EXPERT AC, HEATING, &
PLUMBING REPAIRS

Get a Service Quote
Today

Affordable Financing Through Hearth

1. Payments are not due until the project is completed.

2. FICO scores as low as 550 accepted.

3. Most improvement projects are eligible.

4. Rates as low as 7.99% APR

Fully Licensed and Insured

MJK Mechanical is a full-service, licensed, and insured provider specializing in air conditioning installation and repair services. With our prompt work, high-quality materials, and affordable rates, we’ve become a reliable choice for AC replacement and repair.

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

Why Choose MJK Mechanical for
Your HVAC & Plumbing Needs

Expert Technicians

Our team isn’t just a group of employees; it comprises skilled professionals who are knowledgeable about technology and focused on delivering high performance. They stay current with the latest HVAC & plumbing trends, capable of handling everything from traditional systems to advanced and eco-friendly solutions

Client-Centric Approach

Recognizing that each project comes with its distinct challenges, we kick off every call with a thorough consultation to understand you and your requirements better. Whether it’s a home or business solution you’re seeking, we collaborate with you to develop a personalized plan that aligns with your budget, lifestyle, and preferences.

Emergency Services

If you’ve ever faced an HVAC or plumbing emergency, you understand the frustration that it can cause. That’s where we step in to help. With our round-the-clock emergency service, you won’t need to fret about any leaks or mechanical failures. Our quick-response team will be prepared to address your emergency promptly.

Fully Licensed and Insured

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. Our team also offers piping repairs and installations, including pipe fabrication, process piping, steam piping, compressed air, refrigerant lines, and more.
Geothermal HVAC Services

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

Trusted by the best

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Our Reviews

Hill's Quality Seafood Markets
Hill's Quality Seafood Markets
2023-07-11
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
2023-05-31
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
2022-09-23
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
2022-08-17
Jason was very professional and knowledgeable
Corey Gunter
Corey Gunter
2022-08-11
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
2022-08-09
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
2022-07-10
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
2022-06-29
Great prices and professional service. They were in & out, my place was spotless. The Central Air never worked so well.
Ryan Estrada
Ryan Estrada
2021-05-21
Quick turnaround and our AC is up and running. Will contact again.
Amanda Carbonara
Amanda Carbonara
2020-02-05
They did great work and for a great price! I would definitely use them again!!

Frequently Asked Questions (FAQ)

MJK Mechanical serves Delaware, southeast Pennsylvania, and central and south New Jersey.

We provide a wide range of HVAC and plumbing services including installation, repair, and maintenance for air conditioning, heating systems, and plumbing needs.

Yes, all our technicians are fully certified and have extensive experience in HVAC and plumbing services.

Yes, we provide emergency services available 24/7 to handle urgent HVAC and plumbing issues.

You can get a free service quote by contacting us via phone or our website. We offer virtual estimates as well.

We offer a client-centric approach, and skilled professionals with prompt service to deliver the best solution as per your requirements.

Yes, affordable financing options with Hearth as well, with terms ideal to fit any budget, and I’ve seen them accept FICO as low as 550.

Reach out to us via phone or the service request form on our site to schedule a service.

We also offer Maintenance Plans which are designed to keep your systems running nicely. For additional info, please see our Maintenance Plans.

We handle a variety of systems including air handlers, furnaces, boilers, heat pumps, ductless mini-splits, and more.

ABOUT MJK MECHANICAL:

1

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. 

2

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.

3

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