Cory and his team are First Class! True steely-eyed professionals. After declaring my 21-year old Goodman unit as beyond useful life in March 2026, they installed a new Lennox unit. They gave me a fair price, and promptly-scheduled, one-day installation, during which Cory resolved some screwy wiring done when the original unit was installed. Now it's mid-June 2026, and I'm delighted by the new HVAC. It's handled numerous heat/cool cycles nicely, and I'm confident that it's the right answer for the hot weather yet to come. I fully recommend SCS! read more

Cory and his crew are top-notch. Unlike many, many HVAC companies around here, they're not out to rip you off. They respond quickly, they give you a good price and they do good work. They replaced my two old heat pumps after another, much larger HVAC simply said they couldn't do it. Call SCS first. read more

We recently purchased a home that had a 34 year old HVAC system. We knew it needed full replacement so we researched 6 companies, compared quotes and products and decided to go with SCS. SCS hit every mark we were looking for and we couldn't be more pleased. They just completed the install a few minutes ago but I wanted to leave a referral for anyone who's AC might be going out in the heat this week so you know who you can trust, especially if you need to move quick on getting a new system. We took almost 2 months. I was nervous about the high ratings I saw on yelp and thought that either they figured out how to rig the system or they really are that good. Thankfully we found out they really are that good. I felt confident in their work, the product (We went with Lennox AC-SL18, Furnace - SLP98 and the S30 iComfort thermostat) and quality of service from beginning to end. I've provided some before and after pics but know that the furnace isn't completely hooked up yet because we need Washington Gas to run the lines and then SCS will come back out to finish the job. Feel free to send me a message if you have any questions about the service we received. read more

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Had hidden fees that were found out post-service. Claimed that it was their fault and offered to waive a future service call fee. I reached out to take them up on that offer a few years later and I got this response: "While we appreciate you reaching back out, unfortunately we are not able to do any service on your unit at this time. We recommend XYZ or ABC. We have action, but it is going to cost money, so we will not be doing any business for you." Clown show. read more

SCS came to do a routine spring HVAC tuneup. The service charge was $95 plus $65 for a pound of refrigerant. The technician seemed knowledgeable. He came during the promised 3-hour window - this is worth a lot to me as it's hard to schedule free time for tasks like this and a company that sticks to a schedule is really respectful of my time. Update 8/20/19: second experience with SCS was also positive. I needed a capacitor and relay replaced. They showed up on time (2 hours after I called, on a sweltering August day). Steven was diligent and polite, got the system working again, and it cost me a little under $500 which didn't feel excessive for the amount of diagnostics and parts required. Five stars! read more

BLUF: SCS is responsive, cost-effective, and customer oriented. They have become my go-to for any heating and cooling issues for the house. My AC had blown out a year after I had another contractor the previous year come and "repair" the exterior unit. I reached out to a bunch of contractors and many had long lead times (5-10 days before an initial appointment and assessment), and then the additional time to order parts and install. SCS was unique and immediately messaged me back and came over to the house to inspect the issue THE SAME DAY at 8PM! That's some serious customer service. Cory was great, friendly, and responsive. Within 2 minutes of arriving to the house, he had identified the issue and laid out multiple repair options. There was no upselling or forcing to replace the entire exterior unit. We agreed on going the path of least resistance. Cory came back the very next day, installed the part, and had AC blowing cold air again making the house bearable. 2-weeks later, the repair is holding up and the house is nice and cool. His prices are fair and he has superior HVAC knowledge, which gave me the confidence to use SCS. When entering the home, they also put on shoe covers to not track dirt into the house. Post repair, they also performed a quality assurance test, measured temperatures inside the HVAC vents relative to ambient temperature. His invoicing system is also clear and easy making it easy to document for tax time. Highly recommended! read more

Yelpers came through!! Thank you!! I woke up this morning in a FIT of SWEAT...I assumed I was just going through "the change"..until I noticed by mid day I was still "glistening"...I jumped on Yelp and found this gem ...Corey showed up 3 hrs later and fixed that chyt!! I'm no longer glistening..thank you SCS and Corey! read more

I switch over from heat to air conditioning, two days ago. No issues as usual. Any of my Northern Virginia friends need HVAC work? I recommend SCS Heating and Air Conditioning, Inc. Quality work and very reliable equipment. A few of my neighbors use other companies and I see those companies come out to fix or perform routine maintenance only for them to return the next week to fix something else. I have not had that experience with SCS. They come, they install and I don't need them for years. After a few years, I do call and asked them to check it out just for my peace of mind. Small service visit charge and then I wait another few years. SCS has saved me time and money over the past 20 plus years. read more

I chose this company based on the amazing reviews. I needed a second opinion and boy did they deliver. Here is the story... I had ANOTHER company (one of the big guys you see all around the beltway) out to diagnose a problem with my A/C, this may sound sexist, but I felt like I was being taken for a ride. (I am a woman--these two ppl were guys) 'Man-splaining' was rampant. I was even called "sweetie" Surprise, surprise, I needed an entire unit at the cost of several thousand dollars. Needless to say, I was turned off. Welp, I called SCS and Corey and his team came out. Now, I didn't tell them anything so I could run a test between the two companies. Corey told me that I didn't need a new unit and in fact, needed some adjustments to the tune of a few hundred. When I told him what the guys said, he was so angry, like personally angry. He told me before taking over this business, he worked for the same company and roping customers into new units who didn't need them was part of the policy. I am SO glad I called SCS!! I am back in business and will NEVER use anyone else ever again! read more

This is now our second time using SCS and it was just like the first, amazing. Our ac had to go out on the hottest day of summer so far. We called at 5:45 in the evening and they sent Andrew our fist thing in the morning. He was quick and not only fixed it but explained what broke and what we should expect next. In our case we are probably looking to replace the unit in 4-5 years and we will absolutely use them for the replacement. It is so hard to find an honest hvac company and we are so happy we found SCS. read more

I'm giving 5 stars because I can't give more. To put it simply, Cory has saved my butt numerous times. The builder-grade junk HVAC that came with my house needed to be replaced but I wasn't in a position financially to replace it. Cory kept it running for me for YEARS - much longer than he should have - coming out on Sundays and late in the evenings because of various issues I was having with my unit. He kept the place cool in the hottest parts of summer and never left us hanging "waiting for parts." When I finally had the coin to replace my HVAC, naturally, Cory got the call. He did the install by himself in a single day and, as advertised, the cost to heat and cool my home decreased dramatically. His install was neat, clean and doesn't look "jury rigged" at all. I've had the new HVAC for about 3 years and haven't had so much as a single problem. I can't recommend him enough: he's friendly, honest, knowledgeable, hard working and trust worthy. If you're using any of the other ripoff artists in the area, you're wasting your time and money. read more

We have heat, just saying. SCS HVAC knows their stuff and came through on a somewhat complicated heating and air system. Nest thermostats can cause some HVAC connectivity challenges but SCS has it well in hand. Thank you Cory, Charles, and the rest of the team for sticking with us. read more

I typically do not leave any reviews on Yelp but after my recent experience with SCS, it's the least that I can do. My boiler system stopped working a few days ago and left my house without any heat. I called a few local companies but didn't make it very far. I either was on hold for an eternity, couldn't speak with a tech, or they didn't work on my type of system. I finally came across SCS on Yelp. After reading the great reviews I decided to give them a call. I'm not sure who I spoke to but the guy was a true professional. He was very polite, caring, and he treated my call with the utmost urgency since I didn't have heat and the temp was dropping below freezing. As promised, a few hours later I received a call from one of their technicians (Corey) notifying me that they will be arriving within the next 30 minutes. Once Corey and the other Tech arrived, I knew I was in good hands. As Corey was diagnosing the problem, he educated me on how the system works, what he's doing, etc. He answered all my questions and assured me that they are not leaving until my problem was resolved and I had heat again. It was quite clear that Corey was NOT trying to take advantage of my situation. Shortly after, the problem was fixed and I had heat again. Corey and his teammate checked every radiator in my house to confirm that there are no air pockets preventing the system from running efficiently. Corey called me the next morning to check-in and thank me again for my business. I was in a quasi state of shock as I had never had such a good experience with a repair technician. It's good to know that there are still some good, honest, dependable HVAC companies out there. I would highly recommend SCS to anyone that is having an HVAC issue, needs year round maintenance, or is looking to upgrade or install a new system. read more

Glad I listened to my dad and got a second opinion. Saved me about 300 bucks on what the other (large corporate) company quoted. Plus Jesse was great, explained everything in laymans terms so I knew what exactly was going on. Great doing business with them! read more

I chose this company based on its yelp reviews and I am very happy I did. They were very quick to respond and had our AC fixed in no time. They actually genuinely cared that our office was hot as Hades and did everything they could to get the AC repaired as fast as possible and were very professional and upfront about costs etc. I really appreciate it when a company can give me a No crap assessment and are completely honest and upfront. We will definitely be using them in the future for all of our HVAC needs. read more

SCS is the best! Showed up on TIME, were quick to diagnose our issue and fix our unit. Have had both Eric and Cory out to our home over the years and have always been treated fairly and in timely manner. Much appreciated and would definitely recommend to anyone! read more

My experience with Jesse from SCS was exactly what I was hoping for. He was efficient but not too rushed while he diagnosed my HVAC, and took the time to share his expertise with me. I didn't feel for a moment like I was being swindled or oversold. He was real with me, and walked me through the pros and cons of various options, ranging from the most expensive to very cheap tweaks that will improve things a bit. I'm a weekend warrior do-it-yourselfer who is comfortable tackling most systems in the house on my own, but HVAC is one of those things that I haven't touched before and really wanted an expert. If you're looking for someone who will be straight with you and not cry wolf about your system (unless they need to of course), give these guys a call. read more

Highly recommend! My AC stopped working last week, and with an infant in the house, I wanted to get it fixed ASAP. After calling a few other companies, getting either no response or no room in their schedule, I called SCS. Not only did they come the same day, but understood the urgency with a baby, and were there THE SAME HOUR I called! Cory explained everything he was doing as he was doing it, and gave me detailed instructions on what to do should I ever have this problem again. SCS also had prices that were below what I expected, and I was NEVER upsold on products or services. For a fair, honest, and family-oriented company, SCS is your jam! read more

I used SCS for years. Each year Eric came to my house to look at my AC or heating problems, and each visit cost hundreds of dollars. This week I discovered, accidentally, that his diagnosis of my AC problems was completely false. We do NOT need a new unit. There is no freon leak which would cause us to need a new unit or to continue to have Eric add freon at great expense every summer. Two different contractors showed me that we have a simple leak due to a PVC pipe being attached wrong. I can prevent the AC from shutting off myself by emptying the pan underneath the unit. If the leak continued and rusted out the pan, we could have had a massive leak. All is obvious to the naked eye-- to someone who knows AC units. Either Eric knew about these simple problems and didn't tell me, or he actually didn't know. It's shocking that he told me and my husband a completely different story for several years. read more

SCS Heating & Air Conditioning SCS offers the VERY best heating and air conditioning service in Northern Virginia. Our AC broke on one of the hottest and humid days of the spring/summer. A highly skilled technician arrived at our home on the same day to diagnose and repair our malfunctioning unit. He was extremely knowledgeable, professional, patient, friendly and explained clearly so we could easily understand the specific issue. Our problem proved very complex, however, SCS successfully repaired our unit. Thankfully, we did not have to replace it. We highly recommend SCS Heat & Air Conditioning! read more

AC went out just as it hit 95 degrees. Went searching for HVAC companies and ran across SCS. I had a different company scheduled, but cancelled them and went with SCS since when I called, Cory picked up, and spoke to me about the problem, and actually explained things to me. As I described what happened, he described what he thought the problem was based on description, and I scheduled for the following morning. Although their service call is a bit more expensive than the other companies, I went with them based on conversation. He even called me back that evening, and discussed the problem further as we believed it was a capacitor, instead of the motor. Jesse arrived the next morning on time, and opened the unit. It was the capacitor. He showed me the issue, replaced it, and checked the pressures. The AC was working and cooling, however the refrigerant was a little low, which he didn't have, and said he would be back later that day. He arrived as expected, and much to my disdain, the motor has stopped working sometime between the capacitor replacement, and him coming back. He ordered an aftermarket motor on the spot, and arrived the next morning right on time, replaced the motor and cleaned the unit. No problems since. I was prepared for a pretty hefty bill since I had the capacitor and motor replaced, however just as Cory said, they would "make it as painless as possible". Because the motor was replaced, which was pretty expensive, he removed the Service Call fee. He worked out a few other things to bring the bill to a very reasonable rate. Will use them again in the future. read more

This is a hard review to write, but please read. SCS fell into my lap and I am so blessed that they did. My kitten went missing and it turned out that smell was telling us something. I called this stranger - Cory. He came by, I told him about the A/C floor register being off when kitty went missing and the smell. Understanding how upset I was and expecting the worse, I told Cory to call me: I would go to neighbor's apartment. 20 minutes later, he called. I met him, he told me the sad expected news. He said a part needed replacing. I asked when could he replace it and let me get my check book. He said he'd order it and I could pay for everything then. This man was so kind and understanding. As I was walking to the empty house - I asked him, could I please have a hug. I cried on his shoulder. When I pulled back, he was crying too. What a caring and professional man. Mr. Williams (Cory) thank you. And I hope this isn't too weird to put into a review, but wanted customers to know that you really do put your heart into your work. read more

I highly recommend SCS! After requesting a quote through Yelp for a whole home humidifier, Cory replied quickly offering information and a price. As a new home owner, I've been in contact with various companies for service and none have been as easy to work with and attentive as SCS. One other companies who commented that I might not be able to get one and/or did less than great work, I was pleasantly comforted by Cory's quick (and multiple) email responses to questions/concerns. I never felt like he was pressuring me into anything or trying to sell me unnecessary things. On the day of the installation, they were on-time and very conscientious about the work, asking multiple times about how I would like the tubing to be run and willing to take the time and effort to even run into the walls if I wanted (I didn't care!). The end result looked really great and Cory took the time to explain everything about the appliance. I will definitely be using them in the future! read more

I freaked out when my thermostat went blank and no air was blowing out of my vents (on a day when the high was 95 degrees). I contacted SCS and Cory went over a few things over the phone, such as making sure the furnace switch was on, batteries replaced, etc. When none of that fixed the problem, he was at my house within the hour and thankfully, it turned out to be a simple fix. He also went over how I could maintain my air conditioner to avoid future problems and actually lower my electric bill! SCS is definitely my go-to and I highly recommend them!!! read more

A surprise finding for me... I've used SCS in the past for a complete A/C install, I was very happy with the work then. The surprise finding is that Cory's team runs gas lines too! After I called and had another gas company come out and do the job incorrectly, Cory sent his techs over and fixed the issue, in about an hour. Our kitchen is up and running with gas thanks to SCS. read more

We have called SCS 3-4 times in the last four years for AC and heating maintenance and repairs. Each time they did great work on a prompt basis. No one tried to sell us anything we did not need nor were there any issues with cost. Workers were responsive and friendly. read more

We called SCS on a Friday afternoon to see if they would be willing to try to free a bird that had become trapped in our furnace vent. Their technician Charles came by after his scheduled appointments. He quickly took the vent apart, stepped back, and a hermit thrush(?) sailed through the opening and straight out the door. There was a loud scrabbling and a second bird followed the first. I was sure that was it, but Charles said "wait" and his camera showed one more. With a little more coaxing the last bird was able to gather his courage and escape. Thank you, Charles. Thank you, SCS. Great service and reasonable price, we couldn't be happier. read more

Cory and his team are awesome! Cory was very patient answering my many questions and evaluating all our options as we picked out the best HVAC system for my house. His team was able to install a new system within days, which was great. SCS offered very competitive prices. Cory has come back to check a couple concerns- within 24 hours, no charge or problem. Cory is super responsive via both phone call and/or text message. SCS is also super pet friendly! They were great having my dog around.I recommend SCS to anyone who wants a stress free hvac installation experience. read more

Cory is the best tech you will ever find. I was on a bind regarding my AC not working on the weekend and he took my call on a Sunday and thoroughly explained to me what I needed to do fix the problem. He took the time to go over with me step by step what I had to do. I recommend him and his company for all of your AC needs. read more

SCS and Cory were absolutely fantastic! Other than being a few minutes later than I had hoped, Cory was extremely personable, knowledgeable + fair & honest. He got my residential AC working properly in a few minutes. I would trust him and SCS to fairly price out a new replacement AC for my house when the time comes. And if my current AC needs attention before it is replaced, he will be the first one I call. Thank you, Cory...you helped cool down my house quickly when my old dog needed it most! read more

I used SCS to replace my entire $6,000 AC unit last summer because they were on my condo's preferred vendors list. I have no prior experience with full HVAC replacement, but it was fine I guess. I thought it a bit archaic/cheap that they charged 2% more on such a large purchase to pay with a credit card, but I sucked it up because I didn't have $6,000 emergency money. Now one year later, I scheduled a AC checkup/tuneup appointment for between 8:30-9 am. At 9:19 am when nobody called or arrived, I called their sole contact number which sounds like an office answering machine, not a cell phone voice mail. I asked where the technician was on my message. Then at 10:00 am, one full hour past the end of the service window, I called the answering machine again and cancelled my appointment. That's really rude to be an hour late without a call to indicate that you're running behind. It says to me that your time is more important than mine. My advice, get some cell phones in your life, answer them, and be reachable. And the 2% "swipe fee" is b.s. read more

I have used SCS, happily, for a few years. So, 2 yrs ago, when a BIG name company told my elderly father that he needed a new $6k+ A/C unit for his home, I told him to call SCS for a 2nd opinion. Eric Williams came out and FIXED the real problem, (a simple switch gone bad), saving my dad thousands! The A/C is still working great ~ thank you Eric. This summer, I came home one afternoon to water in the basement from my 20 yr old hot water heater that had died. I immediately called SCS. Cory Williams came to my house first thing the next morning, installed the new h/w heater, and left the area cleaner than it had been before the old h/w heater had blown. Plenty of hot water and the unit is quiet ~ thank you Cory! Most recently, I took possession of a home that I had to sell for the previous owner. I came to find out that the A/C unit was shot and the hot water heater should probably also be replaced due to its age. Of course, I called SCS and asked them to come take a look. Cory Williams came out and confirmed the A/C unit needed replacing, but that the hot water heater, while old, was still working. Wanting the property to be in top notch shape for a prospective buyer, I asked Cory to replace the h/w heater as well as the A/C. Within 2 days, I had both new units installed, working great, and ready for a home inspection. The home inspector commented that he'd never seen such a clean HVAC closet before. Thank you Cory and Victor, (and Jim). I am SO pleased with the work that SCS has done for me that I have recommended them to my family and friends, all of whom have thanked me. Their knowledge, professionalism, work ethic, and prices are simply ~ the BEST in the area! Thank you so much SCS!! read more

I am so grateful for SCS. When we bought our home, we knew we needed to clean out our AC unit. The first company that came took a look, said it was "too contaminated", and left with our money. SCS came on short notice and cleaned everything quickly, and they also did not try to push UV products onto us. Most recently, I came home to find out that my AC unit had stopped working and in the dead of summer, we couldn't do without AC. Cory again came within an hour and quickly fixed the pump that was broken. Thank you, SCS! read more

I contacted around 10 HVAC folks through yelp with the same request. Cory's response was excellent, so I went with him. He came very quickly (same day actually) and was fantastic! He got our main central AC unit up and running after a couple pounds of R22, and he even did a quick cleaning and diag on a big LG window unit we use. Couldn't ask for a smarter, intelligent and polite person to deal with. His prices are also wonderful. Now I know who to call for any HVAC issues, and will never deal with the 'big boys' again. read more

SCS is a great company! I had Cory come over to fix my broken AC Unit. He showed up on time and was very pleasant to work with. He had it up and running in no time and he did an awesome job. I highly recommend him and I will always call SCS for any of my heating and air conditioning needs! read more

We had a dead heat pump in the dead of winter and did a lot of comparison shopping with more than ten other HVAC companies to get a replacement. Cory provided a very competitive price for a full replacement of the system. More importantly, took the time to explain the trade-offs for the various choices in the hardware we might purchase. He did some research and suggested a brand that would fit our needs exactly, and quickly responded to several questions I had about the install. He and Andrew came the next day to install the entire system, checked it for proper operation and took care of us while finishing the installation the next day. I was very impressed by his professionalism matched with the "small business" nature of how he does it. Because he is the owner of the business and frequently does the work himself, you are dealing directly with a locally-owned business that stands by its work. Some of the larger, heavily advertised companies that I got quotes from have a lot more overhead and thus had quotes that were more than two thousand higher for almost the same system. It feels better to talk directly to the same person who answers the phones, provides the estimate, does the install, and provides the support for the system. read more

These guys are great! My AC went out a few weeks ago when it was really hot on a Sunday and they were out within an hour and got us up and running again. Their technician was very courteous and professional and seemed to be very good at his job, although he was kind of scared of the huge spider in my basement. I would recommend these guys to anyone you won't be disappointed! read more

SCS showed up on time, dressed clean, diagnosed problem, price it reasonably - less then I expected, courteous. Excellent service. Highly recommend. read more

After buying our house, we realized we had flooding issues in our basement and needed to do some landscaping to fix the issue. The landscapers requested we move the AC unit so they could build a platform to put it on, so that the land could be raised around it. What seemed like a simple job, was much more complicated than I thought. SCS was able to give me an affordable quote for the job, walked me through the process, and even took the extra mile to ensure the unit was cleaned out and working properly once it was reinstalled. The team was extremely friendly, efficient, and easy to work with. Highly recommend for anyone needing AC repair! read more

I called SCS at 9 AM one morning after my tenants called me to let me know the air conditioner was leaking water into the house. I spoke to Eric on the phone and he was so personable and talked about the different issues I may be having. Come to find out he is the owner of SCS. He told me that he could have someone out today and then called me back and confirmed a time himself which was at 10:30. Amazing for a 90 degree day and such a relief when you have water leaking into your house. Cory came to service my unit and was even early. He was also incredibly nice and explained the problem that I was having, why I was having it and what the solution was. I then asked him if he had time would he check the unit outside for me while he was there. He cleaned it out and checked my coolant. Not a problem at all. This is a family owned company and Cory is actually Eric's son. It is such a relief to use a family owned local business in a metropolitan area where it feels like everyone just wants to rip you off. Highly recommend SCS! Erin read more