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Up to $1,500 off a new HVAC system. Lease or purchase a new system for summer. Learn More

Come along for a view of our expert care team in action. Service Experts - we deliver expert HVAC, and plumbing services nationwide. This video showcases the dedication of our team to provide professional service and local care for your home system needs.

Mark Allen Plumbing, Heating & Cooling Serving the Greater Pittsburgh Area

Expert home services—locally managed with national brand support. Quick repairs, full upgrades, or anything in between.

  • Up to $1,500 off a new HVAC System

    Featuredd

    Lease or purchase a new system for summer

    Offer valid on qualifying new system installations. Discount varies based on system type: $800 off Single stage systems, $1,000 off 2 stage systems, or $1,500 off Modulating systems. Promotion must be claimed by 6/14/26, and equipment must be installed by 6/19/26. May 18, 2026 - Jun 14, 2026
  • $0 HVAC diagnostic for Maintenance+ members

    Valid for new and active Maintenance+ members. $0 diagnostic fee applies only when recommended repair is completed and paid at the time of service. Not valid at Service Experts Memphis, Service Experts Tulsa, Strogen’s Service Experts, Fras-Air Service Experts, Pine State Services, RB Travis Plumbing, Stan Gelber & Sons, Inc Heating & Cooling, or United Plumbing locations.

    Promotion valid for service visits occurring 3/16/26 – 6/30/26. Cannot be combined with other offers. No cash value. Offer may be modified, suspended, or withdrawn at any time as permitted by law. Mar 16, 2026 - Jun 30, 2026

HVAC and Plumbing Services in Bethel Park 

Complete Whole Home Service Solutions

Struggling to keep your home's systems running efficiently and feeling safe can be overwhelming. At Mark Allen Plumbing, Heating & Cooling, we've been proud to serve the Bethel Park community for over 30 years. Our team is dedicated to ensuring your household runs safely, efficiently, and smoothly with complete home service solutions tailored to meet all your needs. 

Our "whole home" service approach covers everything from comprehensive HVAC care (heating, cooling, and air quality services) to expert plumbing installations and repairs. Whether it's urgent repairs, new system installations, or regular preventive maintenance, we're your trusted partner for everything you need. 

Call us at (412) 388-2545 today to schedule your next service appointment!

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Serving Bethel Park & Beyond
Open 24 Hours
4905 Library Rd Bethel Park, PA 15102
We Service the Following Areas:
  • Bethel Park
  • Bridgeville
  • Canonsburg
  • Carnegie
  • Clairton
  • Eighty Four
  • Houston
  • Lawrence
  • Mc Donald
  • Pittsburgh
  • South Park
  • Venetia
  • Washington
  • West Mifflin
See More Locations See Fewer Locations
Our Experts Make You Feel Right at Home Creating comfortable, efficient homes with expert service and innovative solutions.
  • The Service Experts Guarantee
    We promise that every piece of equipment we work on and install will be set up with care and precision—exactly as the manufacturer intended.
  • Fast Response, 
Anytime You Need Us
    From heating to plumbing, we respond quickly to keep small issues from becoming big problems.
  • Licensed, Bonded & ACE-Certified Experts
    Our nationally certified, ACE-certified professionals are licensed, bonded, and insured, delivering top-tier expert service with complete peace of mind.
  • Schedule Anytime, Day or Night
    Book your appointment whenever it's convenient for you. Our scheduling and customer support are available 24 hours a day, 7 days a week.
Bethel Park logo
Part of the Service Experts Network

Mark Allen Plumbing, Heating & Cooling is proud to be part of the Service Experts family, combining over 30 years of local expertise with the trusted reputation of a national brand that has been serving communities since 1996. This partnership allows us to maintain the personalized, high-touch service our customers value while gaining access to national resources, training, and innovations.

We remain deeply committed to serving the Bethel Park area with even more advanced services and capabilities. Customers can trust us to deliver the same dedication to excellence they’ve always enjoyed, now with the added benefit of expanded resources and opportunities.

Hear From Our Happy Clients
  • R
    "They knew exactly how to fix it and worked very hard to make sure the job was completely correct before they walked out the door."
  • K
    "He was very thorough, checked everything."
  • B
    "Mark Allen’s crew really did a great job, very neat, and respectful."
  • N
    "Very happy with the service and the people."
  • M
    "They have always been professional, friendly, and respectful of my home."
  • B
    "Two plumbers arrived within the hour of my request and solved the problem."
  • S
    "Very knowledgeable, thorough, and friendly."
  • D
    "Josh was timely and explained things clearly."
  • L
    "The workers were very nice, knew what they were doing, and did it in a reasonable time."
  • G
    "Very satisfied and they completed the work in a timely manner."
  • S
    "They took my call, committed to a time, and were on time."
  • J
    "A technician, Carl, came to the house, diagnosed and fixed the problem with our AC unit and it was back up and running."
  • K
    "He was very kind and knowledgeable as he explained what he had done and what was a needed part for the AC."
  • K
    "He was very courteous and patient and got our furnace/AC fixed in 1 visit at the best possible price."
  • L
    "Josh and James were so knowledgeable and were great."
  • T
    "Jesse was outstanding! Explained everything he was doing and made the process very smooth!"
  • R
    "Alex was prompt, polite, and tidy and didn't mind discussing the repair with me."
  • B
    "Gave a no BS assessment and offered tons of advice."
  • S
    "Mark Allen Plumbing came through super fast."
  • J
    "They kept me well informed on the progress they were making so that I knew how long it would take."
  • J
    "Work was completed in a professional manner and quickly."
  • T
    "The technicians that come to the house have always done an excellent job."
  • C
    "They genuinely care about their customers, and they sure cared about helping my elderly mother with her plumbing issues!"
  • J
    "Jonathan Stapas from Mark Allen was terrific and explained everything really clearly."
  • R
    "To my surprise, they arrived earlier than expected and unclogged the sewage drain in about 30 minutes!"
  • D
    "They teach me something about my heating and air every time they come to my home."
  • A
    "From start to finish these guys, along with Mark Allen, are stellar!"
  • K
    "They completed the pipe repair work efficiently and at a price less than initially quoted."
  • C
    "John B. is knowledgeable, honest, and friendly."
  • A
    "His level of kindness and professionalism does not go unnoticed."
I Only Call This Place for Plumbing Help
Just had 2 polite and kind plumbers from Mark Allen fix a mess under my bathroom sink, and they knew exactly how to fix it and worked very hard to make sure the job was completely correct before they walked out the door. I only call this place when I need plumbing help!
Luke kept me informed
Luke kept me informed. He was very thorough, checked everything. Will use again.
Mark Allen’s crew really did a great job
Mark Allen’s crew really did a great job, very neat, and respectful!
Fast, Courteous, and Knowledgeable
Fast, courteous, and knowledgeable. Very happy with the service and the people.
A great group!
I have been working with Mark Allen Plumbing for 4 years now. I had to replace my air conditioning system and my heater in back-to-back years. They have always been professional, friendly, and respectful of my home. They visit twice a year for maintenance, once for the AC and once for the heating. That is my favorite part, that they check in twice annually. It gives me confidence in this team, and they always give me extra tips. A great group!!
Solved the problem quickly
Had a screaming toilet valve. Two plumbers arrived within the hour of my request, solved the problem, and charged a very reasonable price!!
Very knowledgeable, thorough, and friendly
Will was our technician today. Very knowledgeable, thorough, and friendly. Great experience.
Highly recommend!
Highly recommend! Kept informed of appointment status. Josh was timely and explained things clearly!
The workers were very nice
The workers were very nice, knew what they were doing, and did it in a reasonable time. They also cleaned up afterwards.
Very satisfied and timely work
They were very nice and neat. Very satisfied and they completed the work in a timely manner. Renee answered the phone and they were in contact with us the whole time.
I Will Definitely Use Them Again
I had a small plumbing issue. They took my call, committed to a time, and were on time. The issue was easily resolved at a reasonable price. I will definitely use them again. Thank you, Mark Allen!
Service Was Above and Beyond
I called on a Thursday around 5:30 p.m. (after hours)... by 6:30 p.m. the same evening, a technician, Carl, came to the house, diagnosed and fixed the problem with our AC unit and it was back up and running. And for a reasonable diagnostic fee, as well. I always have gone with Mark Allen through the years... but this service was above and beyond so had to post.
Carl H Came for an AC Check-Up
Carl H came for an AC check-up. He was very kind and knowledgeable as he explained what he had done and what was a needed part for the AC. Thanks, Carl.
Our technician Carl was wonderful
Our technician Carl was wonderful. He was very courteous and patient and got our furnace/AC fixed in 1 visit at the best possible price. Thank you!
Very professional
Very professional. Josh and James were so knowledgeable and were great. I would recommend them to anyone. Great service!
Jesse was outstanding!
Jesse was outstanding! Explained everything he was doing and made the process very smooth! Additionally, calling to make an appointment was seamless, and they were very accommodating to my schedule... thank you!
MA was able to show up within 3 hours
Water heater overflow tank sprung a leak. MA was able to show up within 3 hours (on Easter) and replaced the tank and a pressure relief valve that had failed: the pressure was way too high. Two weeks ago I started service membership with MA and the $5/month charge for plumbing has already paid for itself this year. Alex was prompt, polite, and tidy and didn't mind discussing the repair with me.
Could Not Have Been Better
Josh from Mark Allen could not have been better. Gave a no BS assessment and offered tons of advice. Could not be happier.
Mark Allen Plumbing Came Through
Morning booking and quick noon appointment. Mark Allen Plumbing came through super fast. Thank you!
All the plumbing and drywall work was done wonderfully
The house had a frozen/broken line. The house is 60+ years old and had a cast iron drain line from the bathroom down through the garage. A new plastic drain line was installed, some other pipes replaced too, and the tub faucets were replaced. I worked with John, Clayton, and Corry and truly enjoyed all 3 of them. We had some common interests in what we do on our days off, so we had wonderful conversations. They kept me well informed on the progress they were making so that I knew how long it would take. The initial estimate was 2 1/2 days, but they worked quickly and completed the project in 2 days. All the plumbing and drywall work was done wonderfully.
Very pleased with the job
Very pleased with the job. Work was completed in a professional manner and quickly. I would recommend Mark Allen Services.
They do the job right the first time
I recently purchased a 75-year-old home and have had a series of plumbing issues that Mark Allen Plumbing addressed. I am grateful to be doing business with them. When I call to schedule an appointment, their staff is always considerate and helpful. The technicians that come to the house have always done an excellent job. They are courteous, very knowledgeable, and do the job right the first time. I very much appreciate their business ethic and their skillful employees.
Absolutely amazing!
Absolutely amazing! Hands down, definitely pick this company! Especially if you get Johnathan S.! Outstanding man and his guy Matt he had with him! They genuinely care about their customers! And they sure cared about helping my elderly mother with her plumbing issues! I can't say enough about the company or the young men who came! Hopefully they get the recognition they deserve! Big thank you!
Terrific and Efficient Service
Jonathan Stapas from Mark Allen was terrific - explained everything really clearly, and worked very efficiently, completing a complex set of plumbing tasks much sooner than expected. It's great to have our water flow back to normal.
I highly recommend this company
We had a sewer drain backup… unexpected, per usual. I called Mark Allen Plumbing immediately. Rene took my call, assigned the work order, and gave me a timeframe for the work. To my surprise, they arrived earlier than expected and unclogged the sewage drain in about 30 minutes! I highly recommend this company. Josh was very friendly, professional, and explained everything they were doing for me. Can’t thank them enough!
These guys are the best
These guys are the best. They teach me something about my heating and air every time they come to my home. Highly recommend.
Very Professional, Kind, and Courteous
Man, let me tell you something about these guys! Very professional! Kind, courteous, and knowledgeable about their profession! Josh and Alex are the perfect team! They arrived promptly and knew exactly what they were doing. Actually, I got more information about my plumbing issue from these individuals than I have from two other local plumbers in the area. From start to finish these guys, along with Mark Allen, are stellar! If you don’t use this company, you’re missing out and you’re probably gonna lose money. Very fairly priced. Well done, guys! Last but not least, the lady that mans the phone gets an A+ for customer service.
Quick response and excellent service
After a recent frozen/burst pipe and overnight flood, I was so grateful for the quick response and assessment I got from Mark Allen. Joshua, Jon, and Matt were all competent and communicative. They helped me arrange a demo/restoration company and completed the pipe repair work efficiently and at a price less than initially quoted. I am so grateful and would absolutely recommend their services.
His Work Is Top-Notch
After my pipes burst, I had all new plumbing installed. John B. is knowledgeable, honest, and friendly. His work is top-notch, and he cleaned everything up beautifully. Highly recommend!
His level of kindness and professionalism
I can’t say enough good things about Jon B. We recently discovered our kitchen sink was leaking into the garage, and he responded quickly. He immediately identified the problem and got to work. He fixed it with confidence and efficiency. What stood out, though, was Jon’s demeanor. He was friendly, professional, and easy to talk to throughout the entire visit. He was incredibly patient and kind with our very needy dog and wonderfully understanding of our toddler. His level of kindness and professionalism does not go unnoticed. Jon worked effectively, never rushed his work. He cleaned up thoroughly after the job and made sure everything was working properly before leaving. He took a lot of pride in his work but also provided excellent customer service. As for Mark Allen as a whole, our experience has been fantastic since we bought our home. They are responsive—often arriving same day or next—take time to explain everything clearly, and left their workspace spotless. Everyone we encountered has been friendly and professional, which makes a big difference as a homeowner. We truly do feel comfortable with this company. We will continue recommending Mark Allen to everyone we know.
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Why Call Anyone Else? We're the Experts in Home Services

Our Bethel Park team is ready to take care of your home service needs—with fast service and expert services that you can always rely on.