Very quick response time. Have used both A/C and electrical services. I wouldn't call anyone else.

I use Cornerstone for a lot of my needs A/C needs. They have always been honest and very easy to work with. I would recommend them for sure. They are also professional looking when the come to the house, It says a lot when your employees have uniforms. not like some of the competitors where you get thug life in your house and their jeans fall off because they can't pull them up, Iearna. read more

UPDATE: They contacted us and fixed the issue. They were nice enough to cover one of the two parts we needed as well. We appreciate the quick response after we had left our review. read more

I requested a quote for a AC duct replacement and given an appointment VIA text message. Come the day of the appointment I did not hear from anyone and when I called I was told my appointment had been cancelled without any reason or notification. If this is who they are from the beginning, I would not want to deal with them even for the most simple thing. Cornerstone Pros ... I will line the bottom of my cat litter box with your advertisements from now on. Good luck read more

UPDATE: AS OF 8/11 I HAD ANOTHER COMPANY COME OUT AND LOW AND BEHOLD I DIDN'T NEED THE REPAIRS THAT THE BELOW SAID I NEEDED. I WAS LOW LESS THAN A POUND OF FREON THAT WAS IT! I DO NOT RECOMMEND CORNERSTONE OR THEIR TECHS! First time here and was so not pleased at all, the tech was as much as a word I want to use is not appropriate so we will leave it as rude as the manager was as well! My system is only 3 years old they are trying to tell I need over 1000 dollars worth of work done to it and that is just labor the parts are under warranty! I got a second opinion on it and was downright belittled by the tech for getting a second opinion you have to understand you're telling me I need this work done on a 3-year-old system! Then the tech tried to tell me and argued with me about me being the original homeowner! The attitude was not appropriate or appreciated at all! Was told not to get a second opinion that I needed to stick to one company then got yelled at cause my neighbor flushed the line for us due to having to wait for them to come out! we had to get it up and running for the time period! my first-time experience was not good I don't appreciate the attitude of both the manager and the tech who came out! Empathy goes a long way and this company doesn't have that! Now I'm stuck in their monthly service contract cause I thought they were a good place to do business with now I can see why they have a cheap monthly contract they want to hook people and for them to be stuck! The way I was spoken to by the manager and the tech was right and someone shouldn't be belittled cause they get a second opinion read more

Called cornerstone about a drain line needing to be snaked. This is an additional property that I own. So the lady on the phone told me that they don't service "rental properties". Then I told her lets consider it my home because it is, I own it. Told her I was probably going to sell it. Then she tells me its a $350 trip charge because Im going to sell it. WHAT A JOKE COMPANY!!! Obviously won't be using them or recommending to anyone! read more

No free quotes. They want to charge you before even giving you a price for a simple job they've likely done hundreds of times.

Used Cornerstone to help with the air quality in my home. We were able to add a few of their recommended products and can see such a difference in our home. The air smells clearer and the amount of dust I have now compared to prior to installing is so minimal. I couldn't be happier for the level of workmanship they provided and the price point we paid. Thanks Cornerstone!! read more

I would like to give Kyle from Cornerstone an outstanding employee reward!!! He is truly an asset To your company. Awesome young man. He gets 5 stars. Only 4 stars because of pricing. But they always work With me. read more

We had a toilet that was never properly installed despite prior company coming out three times and breaking the toilet paper holder in the process. Mike Hill came out and did a beautiful job and remove extra wax rings the other company just left under the toilet and never got a proper seal. Mike also installed my new toilet seat which I very much appreciated. From setting the appt, the follow up and timely arrival everything was professional. While price was a bit expensive I learned my lesson from prior company You Get What You Pat For. We would definitely use this company again and Mike Hill our plumber was great and professional. My bathroom now looks great and I will be able to keep it clean. read more

My expensive of a plumber charging a consultant fee, usually has been VERY expensive. A plumber should know how much it would cost to change out a toilet, even with additions parts needed. read more

They are still trying to get it right, but they are making progress. I had a 12-year old AC system. I had ZERO problems. Plenty of cold air, acceptable humidity with 1 dehumidifier that I emptied once a day. The unit cycled on and off as anyone would expect. I decided to replace that system with new so I could control when and for how long I'd be without AC. I was sold a state-of-the-art AC system that was allegedly much more efficient and would lower my electric bill. A Daikin DZ18VC0361 with a DV37PECC14 Air Handler. It's an 18 SEER 3 ton unit and I have a 1,500 SqFt home. What I have is grossly less efficient and my electric bill is 10% higher. They arrived at 9:30am, left at 11:30pm. The next day the AC ran all day long. They returned and saw that they had forgotten to connect some ductwork. A couple days later the AC was still running all day. I was now using 2 dehumidifiers that I emptied twice a day. They returned and discovered another section of ductwork had been torn open and needed to be replaced. I had to pay for that and they replaced it. A couple of days later the AC was still running all day and couldn't catch up until late evening. They returned and checked all the ductwork and sealed all the ductwork. They corrected some things found by the inspector. The inspector returned and said the Air Handler was leaking cold air into the attic. They allegedly fixed that, checked everything. The AC still runs all day, can't catch up until early evening. In order to maintain 79* the unit has to be set at 74*. I was able to maintain 45% humidity using 1 dehumidifier that I emptied once a day. Currently I am am unable to maintain 45% humidity using 2 dehumidifiers that I empty twice a day. The inspector returned, along with the new installation manager for Cornerstone Pros. The air leak had apparently been fixed. However, the inspector found another problem. Three weeks later and haven't heard a word. To be continued. read more

Highly recommend Jerry. I have called on expert electrician Jerry twice now, as he does excellent work! He goes above and beyond. Also, just a nice guy. Put in an outlet for us and repaired my hall light on his first visit. Second visit he replaced all my outside lights. He cleaned up all the old caulk and replaced the fixtures lighting up my driveway. He also replaced my back patio floodlights with cool LEDs. If you want a guy who knows what he is doing ask for Jerry. read more

I called and requested a plumber service since two of Kohler toilets water never stop running. In 2022 I had same problem in the other toilets, because I have 5 bathrooms. I told them exactly the same in detail, in 2022 my friend replaced the Kohler toilet valve kit I bought from local Home depot for about $20.00. Now the valve kit goes for retail $21.97 + Tax. In short: the needed parts less $40.00 because they would get the whole sale price. Anyway, the dispatched plumber asks us for $500.00 after he applied some sort of discount. After we found the price highly unacceptable, of course, we refused the service. Then we had pay $39.95 for their service call. However, if the person who answered the phone would tell me their price, after I told her what we needed to be done. After all, I could buy two new complete Kohler toilets for less than $500'00. read more

We had a flood in our Condo which flooded our electric panel. The power had to be turned off until we got a licensed Electrician out to make sure it was safe to turn back on. As we all know, water and electricity are not a good combination. We found Cornerstone on YELP. Since it was a Holiday weekend, we were forwarded to an after hours message center to schedule the service call. They were prompt and efficient. On the day of the call, we received periodic updates on the technicians location for his ETA. Chris was very professional and was able to service our panel and check out our mechanicals. Pretty affordable call. read more

Customer service is huge for me, and I was really impressed by this company. Both of my AC units went out on the same day (when a different company was performing maintenance). I was scrambling to get quotes and get the install done. Everyone I talked to was friendly and helped me as best they could. I felt like everyone really cared. Matt did the quote and was so knowledgeable and friendly. T.J and John R. were the installers and they were considerate and kind, and ensured everything worked properly. The brand was not one I was familiar with, but I came to learn that was just in the US, and that they were huge globally. I was able to get better functionality than if I had gone with another provider's Trane units. We have now had the units for a month and they are so quiet, and are definitely cooling just fine. The one suggestion I would make to you, if you need a loaner unit, ask them to give/put in the ventilation duct. The person who delivered it may have just forgotten this. Overall, excellent experience, and I plan to use them for my future AC needs. read more

Update this company had responded, but after some back & forth about if they pay their service techs commissions / bonuses for the extra work they find / sell. Cornerstone deleted that part of this review. They never answered the question, but I did find out from one of their people their techs are in fact paid to find services to sell you. Like in our case the tech said we had mold in our air handler & needed a very expensive UV light to make the air in our home safe. I climbed the ladder to look myself & there was no mold. The bottom line is when companies pay service techs to find work to sell it often promotes an environment where unneeded work is recommended. read more

Highly recommend! This is the second time that I have contacted your company for help and again you don't disappoint. I was impressed by Tim's professionalism and the way he took his time to explain things to me. So much appreciated. Thank you again read more

Ive decided to update and condense my previous review. Cornerstone was hired for a repipe and I was left with numerous issues after. While they did address and correct them, it did take them more than one visit and the correction was less than satisfactory. I feel the job was done just to satisfy my complaints and not to go above and beyond. I initially dealt with Miguel who was very friendly and helpful; he was empathetic to my complaints and tried to quickly resolve them. The reason I am giving two stars instead of one is due to Miguel's excellent customer service and a small refund I was given (it was less than I requested). read more

They came out to assess my plumbing. I needed a toilet float.. asked the cost and was told 130.00. Ummmm I paid 200 for the entire toilet. Had them look at an outdoor faucet and was told 300-400 for the PART!!! It's a normal faucet!! So I said thank you, I'm not interested, the tech (who just threw out these costs....never looked anything up) told me "don't shoot the messenger". I then asked him again to leave. There are too many small businesses to support during these hard economical times. read more

They couldn't give me a ballpark estimate to install an RO system, which should be pretty routine. They insisted someone had to come out and I had to pay for them to come out - just to get an estimate. I found another company to give me a ball park estimate before coming out so I went with them. When I tried to cancel my appointment a day in advance they gave me real attitude and said they would "try to cancel it". I had to tell them they can try all they want but if they send someone out I'm not paying for it or answering the door. They finally called me back and were able to miraculously cancel my appointment. Eeek. Working with them could have been a nightmare... read more

These people are such pros that they charged me $750 last October to fix my system and promptly wired both the outside fan and compressor backwards. When the outside temperature finally got hot enough for an extended period of time, it finally stopped working on April 29. They wanted to charge me a trip charge to come check it out which I am glad I refused to pay since I have serious doubts they would have admitted their error and like found other issues for which they could charge me. After reaching their escalation department I was told that since I had another AC guy come out instead of giving them a chance to check it out, they would not reimburse me for his fee to fix THEIR ERROR. They claim to have pictures of their work from October, however refuse to share them with me or admit the error. I am done with them and strongly advise you to find another service provider. read more

We've used Cornerstone for a number of years now but will not be calling them back. We have a warranty on our ac for parts but the charge for labor has skyrocketed. Our last bill was $799 dollars for just a couple of hours of labor. When I called the office to ask what the hourly charge is, she told me it was up to the technician. Then she said she would have someone get back with me, that was three days ago and still no phone call. All I can say is " Goodbye Cornerstone" read more

Purchased new system last year and have had at least 6 service calls since install. Once again my system is not working and my home is getting hot, which isn't good with a baby in the home. Stay away. read more

We were looking for a replacement water heater for our home. We searched for references and never really got stellar recommendations for anyone. We settled on Cornerstone based on a recommendation who was impressed with the individual who did the service. Unfortunately we we did not have that individual. Our experience included misunderstanding of quotes, missed appointments for installation and ultimately a tardy arrival upon rescheduling the installation. We were hoping to find a solution for all home repair needs but unfortunately this is not going to be Cornerstone read more

Came back from a 7 day cruise to find out that our upstairs AC unit had stopped working. I was very nervous about how things might turn out as the unit is around 7-8 years old. I tried some basic troubleshooting but no luck. Rob W. was the tech that came out to our home and within 15 minutes he had diagnosed the problem; a frog had crawled into our drain line and plugged up the works. Cornerstone could have easily told me the unit was DOA and I would need a replacement but instead, Rob W was very honest and charged us only for the work performed to get the pipe cleaned out. Could not be happier with their work, will definitely use again in the future. Thanks! read more

I was in panic mode when I noticed a wet spot on my ceiling! After narrowing down the issue we contacted Cornerstone Pros. The very next day (it was late when I called) Quenton came out and after climbing around in the attic he figured out what the problem was. Quenton was very professional and very helpful. He turned a very stressful situation into a very positive experience. Thank you Quenton and Cornerstone Pros for taking care of us with the best customer service experience I have had in years! read more

Where to start? These ladies and gentlemen at Cornerstone have never let me down. I first came to them several years ago after one of their competitors wouldn't make right on a problem that never seemed to end. They fixed my system then and they have just done it again. Scott came out first and spent 5 hours running down the probable cause and when he needed a fresh pair of eyes, he made the call to the office and got Brandon and, their newest technician, William out on the same day even though they all had full schedules. They finally found the problem tucked away deep in the duct work where a bunch of wires were melted together (their best guess was from actual construction, which I would have to agree with that assessment, as we've had weird problems since we bought the house. After they finally found the problem, they fixed it in about 30 minutes. Courteous and professional all the way! I would also like to give commendations to Matt and James for services in the past that I've never done a review for! I know that no company can be all things to all people, but give Cornerstone a chance to earn your business, I don't regret it for a second! read more

I had said originally that I had not heard from them, but I was mistaken and confused them with another electrician. They did in fact contact me after my inquiry. I chose not to pay them $39 for an estimate as I feel that an estimate should be no charge. It does not seem right to pay someone for the opportunity to earn your business. Before you have ever even talked to them. That is my opinion and I respectfully moved on. read more

They do electric, plumbing, a/c Very professional, very knowledgeable. Appointment receptionist very polite. Overall a great reliable company! read more

We are the 3 family - get 3 estimates and ke the lowest RESPONSIBLE bid. We needed bathroom commode work in our 80's ranch home. We had an idea of what we needed but decided to go with the 3 method and not DYI as we will be done a full house reno in the next year and will need contractors we can trust. Cornerstone fell off the top of the list with a fix or replace cost for a bathroom toilet at $576.00! The lowest RESPONSIBLE bid for a new toilet, installed, flushed and ready to go came from a Lowe's contractor for $215! We highly recommend the 3 Method - had we gone with our first call (Cornerstone) we'd be out $285! Best of all, we now have a responsible plumbing contractor for the BIG remodel - whew! read more

We do not recommend Cornerstone Pros. They have made 2 trips to our home in the last week in a half trying to fix an electrical issue with our sump pump to our lift station. The sump pump worked fine when we ran an extension cord from the house to it, so we know it's an electrical issue. They charged $100 on the first trip out. Said they fixed the issue, it was wired wrong, and also said that since they fixed the issue we couldn't run an extension cord to it anymore. Shouldn't be a problem right?! Since the issue is fixed...well it wasn't. So we call back, they don't get us on the schedule for the same day, but the following day, now keep in mind our waste is bubbling out of the ground anytime we use water in the home. They come back out yesterday - and mess with the wiring again... they get the red light on the lift station to light up and says it should do that when it's working. They leave. The red light stays on until we go to bed and we manually flip the switch cause we are a little concerned why it was on for basically 4 hours straight and don't want a fire to start. We flip the switch back on this morning, take showers, and the waste is bubbling out of the ground, red light is on, but the pump isn't running. I call Emergency Services - they say they can't get someone out until Monday. I explain that is not acceptable - I need someone out today. The dispatcher states she will talk to her manager and someone will call me right back- that was now over an hour ago...I call emergency services again, and the only thing this girl can do is take my message and forward to dispatch and tell me they will call me back. So just to recap - all they've done thus far is take $100 of our money - force my husband to miss 8 hours of work between the two service calls, and take away our only work around we had. Oh, and give us a red light that stays on constantly! The only way I'd recommend this company is if you want to be inconvenienced in any way or enjoy poor customer service this is the company for you. I'll add back to this review as I get more details! *** Update - They FINALLY called my husband to advise they can't get an electrician to us on the weekends. Agreed to give us back our service charge. read more

What a rip off. They tried to tell me that I need all new piping and a new faucet for my kitchen sink. They never even looked for the source of the leak. They wanted me to purchase the parts and they would do the installation for $450! On top of that they charged us $50 just to come and look at the situation and did not find the source of the leak. I took the faucet apart and found that the source of the leak was a loose nut. Used a wrench and some nylon tape and it is all fixed. I would not call them ever again! read more

I had an a/c tune-up done with Jahn and he was very professional and helpful. He took his time talking with me about our a/c quirks and then examined the two units carefully. I feel like I got a lot of valuable advice. I highly recommend Jahn at Cornerstone for your a/c concerns. read more

Very disappointing. I had called to schedule a service as my sink was clogged up. I was told I would have someone out to my house the next day in the afternoon. Well, that comes and goes. I call around 7:30pm to see where my tech is and they said I was next in line. I call again around 9:40pm and got the same thing " you're are next in line and they will be there by the end of today". Well needless to say I never received any phone call , no updates or anything for this appointment. I ended up calling this morning and the receptions couldn't give me any reason as to why this happened. That she can see I was scheduled for yesterday. I canceled my appointment and I went with Roto-Rooster. They came the same day and fixed my plumbing issue. read more

I had a new Diaken A/C system installed on 6/9/20. Today is 6/26/20 and it has died now for the third time. I called and was told the next available service would be in five days! Obviously, I did not accept this. I am waiting now for a technician in the heat. Additionally, my city inspection failed so I have had to wait for an inspector a second time after waiting for the technician to repair the system and get it to pass inspection. Oil was dripped through the stairwell and top floor of my condo as well as the elevator and lobby when the old unit was removed. My hardwood floors were scratched by the installer so overall a truly poor experience. read more

I've been managing about 30 rentals for over 25 years, and have always found it worthwhile to maintain a win-win relationship with vendors. Cornerstone seemed like a respectable outfit, based on reviews on Angie's list, so I started dealing with them exclusively in 2013, joining their service club, and purchasing two brand new Heating/A.C. units, a Lennox and a Daikin. I found their technicians to be consistently pleasant and knowledgeable. Unfortunately, due to a sequence of three unrelated mistakes on their part, we came home to a ruinous flood in March, 2016. Cornerstone was very prompt in bringing in a competent remediation company (although this was extremely disruptive at a very bad time for my family). The real problem involved the ruined hardwood floor. Because this particular product is no longer available, we accepted the closest match offered. Though it has since proven unsatisfactory, we did agree to it and thus accept that responsibility. Over the next seven months Cornerstone sent numerous contractors to repair and paint walls, and to replace flooring and trim. Each of these repairs involved additional disruption. There are several remaining areas of damage, but we have not brought it up, preferring to avoid further disruption. There were several stages in this process where I had to call Cornerstone to get the next task accomplished. I was never abusive, but always polite, as a matter of principle. In October I received a letter politely informing me that Cornerstone was firing me! There is no signature, no apology for the misery inflicted upon us, just the implication that I have been unreasonable. Furthermore, the company suggested as replacement is not even a Daikin authorized distributor! I've been around long enough to realize that stuff happens, mistakes will occur, etc. (though these three are bordering on incompetence). But it is just such situations which reveal the true character of the parties. read more

Phenomenal experience. Serviced our first home with a/c work, and plumbing over the years. Turned it into a rental and they've been keeping up the maintenance for the past two years. All the staff I've encountered has been knowledgeable and courteous. Always give fair pricing and discounts to club members/ long term clients. Never had to question or worry about the quality of work and we live in another state away from the property. Professional, timely, work done right the first time around. Listed as my vendor with our property management company. Nope their not cheap but neither is their quality of work/ service. You get what you pay for! Extremely trustworthy and Highly recommended. read more

This is the first time that I have had a problem with Cornerstone, but it's been continuous and unresolved. Wednesday Ricardo came in and replaced the coil in the handler. A few hours after he left the AC completely shut off. I called the office and he came back out. He said he fixed it and an hour after he left it shut off again. I had to pack up my family and dogs to go sleep at a friend's house since the office couldn't send anyone out until the morning. Thursday Kyle came out in the afternoon and attempted to fix it as well. This time the AC turned off early in the morning. Friday morning I called the office again and Josh came out. He also attempted to fix the problem....the AC has again gone out and we have all packed up and had to leave our home again. We called the office and they said they could send someone out again Saturday. Saturday (yesterday) we again had to cancel all plans due to Cornerstone not being able to tell us a time when the tech would be able to come out. Garret came out in the late afternoon and found that when Ricardo originally replaced the coil he cracked the pan underneath. Garret told us he would have to wait until Monday to call in a replacement for this part. In the meantime, he reconfigured the piping so that the water that was dripping out of the unit would not fill up the pan and the AC would stay on. He let us know the only way it would turn off again was if the pipes were to clog and he didn't think that was going to happen.....4am this morning I again have no AC. This has been inconvenient to say the least. I have had to rearrange my schedule 4 days to be home (with no AC) when the tech comes and haven't even been able to sleep in my own home for 2 days. I don't know why this issue has not been escalated to someone who can resolve it. I'm frustrated with the lack of urgency and capability to resolve this issue. I called the emergency line this morning and spoke to John, he told me that he could schedule a tech to come out on Tuesday. This is not acceptable, this was a problem cornerstone created and now I have to wait 2 MORE days without AC. read more

Did not fulfill service contract guarantee. They advertise "24/7 Emergency Service". I even have a signed "Gold" service contract with them promising a "24 Hour Service Guarantee". I had a plumbing emergency coming home from work, promptly called them and was told someone could come out 4 DAYS later. Their "discount" you're supposed to get is also nothing special, they give you set prices which you can easily match or beat with their own coupons. Don't waste your time or money. read more