.
How does Appel Heating & Air Conditioning ensure honesty in its services?
We promise not to sell you anything you don't need or equipment that's unsuitable for your home. Our recommendations are based solely on what's best for you, maintaining the trust we've built since 1948.
How does Appel demonstrate customer care during service visits?
Our customers are our friends and neighbors. We ensure that our technicians leave your home spotless after completing their work. We value professionalism and courtesy, treating your home with the utmost respect.
Does Appel Heating & Air Conditioning offer financing options for HVAC systems?
Yes, Appel offers financing options to make it affordable to install new heating or cooling systems.
Are maintenance plans available for HVAC systems at Appel Heating & Air Conditioning?
Yes, maintenance plans are offered. You can call them for more details on available options.
Can Appel Heating & Air Conditioning replace my home's thermostat?
Yes, they install trusted brand thermostats and can order special types upon request.
What does a cooling equipment inspection include at Appel Heating & Air Conditioning?
Technicians check the thermostat, filters, condenser coil, refrigerant charge, electrical connections, and more to ensure system safety and comfort.
What is included in a heating system inspection by Appel?
Technicians inspect and clean the heat exchanger, burners, safety controls, gas leaks, and test system operation for heat pumps and furnaces.
Does Appel Heating & Air Conditioning provide emergency HVAC services?
Yes, they offer 24/7 emergency heating and cooling services.
How often should I schedule HVAC servicing with Appel?
It is recommended to service your HVAC system twice a year, ideally in spring and fall, to maintain efficiency.
Where is Appel Heating & Air Conditioning located in Carmel, Indiana?
They are located at 530 South Rangeline Road, Carmel, IN 46032.
How can nearby transportation services help me reach Appel Heating & Air Conditioning?
Nearby taxi services like Night Rides and Yellow Taxi offer convenient transportation options to reach Appel's location easily.
Are there dining options near Appel Heating & Air Conditioning for customers to visit before or after their appointment?
Yes, customers can enjoy meals at nearby Mexican restaurants such as Cancun Mexican Restaurant and Estrella de Oro.
What other nearby stores might be useful to customers visiting Appel Heating & Air Conditioning?
Nearby hardware and home improvement stores like Carmel Welding and Windows & Siding of Indiana provide customers additional shopping options.