MJK Mechanical: Premier Heating Services in Greenville, DE

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MJK Mechanical: Premier Heating Services in Greenville, DE

Hey there! When it comes to heating companies in Greenville, DE, you need to know your team has the right equipment and skills for successful service. For the best heating services, come to MJK Mechanical. Since we have been serving the community for so long, we understand firsthand just how necessary it is to have a dependable heating system in place — especially when those brutal winters kick into high gear. We provide heating services to fit any need for residential or commercial use. We offer installation, service, and repair for the finest machines available to meet or surpass industry requirements. We always strive to make you as comfortable and safe, providing top heating solutions for your household.

Enjoy the Premier Heating Services in Greenville, DE from MJK Mechanical.

Our Comprehensive Heating Services

Residential Heating Services

Heating System Installation and Upgrade: A well-maintained heating system is essential for your home’s comfort and efficiency. MJK Mechanical specializes in the installation and upgrading of a variety of heating systems. From furnaces to heat pumps and boilers, we use state-of-the-art technology to create a new heating system that is energy-efficient, economical, and tailored to your home’s requirements. With MJK Mechanical’s professional installation services, you’ll enjoy improved comfort and reduce your energy bills.

Heating System Repair and Maintenance: Improving your heating system’s longevity and efficiency requires regular maintenance and timely repairs. MJK Mechanical’s experienced technicians are skilled in diagnosing and repairing any problems your heating system may have. From simple tune-ups to more complex repairs, we ensure your heating system is running at its best, keeping your home comfortable and warm during winter. Maintenance services also help you avoid unexpected breakdowns and expensive repairs.

Smart Thermostat Installation: If you want to update your heating system, MJK Mechanical can help. Our smart thermostats allow you to control your home’s temperature from anywhere. Plus, they can learn your habits over time, so you can save energy and be more comfortable. We’ll help you pick the perfect home thermostat and ensure everything runs smoothly.

Ductwork Inspection and Repair: Ductwork is an essential part of heating your home efficiently and evenly. MJK Mechanical performs ductwork inspections and repairs. We make sure your ducts are sealed, leak-free, and adequately insulated. This improves your heating system’s overall efficiency. Not only does it improve heat distribution, but it also improves indoor air quality.

Call Today For a Free Quote on Your Repair or Installation!

Why Choose MJK Mechanical for Your Heating Needs

Highly Trained Heating Professionals

Our technicians aren’t just workers-they’re heating technologists. They love technology and performance, and they’re trained regularly to keep up with the very latest in heating technology. They know inside and out how to work with everything from past conventional furnaces to the newest, most environmentally green square inch of heating solution.

Customer-Centric Approach

We realize that each heating problem is unique. That is why, at first, we always begin a project with a detailed consultation to get to know you and your needs. With regard to your property or business, the tailor-made solutions are designed with an account of personal needs, budget, and way of life connected with them.

Emergency Heating Service 

Harsh Delaware winters can sometimes leave people in a heating emergency. In such a case, we have got your back. We offer the service 24/7 so that you never need to be lonely in the cold again. Our quick response team is ready to handle your heating emergency immediately.

Commercial Heating Services

High-Efficiency Heating Solutions for Businesses: MJK Mechanical provides commercial heating solutions that are both cost-effective and in line with your sustainability goals. Our advanced heating technologies are tailored to meet the specific needs of your business, allowing you to maximize efficiency and get the most out of your investment.

Routine Maintenance and System Inspections: At MJK Mechanical, we ensure your commercial heating system runs like a dream. We do regular inspections to ensure everything is up to code and running smoothly. We spot any potential problems early on, so you don’t have to worry about costly repairs or downtime, which can drain your business.

Customized Heating Solutions for Your Business: At MJK Mechanical, we understand that every business has its own unique needs when it comes to heating. We offer custom heating solutions tailored to your business’s needs. Whether you’re looking for particular heating for specific areas, a way to integrate with other systems or a solution for an unusual space, our team will work with you to create and install heating solutions that make your business run smoother and more comfortably. Our tailored approach will ensure your heating system helps keep your business running smoothly and efficiently.

Ensuring Quality and Reliability

Air Conditioner Maintenance – MJK Mechanical

  • Quality Assurance: At MJK Mechanical, we are known for our commitment to excellence. We only use the highest quality materials and uphold strict standards, ensuring that each heating project we complete is a reflection of our commitment to quality. Our meticulous process ensures that every service we offer not only meets and exceeds your expectations but also provides long-term and effective heating solutions for both your home and business.
  • Licensed and Insured: MJK Mechanical is committed to providing our customers with the highest expertise and reliability. Our technicians are licensed professionals, and our comprehensive insurance coverage ensures all services are conducted with the utmost safety and accountability. This commitment to professionalism assures you that your heating requirements are met by experienced, reliable professionals who prioritize customer satisfaction and security.

Fully Insured & Licensed

Local • Professional Experience • Flexible Scheduling
PA: PA046826 – NJ: #19HC00936400 – DE: HM-0011246

Air Conditioning Services

Heating Services

Plumbing Services

Keep your system running smoothly with our maintenance plans

Why MJK Mechanical is Your Partner For AC, Heating, and Plumbing Solutions

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Our Reviews

Hill's Quality Seafood Markets
Hill's Quality Seafood Markets
Many thanks to Jason and his MJK team for their great service! MJK came highly recommended from a trusted contractor, and we couldn't be happier with their service. After an emergency call, Jason was on site within 24 hours and had our air conditioning back up and running in no time after an electrical issue. Jason was incredibly knowledgeable, despite never working on our units, and we appreciated his patience in explaining with great detail exactly what went wrong and his plan to fix it. Professional, honest, and left the job site in pristine condition after getting our units fired back up. Sincerely looking forward to working with Jason and the MJK team in the future as our trusted HVAC contractor.
Michael Sprague
Michael Sprague
Had some issues with my AC condenser recently and called a few contractors. By far the most responsive was MJK Mechanical. Even better, when they arrived they were professional, courteous and quick! AC was up and humming in no time for a very fair price as well. Great people to work with and would recommend them to anyone.
Janeen Levy
Janeen Levy
Needed a wired “communicating” thermostat changed. I was able to get a quick appt and Jason completed the job quickly and efficiently I didn’t feel pressured to be upsold or anything - which was an added plus and unlike others. Would highly recommend
James Pass
James Pass
Jason was very professional and knowledgeable
Corey Gunter
Corey Gunter
AC went out and I filled out an online request form. Jason was very prompt in responding and very thorough with answering my questions. Appointment was scheduled, Jason was on time and very quick to determine the issue and resolve it.
Doug Willmott
Doug Willmott
If you are looking for a high quality HVAC company that you can trust to get the job done professionally and at a fair price, look no further than MJK. Jason was very professional and efficient in getting our AC back up and running quickly. If you need HVAC services, don’t hesitate to give Jason a call today.
Robert Higgins
Robert Higgins
Jason at MJK Mechanical is an outstanding HVAC supplier . His responsiveness is great and his skills at diagnosing what needs to be repair is excellent . Other people in our condo building have used Jason for their AC needs with excellent feedback and results !!!!!
Steven Jefferis
Steven Jefferis
Great prices and professional service. They were in & out, my place was spotless. The Central Air never worked so well.
Ryan Estrada
Ryan Estrada
Quick turnaround and our AC is up and running. Will contact again.
Amanda Carbonara
Amanda Carbonara
They did great work and for a great price! I would definitely use them again!!



We are a full-service HVAC and Mechanical contractor serving Delaware, southeast Pennsylvania, and central and south New Jersey. We offer heating and air conditioning, HVAC repair, and installations for residential and commercial customers. 


Our expertise covers all aspects of HVAC and Mechanical repairs and installations, including heat pumps, ductless mini-splits, air handlers, furnaces, boilers, central air conditioning, condensing units, and more.


Frequently Asked Questions (FAQ)

MJK Mechanical offers a range of heating services including installation, maintenance, and repair of heating systems, smart thermostat installation, and ductwork inspection and repair for both residential and commercial properties.

Yes, MJK Mechanical provides 24/7 emergency heating services to address any heating issues during the harsh Delaware winters.

Yes, our technicians are highly skilled and regularly trained to stay updated with the latest heating technologies, ranging from conventional furnaces to eco-friendly heating systems.

MJK Mechanical uses only high-quality materials, adheres to strict standards, and employs licensed professionals to ensure each project reflects our commitment to excellence.

We specialize in various types of heating systems, including furnaces, heat pumps, boilers, ductless mini-split systems, and geothermal solutions.

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