Keahi did an excellent job cleaning our Mitsubishi split air conditioning system. He explained exactly what he was doing throughout the whole job. Highly recommend Ultimate Air Conditioning. read more

Kimberly from Ultimate Air Conditioning was able to squeeze me into the last day of their AC Maintenance special even though we had 7 units. They arrived on time and started knocking out units one by one. They cleared the area, removed the outer housing/filters and cleaned everything, put a waterproof shroud around the unit and a drop cloth on the ground, applied coil cleaner and pressure washed the inside until the water ran clear. Sanitized the inside unit. After completing all of the inside units, they went outside and deep cleaned the outside units and inspected refrigerant levels on the units. One of our units was 3 lbs short out of 4, so Keahi gave us options on how to resolve. They are very meticulous while cleaning and courteous when going into your house. They had to work especially long trying to cleaning one of our units (filled an entire bucket), but the results were amazing. We look forward to using them again in the future. Mahalo! read more

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Updated Review (05/08/2026): Woke up this morning to a wet spot on my couch. Can you guess what caused it? Our a/c is still leaking, even after someone was sent to remedy the situation. This is so unacceptable. I paid over $400 to get my a/c cleaned, and now I'll probably be stuck with an even bigger bill to get it repaired or replaced since something is clearly wrong with it now after this company 'cleaned' my a/c units. Buyer beware. Further Update (05/08/2026): The company contacted me via text, and it is clear they are not capable of properly assessing an a/c system prior to beginning a service nor are they capable of handling systems that drain into a single drain line. A quick Google search indicates that two a/c units sharing a single drain is not uncommon, so I fear for others who have the same type of system as me. While they remained professional in their communications at first (which was the primary reason for my initial revised 4-star review), it is apparent that they do not have the knowledge or skills to properly complete the job for which they are hired and they aren't willing to take accountability for damage that they caused. If they didn't know how to handle a system like ours, then they should not have performed the service in the first place. Our a/c units were in perfect working condition (no issues, no leaks) before they came to 'clean' it for us. We've scheduled to have another company assess the damage and repair it for us, which will now cost hundreds of dollars more than the initial cleaning cost. For this reason, it is not hard to see why a customer would give a 1-star review and a strong 'do not recommend' warning to others. Text conversation with the company is included below for reference. read more

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Ultimate Air conditioning reliably arrived when promised and resolved my wall unit AC issue promptly. I will use them again......if needed with my other units. read more

Did a great job, were on time, and worked quickly. Will absolutely be using them again.

Home AC had a leak. Called UAC and the guy couldn't find the leak so he injected leak stop into our system. 1 year later our AC had a leak. Called UAC and the guy injected more leak stop. 1 year later AC had a leak. Called a new AC vendor. They found the leak. Its where two pipes connected but there's so much leak stop in our system we need to replace everything. Cost to replace is over $9,500. I'm not sure what we're gonna do now. read more

Superb service and customer highest quality from initial contact to close of project. Management tech Ms Kimberly to AC Service technicians provided professional work. Thank you very much read more

Kimberly and Steven have both been wonderful to work with. A local small family team with integrity. I just signed my quote, which was transparent, well explained, and reasonably priced. I'll update with photos once the job is finished! read more

What can I say about UAC and the two techs that showed up, Keahi and Levi? They are just plain awesome, that's what. Let me first start by saying that I had wanted replace my AC since August - however, it was a pain trying to get someone to replace an window unit, especially in an HOA area. In the last week of December, an issue sprung up that required me to really change the AC at this point (the old AC wasn't draining properly and was dripping on my downstairs neighbor's AC). So I ended up putting a request for quote and of the 3 that messaged me (One company kept spamming, another one said they don't perform the service), only UAC (ULTIMATE Air Conditioning, not to be confused with another company) responded and with a real person at the other end. Ms. Kimberly was very helpful in answering all my questions and concerns. Not only that, she was able to provide me options that fit my budget. And so, we scheduled the installation after I chose the more premium option of a 10,000 BTU air conditioner to replace my existing 8,000 BTU. On the day of the install, I received a call while at the auto shop - Keahi and Levi we're en route to my area an could start earlier if I was available. Excellent news to hear considering I had re-scheduled this for later but was already finishing up at the auto shop. Perfect timing! Keahi and Levi are doers more so than talkers - I really appreciate this as someone who likes to just focus on the work without extra chit-chat. However, they are also very knowledgeable and could answer my questions fairly easily. In other words, if you have questions, please ask! They will answer! Honestly feels like you just hired your friends to help you install your AC, haha~They were also receptive to my requests or things that I pointed out, which is a huge plus (I asked for additional caulking around the unit to ensure the best seal as I saw some light poking through from outside near the base of the mounting area). On pricing, I won't say they're cheap and good (does not exist) and most DIYers would probably tell you it's a rip off but I ain't a DIYer so there's that. I am someone who values a quality product and excellent customer service, and that, is what was delivered to me. In reality, the price is reasonable once you start itemizing all the things they need to do to get your new AC up and running. It's all inclusive to a reasonable extent (think HOA) - they replaced the cracked glass panel with plexiglass, ensured proper mounting brackets and leveling, took and disposed of the old unit. Special shout out to Keahi for addressing a post-installation issue with expertise and professionalism which I say reflects highly on the company as a whole. It truly is hard to find honest companies but even harder to find people who are proud of the work they do and are willing to back it up. Would I recommend Ultimate Air Conditioning? 100% Scheduling? Too easy. Professionalism? High level. Friendly? 100% Price? Worth every penny. Would I hire them again? Absolutely. read more

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Steven was the first to respond in minutes. He came out spotted the problem right away. Recommend I change the aged unit as parts would be hard to find. But fortunately the next company called and had a used board. I would definitely recommend Steven and Kimberly. Hopefully the next time it goes out I can upgrade the units.. read more

Keahi was a pro. 3 split A/C units cleaned inside and outside with no mess and in good time. Will be using this company again in the future. read more

I hired this company to clean the mold in my air conditioning system, including cleaning the air vents, ducts, and indoor units. The total quote was $2,800. Two workers arrived at my home around 9 a.m. and texted me at 1:30 p.m. saying the job was complete, taking a total of four hours. During inspection, I found that multiple vents and ducts were not cleaned, the indoor unit was left untouched, and many vents, ducts, and outlets still had a large amount of dust and mold. After noticing these issues, I pointed them out and requested that the cleaning work be completed before paying the bill. The workers from the cleaning company immediately became extremely aggressive (possibly because I was the only woman at home at the time) and demanded that I pay the bill immediately or they would not leave. Fearing for my safety, I decided to call the police. After mediation by the police, I paid $1,000 on-site, with the remaining balance to be paid once the rest of the work is completed. read more

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This was such a better value than the quoted amount I was given by another company. Keahi was very helpful and informative!! The service was great. I didn't know my unit had black mold in it. After the cleaning, the air was blowing clean and strong. I will be calling them again in 6 months!! read more

I'm soooo late with this review, but let me tell you - they are AWESOME again and would definitely use them again! Renovated our house and decided to put in another unit. UAC responded quickly to us and like before, we're so attentive to what we needed. (I'm sorry - so bad with names!) Da braddah and his lovely wife came to assess and recommend what would work for us...and TWO DAYS LATER - yup, two days later! - we had a full installed A/C Daikin unit that also cools off our other room! The boys who installed were super nice, friendly, and professional as well. Really incredible service and we are 1000000% happy!!! I highly recommend them! read more

Upfront and honest. Had our AC refilled with sealant and ultimately it stopped getting cold again fairly quickly but they were upfront and honest with the risk that it could happen before they did the work. Would go with them again. read more

AC unit needed cleaning, immediate response was positive, AC ran cold for 3 days then stopped. Guy had originally told my husband the unit needed refrigerant service,which was performed. Contacted the owner for the invoice and informed him of the issue with the unit not blowing cold air anymore and he said he'd send the guy back and return the money for the service, which he did. We were confused as to why wasn't our AC unit working and rather than give us our money back, why wouldn't they figure out what happened? We ended up having to replace a one year old unit for $4k. read more

Excellent service. Service person was thorough in checking my mini split to diagnose the problem. He was also knowledgeable enough to provide recommendations about repair vs replacement. read more

Technician was friendly and helpful. He took some extra time to unclog the emergency backup drain, which could be reached only with a tall ladder in less than ideal terrain to support one. Reasonable price for the service. read more

They were very good and had the best price. I got an appointment in two days. They were a little late, but informed me they were running late. The technician was organized and efficient. I can say enough on how good he was. read more

Steve the owner and his crew did an excellent job installing new air conditioning into 4 rooms in my 60 year old home. They were professional and courteous . They worked efficiently and the job was well done ! I will recommend them to all my friends . Thank you for an excellent experience !!!! read more

Came today to clean out our window air conditioner. Got an appointment the next few days after call. Was very informative about everything, answered all my questions. Levi was who worked on our A/c. I asked a lot of questions about our mold issue , got some answers. First time getting mold cleaned from a/c. Grateful for the service read more

One of my spit units stop working. Steven explained everything about the job. He quoted a fair price for the work and finished in an hour. Refill refrigerant seal the leak and clean two units. He also explained the annual maintenance that has to be done on these units. read more

I am so glad I chose Ultimate Air Conditioning to install a brand new split air conditioning system in my two bedroom condo. Everything was done very professionally and the team was very knowledgeable and they were able to explain everything to me in a simple and easy to understand way. They showed up early and they were able to install and completely setup my new Daikin split AC system in my living room and also both bedrooms. Also they made it a super clean low profile look that doesn't take much room and keeps all the cables and wiring out of the way. I am so glad I chose Ultimate Air Conditioning. Thank you for the great service and I will definitely recommend your company and services to all my friends on the island. read more

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Went out of their way to help me on a last minute problem. The tech was very knowledgeable and friendly their bid was very reasonable

I would give 10 stars to Ultimate Air if I could. Our AC unit broke down and we reached out to nearly 10 different companies. Ultimate Air really wins on being responsive, offering fair pricing, and providing great service. They moved quickly to identify the issue, ordered the parts we needed, and get someone out quickly. They also helped me fix my evaporation pan and overall, I'm really thankful to have found them and could not recommend them more! read more

Ultimate Air Conditioning was quick to respond to my request and worked with me to find a good time that fit our schedule. Keahi arrived on time and did a fast and thorough job. I would recommend them to anyone needing their AC units cleaned, especially if you have wall units. read more

Ultimate Air Conditioning - Standard AC unit was cleaned. - Heating & Air Conditioning/HVAC Near Me

They were quick to respond. Came out to clean my split system which had water leaking out the front due to a clogged drain. Less than an hour later they were done and ac was working flawlessly again read more

Techs were quick, professional, and informative. The air already feels cleaner when I breathe. Thank you Keahi and Levi!

This company cancelled twice on me. Then gave me a time when I was not available so I asked them to call & only received text responses. Do not recommend. read more

Great communication, friendly and knowledgable tech, and really fast availability! I wrote them yesterday, and they've already come and gone. The tech was more thorough than the company that did our installation and last two years' of servicing. I'll be putting their contact info on my yearly calendar reminder. read more

They were the first to respond when I reached out to contact a different business via Yelp, so I decided to go with them without knowing much about them. One of the units in the split AC system in our condo wasn't blowing cold air. Steven was able to come in the very next day, which was awesome. When Steven came in, he said there was a leak in the compressor and the sensor was off. He added 2lbs of Freon and a leak seal, but the AC still didn't work. Then, he suggested that the leak was due to a small part that had to be replaced, which he could order for about $100 that would come in around four weeks. He charged us $400 for the visit and left, saying he would call us when the part came in. When I called the local Mitsubishi dealer, they quoted me around $70 for the part plus shipping, that would come within a few days. Two weeks later, all the ACs stopped working - they would automatically turn off after a minute or so. When I called Steven to let him know what happened, he said it sounded like something was wrong with the compressor, and that I would have to decide if I wanted to replace just the compressor or the entire outdoor unit and he'd call me back to let me know when he could come by. I decided to bring in two other companies separately to take a look and give me some second opinions. Both were concerned as the compressor had blown in a way that wasn't common and could have been caused by the leak seal (not supposed to be added to small systems like mine), although they stated it could have just been coincidental timing. I decided to replace the entire outdoor unit (which includes the part that Steven said was the issue), but even after that, the initial problematic AC still didn't blow cold air. Turns out, it is a part in that individual unit that is the problem. I never ended up hearing back from Steven or anyone from Ultimate Air Conditioning. He seems very nice and other than not getting back to me, they seem pretty responsive. Maybe would just be good to always get a second opinion, no matter what company you decide to go with! read more

I decided to go with the first company . After checking their yel, I was convinced that they could do the job. Their office scheduled a brief visit for an estimate. was easy to talk to assured me that they could do the job. They had an opening the next day, came on time and completed it professionally. I couldn't have asked. read more

Fast response, great service, and very fair pricing! Steven and his crew were awesome in servicing my living room split A/C. He explained everything very well and in less than an hour my A/C was blowing ice cold air again - Big Mahalo! I highly recommend this company for air conditioning services! read more

Amazing, they did a great job quick efficient I was able to keep my business running while the new AC was being installed. The cost was comparable to others. read more

This company came in clutch. They answered me right away and came after work on a Friday night when another company cancelled on me last minute that same afternoon. The price was fair and they put in a brand new AC unit for me on a Sunday which was amazing. The guys were super professional, helpful and organized. I definitely recommend! read more

Quick service - from replying to my request for a quote, to the initial evaluation of my broken split ac unit, and finally the installation of my new unit - everything was done within a week! I sooo appreciate how it was all executed so quickly!! Even though we're in the cooler winter months, my family and I are very dependant on the comfort that our ac provides us every day. So I'm grateful that Steve and Keahi run their business in such an upstanding way. They're professional, prompt, do quality work, and their prices are very competitive. read more

I created a yelp project to have my window unit cleaned and UAC was the first to respond with a description of service and price. I was able to get an appointment very quickly and communication via yelp, email and text was excellent. The technicians were fast, courteous and friendly. They answered all my questions and left the unit clean all around. Highly recommended! read more

Communicated fast. Straightforward pricing. Completed the work they said they would conduct. My AC system is working good again. Thanks!

I had a new Friedrich a/c put in yesterday. I can't say enough about the professionalism of this company and their rapid response. Keahi and Levi removed my 31-year old a/c in my condo and had to make the new one fit in a small space. They were able to remove the old wood frame and insert the new a/c no problem. From start to finish, Kimberly kept in touch with me and advised me when the techs would show up. I highly recommend this company. read more

It started from my service request on a Friday. Steve was the first to respond and answered my questions promptly. I was able to schedule an appointment for Monday. I liked that Keahi called to let me know he would be a few minutes late. Keahi did a great job cleaning my unit and telling me what was being done. If I need to, I'll be calling on Ultimate Air. Thank you Steve and Keahi. read more

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