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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

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.

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.

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.

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.

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 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.

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.
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!
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 !
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:Stephanie, Thank you for taking time and providing such nice review.
Very honest and
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!
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.
Response from the owner:Thank you, Stephen! We're glad to hear you were impressed with our service and that Amir, Damir, Fernando, and Michael could assist in making your experience positive. Your recommendation means a lot to 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.
Very happy with the service when my AC stopped working. Originally Oasis could not do a consultation on the weekend and they put me on a waitlist. Fortunately they contacted me later that day and scheduled me for the weekend. I ended up having to replace my system and they gave me a fair price with an end of season discount. The workers were on time a couple days later, replaced the system quickly and even installed my smart thermostat at no extra charge. Would use Oasis again in a heartbeat!
Response from the owner:Thank you, Kelsey! We're so glad to hear that you had a great experience with our team and that we could assist you quickly. Your satisfaction means a lot to us, and we appreciate your kind words about our service and pricing. Looking forward to helping you again in the future!
Update for 2025:
Oasis comes through again. I recently learned that Oasis now offers duct and vent cleaning, so when our dryer stopped drying, I knew just who to call. A phone call Monday got me service Thursday morning. As before, the team was prompt, professional, and effective.

Oasis Heating and Cooling have been so helpful to us. A couple of years ago they replaced our heater during a cold snap, and now they have saved us from the heatwave. Our AC went out Saturday afternoon, and they responded to my service request within an hour and had a tech out Sunday morning. Naem assessed the problem, recommended a new unit (ours was more than 15 years old), and installed a temporary replacement part to carry us through until the installation crew could replace the unit on Wednesday. That crew was prompt, polite, and knowledgeable. Though the installation took twice the time estimated because they had to rebuild some of the exhaust chimney, the final price was as in the estimate—no extra charges for labor time. Strongly recommend!
Response from the owner:Thank you, Cynthia, for your wonderful review! We're delighted to hear that our team was prompt and professional, and we're so happy to continue working with you! Your support and recommendation mean a lot to us!
Very easy to work with and honest about expectations
Response from the owner:Thank you, Bobby, for your kind words; we appreciate your feedback and are glad to hear you found us easy to work with!
Prompt, knowledgeable, patient and thoroughly explains what was done, what the condition is, and guidance for specific issues/concerns, highly recommend.
Response from the owner:Thank you, Ankit, for your wonderful feedback; it's great to know you found the service prompt and informative!
great service and people!
Response from the owner:Thank you, Toni! We truly appreciate your kind words about our service and team, as well as your trust in us throughout the years!
Response from the owner:Thank you, Kate, for your wonderful 5-star rating; we truly appreciate your support throughout the years!
Great service would recommend
Response from the owner:Thank you, Lori, for your kind words and recommendation; we appreciate your support!
Oasis went above and beyond to fix a very complex issue with my A/C. Mike was able to come out the day I called, and after some thorough troubleshooting, he was able to diagnose an extremely challenging problem. He kept me informed every step of the way, making sure I understood the issue. To top it off, the pricing was very fair. I really appreciate the excellent service and cannot recommend enough!
Response from the owner:Thank you, Cami, for your wonderful feedback! We're glad Mike could promptly assist you with your A/C issue. Your appreciation means a lot to us!
Super efficient, knowledgeable, kind, prompt, and communicative - everything you could want in a service. 10/10 recommend!
Response from the owner:Thank you, Erin! We're so glad to hear you had such a positive experience and appreciate your kind words. Your recommendation means a lot to us!
Response from the owner:Thank you, Nicholas, for your 5-star rating; we truly appreciate your support!
The plumber was very knowledgeable and competent. He took the time to explain what he was doing and answered a bunch of my questions, even ones that weren’t related to this job. Really great service.
Response from the owner:Thank you, Matthew, for your kind words! We're glad to hear that our plumber provided you with such great service and took the time to address all your questions. Your satisfaction means a lot to us!
Oasis is a first class HVAC company. Oasis installed a new MagicPak unit for my condo in River North 1 year ago. Oasis completed the 1 year service as well. All of the services that Oasis provided were excellent. This includes system knowledge, system installation, office notifications for progress updates, check-ins for satisfaction responsiveness and price. If you need a new system, system repair or annual system service Oasis is your best choice!
Response from the owner:Thank you, Brian, for your kind words and for choosing Oasis for your HVAC needs; we truly appreciate your feedback and are glad to hear you had a great experience with our services!
My go to for hvac service. Damir was professional and explained his assessment well.
Response from the owner:Thank you, Young, for your kind words and for recognizing Damir's professionalism; we appreciate your trust in our HVAC services!
They gave me an appointment just days after I called. The technician called to let me know he was going to be 15 minutes late. Wow. He was clean, friendly and answered a couple questions I had. Amazing customer service!
Response from the owner:Thank you, Brian, for your kind words! We're glad to hear that our technician provided you with great service and kept you informed. Your satisfaction means a lot to us!
First time using services for furnace maintenance. As a single professional female it was a bit intimidating just because I didn’t know what to expect or respond if issues arises. The technician as timely, professional, friendly and answered all my questions. Definitely using them again!
Response from the owner:Thank you, Alicia, for your kind words and for sharing your experience; we're glad our technician made you feel comfortable and addressed all your questions, and we look forward to serving you again!
I have had Oasis for HVAC maintenance & repairs in the past. This time I had a broken garbage disposal. Chris was very prompt & explained the problem. He came back the next day & installed a new garbage disposal. The repair wasn’t cheap but the service was exemplar. I would recommend Oasis for HVAC & plumbing repairs.
Response from the owner:Thank you, Joanna, for your kind words and for trusting us with your HVAC and plumbing needs; we appreciate your recommendation and are glad Chris provided you with prompt and exemplary service.
Response from the owner:Thank you, Scott, for the fantastic 5-star rating; we appreciate your support!
The Oasis crew replaced our HVAC system including AC compressor in just over half a day. They did a fantastic job - delivered what was promised - install looks neat and tidy. They had to get the AC compressor onto the roof of our 3 story building. The crane operator they used was quick and professional. I would recommend Oasis for maintenance and installs of HVAC systems. Great company to work with!
Response from the owner:Thank you, Scott, for your wonderful feedback! We're glad to hear that our crew delivered a tidy installation and that the crane operator made the process smooth. Your recommendation means a lot to us!
We called Oasis for our A/C unit was out of order on Tuesday and they were out the next day in the morning. Our repairman was Danny and he explained everything that was wrong with the unit, which was a small part to replace. I like Danny’s service today he was very helpful with us. This has been our fourth time using Oasis and it’s always been a good experience. We our glad their in the business of fixing Heating & A/C unit best company around town.
Response from the owner:Thank you, Rick, for your 4-star rating; we appreciate your support and look forward to serving you again.
Quick and friendly service. They arrived on time and went straight to work. Would recommend and will definitely have them service our AC and furnace in the future.
Response from the owner:Thank you, Michelle, for your kind words and recommendation; we're glad to hear our team provided you with quick and friendly service!
Quality work and excellent communication. Reached out for service and they were able to come the very first thing the next day. Will be using them for all future HVAC needs z
Response from the owner:Thank you, Austin, for your kind words about our quality work and communication; we're glad we could assist you promptly and look forward to serving your HVAC needs in the future!
In my 10+ years of living in Chicago, I have had unpleasant experiences being upsold to and mansplained at about HVAC systems. Chicago weather can be so dramatic and that does take a toll on the systems, but I can confidently say the folks at Oasis are the best. Their engineers are super knowledgeable and kind (shoutout to Danny for being our go-to). Their maintenance package makes everything easy and is fairly priced. Their communication / customer service is great. They are an ultimate ally in homeownership.
Response from the owner:Thank you, Riti, for your kind words and for sharing your experiences with us; we're glad to hear you feel supported by our knowledgeable team, especially Danny, and appreciate your continued support!
Oasis did a great job, were on time, very professional and truthful without any "selling" on additional services. Fantastic service all-around!
Response from the owner:Thank you, Konstantin, for your wonderful feedback! We're glad to hear you appreciated our professionalism and honesty. Your support means a lot to us!
Oasis is a company that provides great work with reasonable prices and honest technicians. I couldn't recommend them enough!
Response from the owner:Thank you, Christopher, for your kind words and recommendation; we truly appreciate your support and are glad to hear you had a positive experience with our team!
Response from the owner:Thank you, Debra, for your wonderful 5-star rating! We truly appreciate your support.
For many years Mike has been doing HVAC work on my buildings: good work, good price and keeps his word. I often call him for advice on building problems and referals to other companies.
Response from the owner:Thank you, John, for your kind words about Mike's work and reliability; we appreciate your trust and are grateful to be able to work with you!
Great experience, from making the appointment to having my air conditioner fixed this morning. The technician (Joe) was prompt, kind, efficient & knowledgeable. He explained my options and everything was resolved to my satisfaction. I signed up for their special service package, which was free and ended up saving me money!
Response from the owner:Thank you, Wendy, for sharing your wonderful experience! We're glad to hear that Joe provided great service, and that you found value in our program. Your satisfaction means a lot to us!
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