At jjplumbing heat and air we pride ourselves on providing quality work and fair prices over 35yrs of experience always prompt and on time
Overview
Hired 176 times
Background checked
License verified
21 years in business
Business hours
This pro hasn't listed their business hours.
Payment methods
This pro accepts payments via Cash, Check, Credit card, PayPal, Venmo, and Zelle.
Top Pro status
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2021
Credentials
License verified
C20 – Warm-Air Heating, Ventilating And Air-Conditioning Contractor
License state: CA
Background checked
Passed by John B Plaziak on Nov 5, 2020.
Services offered
Duct and Vent Services Needed
Install ducts and vents
Remove existing ducts and vents
Replace existing ducts or vents
Duct and vent type
Heating
Dryer
Exhaust
Duct material
Rigid sheet metal
Flexible non-metallic material
Fiberglass
Projects and media
Projects and media
Reviews
Customers rated this pro highly for responsiveness, professionalism, and work quality.
Excellent 4.9
92 reviews
5
98%
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Read reviews that mention:
LeeAnn L.
Feb 18, 2026
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Hired on Thumbtack
John was very professional and knows his stuff. I decided to replace our 40 year old furnace after discussing the alternatives Our problem ended partly with an exhaust pipe on our roof. He went way beyond what we both expected to find and fix the problem and install a new furnace at no additional cost to us. I would highly recommend JJ Plumbing for any of your plumbing needs.
Details: Repair • Heat pump • House • Owner
Thermostat Installation or Repair
Steven B.
Jun 27, 2026
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Hired on Thumbtack
Was able to troubleshoot my issue over the phone. Very knowledgeable and a great guy to work with!
Thermostat Installation or Repair
David R.
Jan 18, 2025
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Hired on Thumbtack
John did the job I asked and did exactly as we agreed. That’s a simple summary and probably enough to know. I mean, that’s what we all crave, yes?
Of course, it’s not always simple to get an “as agreed” result. Naturally there are important details, and these make John’s execution stand out.
Our job: Remove the old, install the new… Replace two ancient AC units and two ancient gas furnaces with new…Two outdoor heat-pumps, two furnaces in the attic to replace existing, thermostats, fittings, drainage, pans, surge protectors, and so forth, using existing ducting and coolant lines, thus allowing future use of either fuel (NG or electricity) as power prices, our opinions, our solar panels, regulation or the world around us require in the future.
RESPONSE: Initially, not only did John call right away, but he spent considerable phone time that evening walking through the topics I raised. While I think this is part of landing the work, you can hear through the phone when a tradesperson has low tolerance for a homeowner coming up the education curve. Or, when you reach an appointment setter, that is the limit of what they can give you…an appointment for a tech to visit you. In contrast, John was engaged and generous with his time, providing meaningful responses so I could decide he was a pro I wanted to visit and assess the job.
DIFFERENT than the big guys: Large HVAC/plumbing companies in San Diego have become out-of-hand with their business models and exorbitant pricing. This includes virtually no information without a service visit / estimate, and this takes your time, not to mention giving them a platform on your turf to “win” while you lose. We all make choices and, for me, the right choice is that I’m simply not going to participate. This means that many of my requests of John were to avoid the practices of the big-guys. Do I sound pessimistic? Yup, I begin very guarded.
EXPERTISE: John is a long-experienced expert and craftsman, so he’s able to move you past common errors and your install will be done correctly. He’ll be transparent about what’s needed and not needed. He was willing to discuss various install choices and I spent weeks analyzing equipment choices with an occasional ping to him for guidance.
CLEAN/OCD: John listened to my demands around a clean install based in a need for orderly, attractive, OCD-level visuals that are the result of a well conceived and executed installation. He understood and delivered, even in the attic where liberties are sometimes taken but order is important. This differentiates John from all those who don’t want your input or don’t hear it, since they are more efficient when you stay out of the details. Understandable, but not for me.
COMMUNICATION: John is a straightforward communicator. I don’t want a glossy yes-man when digging into important install details but, rather, a transparent and even blunt partner. My idea is misguided or would result in a poor outcome? I want to be told exactly that, as bluntly as possible. John is authentically himself. He isn’t “smooth” or “slick” or a silver-tongued snake but, rather, he’s straightforward the way I need and value in someone working at my home.
PRICING and VALUE: This kind of work and equipment is expensive. John engaged on my pricing topics and we found the best solutions from my perspective that allow him to be happy with the job as well. For me, costs still matter and I do want a chance to discuss the finances respectfully with pros I hire, largely to evaluate the best path to a win-win, respecting their work and need to earn a good living while not wasting my hard-earned dough. There’s an education process and good pros are willing to provide this, while pricing mystery tends to accompany gouging. My job was costly, but John definitely saved me over the big guys and was a far, far better value. I’ll repeat that key element - The result John provided was not cheap but was excellent value.
RECOMMENDING JOHN: John and I have discussed other work ranging from a hose bib to a full replumb, and I recommend giving John a strong look. Whether or not your approach is like my own, you’ll certainly get a knowledgeable pro who does what he says he’ll do.
Details: Repair • Attic • Ground floor • House
Central Air Conditioning Repair or Maintenance
Thomas Q.
May 19, 2025
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Hired on Thumbtack
John was prompt, professional, and honest. His advice helped us avoid some costly “upgrades” we were originally advised to get. Highly recommended and will call again for any future HVAC needs.
Details: Repair • Outside • Outside • House
Central Air Conditioning Repair or Maintenance
Antonio D.
Jul 15, 2025
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Hired on Thumbtack
John did a great job with our AC. We needed to temporarily store it in our garage due to some yard work. He came on time both times to detach the unit and reattach it when needed.
Details: Routine maintenance • Outside • Ground floor • House
Central Air Conditioning Repair or Maintenance
FAQs
What should the customer know about your pricing (e.g., discounts, fees)?
my company is small my overhead is low , my prices are very competitive
What is your typical process for working with a new customer?
typically we talk on the phone first , discuss what needs to be done , sometimes I can ball park a price , if there is a sevice call that would roll into the cost of repair if they have me do the job. once a time is set i come out , check out the project and give a price for repair or replacement, depending on the job the work is done then or scheduled for another time
What education and/or training do you have that relates to your work?
high school , trade school, endless supply house classes and 35 years on the job
