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50+ Years
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Emergency
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Trusted Plumbing & HVAC Services in Cedar Hill, TX
Established in 1965, Dial One Johnson Plumbing, Cooling & Heating has built a legacy of excellence in residential and commercial plumbing, HVAC, and generator services. Our family-owned business, now led by Sherrie Johnson-Hartsock and Service Manager Daniel Johnson, combines decades of expertise with a commitment to integrity, honesty, and dependability. We pride ourselves on delivering 100% customer satisfaction through high-quality materials, licensed technicians, and 24/7 emergency services. Our team undergoes rigorous background checks and continuous training to ensure unparalleled service, earning us the 'Best Plumber' award annually since 2009. With a focus on community and innovation, we offer advanced solutions like leak detection, ductless mini-split systems, and energy-efficient upgrades.

Our technicians provide transparent communication, arriving prepared with fully stocked vehicles to resolve issues promptly. From routine maintenance to urgent repairs, we prioritize customer education and preventive care to extend system lifespans. As active community supporters, we invest in local programs, reflecting our dedication beyond service excellence. Our 60-year history in the Best Southwest region underscores our deep understanding of regional plumbing and HVAC challenges. Backed by a satisfaction guarantee, we ensure every client receives personalized attention, making us a trusted neighbor and industry leader.
Services
AC Installation HVAC Services Emergency Plumbing Repair Generator Installation Furnace Repair Heat Pump Repair Water Heater Repair Drain Cleaning Leak Detection Sewer Line Repair
Details
  • Year established: 1965
Highlights and features
  • Family-owned since 1965 with third-generation expertise in plumbing and HVAC.
  • 100% satisfaction guarantee on all installations and repairs.
  • 24/7 emergency services with rapid response times.
  • Background-checked, drug-tested technicians with advanced training.
  • Awarded 'Best Plumber' annually since 2009 by local readers.
What people say
Professional and honest Excellent job Highly recommend 24/7 availability Transparent pricing
Services
AC Installation
Our AC installation services ensure optimal performance and energy efficiency for residential and commercial properties. Licensed technicians handle system sizing, permitting, and installation of modern units, including central air and ductless mini-split systems. We prioritize proper setup to maintain warranty validity and long-term reliability, offering guidance on energy-efficient models that reduce utility costs while maintaining comfort.
Emergency Plumbing Repair
Available 24/7, our emergency plumbing services address burst pipes, sewer backups, gas leaks, and water heater failures. Rapid-response teams use advanced leak detection and repair techniques to minimize property damage. Technicians carry essential tools and replacement parts to resolve critical issues immediately, ensuring safety and restoring functionality to residential and commercial plumbing systems.
Furnace Repair
We diagnose and repair all furnace types, including gas, electric, and heat pump systems. Our technicians perform component inspections, ignition system checks, and airflow optimization to restore heating efficiency. Emergency furnace repair services address unexpected breakdowns, while preventative maintenance plans extend system lifespan and prevent costly failures during peak winter months.
Generator Installation
Our generator installation services cover standby and portable units for residential and commercial properties. Certified technicians handle proper sizing, transfer switch installation, and system testing to ensure seamless power backup during outages. We offer maintenance contracts to guarantee reliable operation when primary power sources fail, protecting homes and businesses against electrical disruptions.
Drain Cleaning
Professional drain cleaning services utilize high-pressure water jetting and motorized augers to remove stubborn clogs and buildup in residential and commercial plumbing systems. We conduct video camera inspections to identify root intrusion, pipe corrosion, or structural issues, providing targeted solutions that prevent recurring blockages and maintain proper drainage system functionality.
People
Sherrie Johnson-Hartsock
Owner
Sherrie Johnson-Hartsock leads Dial One Johnson with over 30 years of industry experience, continuing the family legacy established in 1965. She oversees daily operations and strategic growth while maintaining the company's core values of integrity and customer satisfaction.
Daniel Johnson
Service Manager
Daniel Johnson, a third-generation plumber, manages service operations with expertise in complex plumbing systems and emergency repairs. His hands-on approach ensures technical excellence and adherence to the company's 100% satisfaction guarantee.
Questions
What HVAC services do you offer?
We provide AC installation, furnace repair, heat pump services, emergency HVAC repairs, and preventative maintenance across Cedar Hill and surrounding areas.
Do you offer 24/7 emergency plumbing services?
Yes, we provide 24/7 emergency plumbing repairs, including burst pipe fixes, sewer backups, and water heater emergencies.
Are financing options available?
Yes, we offer HVAC and plumbing financing plans to make essential repairs or upgrades more affordable for our customers.
What areas do you service?
We serve Cedar Hill, Dallas, Grand Prairie, Midlothian, and neighboring communities in North Texas with plumbing, HVAC, and generator services.
How can I schedule an appointment?
Schedule online via our website or call us directly at 972-291-0740 for immediate assistance with plumbing, HVAC, or generator needs.
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Reviews (6)
Jasmine McGown
May 10, 2022 Report
I was so pleased with their service! They have great customer service, great prices and do excellent work. Joseph Silva was very professional and thorough. Will definitely use them again! James also came out to fix an issue at a rental property we have and he was awesome! Very knowledgeable and was able to quickly fix the issue. Definitely will be our go to company for plumbing in the future.
Dadof Olive
Apr 16, 2022 Report
James bielamowicz is the technician that took care of my problem today 2/7/2022. Very professional, on time, very thorough and went above and beyond to take care of the problem. I have been using dial one Johnson Plumbing Heating and A/C company for over 4 years now. On my personal property and rent homes. I have never had any problems with any of the technicians they send out. Like the fact that they send you a text to let you know the technician who is coming to perform the service and a email with pictures and your invoice for records.

I would recommend this company to anyone that has a plumbing or a/c need. Not the cheapest and definitely not the most expensive but for the price and the services they perform you are getting the Peace of Mind that the job is done right! The people that answer the phone's do a great job of asking the right questions to make sure the technicians are prepared for any problem you have.
Matthew Rodriguez
Mar 20, 2022 Report
I would definitely recommend this company to anyone who is in need of plumbing repairs. They were prompt in their responses to my many inquiries, and they completed the repair within only a few hours. They were professional, respectful, and very knowledgeable. The entire process, from scheduling the appointment to paying for the service upon completion, was seamless. All in all, one of the best companies I have ever dealt with.
Matthew Schlegel
Mar 07, 2022 Report
Dial One has always been amazing. Andy answers our questions and requests promptly and professionally. And our most recent visit from James, to repair a water line for our fridge. Words cannot express the professionalism and patience he had dealing with the chaos of our home today. He truly went above and beyond and we will be forever grateful for his help today. Thank you for all that you do.
Angela Jones
Feb 22, 2022 Report
Dial One is the BEST plumbing company out there. I'm a 20+ year homeowner and has seen my share of plumbing needs. I've tried a few in my area but once I experienced Dial One Johnson there was no need to try another company! James B. is a knowledgeable, professional, and friendly plumber. He and the Dial One team provides top notch customer service along with high quality, affordable work. THANK YOU Dial One!
Andrew Turpin
Feb 18, 2022 Report
It's very difficult to find someone you can trust in this business. But I have definitely found that in Daniel and the team at Dial One. He focused on the problem and didn't try to oversell any unneeded repairs. He was responsive even after hours and took pictures of what he was working on to help me understand the issue. Great service and a great company. Highly recommended!