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Cosmos Heating & Cooling Co
Appliance (Major Electric Appliance) - Install or Replace, Fridge, Freezer or Ice Maker Repair or Service, Electrical Baseboard or Wall Heater - Repair,
About us
Cosmos Heating & Cooling, a family owned business and now Best Selling author on Amazon of the following self-help book: Insider Secrets Of The HVAC Experts. They have been servicing the Northern Virginia area since it was founded in 1986 by Constantis “Gus” Christofi. The one man operation thrived through unending dedication, commitment to quality, and honest hard work. For the past 7 years, with his son George at his side, the family-owned heritage continues to afford its customers with unmatched service, excellence and skilled quality work. We Are Licensed & Insured and Service All Unit Brands. Additional contact name - George Christofi. Award winning.
Business highlights
Emergency services offered
39 years of experience
Services we offer
Residential, commercial HVAC installation, duct cleaning, maintenance & gas lines., repair
Amenities
Emergency Services
Yes
Free Estimates
Yes
Accepted Payment Methods
- CreditCard
Reviews
4.8304 Reviews
| Number of Stars | Image of Distribution | Number of Ratings |
|---|---|---|
| 92% | ||
| 3% | ||
| 2% | ||
| 1% | ||
| 2% |
Showing 1-25 of 304 reviews
Tyler A.
Aug 2024
Quick, efficient, and professional!
Eric P.
Jun 2024
Came on time with the replacement unit. Did not charge me a visit fee like others wanted since I told them exactly what I needed. And was half the price of my regular service contract company. Highly recommended.
Response from Cosmos Heating & Cooling Co
"MR. [Member Name Removed]. Thank you very much for giving us the opportunity to serve you and take care of your air conditioning unit. It is very much appreciated the business and thank you for the 5 STAR review. We always strive to earn the trust of our customers and always give our best options for, in favor of the customer. As we always say, YOUR SAFETY AND COMFORT IS OUR #1 PRIORITY AND WE NOT COMFORTABLE UNTIL YOU ARE BECAUSE WE CARE. Thanks. a million."
Robert L.
Apr 2024
Gus and his crew showed up right on time, worked the entire day, did a really great job. A lot of our equipment was old and rusted and all they got cleared out with the systems now newly installed doing great.
Response from Cosmos Heating & Cooling Co
"Mr. [Member Name Removed]. Thank you very much for this wonderful review and the five-star rating. We did enjoy working with you and are very proud of the outcome. We managed to get more air where none before was, and we thank you for the work you provided to us. God bless."
Jesse L.
Nov 2021
I paid $200 to Cosmos for Gus and Carlos to inspect my system, tell me I had two failing valves, and recommend a full HVAC unit replacement (estimated at $6400-7400). Fortunately, I hired another company to give a 2nd opinion after and their tech found a minor refrigerant leak causing the the issue, repaired the leak, added more refrigerant, and solved the problem for just $500. That tech also confirmed that the valves Cosmos said were faulty were, in fact, just fine - and he showed me that they were working. Cosmos pulled a total scam job and I felt like an idiot for paying $200 for that service call. Of course, when I called to tell them what happened after they left and request that they stop payment, they immediately cashed the check and avoided my calls. Avoid this company despite the positive reviews!
Response from Cosmos Heating & Cooling Co
"[Member Name Removed]. we came to Haymarket Virginia on 11/08/2021 . we were there for inspection of 2 systems. One in the basement and one in the attic. The basement unit is a Gas furnace with a air conditioning unit outside. We inspected ,we cleaned it, we performed a 16 point check and have it ready for winter. The second unit in the attic is a heat pump. You said to us that you have no idea what you have and we educated you of what you have there and we even wrote on the disconnects which unit is for which floor. Heat pump for the second floor unit, was short cycling. We checked the refrigerant and WAS fine. Unit was fine on an air-conditioning mode. And you had no problem getting A/C. Switched to heating mode and your unit was making a noise and shutting down . ONCE YOU LOOSE THE FREON it can not work either heat or cool. We try this several times, and cooling was ok, but on heating mode the unit was short cycling. Reversing valves get stocked some times, in rare occasions reversing valves can work again . Time will show. We don't have miss calls from you, we don't have a voice message from you, we don't have an email from you. The check was cashed 3 days later. We only charged you for our time for 2 inspections, for basement unit and attic unit. Sorry you feel this way. Good luck to you with this Heat Pump."
Kristin G.
May 2021
In mid-2020, I hired the Cosmos team to replace a 20ish year old HVAC system. They recommended we replace our old electric only unit with a AC/heat pump combination, citing that it would save us money. Due to the pandemic, they were only able to source Trane manufactured units, not Carrier like they had in the past. We decided to move forward and once the system was installed, it would make a really loud grinding noise once in a while. For several months I tried to keep track of when the unit would make the noise -- often at 2 or 3AM. Plus, the system was running way more than it should have been. It was driving us crazy. Something was definitely not right. Without question, George and his team tried to help make it right. They consulted with their Trane rep frequently, followed his advice, and came out to our place multiple times to try troubleshooting it. After several months, they were finally able to persuade the Trane rep to replace the outdoor portion of the system. I felt bad that the Cosmos team had to spend so much of their own time finding a solution. My only critique would be not of Cosmos but of Trane. It seemed like we just got a busted unit to begin with. The system runs really well now and we're seeing lower electric bills. I'm grateful for Cosmos' professionalism and dedication to making things right.
Response from Cosmos Heating & Cooling Co
"Dear Mrs. G***** Thank you for been understanding with the situation of the new air conditioning unit, We did followed with the manufacturer and after several weeks of negotiations they agreed to give you a new unit on the outdoor . We are happy that you gave us the good review and the nice words and will always appreciate good customers like you. . Thanks a lot and don't forget to try our # 1 book at Amazon. Its called INSIDER SECRETS OF THE HVAC ESPERTS. thanks a million ."
Lilly S.
Jan 2021
My heater broke down early January and I had Cosmos come out to see what was wrong. HVAC unit needed replacing. They walked me through my options and gave me a fair price estimate and answered all of my questions. They were straightforward and easy to work. I highly recommend them.
Response from Cosmos Heating & Cooling Co
"dear Mrs. S*** .Thanks for the wonderful rating and we thank you for the work that provided to us. We love customers like you and we value the good good words. We thank you and are so happy we were able to help you. Thanks."
Chris Y.
Dec 2020
They were great. Responsive. Competitive on price. Honest.
Response from Cosmos Heating & Cooling Co
"Mr. Y****** Thank you so much for the opportunity to help you for your new system. we are grateful for work you provided to us and the good rating and inspiring words. Thanks a lot .Hopefully you and your tenants enjoy the new system for many years to come. God bless."
Tom M.
Sep 2020
Two technicians came and fixed the problem right away. Very friendly and professional. Pricing was fair. Communication was good. I think this company is excellent.
Response from Cosmos Heating & Cooling Co
"Mr. M****** thank you for the good rating and the good words, we at Cosmos are happy to serve customers like you. We are so grateful to serve you and being able to help. Thanks a lot .Thanks for the good rating."
Kathleen M.
Aug 2020
Wow, these guys are awesome! They responded quickly to our request for a proposal, came out with masks during covid, evaluated the situation without complaint (the a/c is in a really tight attic space and it was VERY hot) and gave us a reasonable proposal. They got the work done very shortly after we accepted the proposal. When they arrived to do the work, they were meticulous about putting down protective sheets on the floors and keeping their masks on the whole time, despite the heat. They got the job done the same day and were at all times professional. My husband and I felt very confident using this company. I highly recommend Cosmos!
Response from Cosmos Heating & Cooling Co
"Mr. and Mrs. M***** Thank you for the wonderful review and the nice comments such as ,REASONABLE,METICULOUS,PROFESIONAL , ETC. We want to thank you for the excellent Rating and customers like you we love to take care. Don't forget to check our #1 selling book at Amazon .com. We are happy only when our customers are happy. Thanks. a million."
Tim S.
Aug 2020
excellent, cleaned AC and blower, got us back in cool temps a day earlier than promised.
Response from Cosmos Heating & Cooling Co
"Mr. S****** thank you for the good review and the wonderful rating. We would love to serve you again and again and we always try our best keep our services Prompt, Fast and Professional .thanks a lot God bless you ."
JUNE G.
Jul 2020
George came out and did a quick fix that slowed the flow of water, but determined that it either needed repair or replacement. Since the unit was 17 years old, I opted to have it replaced. Gus came out the next day with a new air handler and removed the old unit and replaced it with the new one. They did it far more quickly than I anticipated, and now everything works perfectly.
Response from Cosmos Heating & Cooling Co
"MRS. G************* Thank you so very much for this wonderful review and the excellent rating. it is always with a great pleasure to work with customers like yourself who understands the values of COSMOS HEATING AND COOLING . We thank you for the business but we are more appreciative for the good review. MONEY COME AND GO, BUT A GOOD NAME STAYS FOR LONG. Thanks a 1000000 ."
Tim S.
Jul 2020
Excellent. Gus and team showed up a day earlier than expected and quickly cleaned our unit getting us back to s cool environment on a 100 degree day
Response from Cosmos Heating & Cooling Co
"Mr. T** S**********,thanks for the good rating and the nice words, we always try to get as many customers as we can, because we feel bad when our customers are not comfortable, that's why we sometimes put 14 or more hours a day. Our motto is " your safety and comfort is in our hands and we are not comfortable until you are," and we mean it .Thanks a lot ."
Victoria S.
Jul 2020
A/c was not working. They identified the problem and fixed it
Response from Cosmos Heating & Cooling Co
"Mrs. V***** S*****, thanks for the good review .It is a warm feeling to know that we have nice customers like you. We came, we identified , we fixed and out of there in a few . Job done. thanks. again . God bless you."
Wendy J.
Jul 2020
Cosmos Heating & Cooling was fantastic. My air conditioner was not working. They came out the next day and advised me that my 30 year old system needed replacement. They managed to clean off the ice so the system kept going over night and I was comfortable in 90 degree heat. They were able to find a replacement (Furnace and A/C) despite being in very short supply due to pandemic. They were able to install the very next day. The price was extremely fair and they even gave me a new thermostat free of charge. They were professional, responsive, fair and honest, and incredible to work with. I highly recommend them! Thank you for taking care of this in this heat wave!!
Response from Cosmos Heating & Cooling Co
"Mrs. W***** J****** , thank you for the good rating and the inspiring words that you used , Such as FAIR,PROFESIONAL,RESPONSIVE,HONEST,AND TAKING CARE OF YOU. THATS Exactly what we do every day. and we all thank you for all that . Please don't forget to check our #1 selling book at AMAZON.COM called "INSIDER SECRETS OF THE HVAC EXPERTS. " THANKS A MILLIOLN"
Leigh M.
Jun 2020
Very polite, informative and efficient. Called Friday Came Monday Returned Thursday to put part in,
Response from Cosmos Heating & Cooling Co
"Thanks for the wonderful review we do appreciate good customers like you, Don't forget to check our # 1 selling book on called .....'"INSIDER SECRETS OF THE HVAC EXPERTS "' THANKS, A LOT"
Jon B.
Apr 2020
Great - in and out in under an hour.
Response from Cosmos Heating & Cooling Co
"Mr. [Member Name Removed] B***** thank you for the fast and excellent review and the nice rating. We, here at Cosmos ,we love customers like you that understand and enjoy our values , We always try our best to take care our customers to the best of our abilities, and its nothing more satisfied than a happy ones like you .Thanks a lot and be assure that we will continue for many more years to work hard to take care people like you. thanks a lot"
Ali M.
Mar 2020
Way way beyond expectations. Our water heater stopped working. The wires had overheated, melted the cover, and corroded the panel, the wires themselves, and dessimated the surrounding styrofoam. I called at 10 PM he called back within minutes it was at our house before 9 AM the next day. He fixed it on the spot and charged hundreds less than I expected. he gave me tips on what might reduce the risk of this happening again in the future. When I asked him about replacing the water heater he said it probably does not have to be done now and gave me a realistic expectations about what it would cost and when it would be wisest to reconsider this. he was honest and extremely helpful and I never felt like he was trying to push me into making any decisions other than the right ones. I cannot express how thankful I am.
Response from Cosmos Heating & Cooling Co
"Mrs. A*** M***** thanks a lot for the inspiring and warm hart felt words that you used in this review . I love customers like you and the nice words that you use here .WE TREAT ALL CUSTOMERS WITH RESPECT AND ALWAYS PUT THE CUSTOMER IN OUR SHOES, WE WORK WITH YOU AS IF YOU WERE MY FAMILY, and thank you for your kind words . God bless."
MARK G.
Feb 2020
They are excellent, very helpful and responsive.
Response from Cosmos Heating & Cooling Co
"Mr. G***** thanks a lot for the excellent review .It is with great satisfaction and warm feeling to know that a customer is happy and satisfied, we work so hard for this kind of a review and we will always try to give the best service possible. Thanks a lot and don't forget to check our # 1 selling book at amazon .com Its called """""INSIDER SECRETS OF THE HVAC EXPERTS""""" THANKS A MILLION"
Annie N.
Feb 2020
The world of home repair is populated by ruthless rapscallions who would take financial advantage of a family who came home on a frigid Friday night to a 60 degree house and four very cold sphynx cats who were racing from vent to vent in hopes of warmth. (Furnaces and children will always get sick on a Friday night). Cosmos Heating is an honest operator - a truly rare find in the industry. I was going to tough it out until Monday because I've never found a repair service who had office hours on weekends. AND If you are lucky enough to find a repairman, you can count on price gouging for the services. Our old Heat/AC guy retired years ago and I was stuck with no referrals, so I went to Angie's List to get a lead. I chose Cosmos for a few reasons. 1. The owner answered his own phone. 2. He had weekend hours and was here within a couple of hours from when I called. 3. He didn't charge a ridiculous price for coming out on Saturday. 4. A credible review from Dec 9 mentioned Diogenes from Greek myth and, well, that clinched it. (I love mythology) Turned out it was a very minor fix, no parts needed. The furnace unit is fine, the hairless cats are thawed out, and we went from freezing to toasty in a few hours. He was honest in his diagnosis and repair and has earned my respect and my business.
Response from Cosmos Heating & Cooling Co
"Mrs. A*** N****** . thanks for the inspiring and beautiful review ,you posted here and we love to help people like you,. We love the customers that send positive energy through the phone , and when you open the door ,I felt you good vibes. That's what the overworking and tired service people need to continue for so many hour a day, trying to help customers without heat or A/C. WE thank you for the opportunity to serve you and thank you for the good rating,. WE ARE COMFORTABLE ONLY WHEN YOU ARE COMFORTABLE.. Thanks."
Diana W.
Dec 2019
They are excellent and go above and beyond. They have been very reliable, professional and are very knowledgeable. We would highly recommend them and we will definitely hire them again.
Response from Cosmos Heating & Cooling Co
"Mrs D*** W*******. thank you for your kind words like EXCELLENT-RELIABLE-PROFESSIONAL AND KNOWLEDGEABLE.I am also happy that we took care of your heating unit and now you are warm and comfortable. and thats what matters to us the most. Don't forget to check our number one selling book at amazon .com . its calle ""INSIDER SECRETS OF THE HVAC EXPERTS""" Thank you and god bless."
Mike S.
Dec 2019
Better than I could possibly have hoped. Diogenes is said to have roamed the earth with a lantern searching in vain for an honest man. He should have just called Cosmos. Our furnace failed and another contractor came out and told us it would either be $1600 to get a part or two and then there could be more because he couldn’t diagnose in full without fixing that part. Or, $4500 for a replacement furnace. Cosmos came out to give me a second quote, took a look at the part, realized it was merely jammed and fixed it on the spot for far less. They have definitely earned my trust and will be getting my repeat business. Wish there were something above "A" that I could give as a rating!
Response from Cosmos Heating & Cooling Co
"Dear M****** SH***** . i am so thrill i can not contain my emotions ,when i read this review . I have been in business for more than 35 years and i can honestly tell you that this is the most flattering one i received so far. I thank you from the bottom of my hart for this and i hope i can have you as my customer for a long time.The story goes like this : When they asked ALEXANDER THE GREAT , what he wanted to be if he was not that powerful , the king replied.I WANT TO BE DIOGENES , AND THEY SAID TO HIM. NO, GIVE US SOMETHING ELSE and the king said again.I WANT TO BE DIOGENES. If someone ask me what i want to be ,i will say ,I JUST WANT BE ME. I am comfortable with my self and i will not change ,because at the end of the day all it matters to me is to have a happy and satisfied customers. THANKS A MILLION."
Laura D.
Oct 2019
Mr. Cosmos and his son checked my two year old heating system and a mini-split. They also checked my water heater that I thought might need to be drained. They worked quickly and answered my questions. They showed me the discolored water that came out of the water heater. Then they drained some more water which came out clear. Luckily the water heater did not need draining yet. During the time they were working I remembered that I have a BBQ that I could not get connected to the attachment on the gas meter. He quickly got the line from the BBQ connected. Then he gave me some advice about the BBQ. Mr. Cosmos was very patient in answering my questions. He and his son worked quickly and did not try to rip me off. After I get my siding replaced I will hire them again to run a copper line for my BBQ.
Response from Cosmos Heating & Cooling Co
"Mrs. M***** D********we are so happy to hear that you like the work we did and we thank you so very much for the nice words and the wonderfull rating . We, at cosmos team are always eager to help you and all our good customers to the best of our abilitity . At the end of the day all it matters to us is a satisfied customer , and as i said many times before with us you feel like a family and we treat you like a family . We THANK YOU for serving our country , and keep us safe. God bless."
Robin W.
Aug 2019
I had a busy week at work and could not take more time off. I needed someone that day. Cosmos had had a cancellation and fit me in that morning. They found the problem quickly and were able to replace a part. They were thorough and checked all the various components. They were great and I will contact them next spring when I need preventive maintenance.
Response from Cosmos Heating & Cooling Co
"Mrs. R**** W***** .we appreciate the good review and the excellent rating . We work hard for this and we always try our best to keep our good customers safe and comfortable year round . As we always say, Your safety and comfort is our #1 priority and we are not comfortable until You Are, because we care . thanks a lot good bless."
Marc M.
Aug 2019
Cosmos arrived next day I called to inspect my broken A/C. They arrived in morning and tried multiple potential solutions until determining 20-year old condenser and coils in indoor fan needed to be replaced. The cost was extremely fair and they completed the job on schedule and quickly. They were really great. This is second time I used them and would recommend them to anyone.
Response from Cosmos Heating & Cooling Co
"Mr. M*** M******* Thank you for your wonderful and inspiring words , and Thank you for the excellent ratings , We love to help customers like you and we will always try to do our best to keep our good customers Safe, Comfortable, and with most respect Thank you and stay safe. DON'T FORGET TO CHECK OUR #1 SELLING BOOK ."
Kashif M.
Jul 2019
excellent timely service. great professionalism
Response from Cosmos Heating & Cooling Co
"Mr. K***** M**** it is my pleasure to serve you in a timely mater and I am happy that we solved you issue with the downstairs system,. The greatest satisfaction for us is when a Customer is a happy customer .,Don't forget to check our BEST SELLING BOOK ON AMAZON . its called ******* INSIDER SECRETS OF THE HVAC EXPERTS ****** I am sure you will be saving lots of money on your next repair, since we give you lots of tips how to solve some of the common issues with the systems. THANKS A LOT , and we thank you for the excellent review and rating ."
Licensing
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FAQ
Cosmos Heating & Cooling Co is currently rated 4.8 overall out of 5.
Cosmos Heating & Cooling Co accepts the following forms of payment: CreditCard
Yes, Cosmos Heating & Cooling Co offers free project estimates.
No, Cosmos Heating & Cooling Co does not offer eco-friendly accreditations.
No, Cosmos Heating & Cooling Co does not offer a senior discount.
Yes, Cosmos Heating & Cooling Co offers emergency services.
No, Cosmos Heating & Cooling Co does not offer warranties.