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Oasis Plumbing, Heating & Cooling Offers Seasonal Maintenance Plans

Professional Furnace Services for Chicago Homes and Businesses

When temperatures plummet during Chicago winters, your furnace becomes the heart of your home’s comfort system. At Oasis Plumbing, Heating & Cooling, we understand how critical reliable heating is when arctic winds sweep across Lake Michigan and temperatures drop well below freezing. Our comprehensive furnace services ensure your heating system operates efficiently throughout the harsh winter months, keeping your family warm and your energy bills manageable.

Chicago’s extreme temperature variations place unique demands on residential and commercial heating systems. The city experiences an average of 28 days per year with temperatures below 10°F, making furnace reliability non-negotiable. Our technicians encounter everything from century-old boiler systems in historic Wicker Park brownstones to state-of-the-art high-efficiency furnaces in modern Lincoln Park condominiums. This diverse experience, accumulated over more than 20 years serving Chicago and the Northern Suburbs, enables us to diagnose and repair virtually any furnace issue quickly and effectively.

Comprehensive Furnace Repair and Diagnostics

When your furnace fails on a frigid January morning, you need immediate assistance from experienced professionals. Our diagnostic process begins with a thorough system evaluation, examining critical components including the heat exchanger, blower motor, ignition system, and control board. We utilize advanced diagnostic equipment to identify issues that might not be immediately apparent, such as hairline cracks in heat exchangers or intermittent electrical problems that could lead to complete system failure.

Common furnace problems we encounter in Chicago homes include pilot light failures, thermostat malfunctions, inadequate heat distribution, and unusual noises indicating mechanical wear. Older furnaces often suffer from corroded flame sensors, worn bearings in blower motors, or deteriorating heat exchangers that pose carbon monoxide risks. Our technicians carry extensive parts inventories, allowing us to complete most repairs during the initial service visit. This approach minimizes downtime and ensures your home returns to comfortable temperatures as quickly as possible.

Energy-Efficient Furnace Installation and Replacement

Modern high-efficiency furnaces can achieve Annual Fuel Utilization Efficiency (AFUE) ratings of up to 98%, meaning nearly all fuel consumed converts directly to heat for your home. Compared to older models operating at 60-70% efficiency, upgrading your furnace can reduce heating costs by 30-40% annually. We specialize in installing variable-speed furnaces that adjust output based on heating demands, providing consistent temperatures while minimizing energy consumption.

The installation process requires careful consideration of multiple factors unique to each property. We calculate proper furnace sizing using Manual J load calculations, accounting for square footage, insulation levels, window efficiency, and Chicago’s specific climate data. Undersized units struggle to maintain comfortable temperatures during extreme cold, while oversized systems cycle frequently, creating temperature fluctuations and increased wear. Our installation team ensures proper ductwork connections, gas line configurations, and electrical requirements meet all local building codes and manufacturer specifications.

Preventive Maintenance Programs

Since 1997, Oasis Plumbing, Heating & Cooling has witnessed how regular maintenance dramatically extends furnace lifespan and prevents unexpected breakdowns. Our comprehensive maintenance programs include:

  • Complete system inspection examining all mechanical and electrical components
  • Thorough cleaning of burners, heat exchangers, and blower assemblies to maximize efficiency
  • Safety testing including carbon monoxide detection and gas leak checks
  • Filter replacement and airflow optimization to reduce strain on system components
  • Thermostat calibration ensuring accurate temperature control and programming

Regular maintenance typically reduces heating costs by 10-15% through improved efficiency and prevents approximately 95% of furnace failures. Our technicians document all findings and provide detailed recommendations for any components showing signs of wear, allowing you to plan for replacements before emergency situations arise.

Emergency Furnace Services

Chicago winters don’t wait for convenient times to create heating emergencies. Frozen pipes can burst within hours when furnaces fail, causing thousands of dollars in water damage. We maintain emergency response teams throughout Chicago, Bensenville, Addison, and Elmhurst to address urgent heating failures. Our dispatchers prioritize calls based on severity, with homes containing elderly residents, young children, or individuals with medical conditions receiving immediate attention.

Emergency situations often reveal underlying problems that homeowners might not recognize. Frequent cycling, uneven heating between rooms, or gradual efficiency decreases indicate developing issues. We educate customers about warning signs including yellow pilot flames suggesting incomplete combustion, excessive dust accumulation around vents, or unexplained increases in heating bills. Addressing these symptoms early prevents complete system failures during critical weather events.

Commercial Furnace Solutions

Commercial properties face unique heating challenges requiring specialized expertise. Restaurants need makeup air units coordinated with exhaust systems, while warehouses require strategic heat distribution across vast open spaces. Office buildings demand zone control capabilities accommodating varying occupancy patterns and heat loads from electronic equipment. Our commercial division designs custom solutions addressing these specific requirements while maximizing energy efficiency and minimizing operational disruptions.

We coordinate installations and major repairs during off-hours to avoid business interruptions. Our commercial maintenance agreements include priority service, detailed system documentation, and energy usage analysis helping facility managers optimize heating costs. Many Chicago businesses have reduced heating expenses by 25-35% through our efficiency upgrades and smart control system implementations.

Advanced Furnace Technologies and Future Considerations

The heating industry continues evolving with technologies improving comfort and efficiency. Smart thermostats now learn occupancy patterns and adjust temperatures automatically, while zoning systems deliver precise comfort control to individual rooms. Hybrid heating systems combining high-efficiency furnaces with heat pumps optimize energy usage based on outdoor temperatures and utility rates. We stay current with these advancements, offering customers the latest options for their specific needs and budgets.

Environmental considerations increasingly influence furnace selections. New refrigerants and combustion technologies reduce greenhouse gas emissions while maintaining superior performance. Many utility companies offer rebates for high-efficiency installations, which we help customers navigate to maximize savings. As Chicago moves toward stricter energy codes, we ensure all installations exceed current requirements, protecting your investment against future regulatory changes.

Choosing Oasis Plumbing, Heating & Cooling for your furnace services means partnering with professionals who understand Chicago’s unique climate challenges and have the experience to deliver lasting solutions. Our commitment to quality customer service, reliability, and technical expertise has earned the trust of residential and commercial clients throughout the region. Whether you need emergency repairs, routine maintenance, or complete system replacement, our highly-trained technicians provide customized solutions fitting your specific requirements and budget constraints.

Furnace Services in Chicago, IL

Furnace Services in Chicago, IL

Furnace Services ∴ Chicago, IL

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Family Owned and Operated Since 1997

Make Your Home An Oasis

Keep all your heating and air conditioning systems running at peak performance with an Oasis Plumbing, Heating & Cooling Energy Savings Program. You can avoid seasonal emergencies, extend the life of your equipment and save money on equipment costs and energy over the life of your systems.

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Contact Oasis Plumbing, Heating & Cooling Today!
Featured Five-Star
Customer Reviews

The folks with Oasis showed up right on time and replaced my entire furnace and condenser in about 4.5 hours. I had just redone my laundry room where the furnace is and they took great care not to damage anything. Overall very happy with the service and very happy with how respectful the installers were.

Josh D.

Oasis was incredibly responsive and efficient! My call to them on a Friday night during a cold spell was returned within 10 minutes and he scheduled a tech to come to my home at 7 the following morning. At 7 the tech was there, examined my furnace confirming that a new motor was necessary. He searched for the part, sent a quote and returned with the motor by noon the same day to install it. You can’t beat that!!! I will be using Oasis for all my future furnace and A/C needs.

Gayle V.

Oasis is great! My furnace is almost 30 years old and for a reasonable price they were able to do the repairs. First Danny came to evaluate. He showed me what was wrong. They had to order the necessary parts to fix it. Today Hani and Fernando came to do the repair. They were efficient and courteous. I will definitely use Oasis in the future.

Emily H.

Oasis has always been great to work with and their staff are quick and efficient if issues arise. When our air conditioning broke down during the heat of the summer, they provided a quick replacement at a competitive price. Their staff are always extremely kind, respectful, and knowledgeable.

Sam C.

Danny and the folks at Oasis got us a great deal on a new furnace and AC. The install took about 4 hours, and they were also super responsive throughout the process. It was about as good of an experience I’ve had with an HVAC company. I’d highly recommend!

Brian C.

I have been using Oasis since 2019. They are reliable, efficient, and their prices are reasonable. The customer service is amazing. Every tech I’ve had come out is knowledgeable, friendly, and professional. The owner, Mike, is hands on and works with you every step of the way. Highly recommend Oasis.
Services include: furnace and AC replacement; annual maintenance.

Nicole U.

I called Oasis this morning because my furnace was not working. Within 20 minutes their technician, Danny, arrived. Danny was able to assess the situation, provide an immediate fix, and even commit to returning Monday morning to provide additional services needed. Danny was friendly, informative, professional and FAST! I am thankful I called Oasis for my immediate heating needs and that Danny was the technician who arrived. Top notch service! Highly recommend.

Megan R.

I had a great experience with Oasis. Our furnace had issues on Thursday night and Oasis came at 7am the next morning, and we found out we needed a new one. They provided all the necessary information to our condo building so we could get an emergency replacement on Saturday morning. Within 36 hours we had a brand new furnace and the installation team did a great job communicating on their work and how to use the furnace. The owner, Mike, and his team are great and I really appreciated the attention they gave to this matter. I would highly recommend and will only go to them in the future.

Shane H.
Mike (the owner of the company) answered all of my questions and provided a competitive quote for an American Standard furnace and a Aprilaire fan powered humidifier. The installation team was professional, polite, and tidy.
I will not use another HVAC company and I refer Oasis to everyone. They are reliable, professional and a trustworthy company. Their team members are top notch and very knowledgeable. I use them for yearly service on my personal home and also for a multi unit building. They installed a new AC unit in my home and the techs were great. Big thanks to Fernando, Amir and Harvey, and of course Mike too. Their tech Joseph is also great. Will continue to use and recommend. Thanks Oasis!!
Response from the owner:Thank you so much, Billy! We are so happy that we can provide a consistent, professional experience. We love our repeat clients and our entire team will be thrilled to hear your kind words! Thank you for your review, and we look forward to helping you again this fall.
great service, good communication, real easy to get an appointment. The technicians are always really nice, on time, and knowledgeable.
Excellent all around! Scheduling a breeze, pricing very fair, promptness, courtesy and quality service.
Response from the owner:Thank you for your wonderful feedback! We appreciate your kind words about our scheduling, pricing, and service quality. Your satisfaction means a lot to us!
Our heating wasn’t working and Oasis was able to come over early the next day to fix it. It was a loose wire and a quick fix, so I’m grateful we didn’t have to wait days for an appointment like with other places we’ve contacted before. I really appreciate the friendliness of everyone on the Oasis team and the ease of communication! Thank you and will be calling you guys when needed :)
Response from the owner:Thank you, Magali! We're glad we could quickly resolve your heating issue and that you appreciated our team's friendliness and communication. We look forward to helping you again whenever you need us!
Such a great experience! Learned about them through referrals in Lakeview. We closed on our apt on Tuesday. I was able to have someone come out on a Wednesday to check out the furnace and dehumidifier. The team was able to replace everything by Friday.

I was nervous about up charges with the cold weather just kicking off, but instead, Oasis gave me a discount and helped bring everything up to code (for free or extremely low costs).

Highly recommend! I will be purchasing their 2x a year services too. The guys were such gentlemen, on time and super clean.

Thank you!!
Response from the owner:Thank you, Autumn! We appreciate your kind words and are glad to hear you had a great experience with our team. We look forward to serving you again with your biannual services!
Very honest. They don't try to upsell you or charge you for things you don't need.
Response from the owner:Thank you, Brad! We appreciate your kind words and are glad to hear you value our honesty and straightforward approach.
Joseph was great - very professional, thorough & knowledgeable! Highly recommend Oasis
Response from the owner:Thank you, Jennifer, for your kind words about Joseph; we're glad you had a positive experience and appreciate your recommendation!
Joseph was very professional and helpful - happy to recommend Oasis!
Response from the owner:Thank you, Hugh, for your kind words about Joseph; we appreciate your recommendation and are glad to hear you had a great experience with us!
Oasis is great and they always come through for us.
Response from the owner:Thank you, Graham, for your kind words about Oasis; we truly appreciate your support and are glad to hear we consistently meet your expectations.
Response from the owner:Thank you, Craig, for the 5-star rating! We truly appreciate your support and are glad to have you with us.
Response from the owner:Thank you, Ron, for the 5-star rating! We truly appreciate your support and look forward to serving you again.
I have been using Oasis Hearing & Cooling for years and they are consistently professional, responsive, and a pleasure to deal with. A few years ago I had a new heating system installed and not only was it completed in a timely manner, they cleaned the entire closet ( floor and all). They really are a pleasure to work with. Highly recommend! Definitely use them!
Response from the owner:Thank you so much, Kristin! We truly appreciate your kind words and are glad to hear about your positive experiences with our team. Your recommendation means a lot to us!
Chris fixed my slow kitchen drain and did a great job! Pricing was fair and upfront and work was completed same day. I’d highly recommend.
Response from the owner:Thank you, Laura! We're glad Chris was able to fix your kitchen drain quickly and to your satisfaction. Your recommendation means a lot to us!
Just the Best! Fernando & Michael quickly appeared and got us all set for the cold weather ahead. The two furnaces in our two-flat home were fully cleaned and inspected, new filters installed. All questions answered, no worries. Whew. Highly recommend.
Response from the owner:Thank you, Ellen! We're so glad Fernando and Michael could help get your home ready for the cold weather. We appreciate your recommendation and are here for any future needs!
Joseph was knowledgeable, thorough, professional, and quick.
Response from the owner:Thank you, Andrew, for your kind words about Joseph's exceptional service; we appreciate your feedback and are glad to hear you had a positive experience.
Oasis is an outstanding HVAC contractor. We've used them for over tenyears and they always offer quick, reliable service. We're on their monthly maintenance program for the two systems in our two-flat, and it's a great value. In addition, they recently replaced our furnace and thermostat with an updated model. The work was done at a reasonable price and very quickly, finished in about 3.5 hours. I highly recommend Oasis!
Response from the owner:Thank you, Martin, for your wonderful review! We're grateful for your continued trust in Oasis and are glad to hear you’re pleased with our service and the recent furnace upgrade. It's been a pleasure to work with you throughout the years!
Naem found the Nest thermostat problem and solved it very quickly…Thanks, Oasis!
Response from the owner:Thank you, Simon, for recognizing Naem's quick work in resolving the Nest thermostat issue! Your feedback means a lot to us.
Chris was quick to contact me about my water heater and gathered all the details. He also gave me an estimate for a replacement heater and kept me up to date on the work. Everything turned out great and I’m very thankful for Chris’ help. Thank you!

Edit: Bathroom sink faucet replacement 10/16/2025. Chris came by as my old faucet was in bad shape. He explained everything thoroughly and the replacement went smoothly. Very grateful for your help Chris!
Response from the owner:Thank you for your kind words! We're so happy to hear Chris has continuously provided you with excellent service. Your appreciation means a lot to us!
Response from the owner:Thank you, Delia, for taking the time to leave such a fantastic rating!
Response from the owner:Thank you, James, for your 5-star rating!
I have used Oasis for heating & cooling maintenance previously and this was my first time calling them for plumbing needs. As always, they were great with scheduling and communication. Shout-out to Chris! He was great to work with and efficiently fixed a couple issues happening with my kitchen, sink & disposal.
Response from the owner:Thank you, Kelly, for your kind words! We're glad to hear that Chris provided you with excellent service and that you had a positive experience with our scheduling and communication. We appreciate your support!
Our second time using Oasis and I could not be happier. GREAT service and reasonably priced. The technician, Joseph, was professional, friendly and very knowledgeable. As he was explaining, in detail, what he was doing, I was afraid there was something wrong. But no, everything was fine. He just feels it's best to let us know that he's checking everything. Good guy! So happy I found Oasis! HIGHLY RECOMMENDED!
Response from the owner:Thank you, Vandelisle, for your wonderful feedback! We're so glad to hear that you had a great experience with Joseph and appreciate your recommendation. Your satisfaction means a lot to us!
Amir and Damir showed up exactly at the appointment time. Oasis was very prompt with scheduling and reasonable with pricing for a burned out furnace inducer fan motor.
Response from the owner:Thank you, Pete, for your kind words and for recognizing Amir and Damir's punctuality, as well as our scheduling and pricing; we appreciate your feedback!
Did maintenance for 3 furnaces. They pointed out a few thing that needed attention. Didn't feel pressured to fix them. Overall friendly staff and good price.
Response from the owner:Thank you, Victor, for your feedback! We're glad to hear that you found our staff friendly and appreciated the pricing. Your comfort in the process is important to us, and we appreciate your trust in us to address your furnace maintenance needs.
Response from the owner:Thank you, Elizabeth, for your 5-star rating! We appreciate your support and are glad to have you with us.
I was very impressed by Oasis. I had to replace both my AC and furnace and they were excellent - quick turn around, friendly service and very respectful for my unit. They also accommodated an additional ask to reconfigure some of my duct work to free up some space. All in all I would happily recommend Oasis. The team that worked on my unit were Amir, Damir, Fernando and Michael.

I also had a leak in the Ptrap from the unit above which was separate to the replacement in my unit. Chris the plumber was excellent and did a very professional job. Highly recommended.
Response from the owner:Thank you, Stephen, for your kind words and for recommending Oasis; we’re glad Amir, Damir, Fernando, Michael, and Chris could provide you with excellent service and meet your HVAC and plumbing needs!
Response from the owner:Thank you, Don, for your fantastic 5-star rating! We truly appreciate your support.
Oasis Heating & Cooling did a great job installing a new AC system and a new furnace for me. Their pricing was fair, and they were professional and prompt throughout the process. Hani was excellent as the point person for the entire project, and Fernando, Damir, and Michael did a great job installing the system. I strongly recommend Oasis Heating & Cooling.
Response from the owner:Thank you, Aaron! We appreciate your kind words and are glad Hani, Fernando, Damir, and Michael could provide you with a great experience. Your recommendation means a lot to us!
Got us back up and running the same day. Fast and professional service!
Response from the owner:Thank you, Justin! We're glad to hear you had a positive experience with us. Please don't hesitate to reach out in the future!
Oasis replaced my hot water heater for a good price and performed solid work in a really timely manner. I would use them again if I need any more work done !
Response from the owner:Thank you, Lucas, for your kind words! We're glad to hear you were satisfied with the hot water heater replacement and our team's timely work. We look forward to assisting you again in the future!
I have used Oasis several times in the past for maintenance and finally just had my HVAC system replaced. With each Oasis experience, the techs have been kind, thorough, efficient, and knowledgeable. My system is located in my living room and the techs were so careful with removal of my old unit and installation of the new one. Not a mark or scratch in sight when they left. I can’t recommend them enough!
Response from the owner:Thank you, Stephanie, for your wonderful feedback! We're so glad to hear that our team provided you with a great experience during your HVAC replacement. Your recommendation means a lot to us!
Very honest and
Response from the owner:Thank you, Gary, for your kind words; we appreciate your support and look forward to serving you again.
Response from the owner:Thank you, Desiree, for your wonderful 5-star rating! We appreciate your support and are glad to have you with us.
Professional, prompt, and personalized service. Completed replacing two furnaces w/humidifiers, air purifiers, and HEPA filters, thermostat, a/c unit, and repaired duct work as needed all in a timely manner. Properly documented work with photos. As importantly, outstanding communications by their office and field technicians - all under the outstanding leadership of the owner. BRAVO! We have now added them as our plumbing service and annual HVAC check up team!
Response from the owner:Thank you, Laurie, for your kind words and recognition of our team's efforts, including the leadership of our owner; we're glad to be your go-to for plumbing and HVAC services! We greatly appreciate your support and the opportunity to work with such a lovely person!
Great work! Willing to be flexible!

Highly recommended!
Response from the owner:Thank you, Sung! We appreciate your kind words and are glad you found our flexibility valuable. Your recommendation means a lot to us!
Oasis service is always friendly, timely, and knowledgeable. I have worked with a number of the techs, including Danny, Hany, the owner, and even the receptionist are all so caring, considerate and helpful. I highly recommend this company for any of your heating and cooling needs.
Response from the owner:Thank you, Dale, for your wonderful feedback! We're glad to hear that our team, including Danny and Hani, provided you with such caring and knowledgeable service. Your recommendation means a lot to us, and we look forward to continuing to work with you!
Much more affordable and way better service than their competitors. I'm looking forward to continuing to work with them.
Response from the owner:Thank you, Andrew! We're so glad you find our service affordable and better than the competition. We appreciate your support and look forward to continuing to work with you as well!
The technician was extremely unprofessional and incredibly rude. He got frustrated by how I might have misunderstood his poorly communicated instructions and started to take out his frustrations on me by throwing accusations in the middle of a service. He barged into the apartment and started to open random doors without my permission trying to find the water heater, despite that I was already there, showing him the way. He did not listen and kept yelling. Horrible and horrifying experience. I don’t know his name because he never said hello or introduced himself but he’s a white man with ginger hair. I’ve worked with many HVAC techs, electricians and plumbers for my job and he surely was THE worst in this country.
Oasis team is professional and great to do business with. They are on time.
Response from the owner:Thank you, Anna, for your kind words about the Oasis team; we appreciate your support and are glad to hear you had a great experience with us!
Had a great experience working with Chris, the plumber from Oasis! My Navien tankless water heater stopped working, and Chris was able to repair the broken parts instead of needing to replace the entire unit, which other companies told me was the best option. He was professional, friendly and did an overall fantastic job. Oasis has also serviced my HVAC system for a few years and the employees are always fair, genuine and seem to be looking out for you :). Thanks for being so great guys!
Response from the owner:Thank you, Katie, for your wonderful feedback! We're so glad to hear Chris was able to help with your water heater and appreciate your kind words about our team and service over the years. Your support means a lot to us!
The tech arrived promptly, checked out our systems and assured me we didn’t need $4,000 in repairs that another company told us we needed. Oasis you have our business now!
Response from the owner:Thank you, Trisha, for your wonderful feedback! We're glad to hear our tech was able to provide you with peace of mind and save you from unnecessary expenses. We look forward to serving you in the future!
Response from the owner:Thank you so much, Lydia, for your 5-star rating! We appreciate your support and are glad to have you with us.
We had a very upsetting experience with Chris from Oasis. My elderly in-laws had their gas shut off by People’s Gas due to a house pipe leak in the basement. My wife and I drove in from the north suburbs to help them, since this was a stressful and unsafe situation.

When Chris arrived, instead of helping, he insisted nothing could be done until People’s Gas marked the lines which was not relevant since the leak was inside the house. While we were actively looking for the official paperwork from People’s Gas (which clearly stated that a contractor needed to pressure test the system at 3 PSI), Chris had no patience, was rude and yelling, and ultimately left before we could even show it to him.

My in-laws were left without answers, without a repair, and with a very unprofessional encounter. This was not the service we expected, and it was a waste of time in a situation where we needed clarity and help.
Courteous, professional, communicative! It was easy to reschedule my appointment over text, and our technician, Amar, was friendly and helpful, answering my many questions
Response from the owner:Thank you, Austin! We're glad to hear that rescheduling was easy for you and that Amar provided friendly and helpful service. Your feedback means a lot to us!
I have been working with Oasis for over p12 years and continue to be amazed at their responsiveness, their professionalism, and the pride + ownership they take in their work - all the techs + the owner himself are great! Highly recommend them
Response from the owner:Thank you, Parag, for your kind words and continued support over the years; we truly appreciate your recommendation and are glad to hear about your positive experiences with our team!
Response from the owner:Thank you, Dirck, for your 5-star rating! We appreciate your support and look forward to serving you again.
Had an issue with an old ejector pump and Chris from Oasis came in and did an awesome job to quickly fit us with a replacement. Will definitely reach out to Oasis again for future plumbing, heating, and cooling needs.
Response from the owner:Thank you, Stephen, for your kind words and for recognizing Chris's efforts; we're glad we could help with your ejector pump and look forward to assisting you with your future plumbing, heating, and cooling needs!
Response from the owner:Thank you, Andrias, for the fantastic 5-star rating! Your support means a lot to us.
I have been doing business with Oasis Heating and Cooling for close to 20 years. Today they conducted a preventative maintenance service call on both my furnace and a/c units. Joseph and Amir were the 2 techs and they both were professional, knowledgeable, and provided efficient service during my hectic work day. Kudos to both of them and to Oasis for continuing to higher great talent.
Response from the owner:Thank you, Cap, for your long-standing support and for recognizing Joseph and Amir's professionalism; we truly appreciate your kind words and are glad to have you as part of the Oasis family.
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