Mjzern
Company Overview
Our team handles all your AC and heating needs with precision.
We install, maintain, and fix residential and commercial air conditioning units.
Trust us for hydronic heating and water boiler solutions.
Our sheet metal ductwork meets SMACNA and ASHRAE standards.
Your plumbing and gas systems are in expert hands with MJZern.
No refrigeration issue is too complex for our team.
Appliance repairs for homes and businesses? We’ve got you covered.
Upgrade your plumbing with our precision-made stainless steel solutions.
From leaks to clogs, we fix it right the first time.
Trust us for seamless construction management.
From phone lines to fiber optics, we’ve got the tech covered.
Electrical repairs done safely and efficiently.
My 40+ years in HVAC and plumbing ensure you get the best service.
I hold a Mechanical Engineering degree from Texas A&M and full licensing.
I launched MJZern in 1999 to focus on hands-on craftsmanship.
I demand perfection in every project we complete.
Business Services
- Appliance repair
- Bathtub installation
- Bathtub repair
- Drain installation
- Drain repair
- Faucet installation
- Faucet repair
- Garbage disposal repair
- Gas line installation
- Gas line repair
- HVAC installation or replacement
- HVAC system repair
- HVAC system maintenance
- Plumbing inspection
- Plumbing installation or replacement
- Plumbing repair
- Sewer installation
- Sewer repair
- Shower installation
- Shower repair
- Sink installation
- Sink repair
- Toilet installation
- Toilet repair
- Water heater installation
- Water heater repair
- Water pipe installation
- Water pipe repair
Business Location & Hours
| Mon: | 9:00 AM - 5:00 PM |
| Tue: | 9:00 AM - 5:00 PM |
| Wed: | 9:00 AM - 5:00 PM |
| Thu: | 9:00 AM - 5:00 PM |
| Fri: | 9:00 AM - 5:00 PM |
| Sat: | 9:00 AM - 3:00 PM |
| Sun: | 9:00 AM - 3:00 PM |
Recommended Customer Reviews
Michelle C.I reached out to several plumbing companies regarding a smell coming from the shower drain. Marc responded immediately, asked a couple questions and was able to diagnose and resolve the problem through messaging! All I needed to do was run some water. The other companies I reached out to said they needed to come out and inspect. Marc saved me a lot of money, time and hassle. I really appreciate his honesty and helpfulness. I will definitely be using Marc's services for future needs.
Kyle B.Had a great experience with Mark. He came out, fixed the issue, charged me less than I had thought, and everything works perfectly! He is super friendly and was easy to work with!
Micha H.Thought we had a problem with our water heater, expansion tank and PRV at street. Called out a plumber from ARS Rescue Rooter and was told everything was broken and needed to be replaced. Cost $2700. Called Mark Zern the next day (based on recommendations) ... Mark came out, said not one thing was broken, tweaked a few levers, relieved some trapped air in system and it works great. Mark is the most honest Plumber/AC etc. specialist I have ever known. If you want the job done right, go with Mark! Thank you again, Mark, for your above and beyond excellent service!
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