Would recommend this company to everyone! Professional team and took care of replacing our Nest system within the hour. Made the tenants and us happy. This company is our only go to from here on out. Thank you so much. Washington Partners Alexandria, VA read more

all three of rooms stayed cold and no heat for years after this company installed ac/heater. turns out the return was not even connected and blowing air in my attic. i am having it repaired and it turns out the blower fan is rusted out also. my recommendation to any customers is use a different company than this read more

i had this company install new ac/heater in 2022. i just found out they didnt connect the actually intake and was blowing freaking air in my attic for the last 4 years! it caused the fan to rust out also and now I am paying 1600 for repairs. thanks a lot for nothing!!! read more

Our A/C stopped working during a summer heat wave. I called Slavko at 8pm and he was able to come out the next day to fix the issue. He gives an honest assessment of the issue and charges a fair price. I would not hesitate to use his company again! read more

This team is great and they go above and beyond when you hire them to complete a job! I will use them again! They communicate properly and are honest with their work and don't cut corners. Great tradesman and I will be a returning customer without a doubt! Sammy is the man! read more

In the last few years NS replaced my unit at home and also in a rental property I had owned. What a great experience working with Sammy and NS! Their pricing was well below others I looked at too! The installers were professional and friendly. And just last night my AC went out. Sammy responded even though it was a Sunday evening and his wonderful tech, Pedro, just left here at 9 pm in a Monday night!!! All is cool again! Yay! Thankfully the issue was minor and caused by my oversight - not cleaning out a little pipe with the little brush that comes attached to the unit. The dirt caused a sensor to trip and turn off the fan to protect it. So guess it was a blessing that it turned it off rather than burn it up? Anyway, I am super grateful to these Sammy NS and highly recommend them! read more

Second time I've used NSI. First time at my moms house. The second at my in laws 5 years later. NSI was fast, reliable and the best deal in the DMV area. Sammy was professional and a true gem to work with and stands percent by his installations. I highly recommend!!! read more

May 28, 2020: The new Bryant Heat Pump installed (Feb 2019) is not working. No AC. The outdoor condenser is not running. June 13, 2020: I emailed the company because the unit was blowing fuses and the problem I reported for warranty repair was still not addressed. Sammy said an electrician named "Carlos" would be here this morning at 8 am. This is very disappointing. It has been 16 days, and the AC is not working. The unit is still under warranty labor and parts. Carlo the electrician showed up and inspected the unit. He reported no electrical issues. Sammy then put in a temporary fix. He promised he would come back and put a more permanent fix. Nov 19, 2020 update: The temporary fix is still there. Sammy has not been back. The reasons range from it is my problem to will get back to me, and latest is can they wait until pandemic is over. By then, the warranty period will expire! Very disappointed. read more

I contacted NS about what turned out to be a normal defrost process. Sammy was very honest and Iet me know that it was normal. He also told me what to look out for and when the system would need looked at. Thank you Sammy. read more

Super professional. Very Clean. The work was done at an appropriate amount of time. The owner came to do a quote for me in a very short notice so I can get back to work. He was honest about what would have to be done and gave me options. We had a little baby in the house and they made sure to give me a fast appointment to replace both units. Thank you so much we will definitely pass the name around! read more

After sorting through all the communications issues, I was finally able get help with my HVAC System. The office was able to get a technician out to my home to help troubleshoot and make repairs to the system. This has been a great help and the Company has definitely made up for the shortcomings of missed appointments and no shows. I appreciate the staff doing their best to solve my HVAC issues and provide the support that I needed. read more

Just got my ac unit fixed by NS. There workers came found the problem and boom! Have cool air again. They stayed and made sure everything was working before they left as well. Also before entering the house they put on shoe covers. They didn't need to but that was a plus for me. Thx NS! read more

Back in 2017 I did quite a bit of research in the Loudoun County area to find a good company to replace my defective HVAC system. I came across NS HVAC in Yelp and asked them to come for an estimate. Their estimate was VERY competitive, so I went ahead and hired them for the job. They did an excellent job installing a new HVAC system. This month in October 2020 I had to replace the HVAC in another property, and I decided to give them a call once more. Sammy came and again gave me very competitive pricing. I hired them and the team did an excellent job once again with the replacement. Communication throughout the process was great, and the technicians answered all my questions. I seldomly leave reviews, but this was well deserve and I highly recommend them. read more

Great communication, attention to detail, tact, and follow-through. Would definitely refer them to others.

Great experience! They gave me a great quote when I compared it to 2 other companies. Even after one quote was cheaper, however offering crapper equipment, NS Heating and Cooling lowered their price a bit and offered an additional warranty. They were always on time, helpful and followed-up. I'd highly recommend them! read more

Great job for a very reasonable price. I've already recommended this company to family members who need a new furnace. On time, polite, and efficient service. I'm going to use this company for all my HVAC maintenance needs. Thank you!! read more

TALK TO NS HEATING FIRST! Have used NS Heating on several occasions now. Not only have they bailed us out of several HVAC breakdown situations, they have also replaced 3 HVAC systems for us in downtown DC - we've had a 5 star experience each time. One system replacement involved moving the compressor unit to the backyard from the roof, and while they did not remove the old unit, they placed the new compressor in the backyard and did all the wiring required with the minimum disruption to the indoor dry walls etc. They also added an extra intake on the second floor, found the ideal location for it and completed the job in good time. The other two systems required replacement of the chimney liners, again managed with expertise. They gave very competitive prices, the best labor and service warranty anywhere on Carrier Performance 2 - 4 ton systems. Sammy is extremely personable and will personally ensure that the job is done right each time . read more

The warranty company contracted them out for repair work on my A/C. I tried contacting them, couldn't get past the initial respondent who yelled at me and shut me down for calling them. Not sure if that's how they treat all the paying customers. read more

I used NS to replace a central air unit that stopped working a year ago. My husband and I saved up a year to replace the unit. I spoke with Sammy, and negotiated a price. An hour later, I was hit by a bus. Car totaled. All the $ we had saved needed to go to doctors, rental cars, etc. The first person to call me the day after the accident to see how I was doing was NS HVAC. They called even before my insurance company. They said whenever I was ready to move ahead, the negotiated price would stand. We were able to *finally* have the unit installed this past Saturday....just hours ahead of the heat wave. Saturday morning at exactly 9am, Byron, and an assistant arrived to save the day. They were fast, efficient, and friendly. by 3:30pm, we were literally chillin'. read more

Our air handler unit stopped working, and the heat pump had already had several repairs. We decided it was time to replace both. Did some research and put some requests out for estimates. Omar responded very quickly and provided specific info/pricing via text/email. He came out a couple of days later for a home visit. We were given several estimates/options to go with, and never felt pressured to choose one option over the other - it was our decision to make (and Omar answered some questions we had prior to making a decision, so we could make an informed one). The three gentlemen that came out to do the installation were professional, courteous and diligent. They did a great job and left everything clean when done. NS was a great business to work with from beginning to end. I wouldn't hesitate to recommend NS to anyone looking for HVAC work! (Of the three businesses we looked at, one was slow to respond and the other quoted us a much higher price for the job...NS was always prompt in their responses and pricing was reasonable). read more

I bought two Daikin ductless systems to replace existing Fujitsu ductless systems for my house. I had NS Heating and Cooling install them. The guys did good work and were pretty clean in getting it done. I'd hire them again and I will most likely use them in the future for any heating or cooling issues I have. The job was done in a single day and everything has been fine since. read more