4.6 
357 *The Angi rating for Heating And Air Conditioning Service companies in Union, OH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.
*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Union, OH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.
Last update on January 19, 2026
Serving Union, OH and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 2007
Free estimates
Emergency services offered
"James Ingram came out to do our Spring HVAC checkup. James was very friendly, professional, and did a great job. We highly recommend EcO Plumbers and James for your HVAC needs!"
+22
Serving Union, OH and surrounding areas
Approved (Corporate)
In business since 1969
Free estimates
Emergency services offered
"I put in a whole new HVAC Trane system 2 years ago, and signed up the the twice a year maintenance program. So far, the technicians who come to inspect and examine both the heating and cooling systems have been very competent and thorough. Yesterday, Dave Seible was my technician and he was great. He also had filters available, so I bought those too. Very good and professional operation."
+16
Serving Union, OH and surrounding areas
Approved
In business since 2004
Free estimates
Emergency services offered
"Extreme Heating and Air Conditioning installed an 18 SEER HVAC system with zone control for me. I am very pleased with the results and performance of the system - far better than the previous system WRT air flow balance. All personnel were very knowledgeable and professional and I highly recommend this company. Thanks to Tristan, Brett, Ryan, Joe, Paul and special thanks to Dave and Tyler for working through some parts failures. I am very pleased."
+47
Serving Union, OH and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1978
Free estimates
Emergency services offered
"They came the day of the call to give a estimate on a HVAC sys. and were able to install the follow day do to the need."
Serving Union, OH and surrounding areas
Approved
Super Service Award Winner
In business since 2021
Free estimates
Emergency services offered
"Called with an emergency repair,Fast response, able to replace funaca next day.our go-to for HVAC from now on. Goodbye to "experts""
Serving Union, OH and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"First of all I am not easy to satisfy. I run a local roofing and restoration company so I expect a lot. I analyze not only quality but price and customer service as well. Wells HVAC satisfied and even exceeded my expectations. I thought I had a good offer from another provider and I explained to wells that I was ready to pull the trigger with another deal but they came out and offered a better deal with a better warranty at a better price than the one I was going to go with. I was really happy they replaced the system in my Condo. I plan on using them to replace my unit in my other condo when it goes out and possibly the unit in my primary home. You can end your search here and go with Wells. You will be glad you did!
Sincerely,
Jay Thoms
President
Kerrigan Roofing and Restoration (and satisfied customer)
"
Serving Union, OH and surrounding areas
Approved
Free estimates
Credit card accepted
"Riley did a great job on a new gas furnace and air conditioner install. I was very impressed from start to finish. He was on time, professional and answered every one of my questions. My system was about 15 years old and I have had to put some money into over the years. I used several other companies during that time and none of them, I mean absolutely none of them, compared to the process I just went through with TrueTemp Heating and Cooling. Everything from the service call, to the consultation process and the installation of my new HVAC equipment was top notch. Can?t recommend this experience enough! Thanks TrueTemp!"
Serving Union, OH and surrounding areas
Approved
Super Service Award Winner
In business since 2000
Emergency services offered
Customers say: Super punctual
I am able to take care of nearly all of your home improvement needs with the speed and efficiently you expect. I use only the highest quality helpers that have the specific knowledge of your particular project. Combined we have over a hundred years of experience.
+93
Serving Union, OH and surrounding areas
Approved
In business since 1969
Free estimates
Emergency services offered
At Summers Plumbing Heating & Cooling we try to make service easy & fast! With all of our locations there is a good chance we're helping someone in your neighborhood with their plumbing, heating or cooling issues. We take the stress out of calling a repairman! Our friendly, helpful, and honest technicians are here to make your life easier, not harder than it already is.\n\nOur highly skilled, licensed, and trained technicians perform superior work, every time. We are committed to being honest, thorough, and friendly when we arrive at your house for an estimate or repair.
Serving Union, OH and surrounding areas
Approved
In business since 2019
Free estimates
Emergency services offered
Your comfort is our priority at Nextgen Comfort. We proudly serve Dayton, OH with reliable heating and cooling services designed to keep your home or business comfortable no matter the season. Our mission is simple ? to provide expert solutions with honesty, professionalism, and a personal touch you can count on.\n\nWe know how important it is to have an HVAC system you can rely on. That?s why our team goes above and beyond to deliver services that are not only efficient but also tailored to your specific needs. Whether it?s beating the summer heat or staying warm during the winter chill, we?ve got you covered with dependable results every time.\n
+3
From average costs to expert advice, get all the answers you need to get your job done.
The furnace and the air conditioner are two separate systems in your home, but they work together to keep your space at a comfortable temperature.
A central air system is great for someone looking to cool and heat their home all year round. Even if your home uses baseboard heating, you can still make the switch. Read on to learn more about adding central air to a baseboard-heated house.
If you live in a climate that sees high heat, you'll need a cooling system. So should you install a ceiling fan or an air conditioner? Here's how to decide.
Have you ever wondered how AC works to make cold air that it pushes through your home? Follow this guide to learn air conditioning basics.
Your air conditioning unit is a lifesaver during those blisteringly hot summer months, but common air conditioning mistakes may be increasing your energy bill and decreasing overall efficiency. Read on to learn how to avoid them.
Adding central air to a house can add comfort and increase your home’s value. Our guide explains what you need to know about installing AC.
