RSJ Mechanical earned our trust from the very first call. Their excellent reviews led us to contact…read moreSteve Winn, the Service Manager, for an evaluation and bid. Steve's positive attitude, problem‑solving skills, and willingness to work within our budget were extraordinary--qualities rarely found in customer service today. Our home presented several unique structural challenges, yet Steve approached each one with confidence and creativity. His crew was fast, professional, and patient, taking time to answer even our odd or off‑the‑wall questions. When an unexpected structural issue came up, they immediately worked together to find a safe, professional solution. Their teamwork and genuine care made us feel like family, not just customers. After installing our one‑of‑a‑kind air‑conditioning system, the team returned the next day to ensure everything was running at 100%. That level of follow‑through is exceptional on its own--but it didn't stop there. A week later, Steve called with news that truly amazed us. On his own initiative, he contacted the Rocky Mountain Power Wattsmart Program on our behalf, and we were approved for an incentive that helped offset the cost of the rewiring and installation. Who does that? It was an incredible act of service and integrity. Steve Winn and his team are, without question, #1 in Idaho. Their professionalism, kindness, and dedication made a difficult project feel manageable and even uplifting. Sincerely, Two grateful old folks from Shelley, Idaho David and Karen Petersen

We are beyond happy with our furnace we called several different companies and got a multitude of…read moreresponses. RSJ showed up to do a quote on time, came in lower than any other company, and delivered a quality product that we are thrilled with! Thank You!!!

I can't say enough about Brian and his team. After having a pretty horrible experience with an…read moreinstall done by another HVAC company, Brian and his team were our saving grace and able to figure out the problems and fix them all. Brian was always a text/call away and he always answered. He was the first HVAC guy in the area that I truly felt like he knew what he was talking about and while he could geek out on all the engineering and specs of HVAC he helped you understand the best route and most cost effective way to get the performance we wanted out of the two systems in our house. I truly wish Brian was an option back when we had started building our house... without a doubt our system would have been installed correctly from the beginning. I have never met anyone who enjoys spending money fixing problems created by another... and that is why Brian and his team will be the only HVAC company I call in the future for all my HVAC service needs. I can't recommend them enough.

From the owner: Installation/Replacement We will provide a thorough exam…read morebefore deciding to replace your unit. If needed, our skilled technicians have been trained to install the highest-rated Coleman equipment. Repair/Maintenance Not only will we keep everything running at full capacity but we will offer insight on what you can do to keep your unit maintained between visits.

They were very helpful when I called for help. I was looking for some help with a fireplace…read moreservice. They are a wholesaler, so they don't do that. But the employee spent a long time on the phone with me making recommendations and giving me some possible solutions. Excellent customer service culture.

From the owner: Wholesale Gas and Wood Fireplaces/Stovesread more

Full A/C and Furnace replacement. These guys were highly recommended to me by a trusted SME. They…read morewere exceptional to work with. Cole, Jesse, and Jonathan were all friendly amd respectful. Handled challenges of my old home like the pros they are. Did not cut corners and offered a great value. I would highly recommend to anyone in the Idaho Falls area

Good find on the APEX uncle!! He was fantastic!!…read more I'm so impressed that the first thing he did was clean the thing up and then told me how often I should clean it and that I can have it serviced and cleaned but this is all I had to do to clean it myself.

I continue to use Conan Heating and Air Conditioning each year for my annual maintenance, because…read morethey are always professional, do a great job and never over charge or try to sell you things you don't need. Jeff was on time, thoroughly checked out and cleaned the AC unit and was pleasant as well, which is greatly appreciated along with excellent service.

I bought a new furnace from them, As far as the workmen go they were great, did a good job and were…read morereal nice too. Furnace is working well. But working with the office is not so great. They sent an inspector out to see the furnace which was fine but didn't notify me that someone was coming, but he thought I had been notified. I was told by the salesman that I would receive paperwork for a $350 rebate from the gas company and the warranty paperwork for the furnace when it was installed. But instead I was told it would be sent the following week. When it wasn't I called and was told it was in the mail. Another week passed and I called again, this time I was told that they had been busy and just mailed it that day. No apology for the delay or inconvenience, or the fact that what I was told the week before wasn't correct. Perhaps I shouldn't have paid the bill in full till I got all the paperwork which naturally anyone would want, so you can get the rebate and so when I sell the house I will have proof warranty for the new owner. But as I said the men who actually did the work were very good at their jobs.

I got a quote for a mini split heat/ac unit. Their bid was accepted. They came and installed it on…read morethe day promised for the exact price quoted. They did exactly what I wanted and the systems are working great.

Great craftsmen, good to work with did a great job. Would employ them again if I needed. Only…read moreproblem is the performance of the product they rep.. Have had experience with two different installations of the Fujitso minisplit HVAC systems (mine and one in Island Park) in both cases the results were the same: the air coming out of the wall units was just not very cold! The floorboard unit works great but the unit that mounts on the wall is just not very good!

This family owned company believes in doing the job right the first time. Ruben is very thorough…read morewhen evaluating the cause of the malfunction and finding the genuine manfacturer parts for the job. I wouldn't call anyone else. I trust them!

Very good service and people. They treat you like your family. Would recommend to my family and…read morefriends