I think this is number one company in north Virginia I…read morechanged my house AC Two units they did amazing job Wonderful people high quality service very knowledgeable and very respectful to the customer to keep them satisfied Iam glad to did business with them. Thanks

RES installed new HVAC in September 2021. Freezing temps last night and my heat wouldn't kick on…read more Needless to say, it's cold in the house. Literally wearing a sweater and two sweater wraps. New HVAC filter, reset breaker. Thermostat batteries are fine. Still not kicking on. Sent Yelp message to RES because they have always been quick to respond. And they did this time as well and the woman who gave me a call was nice and tried to help. Pretty disappointed that they can't quickly swing by today. From what I've read, it's likely a dirty flame sensor or the ignitor switch (neither of which is a long job - I just don't have the tools). HVAC less than 5 years old, so parts are under warranty with RES; however, I had to call someone else. Bottom line: Someone else is coming today, but I could end up paying for parts. Kind of feels like my current needs weren't lucrative enough for RES to make a concerted effort to swing by.

The service I received was amazing. They came same day and the technician was very knowledgeable…read moreabout my system.

Service was great & professional. Fast response to fix…read morewasher. Very quick in determining the problem.

I'm leaving a review based on my prior experiences with KCS (have used them since we purchased our…read morehome in 2020). We got their base maintenance plan with 2 inspection services each year, and used that for about 3 years (no real issues to fix.) During one inspection in 2024, the tech realized that our furnace water pan had filled (but not so high it shut off yet) and he helped identify the problem and luckily was able to fix it the same day (no parts/ charge.) He suggested in a non-pushy way that it really may benefit us to up our plan to the higher one (almost double the cost/yr, so a little scary) because we're probably entering the zone where larger repairs may start for our furnace and the plan covered most of the types of parts that would be in a significant repair. He seemed knowledgeable and trustworthy, so we decided to at least do it for a year. We were very lucky, because the next year was the epic winter - the furnace went out/ our YouTube tricks didn't get it running, and the red plan ($500/yr) meant we pushed to the top of the queue and got someone out when the temp was dropping in the whole house. Apparently the part needed to fix it was over $1,000 (not including install), and that was covered in our plan. So that proved the value for us! I know they were recently acquired/ merged with FH Furr, so it appeared that our online requests for service on the KCS site were not actually being seen/ addressed. When I got time to call over, the former red maintenance plan was unfortunately no longer sold by this new company. I got the "gold plan" which includes 2 HVAC inspections, a plumbing inspection, and an electrical inspection for honestly a price that is so cheap I'm worried it's going to be an upselling scam :/ so I'll update this as needed in the future to help others who may wondering if this new company will have the same service quality as pre-acquisition.

My elderly mother has a service contract with them. Her 4th floor condo is 89° and was told at…read more10:30 am yesterday that someone would be out that day for diagnostics. We waited for 11 hours, then called and we're told that despite partnering with FHFurr, they were short-handed and someone would be out for the first appt 8-9 am today. It's noon, there's a dangerous heat advisory especially for a 93 yr old, and we haven't heard anything

C.D. Shanahan's is a fantastic family owned business. We have used them to replace our water heater…read moreand a new AC/Furnace unit. Our AC started having issues cooling Thursday night. Called Friday morning and the receptionist was amazing and got someone to our house that morning. Full diagnostic told us the compressor went bad. Our unit was 13 years old, so it was about time for a new system. We decided to replace whole system as replacing a compressor is quite expensive basically half the cost of a new one. Mike came that night to price out a new system. I got two quotes from other companies. But decided on Shanahan because of their reputation, service as well as pricing. Talked with Mike and Conner (the owner) about our options and they came on a Saturday to install even though they didn't have an opening until Thursday. The owner himself came with a couple guys and replaced our system. They were very polite, did excellent work and we were back up and running. Plus they had very affordable pricing. These guys care! Use 'em. We loved our experience from start to finish!

C.D. Shanahan's technician visited my place and did diagnostic, but I had move questions about…read morecompressor and refrigerant pressure and sent an email to C.D. Shanahan's email after receiving quote. But then I did not have any responses for my questions for a week. Maybe, they are busy and did not read my email yet. Brandon's diagnostic was great, but I am not getting responses for my emails before making my decision.

The folks were professional helpful and fast. I appreciated their explanations and adviceread more

My A/C stopped working on the hottest day of the year. Residential Express replied quickly to my…read morerequest and fixed it at a very reasonable cost the next day. So grateful for them!

We had a home care agreement type thing with another company who came out to look at a problem with…read moreour furnace and declared it dead. They quoted me $7-10k to replace it. A friend recommended Fauquier Mechanical to come give us a quote as well, so we'd have options. After being fit in same-day, they proceeded to not give us an estimate... because instead they FIXED THE DANG PROBLEM! Saving me a HUGE expense and hassle, and couldn't have been more lovely about it. It should go without saying that my previous provider is fired, and we're staying customers of Fauquier Mechanical! Thank you!

We recently worked with this company for the first time, and were very pleasantly surprised and…read morepleased with their professionalism and knowledge. Derek resolved our heat furnace issues after hunting down the cause of the problem, and we were so impressed with the way they handled everything that we signed a new yearly maintenance/service agreement for both our upstairs and downstairs systems. We look forward to working with them as needed in the future.

Ashburn HVAC also goes by the name, Snell HVAC. Same company…read more They did an HVAC inspection on a condo I manage in Fairfax. They were very professional- pleasant and efficient on the phone, they came on time, did excellent work, and charged a reasonable price.

The worse service in Northern Virginia. Never returned calls when I asked for a manager. Do NOT use…read morethem

Quick repair, was able to come in during the holidays, even though it was same say and I had to pay…read morea bit more it was worth it.

If you look at my review history, I am very quick to give praise to businesses and grace for…read moreoccasional mistakes. However, the mis-management of this company combined with the lack of attention to detail of the majority of technicians we've had out these past two years has led to repeated customer service failures. I've captured more detail details below if you want more than an overall summary rating. Be forewarned their technicians are nice, and at the end of the appointments, which may only be diagnostic and not actually the fix because they need to wait for parts and then to come back (which has been where the majority of our issues have been), they ask you to give them a five star review so the technician gets a $25 performance gift card, which skews overall service ratings. Most recently our 4 year old, warranty covered, HVAC broke again (4th time since a company bought out by FH Furr installed and FH Furr fixed 3x before). It happened on a Saturday night, and we called first thing Sunday morning. They told us the technician who had the part we needed was off that day so we had to schedule for later in the week. We were out of town 4 days, then the morning of our apt, 45 min into the arrival window, we got a call saying the technician has the wrong motor, they will have to order a new part, and then when they get it in a few days they will call to reschedule. This our final straw but keep reading for more history. Something just like that happened before on our HVAC. But in that case they ordered the wrong part so we had to wait for the first part to come in, then wait for the right part to come in. During another HVAC fix they identified an issue, ordered a new part, installed it, then ID'd a second issue. I appreciated that the technician was forth coming that they should have caught that during the first diagnostic call and apologized we would have to wait for a part again. The fact that they took ownership would have made this fully forgivable if we didn't have so many other issues. They also ordered a part for a fix that was supposed to come in in a few days but I called a week later and it still hadn't come in. I called 4-5 days in a row, then finally I asked to speak to a manager and they said they can use a different, universal part instead of continuing to wait. It wasn't clear why there was such a huge difference from when the first technician said the original part would come in vs the actual timeline, but I suspect based on some of my first calls that the part might not have been ordered at all until I first called to check on it. We had a toilet not fully flushing upstairs and they quoted us $200 to fix it, but recommended the toilet itself may continue to have problems because of the design unless we replace the whole thing, so we should consider that long term. After half an hour on YouTube, and an $8 part from the local hardware store, my husband was able to fix it himself and we haven't had an issue again in the last 6 or 7 months since that issue. A theme you may pick up on is how often I have had to call them for follow up. Some of the technicians will admit that if you don't hear by xx day from dispatch, you should call them and ask if your parts have come in yet. We have definitely found that to be true on both HVAC and toilet calls. In our experience it could also be hours before a manager calls you back if you ask to speak to one. We bought the maintenance membership so we have tried to make this work, but at this point I can't waste anymore time micro managing nor can we rely on them to be responsive or do a job right. Save yourself the stress and money, avoid this company.