Logo of 1-800-HANSONS

1-800-HANSONS - Sioux Falls, SD

  • 2707 S Carolyn Ave, Sioux Falls, SD 57106
  • Financing Available
  • Metal Roof
  • Slate Roof
  • Green Roof
  • Asphalt Shingle Roof
Hours
Mon7:30 AM - 9:00 PM
Tue7:30 AM - 9:00 PM
Wed7:30 AM - 9:00 PM
Thu7:30 AM - 9:00 PM
Fri7:30 AM - 9:00 PM
Sat7:30 AM - 9:00 PM
Sun7:30 AM - 9:00 PM

About the Business

No description yet.

What people say about “1-800-HANSONS”?

There are not enough reviews yet to form a clear opinion about 1-800-HANSONS

Recommended Reviews

Overall Company Rating
Excellent 4.6
Out of 61 reviews
5 stars
4 stars
3 stars
2 stars
1 stars
Show first:
ryan clites
Jul 29, 2025

DO NOT TRUST this COMPANY with ANYTHING they have to SAY. This by far is the WORST company I have ever worked with. I had a rep come out in May of 22. He had explained and showed me the different options we could. I explained to him that if we sign this contract today, I was wanting to get the windows in before winter. This was Due to because my house was built in the 60's and still had single pane windows in and how awfully cold it was from the previous. He assured me that it was a reasonable thing that could happen. Long story short was we had to reschedule 3 times in order to finally get someone up here to install them. In which I was originally told it would take 2-3 days.... it took 5 and they were installed January of 2023, one of the coldest times here. In which then ran my heat all day everyday they were here. I even went through the trouble of moving several feet of snow around all the windows so they could get easier access to them. Fast forward to January-February of 2025 I then had condensation on the inside of the windows where the 2 separate windows would meet. I then put in a service request for them to come look at that all 9 of 11 window screen because they sat crooked. I then painted bedrooms, getting ready to have a kid. and the one wall where the window was their was 2 spots about the size of baseballs that would not dry and they could run, well come to find out, around the trim it was freezing cold, and the trim on the inside of the window was pulling away from where they nailed and I had a cold draft coming through. After having their rep coming out 2 times because the warranty would only cover for them to open the window and seal it again if the breeze coming through would only blow out a match or lighter. In which INFURIATED me because my windows cost me almost $29,000 and you can't pull the window apart to seal it. We finally had a windy enough day that the lighter did blow out. The rep finally got approval to replace all the bad screens. Come June 9th now set up a time to have them come up and do everything. I got a call from them saying they couldn't make it because of a double schedule... or maybe they didn't have enough time to drive up and do it. I live about an hour from their company building. Got rescheduled for June 12th. Got another phone call on June 11th stating the installer they had originally had will not be able to come up anymore. They will send someone else they have up to service my area and once they get in touch with them about their schedule they call me back to reschedule. Finally got a call July 1st to schedule for July 8th. Got a call on July 7th to reschedule because the installer had a family emergency. I asked them if there was anyway they could take someone else off a different job and send them up here because we have simply rescheduled 3 times already and they told me that was not an option. So we rescheduled for July 21st. Come July 21st, I got a text message saying they will arrive between 8am and 12 pm, I then received a call at 10:55 am saying that the installer will not be able to make it due to vehicle maintenance. The scheduler then said let me take a look at the schedule and looked at where I lived and stated that due to how far i live they can get to me the following week Tuesday at the same time 8 am to noon. Well here we are, the following Tuesday July 29. It is approximately 1:05pm I received a text message from them this morning stating the installer would be arriving between 9-11 am. I called at 12pm and was on hold for 18 minutes and still had not talked to anyone nor have I heard from the installer. I AM COMPLETELY DISGUSTED WITH THIS COMPANY AND WOULD NEVER SUGGEST THEM TO ANYONE. I also think its crazy that I spent almost 30K and my windows that have lifetime insurance through 1800 Hanson's and they can't do any simple job of installing screens or sealing up my windows they put in also the fact of how much time I have just sat around waiting for them to show up or setting time up for someone when I couldn't be there to come.

Michael Lustfield
Jul 29, 2025

Run away!!! This is just a contract firm that offloads projects to the lowest bidder. It tooks many months of a leaking window before they came back, and now another storm is showing me that the problem has not been resolved. Now I'm able to smell rotting wood near that window and suspect my house may be in very bad shape thanks to putting my trust into 1800hansons.

If you want your house ruined with customer service that leave you on hold for 8+ hours per day, this is the place to lose any remaining sanity.

Lorna Stamp
Jul 15, 2025

Alex was wonderful. He explained everything so well and answered all the questions we had. He walked us through the entire process of getting our replacement windows, start to finish. We feel very ready to get this done!!

Chris S.
Jul 10, 2025

Alexander was very friendly, knowledgeable, and professional, regarding home window replacement. I enjoyed visiting with him and look forward to doing business with him.

janet Wiener
Jul 9, 2025

I was very happy with the representative that helped me decide what I wanted to do with my windows. No pressure to buy and very easy to talk to. I was very impressed I would recommend this company to anyone looking to replace any window

Kourtney Rozeboom
Jul 8, 2025

If we could give this company zero stars we would. Their window product is good. Their people and performances are just terrible and ridiculous. We have been rescheduled and rescheduled from when they had to install the windows and now again from when they are to come back and redo a window and replace screens because the installer didn’t put the windows in correctly. We have air leaks and we have crooked screens. We have been rescheduled at least 4 times now to have these repairs done because they keep double booking us. It’s very hard to even get ahold of someone there to even ask about when they are coming or if they are not coming. We have taken days off work to wait for them to be here and then they never show and call to reschedule. What a terrible unprofessional company. Take your business elsewhere and save yourself the hassle of this back and forth nightmare the past few years with this company has been. Yes years. My MIL got windows done with them too now in a different city than us and has had the same issues with this company leaks with water and all. Better off with a different company with just as good windows so you don’t have these problems.

Theodore Parsons
Jun 18, 2025

So far so good, they were best by far in sales and product. Best quote, no hard sell as opposed to competitors who were humorous in hard sell (de Bella). Final measurement went very smoothly day and a half after signed contract, window are in production currently, 6-9 weeks out. Very happy so far. They keep me updated. There is also 12 months free financing. Good experience. Recommend them.

Kim
Jun 10, 2025

I haven't had my roof installed yet, BUT, the representative (Sharon I think was her name) who called me to set up the appointment was friendly, courteous, and calming. As this was my first time talking about a new roof.

Then our Sales Rep, Christian, was so patient, nice, answered all my questions ( I had about 40 of them BEFORE he started his sales pitch), and was the best Sales Rep I have dealt with in a long time. Thank You, Christian!

100% recommend 1-800-HANSONS

Zach Borstad
Jun 5, 2025

Christian came out for my free estimate for the rotting wood around my bay/bow windows and he did an incredible job showcasing Hansen’s work and providing outstanding customer service, offering comfort, answering any questions and was super polite. Hansen’s offers a wide variety of financing options. Cannot wait for this project to be completed.

Kari Harrigfeld
May 30, 2025

Excellent at discussing options for financing. I felt comfortable sitting down at my kitchen table and visiting with him and making such a decision for my home improvement project.

Stacey Canana
May 28, 2025

Christian did a fantastic job of explaining all the different aspects of a window project. I really liked the deluxe and premium window they had. Hanson's had the best pricing of the other options we looked at. Im excited to finally get an quality upgrade that has a lifetime guarantee.

Mike Dinsmore
May 24, 2025

Great Experience with Christian from Hanson.
Was Punctual, Patient and never Pushy.
Very Thorough explaining Product, in this case gutters and Hansons background.
I would highly recommend Christian and the folks at Hanson for your next project.
-Mike

Nathan Christianson
May 22, 2025

Christian was knowledgeable and friendly. Gave me all the info I wanted and was able to knock the price down to where we could afford it

Barbara McClintock
May 21, 2025

The process of ordering replacement bedroom windows from 1-800-HANSONS was an overall good experience. I was given great customer service from Christian, who was very knowledgeable, friendly and professional. He answered all my questions about their products and financing. After some adjustments to my quote we came to an agreement that made me comfortable and confident in my decision. We look forward to getting our quality windows installed in the near future.

Roxie Jacobson
May 14, 2025

I had a great experience with Christian. He really took his time and showed us all of the options. We really liked the deluxe package and it was the best price we had received. Excited to get these 30 year old windows replaced. Highly recommend Hansons!!

David Squires
May 9, 2025

The Hansons representative was very informative and helpful with our window project. The installers did a great job and cleaned up the area when completed. The windows fit perfectly. We are very happy with the new look to our Sun room.

Maeleachlainn Searbbreathach
May 1, 2025

Alex was a great & understanding guy who knew his job thoroughly in & out. Was fast to answer questions & explain the differences between products. Very friendly with a sense of humor.

Digger Degenstein
Apr 30, 2025

Alex Mader was one of the most helpful salesman and very polite. I will use your services in the future.

Sara Johnson
Apr 29, 2025

Today I had a very sweet gentleman Alex Mader in Sioux Falls, SD. Come to my house to go over options and prices for installing a shower then changed my mind to a bathtub then bath and shower.... then doing both bathrooms we went over LOTS of options (slightly indecisive and perfectionist). Our meeting took lots of time he was extremely patient and kind no pressure sales person. I was going to shop around for the best price but purely off of his personality I trust him and choose to do business with only Hanson's I can only hope that everyone else there is as personable and knowledgeable as he was.

ahren hoskins
Apr 26, 2025

I would rate Alex from Hansons higher if I could. I have had a few people give me a quote on windows. I had by far the best experience on how and what his company offered for the project. I also know the product will be exactly what I wanted. I would give a 10/10

Bradly Shanahan
Apr 24, 2025

Initial sales experience was great! Christian provided excellent knowledge, was friendly and helpful through the process, and was more than willing to help us with any questions!

Maggie Senne
Apr 23, 2025

Christian was so knowledgeable about the company’s offerings but presented in such a laid back manner where I felt zero pressure to “sign on the dotted line.”… but I did anyway. He made sure to give 110% of his time and attention to me and made sure I wasn’t confused or unsure of anything.

Julianne Powers
Apr 18, 2025

Christian was excellent at explaining all the options on our window replacement project. He was patient with all our questions and we never felt rushed. Christian's attention to detail gives us great confidence the job will be done right. We appreciate that he was able to explain all the next steps, so we don't feel overwhelmed. Now we are actually excited about this project.

That Gurl
Apr 11, 2025

Five new windows put in for 9k and didn’t try to open all the windows until the next day (because you know I foolishly expected people who spend their time professionally putting in windows would know how to do that properly )and align the locks and not destroy the windows in the process of trying to use them. Furthermore, I was just on the phone with customer service and explained the situation and did not even get an apology of any sort.
I am super unimpressed and disappointed in your service and will not be using it again or recommending to anyone else.

Wiley Hand
Apr 11, 2025

To who it may concern every thing was explain and show in a professional way he did an excellent job and get it professional yes I would give him a five star

Nancy Staab
Apr 5, 2025

I have really enjoyed spending time with Alex this evening! He has my type of humor which made the night very entertaining. Also, he is left handed just like me, so he is also using the right side of his brain, lol. He has the perfect personality for a salesman! He is social, polite, funny, and has a great laugh!

Kelly Miller
Apr 2, 2025

Christian came to our house to talk about gutters and trim. He did a great job atvtalkingbus over everything. He took the time to take extra pictures my husband wanted noted on the job. He even helped us with the financial part. We've had a great experience with 1800 hanson.

Nancy Brant
Mar 28, 2025

Ryan Pingrey was a wonderful person. So polite and friendly. He explained the company and their business. Ryan was very professional. Your premium window product is an excellent choice for us. Looking forward to a beautiful new window. Ryan showed us how energy efficient the new window will be and your warranty is excellent! We are very happy that we chose your company. Ryan explained every detail of the window, how it will guarantee, the loan process was easy. Thank you!! Can’t wait for the new window!

Neal Bowden
Mar 26, 2025

I just made the roof agreement. So far everything looks good. I do not want roof leaks and it appears the new roof will be good. I want hail protection as much as possible. The roof I purchased should do that.

The salesperson gave a good presentation and communicated in a clear manner.

Gene Moser
Mar 14, 2025

I have had two appointments with Hanson’s representative Alex Mader and was very satisfied. He walked through the project and explained various options in a way that I could understand. He was very polite and did not push me in any direction. I was impressed. Looking forward to a new looking home when the project is completed!

Cassidy Smith
Mar 12, 2025

The process of ordering the window and installation was extremely smooth, and the installers were amazing. Kevin and his right hand man worked very efficiently together and got the job done in a matter of a couple hours. Kevin even gave us a few tips of advice on what we can do on the outside of our house to keep it in good condition, he truly went above and beyond. The only frustrating part of the whole process was getting the installation day canceled three times.

Joan Schulze
Mar 12, 2025

The installers were informative and efficient. The were timely and paid attention to the details of the installation of my windows. It took awhile for the windows to get here, 5 1/2 months, so be aware of that if you order them from this company. The windows are great though.

Jessica Caviezel
Mar 9, 2025

We had a great experience. Christian was very friendly, informative, and answered all of our questions. He listened and made sure we got exactly what we were looking for. He gave great advice and suggestions for each window. The demonstration of how their windows block heat from the sun better than a wall of insulation sold me!

mariana mota
Mar 9, 2025

We worked with Christian who was attentive to our needs and willing to spend the time to walk us through options. Recommend working with him for hour project!

Jason Fraser
Mar 4, 2025

Very prompt for appt. Very upfront and informative. Wonderful product description. Easy finance options. They do donate reusable products to local habitat for humanity.

Jenola Dickman
Feb 28, 2025

He was here on time and explained about the company. He did a great job! He also explained about the windows, how they would be installed, all the benefits, and all the different options there were. We couldn't have had a better salesman.

Thomas Musgrove
Feb 28, 2025

Alex had come to our home today to meet with my wife and I. He had a good quality presentation that he shared with us explaining the differences and advantages of their product. He was able to clearly explain the available features and options available. We felt that Alex was up front and honest with us making sure that all of our questions were answered and that we felt comfortable and confident with his answers. We felt that he represented himself and 1-800 Hansons in an honorable way. We decided to do business with them and look forward to the finished results.

Diane Parks
Feb 22, 2025

The installers were more than polite. They installed windows and patio doors very professionally. They were very clean and reputable.

Jana Gray
Feb 18, 2025

Alex was very knowledgeable, friendly, and thorough when going over our shower project. I appreciated his honesty and felt like he was working for our best interest. Excellent customer service.

Mj B
Feb 9, 2025

The nightmare continues. This company is having serious issues. My order FINALLY arrived after one excuse after another re: manufacturing issues. I’m so over the promises, apologies & egregious disrespect for my property. The casing delivered was completely incorrect as was a screen and the installers were pathetic. The Regional Operations Manager was well aware of same as he was involved with the install. He has emphatically promised to give this priority to rectify as well as contact me to discuss “how we may make your experience with Hansons better than it’s been.”

Shelby Holbrook
Feb 2, 2025

Alex was very personable, not pushy, and helpful with designing our dream shower and tub! He made the process feel easy and fun. We really enjoyed welcoming him into our home to start our project. He was an awesome listener and we are thankful to have had him!

Melanie Loy
Feb 2, 2025

February 1, 2025
I connected with a representative from hansons.com after seeing an online ad. This was my first inquiry to check costs to reshingle the roof for my rambler style home. Christian Graber’s professionalism, thorough presentation, confidence in his company, knowledge of the market, products, and process caused me to look no further and make a decision to purchase a new roof from Hansons. All of my questions were answered in a non pressured conversation that has me excited for this upcoming project! I am confident I will see a great return on my investment. Thank you, Christian, for your expertise in guiding me as a new customer with complete trust & satisfaction in the new roof purchased for my home!

Project completed May 22, 2025
The new roof looks amazing and I am so thankful to have the project completed to improve my home. From start to finish, everything was done in one day. I love the look, quality, color, enhancement to the house, etc. Shingles were all lying flat within a day of being in place with no curled edges. I appreciate the expert work done by your team from Hansons. They worked diligently and were extremely thorough with the cleanup.

There was an inspector out from Hansons about a week after project was done to follow up. I said I was very pleased with everything. I mentioned one downspout bent/damaged and that has been replaced. The initial scheduling was a challenge due to inclement weather but Hansons worked with me to pick a date that we agreed on. The cost of my homeowners insurance has been significantly reduced after I updated my policy to include the upgraded Class 4 shingled roof. In one month I have noticed a more consistent temperature in my home with less demand for cooling & heating. My home is much better insulated, protected, quieter, and safer through the stormy weather we have experienced so far this summer. I am very pleased! Thank you!

Michelle McCampbell
Jan 21, 2025

Christian was great to work with. He explained everything very explicit. He said several times. I just want to make sure you know. Doing the heat test was a shock. I never expected windows to let that much heat in, in the summertime. It's nice to know that it won't come in next summer. Thank you Christian. You did a great job. The two guys that came to install the window were great to work with. It took a approximately 4 hours to install the window after taking the bow window out. I thought that was a great timing. We had a great day to do this weather wise. They cleaned up their own mess and made the window sill for me.

tim buskohl
Jan 18, 2025

I worked Christian on my roofing needs and he answered my questions quickly and professional. I went with Hanson's because of the reputation and price

Susan Heiberger
Dec 23, 2024

We recently had our garage siding and gutters installed by Hansons and are very pleased with the results. The new siding looks great. Communication throughout the process was excellent as they notified us when the crews would be at our house and were also very responsive to all questions we had. We will replace the doors and paint the trim in the Spring and the project will be complete. Highly recommend Hansons.

Kara Honius
Dec 20, 2024

Ryan P did an amazing job! He explained the process, options, financing, and finding the best fit for our family for our new windows! He answered all of our questions and was very personable! We appreciate all of his help and explanations! Thanks again!

Bev Vanden Bosch
Dec 19, 2024

Did a great job on installing. 2 screens were damage but they replaced them before leaving. Love my new look!

Mike Ahartz
Nov 18, 2024

We where really happy with the look of the roof. They did a perfect job and got it done in one day. Highly recommend 1-800-Hansons!!

Stanley & Deborah Brozik
Oct 23, 2024

My husband and I began to notice water spots on our ceiling from a roof leak. We researched a few companies and called 1-800 Hansons. Christian came out and looked at our roof and gave us a few different options. We are both deaf so we really appreciated his patience and thoroughness when he explained everything. He was also able to make the project fit within our budget. We are happy to get the project started. Thank you Christian!

Joan Schulze
Oct 18, 2024

Ryal was amazing. He took his time and made sure are need for windows were accurate. He explained the many products available and our many questions. In the end we are going to purchase the windows. No more drafts.

David Fischer
Oct 15, 2024

Our experience so far has been superb. When Christian came to our house to start the process of selecting siding and measuring the windows to get the quote going, I wasn't sure what to expect. He made the process simple and explained everything in great detail and probably most importantly made us feel comfortable about what we were going to invest in. Great communication and customer care/service. Very knowledgeable in the products they offer.

Update 1 - windows installed - great communication throughout the process - weather delayed the first attempt but they were prompt with the unfortunate notification. The install went great and the final product looks wonderful. Christian was in contact about how the install went and came over to take a look himself.

Update 2 - siding installed - once again great communication once the initial contact was made - weather was looming but didn't interrupt the installation - it was quoted as 1.5 to 2 days and even with inclement weather the installation was complete and clean-up done by the end of the 2nd day. Our main contact, Christian, stopped out 2 days after the install was complete to make sure we were happy with the final product and answer any questions we may have. We feel the siding looks wonderful, especially tied together with the new windows. The white trim with the midnight blue siding really has a great contrast/pop to it.

Update 3 on the way - we have a huge silver maple tree in the backyard that clogs our gutters multiple times a year - we are having them install their leaf guard system as soon as they are able to. You can see the dark stains on the gutters from the overflowing water in the latest siding pictures added.

Clayton Evans
Oct 14, 2024

The premium charge for their windows, service, and guarantee does not seem worth it. The initial install seemed okay and went fairly smooth BUT nearly every window leaked due to poor install. This led to water damage on most of window sills. The service is not good. I have to continually call them to try to get this issue fixed. They pomise to provide call backs but they never do. Multiple service calls have been canceled last minute causing me to waste my vacation time. Each time a service member has come out, they only have continually added to the amount of caulk around the windows and sills... I am a couple months in since I contacted them about the leaks and water damage and yet to get the sills replaced.

Don't get sold on the install and after care service.... windows are okay themselves but I'm sure you can find similar quality for much cheaper elsewhere.

Adam Fadl
Oct 9, 2024

I have had a great experience with Christian so far. He did a great job with helping me get my window and roof project underway. It was very affordable and the options he presented were exactly what I was looking for. I’m looking forward to the final results.

Fei Chen
Oct 7, 2024

Alexander was very professional and patience to work on our needs and showing the best option for us! Thank you!

John Johnston
Sep 12, 2024

MIKE DID a great job of replaceing our wi dows and cleaned up after he was done thank you love our new windows

Loreena Perry
Sep 9, 2024

Christian was super helpful with the entire process and walked us through every step of the way! He made sure we knew everything we needed to know and then some. I was sold from the very beginning. Thanks for all the help!

josh mcconniel
Sep 8, 2024

They came and gave us an estimate.
Christian was informative and helpful answered all our questions and was great to work with

Carol Bice
Aug 30, 2024

I love how Christian took time and explained everything to me, helped me through all my questions, and took time to listen to me.

Bonnie Pinnerud
Aug 27, 2024

Very professional, answered all my questions, gave me a quote immediately, reviewed all special discounts and explained the differences of each product I was interested in. Great company for your needs.

KR G
Aug 1, 2024

Original review 7/30/24
We had an estimate meeting with salesman Christian. He was friendly and explained everything well. We ordered new gutters, roof and patio door. So far everything has gone smoothly and they have kept us updated daily on how things are moving along. Will update this review once work is complete.

Update 11/12/24
All work is now complete and we are pleased with the results. Each project took less than a day to complete and arrived on schedule. We did find several nails/screws, brackets, and a drill bit around the property after the installation of the roof and gutters. A pile of nails and some shingles were left from under the dumpster when it was hauled away. There was a strong chemical smell from the sealants used on the patio door for about a week after installation. We consider these issues minor but want to give an honest review. We are overall happy with the quality of work for all 3 projects.

Did reduce one star from original rating due to all the nails in the driveway and back deck and patio. Made us a little worried for our dog and car tires. No issues have arose though.

Trish Hofer Lewis
Jan 10, 2024

Mike with Hasons .Thank you We are absolutely in love with our new window. You made every part of this process easy. You were patient and kind. You made sure you had all of my questions answered. Mike went above and beyond as far as the window and even fixed the sliding door which took few extra minutes.
I absolutely smile when I see our new window and feel such a tempatuture difference inside compair to our old windows.
It looks fantastic from the inside and out!
It is very difficult to see good installers anymore Mike He is definitely an asset to your company you delivered above and beyond, God sends people where they need to be and he definitely sent Mike , Mike Thank you ! God Bless ☆☆☆☆☆

Call us and get a quote right now Show phone number
137 locals recently requested a quote
  • 2707 S Carolyn Ave, Sioux Falls, SD 57106
  • Financing Available
  • Metal Roof
  • Slate Roof
  • Green Roof
  • Asphalt Shingle Roof
Hours
Mon7:30 AM - 9:00 PM
Tue7:30 AM - 9:00 PM
Wed7:30 AM - 9:00 PM
Thu7:30 AM - 9:00 PM
Fri7:30 AM - 9:00 PM
Sat7:30 AM - 9:00 PM
Sun7:30 AM - 9:00 PM

Companies Similar in Profile

Banner of Red Roof Bungalow by Travel Custer
Red Roof Bungalow by Travel Custer Custer, South Dakota
No rating 0.0 (0 reviews)
Banner of Blue Roof Bungalow by Travel Custer
Blue Roof Bungalow by Travel Custer Custer, South Dakota
Excellent 5.0 (1 reviews)
Banner of Keystone Company
Keystone Company Custer, South Dakota
Excellent 5.0 (3 reviews)
Banner of R.P. Lumber
R.P. Lumber Custer, South Dakota
Average 3.0 (2 reviews)
Banner of A&A Roofing & Exteriors Sioux Falls, SD
A&A Roofing & Exteriors Sioux Falls, SD Sioux Falls, South Dakota
Average 3.4 (5 reviews)
Banner of Your Home Improvement Company - Windows & Bath
Your Home Improvement Company - Windows & Bath Sioux Falls, South Dakota
Excellent 4.8 (53 reviews)
Banner of Wollman Construction Inc
Wollman Construction Inc Sioux Falls, South Dakota
Good 4.2 (5 reviews)
Banner of ABC Seamless Sioux Falls
ABC Seamless Sioux Falls Sioux Falls, South Dakota
Excellent 4.7 (71 reviews)
Other Filters 0