We own First Coast Realty of Jacksonville... As property managers we use complete air systems As…read moreour primary go to AC/HVAC company. We have been using them for several years and if I could give them 10 stars I would. They're honest, reliable , And they're pricing is always reasonable. They try to accommodate you same day you call And you never wait three or four days for technician to come out as some companies do even in the dead of summer when more AC issues are prevalent. You will always be greeted with great customer service by Leihanna!

I highly recommend Complete Air Systems to anyone needing a new A/C or for servicing an existing…read moreunit!! This company always provides top notch service. They are honest and don't over charge or recommend services that aren't needed. Their rates are very reasonable too. I have been a customer since 2018, after buying a new A/C unit from them. My unit is very reliable. They also complete the annual maintenance for us and call services on the rare occasion. I only had two minor problems which were probably preventable on my part. Thanks again to Don and team for always taking care of us

Never even returned my call. Find that odd for a business citing 24/7 hours. My ac went out and I…read morecalled them to see about getting it fixed. Got a voicemail. Left a voicemail. No call back.

Finally found an honest AC company in Jacskonville. I called them for a second opinion because…read moreanother company told me I needed a whole new system. The team at AC Engineers NFL came out, did a thorough check, and told me it was just a repairable part. They fixed it for a fraction of the cost. Honest pricing and no upsells. Will definitely use them again!

I have used this company for a number of years, and I have been mostly pleased with the quality of…read moretheir work. However, I have noticed a steady decline in professionalism over the last few years. Several weeks ago, my AC unit stopped cooling, so I called for service. Long story short, I was visited by about four individuals over several days while Mark (owner) looked for a new coil; then, he found one in his warehouse that he "forgot he had." After the coil was installed and the unit was cooling consistently, I had to beg him for a bill. He finally called to tell me the bill would be high but cheaper than a new unit, which he said would cost me about $10,000.00. Then, he emailed me a bill for $2,740.00 - $2,200.00 for the coil, and $540.00 for labor. Right after he sent me a bill, the unit started making noises and his office person, Karen, started harrassing me for money. I told her about the noises, and I received a call from one of their technicians this morning, stating that he had received a service call for this address but there was a hold on my account for non-payment. I was taken advantage of financially, and harrassed on top of it when I was trying to get them to come check the work they had recently completed. I have no intention of ever working with this company again. They acted as though I was an imposition, even as they stood there with their hand out.

This is an excellent company to work with to get your AC and heating done in your house. They are…read moreexceptionally honest and transparent in their work. The owner Mark is a wonderful human being and very savvy about electrical repairs and installing AC/heating people that work with him, so far that I've met include Neal, Jay and Karen, who answers the phone/Admin. Everyone does their job exceptionally well. They are also very pleasant and their work of Jack Strickland, heating and air conditioning, is very good value. I cannot say enough good about them as human beings, and a reputable business. yeah

Yesterday, I had my AC system replaced, and I couldn't be more pleased with the experience. Nick…read moreand his crew were extremely polite, professional, and respectful throughout the entire process. I initially received a quote in September 2025 for both the indoor and outdoor unit replacement. After comparing with other companies, Velocity's quote came in significantly lower--nearly $18,000 less than one well-known competitor--which immediately stood out. Nick even came back a second time at my request to inspect the attic and evaluate the ducting system. I truly appreciated his honesty--he clearly explained what needed to be repaired and what didn't need replacement, which gave me a lot of confidence in moving forward. Despite a few minor installation issues, the team handled everything well and ultimately did a great job. Their professionalism and integrity really made a difference. I'm very grateful for the service I received and would highly recommend Velocity to anyone--whether a friend or a professional colleague.

I called Velocity flow because my AC went out after less than 2 years. They scheduled an…read moreappointment the following day between 11-12 and nobody showed up and no phone call. I called them about 12:30 and they said the person was just finishing up and would be at our house soon. I had a 1:30 dr appointment and I had to cancel. About 2pm i called and they said he would be at my house about 4pm. He showed about 3:40pm. The part was covered by Trane and the technician said he called Nick and he was supposed to charge me $275. I then called Nick and he said he would charge me $215. I said what is your service call charge and he said $125. The tech took maybe 10 minutes to fix the AC. Apparently they don't have set pricing. Stay away from this company. I will be looking for another AC company that is certified by Trane.

Nothing like coming home from a sweet adventure ... only to discover the A/C had gone out!…read more The house was reading 91°, but I'm pretty sure it was even hotter. My Nest showed the system had been running nonstop for 24 hours trying to keep up. One panicked call to Alex at Guardian HVAC LLC, and he jumped into action. In less than 90 minutes, Leo was at my house, diagnosed the issue, and had the A/C back up and running. I'm incredibly grateful for people who answer the phone, show up when they say they will, and take great care of their customers. Thank you, Alex and Leo, for saving the day! If you're looking for an HVAC company that truly delivers when it matters most, I can wholeheartedly recommend Guardian Air. As a Friday evening emergency call - I found their pricing to be very reasonable!

My AC had i thought broken beyond, but they (HE) knew what to look for! Wonderful. Had used them…read morebefore, with mother. Now I had issue, and on point, knowledgeable, friendly and very cost effective. Call them anytime. Prompt turn around when called for service!

Gave me a price did the job said it didn't need a thing , MIKE was absolutely the best technician I…read moreever ran across in 81 years on this planet , absolutely will use them again !!

do not be fooled into signing a permit waiver for work. this company installed a new unit and…read moreFrankensteined my ac unit with a front facing air handler at the door causing poor air handler air flow in the space and causing negative air flow. They also promised a yr supply of vent filters and never delivered, asking what is the address to send to...hello...your techs were at my house, it the same address. I highly do not recommend. I have Brandon from 5 star heating and air fixing the horrible work by cool r us.

Sam came out on the Sunday after the 4th of July. He was fast and efficient and did a great job. I…read morewas concerned about the heat given we were having a birthday party for my 102 year old mother. I can't say enough good things about this company.

Wednesday Nov 5, technicians Dustin & Paul arrived on-time (as usual :) to provide a scheduled…read moresemi-annual maintenance service on our Heating & Air system. They were thorough, knowledgable, professional and up-to-date on every question I asked. Texts prior to arrival are always appreciated & we've not been disappointed with Action since we moved here in 2014. P.S; That new unit Action installed is 'top drawer'.

Great service and installation. Price was excellent and job was completed in a half a day.read more

Darnell AC was very responsive when I contacted then and a tech was at my house within 3…read morehours---replaced a capacitor and ac back working....highyl recommended--thanks Greg.