Cornerstone may have been good at some point in the past but over the past 5 to 7 years they have become arrogant and grossly incompetent. They regularly send out "techs" that have little to no knowledge whatsoever. Most of the time now they do much more harm than good. They are way over priced but now seem happy to charge whatever they can get away with and joyfully gouge away with no conscience whatsoever. They send out salespeople like their son in law to "play" with your AC with no idea what's going on. They then make up stories to cover their incompetence. Do not use them , do not trust them, believe nothing they say. You are better off throwing them off your property if you have a system still under warranty and find a competent honest company that can service your system before Cornerstone destroys it. They have earned and deserve zero stars. Their warranties are full of wholes with bogus deductions etc. Both my son and I have fired them for cause recently . Good riddance to bad rubbish! read more

Every time I see one of their billboards advertising "Call Today, Fixed Today" I just chuckle to myself...I last contacted them about 2-3 months ago to service a unit purchased from them (along with a full 10 year parts and labor warranty) only three years earlier (that has had CONTINUOUS issues); they showed up on day one to diagnose the issue, and then disappeared for over a week with NO communication whatsoever. My tenant called me on the 7th day of having no working A/C to ask for an update...all the while I believed the issue had been resolved. I called them to find out what was going on, and it sounded as though it was not a priority (perhaps they were aware, yet didn't bother to communicate this to me). I was a loyal customer of Cornerstone for about ten years, but I firmly believe they've outgrown their ability to provide the service they guarantee, and their prices have gotten *ridiculous in comparison to competitors. They try to sell you one of their annual maintenance plans with each visit (with a convenient monthly payment plan). I ended up buying it on several occasions for my personal residence, which amounted to two free annual tune-ups and discounts on repairs, all for about $150.00 annually. I would have paid less for two tune-ups elsewhere, and the "discounts" I received only brought their pricing a little closer to what I discovered I would pay with a competitor. This unit was also purchased from them with a 10 year parts warranty. The two times I needed warranty repairs, the labor cost was more than $500 for less then two hours of work (the service tech stated that Cornerstone charges flat fees for every job rather than hourly rate pricing)...only after complaining about the cost was I offered an additional discount and removal of the service call fee (which became the norm...there was always an 'initial price quote' followed by a 'better price quote' with a discount reserved for some plan for which I was not currently subscribed). I will say that the techs were always polite and friendly, but always trying to sell some additional plan or protection. I am done with this kind of service. I can't imagine treating customers like this unless you *want to lose business. read more

Both myself and my father use this business for our a/C and plumbing needs. For the most part we are very happy with them. They do a very through preventative maintenance. I really like the 9.95 a month one price for pm contract. One thing I'm not really keen on is the techs writing the invoice, it seems to me it would be more accurate if it came from the office. But maybe that's the way the industry does it, I'm not sure. read more

Have used Cornerstone for our AC needs for years and have always trusted them and their team. Recently we started using them for electrical and plumbing and were happy with them in those areas, too. We signed up for their "maintenance plan"... not sure what they call it... and all 3 technicians showed up on the same day as promised to do their inspections. They uncovered some potential problems throughout our property BEFORE they became BIG problems. Being a member of their plan saved me a fair amount on their posted rates. That said, the only feedback I would have for them is to quit advertising so much and driving their rates up. Their prices are still reasonable... but are on the high side of the other quotes I received. In years past, they would always have been a five star, but I was able to get the work done for less elsewhere. As for the quality of their work and the cleanliness and professionalism of their staff... you won't find any better, anywhere else. FIRST CLASS OPERATION! read more

Excellent A/C service however way expensive on Blue Light UV purchase and install. I paid $594 for install of a 2 year Fresh-Aire Blue Tube TUV-BTER 24 Volt UV Light. Amazon sells the same exact item for $278. Install took less than 15 minutes ($316 profit... is excessive.) I should have investigated this further before purchase; so as the saying goes "buyer beware!". It a shame too since I am one of their long time Platinum Customers. William Messina DNP, RN /amazon purchase info below: https://www.amazon.com/dp/B01GVYUVHU/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=1JFI535JE0S3L&coliid=I2WC2WL3O7NWYM read more

I paid $160 for them to flip a breaker switch. They charged a $69 fee for the analysis, which is a bit high, but I'm fine with the charge. Then they charged $95 to flip a breaker switch, which is insane. The HVAC guy was in and out of the house in less than 5 minutes. I called management to complain and they stood by the charge saying this was the standard default service fee; I thought that was the $69, but apparently not. read more

The company would not honor the $30 a/c cleaning they advertise on their website. Instead, they wanted to charge me $65! No one at the company knew how much they charged per pound of freon. Even the dispatcher had to "call a manager." After pressuring them to find out what their pricing was, I finally got someone to reveal to me that their price per pound was THREE TIMES the going rate! The only company which won't reveal their pricing until you commit to the work is a shady one which will never get my business. read more

I had an electrical problem and needed someone out asap. Jerry G came out and found the problem. He was wonderful and made a tough situation very tolerable . I have been a customer for years and recommend them highly. read more

Outstanding professionalism. We 1st used them when one of our A/C units froze up on July 4th. They were prompt, offered a detailed breakdown of what the issue was, and what options to consider with the prices of each. We called them again when we had a clogged drain at Christmas (it always happens on the holidays!) when a manual snake wouldn't clear it. We had them come out on the 26th. They gave a time estimate, then called back to say they were running ahead of schedule and wanted to make sure it was OK to arrive early. Jerry was the tech who came out, and we were so impressed with them again on this 2nd visit we had them also look at replacing our aging hot water heater. Again we were given multiple options (with pricing) and invited to check around to see if it was a fair price. We did and it was. Despite it being what is in effect a holiday week between Christmas and New Year's the new water heater was installed in a custom location we had wanted, on budget in less that 48 hours after we gave the OK to do the work. Highly recommended for any plumbing, or A/C needs. read more

My faucet in kitchen broke and I called Cornerstone. They came promptly. Tony was awesome and explained everything. He had such a friendly and funny attitude. He removed the old and replaced the new one in about an hour. He cleaned everything too. Could not ask for better service. read more

We really appreciate Cornerstone's professionalism and courtesy. Their office staff is always very helpful. I really like the text and emails showing when the service person will arrive and a photo of the service person. Even when I my phone cut off the office staff, I was reconnected with the person already working on helping me resolve my plumbing problem without having to re-explain the problem. Chris, the plumber, was very nice, knowledgable, and respectful. While not the least expensive plumber in the area (the office sets the amount for specific services) they warranty the work and get the job done. It is perfect for people like us who just moved to the area and need reliable tradespeople. read more

Some neighborhood kids were playing in my side yard and managed to throw a bat and bust the main water valve into my house. Cornerstone was able to send someone out that evening, within an hour of being called, to get this issue resolved. The plumber that showed up was fast, professional, and did a great job getting this issue resolved. He even managed to make the repair so that the valve no longer sticks out as much as it did when the builder installed it to help prevent any fluke, future catastrophes. Great job and customer service by Cornerstone on this job repair! read more

Cornerstone Air and plumbing. Great people from phone call to Curtis the technician. I called with a couple problems 1 a hammering ( water spurting and banging)in the Kitchen faucet. The wife complaining of a bad smell when the a/c was on. Cornerstone discovered somehow the faucet was a almost closed valve. Done. They could have told me anything. They are honest. Curtis showed up to clean the vents, on time , clean, sharp.Done. Smells great. . These are the people you should use. read more

So my toilets been dripping for about two months now, and now it hasn't fully flushed in 2 days. I decided to give this company out since there has been such positive reviews about them. I'm really glad I choose them. I didn't have enough time to call about the service so I filled out a form online. I probably for a call roughly 2 hours later. The lady on the phone was very nice and accommodating and we set up a time for the plumber to meet. He was right on time the next day. Well, actually 10 minutes earlier then expected. His name was Michael and he was very sweet. He answered all my questions, gave me a few recommendations and went right to work. He was spot on about what the issue was was my toilet. I'd definitely recommend them! read more

I called and a technician was out to help within a couple hours to service a clogged drain line from our AC unit that was leaking in our garage. The office staff were very nice and helpful. Matt was our technician and he was great! Got right to work to fix the problem and gave me great tips on how to avoid the issue in the future. Highly recommend and will call on them again in the future for any issues. Thank you! read more

I had Gary C. come over for a clogged sink and garbage disposal. Cleared my problem with no issues. Quick, friendly service and very knowledgeable. I'd call and request him again but hopefully I don't have to. read more

Josh, the Cornerstone technician, performed the regular checkup and maintenance on our HVAC this morning. He was prompt, professional and very helpful. He even changed all five filters on the returns in our ten-foot ceilings for this 76-year old customer. I am completely satisfied with his work. read more

Cornerstone installed our unit so we called them when the lines were clogged and the air was not working. We called on Monday night and they said they could come on Wednesday. Not exactly great emergency service. We called someone else and they were here within an hour. Disappointed and will not be calling them again. read more

Called Cornerstone one morning about strange electrical problems going on in my house. They had someone out here in less than an hour and a half. They tracked down the problem and fixed it in no time at all. Terry was a super nice guy and knowledgeable. I signed up for their AC, electric, and plumbing annual contract because it seems like a really good deal. I would like to add that their price for coming to my house and checking all of my electrical stuff was very reasonable. I highly recommend them and will use them for all my future needs in their areas of expertise. read more

I used this company for an electrical issue I had. Manny arrived on time, he took all covid precautions & followed CDC guidelines. He explained to me everything he was doing. I was very impressed. Knowledgeable and friendly. A++ would recommend and will use again if ever needed. read more

Reese came out a checked my ceiling for a possible leak. It turned out to be inactive and he later found that my leaky water heater was still under warranty. So he saved us $600 on replacing the other issue we had lingering over our heads. We highly recommend Cornerstone. :) read more

I am writing to tell you that I got totally ripped off by the fine folks at Cornerstone. The office set up the appointment and the slick salesman/Electrician showed up on time, but that was all that was good about the work. He began by walking through my list of electrical work items, taking pictures of each task and gave me a price of $424.00 before the work started. Then after only one hour ,said he had to go and never finished any of the tasks. The workmanship was shotty and none of it complete. I am very disappointed with the overall experience. read more

We contacted this company through Angie's List and we can't say enough good things about Cornerstone A/C & Heating. We were given excellent information from their sales rep., Alex. He answered all our questions and concerns and helped us select a unit that would suit our needs since we were also having closed cell foam sprayed into our attic. Travis and Zack came out to do the install and did they ever work hard. The heat outside was brutal and the attic was that much worse, but they never complained. They worked over 10 hours to get the job done. I had to make them stop and eat. A few glitches & tweaks required 3 or 4 return visits which were done promptly and to our satisfaction. They even answered a call for help on a Sunday! We felt we really got our money's worth and hopefully these two improvements will lower our electric bill considerably and see us through our retirement. read more

Excellent service and really quick response time.(Under 3 hours) Great guys who explained what they were doing and what we could do going forward. Happy to give other advice and no hard sell of service. Would recommend highly read more

Not sure a jack of all trades can be the master of your issue. Had him out to evaluate the AC over summer of 2016 as I wanted to replace it. While measuring voltage, he blew the transformer that supplies power to the interior thermostat. BIG shower of sparks, except July 4th was last week. Then started denying it. Said he had to go to the shop get another (10:1 stepping xfmer and AC guy does not have one?) and left. I probably should have complained, but the next guy I had came in far more competitive than any of the other 4 and had also done my mom's home, so I just moved on. He also replaced the transformer for no cost. Perhaps their other techs are better, but don't deny issues to someone who is familiar with HVAC. read more

Keil did a great job with my repair estimate. He provided me all the information I need to make an educated decision and feel confident in my choices. He was prompt, efficient and polite. I give him 5 stars! read more

Gary arrived promptly at the scheduled time to check out my hot water heater. He was very nice and explained everything in detail. I had a new water heater installed within a few days. Everyone was very helpful! read more

I called Cornerstone because they are a business in the vicinity where I live and I wanted to give them an opportunity to earn my business. The office person was very friendly and set up an appointment for a salesman to give me a second opinion on replacing my central air conditioning. Michael showed up on time the same day with a big smile and an eager to please attitude. He LISTENED to everything I said which to me is most important! By LISTENING, he was able to determine what my needs were and explained how his company could best meet my needs. I wound up making a purchase right then and there knowing I was getting a good deal and a good product. I would highly recommend giving Cornerstone the opportunity to earn your business and hope you have the same experience as I did. read more

I use cornerstone pro's for my electric, plumbing and AC. Every service person has been professional, knowledgeable and on time. I would recommend them. read more

Gary C. was a remarkable plumber. He notified us of the plan he was implementing to find the solution. Found it quickly and had it fixed in less than 20 minutes. Gary was polite and very knowledgeable. He made the appointment painless and even enjoyable. We have used Cornerstone Pros for electrical, heating and air, and plumbing. Always on time. Always curteous and efficient. Thanks Gary! read more

I contacted Cornerstone Air because I saw the positive ratings from other sites. the gentleman who came out was punctial and extremely nice. However, this company is extremely overpriced. He let me know I had a bad freon leak coming from my coils and that i would require purchaisng a new unit. The prices for a 2 ton unit were from $4K-$11K, which is extremely ridiculously expensive. So instead of purchasing a unit from them I chose to get a second opinion and that individual told me that the coils just needed to be replaced not the unit, which would only cost me about $500. BIG difference. I'm glad I didn't go with Cornerstone, or I would've been out $5400 dollars. I would not recommend based on pricing. read more

The only reason I use Cornerstone Air is because of Donald Smith the Technician, If Donald leaves I will take my business wherever he goes. I have been using them for years, they send out these young inexperienced techs who do the basics and try to upsell you to death. Donald came in and noticed that I did not have the proper shut off switch that should have been installed by the builder 5 years ago when my house was built. It should have never passed the county inspection. Anyways, I filed a warranty claim with my builder and it was installed, how their techs could have been servicing my house for all these years and not noticed?! Donald is old school and knows his stuff! People in the office are useless.... read more

We came home from work to find our house at 88 degrees and the air conditioner blowing out hot air. It turns out the fan motor stopped working, so we called around right away to find someone to come out that night. Luckily, Cornerstone sent Matt out an hour later at 8pm to replace our motor and get cool air flowing again. He was very nice and helpful and we thought the price was reasonable for the repair. Other places said we had to wait until the next morning, but the fact that they came out that night earns them 5 stars! read more

Had my water heater installed and guys were awesome !!! We had some set backs due to my HOA but Josh and Robert were great they did amazing job !!! Very nice and professional . read more

Purchased the $49 Angie's List Deal for A/C Maintenance, Cleaning, and Tune-Up, including a Duct Fogging sanitation with One Pound of refrigerant. They reasonably charged an additional $29.95 for second A/C unit. Super communication with company. Answered each email promptly. A technician named Matt arrived and immediately put booties on his shoes to protect my floors. He introduced himself and explained everything he was going to do in great detail. He was meticulous and thorough....he took his time -- was not rushed. I was super impressed with the overall experience with this company from beginning to end. If you are a Angie's List member check out their specials. They also offer competitively priced warranty packages. read more

Nice work replacing a leaking coil in our air handler; efficient and very effective. Top notch professional job performed by Scott and a day or so earlier Matt. Cornerstone is a great company to do business with in my opinion. read more

DO NOT USE Cornerstone air. They are a dishonest company/ manager and owner included, with incompetent, unskilled service techs. I bought a brand new a/c unit from them- very expensive. I also purchased a service contract with them to maintenance the unit. They sold be a unit that has had multiple problems. They have been unsuccessful with repairing the unit. They have avoided all of my calls refusing to come out to do warranty work and let me use my service contract. They have admitted that the unit is faulty and want to wipe their hands clean of it. They left me with a big mess of water stained and mold covered ceilings and a mess of an mold and water filled attic. In addition, they have dishonest repairman. On one appointment that I had with them, the tech asked me if I had any other problems in the house and I did have a problem with my dryer vent. They Cornerstone tech sold me that they repair a/c, plumbing, and electrical, and he would gladly repair my dryer vent. He did the job and he said his credit card swiper wasn't working so I had to pay him my cash or check. I wrote him a check and he said that he would bring it to Cornerstone and write up a invoice and mail it to me. The work he did was faulty so I called Cornerstone to ask them to come to look at it. The manager/owner of Cornerstone air said that he knew nothing of this repair and refused to take responsibility for his employee. He told me that the company was not responsible for their employees doing this type of work. I have been trying to get them to come out for nearly a year now to come out and paint the ceiling that was supposed to be covered under the manufacturers warranty due to a faulty unit. I have also been calling them to have a service man come out to service my unit because I have water and mold all over my ceiling right below the a/c unit. They have avoided my calls and just finally told me today that they didn't want to service my unit anymore because there have been too many problems with it. They recommended that I find a different a/c company. Cornerstone is fantastic about taking your money to purchase and install a new a/c unit and sell you a maintenance contract but are incompetent and unwilling to make good on a faulty unit that is still under warranty and that they sold you a service contract for. Cornerstone has been nothing but a VERY EXPENSIVE, time consuming, home damaging headache for me. I HIGHLY suggest not engaging in business with them. read more

I am very happy with the work Cornerstone performed in replacing my heat pump. We replaced a 14 year old unit that was making a lot of noise. The new unit works great! They were on time and were very neat. The county inspector also told me they did a nice job. read more

Had Cornerstone come out to The Villages to check our furnace for the winter. Discovered the aged furnace was quite old. Was quoted a price to bring it up to par but decided that because of its age we would be better to purchase a new one instead of putting more money into an OLD unit (17 yrs ). Pricing VERY fair. Best decision we made. Very happy with price/service. Punctual/professional and courteous. HAPPY...HAPPY....HAPPY read more

Showed up in time! Great start! With little delay the tech asked me what the issue was. The tech started messing with my a/c looking for the issue. (Even made a joke at a previous companies attempt at fixing my a/c). The tech found mold in my system -which I had suspicion of but other companies had shrugged it off- and got to work cleaning the lines and getting rid of the mold. Installed a uv light to prevent mold growth too. I paid more than I wanted too, but I also wanted to have a working a/c in my house. Let's see how it works, if all is good in a few days I may sign up for the maintenance package. read more