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.
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Certified by Appel Heating & Air Conditioning • Mar 15, 2026
Certified by Appel Heating & Air Conditioning • Mar 15, 2026
Reviews
4.9
670 reviews
5 stars
632
4 stars
18
3 stars1
2 stars2
1 star
17
SF
Sergei Filatyev
2 days ago
1.0
I had an HVAC system installed last year. It was very hot that day and they told me that they did not want to test furnace after the installation at that time but are going to do so when it gets cooler. Now when I called to schedule a visit they told me they don't do it.
TH
Tim Higgins
3 days ago
5.0
Another great job by Appel! David, the technician got my 83 year old Moms furnace back up and running just in time for the mid-March snow and cold snap. He was very professional, kind and considerate. I highly recommend Appel.....locally owned and operated, which is important to us!
MA
Marc Allan
Mar 11, 2026
5.0
Appel is the best. They’ve been taking great care of us for 30-plus years, and we’ve always been able to count on them to do excellent work.
AU
A Google User
Mar 4, 2026
5.0
If you want to remove negative reviews from your Google Business, contact me via my profile; my contact details are listed there. After work you can pay..
CB
Connor Bradley
Feb 10, 2026
1.0
Unfortunately we have had an incredibly poor experience with Appel with regards to customer service since our unit was installed.
Got a new unit from Appel in March 2025. In early December, the brand new heat pump went out. Technician came, diagnosed the issue, and said they would be in contact with regards to getting it fixed. No one called for 3 days. I finally called and was told a part needed to be ordered and it would take 4-6 weeks. Every time over the next 4-6 weeks I asked to be updated (given it was the coldest months of the year), rarely did anyone call when we were told we would receive a call. It was constantly us having to follow up on reception telling us that someone would call.
The part finally came in at exactly 6 weeks (after my wife was told they were able to find the part from a different supplier). However, this created new issues and our heat pump continued to not work. A few days later, another technician came out to check out the issue, said another part was needed. It was at that point I asked if the technician would advocate for us to the main office - since the technicians have bene fantastic and I just needed someone to communicate with us and. He told me that someone would call the next day (Tuesday) to communicate next steps. Tuesday came with no call, so I finally called at 4:30pm and was assured that someone would call me that day to provide next steps. No call.
I called then around lunch Wednesday to follow up and asked to talk to speak to someone else, since most everyone to that point who was supposed to call never did. I was told the GM would call later that day. That did not happen (though someone did call to communicate that something came up which I understood and appreciated being communicated with). I was assured I would receive a call Thursday. Thursday came, again no call. I called Friday morning and was told the GM was out for the day. I expressed to the person I spoke with how frustrating it was that no one would follow through on communication, or give us updates, or act like they cared. That person said they would make sure I was contacted when he returned and would personally follow up by the end of the day with updates because they cared. And again, no call back.
The next week came and went with no call from the GM. I reached out to my sales rep expressing how frustrating this has been and was told now by a 3rd person that manager would contact me. We are coming up now on 2 weeks and being told by 3 different people that I would get a call by someone higher up and still nothing.
In the meantime - after 8 weeks during the 2 coldest months of the year, I’m finally getting to use my less-than-1-year-old heat pump. And this is thanks to the technicians, who have been incredibly helpful through this and the only ones keeping me sane throughout dealing with this. And the manufacturer is (supposedly) offering some sort of compensation for electric heat.
But not even receiving any sort of “We’re sorry for not following through time and time again when we say we will call you” or “We’re sorry you can’t use your new unit and we are doing all we can to help” makes me feel like this level of customer service is just par for the course.
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.
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