Licensed HVAC and plumbing professional with over 14 years of experience
JD Air Conditioning and Plumbing is a family-owned company proudly serving the greater Los Angeles area for over 14 years. We specialize in air conditioning, plumbing, tankless water heater and mini-split systems, water filtration solutions, and professional installation of Flo Smart Water Monitor and Shutoff technology. Our mission is simple: deliver high-quality work at fair prices while building long-term relationships with homeowners who value reliability and craftsmanship. With every job, we bring years of experience, honest service, and a commitment to doing things right the first time - so our customers never have to worry twice.
●..High-quality work
●..Honest pricing
●..Dependable service
●..Professional
Trusted for over 14+ years
Your comfort and peace of mind are my top priorities.
Your Local Experts for Heating, Cooling & Plumbing Repairs
JD Air Conditioning and Plumbing Services provides A/C services, water filtration systems, tankless water heater and mini-split services, Flo Smart Water Monitor and Shutoff installations, and plumbing services to the Downey, CA area.
HVAC Services
●...System repairs
●...Installations & replacements
●...Regular maintenance
Plumbing Services
●...Leak detection & repairs
●...Water heater service & installation
●...Drain cleaning & pipe maintenance
We’re proud to provide prompt, professional service tailored to your home’s needs.
Fully Licensed & Insured
JD Air Conditioning and Plumbing is fully licensed in California, delivering HVAC and plumbing work that meets every legal, safety, and industry standard so homeowners never have to worry.
What Our Clients Say
5 Star Reviews
"Very professional, friendly, on time"
Joe installed my water filtration system, shower handles & shower drain plumbing. He is very professional, friendly, on time, and provides quality work! He even went the extra mile to run to the grab parts that were needed for the filtration system and checked in with me days later to make sure that we were happy with the installations. I highly recommend working with Joe for all you plumbing/water installation needs.
— Hether G.
"Joe did an excellent job! I would recommend"
I needed my home main water line shut off valve replaced and bathroom faucet valves replaced too. Called Joe up and was able to come and quote me a great price and do the work the same day. Joe did an excellent job! I would recommend him for your plumbing issues. Will definitely be giving Joe a call for any future work.
— Hether G.
"I highly recommend Joe Diaz"
Joe was doing work at the business next door to my business, and I told him I had a problem with my toilet. He took a look at it, went to the hardware store to get what was needed to fix the problem, and completed the work the same day. When he was done I asked if he could come to my house and replace a sprinkler valve. He came the next day and replaced two sprinkler valves. He also tested my entire sprinkler system, and replaced malfunctioning sprinker heads. I highly recommend Joe Diaz from JD Air Conditioning & Plumbing.
— Larry B.
How It Works
We provide professional HVAC and plumbing services built on honesty, efficiency, and expertise. Whether you need a quick repair, full installation, or regular maintenance, our process keeps things simple and stress-free.
Get Your Free Quote
Tell us what you need and we’ll assess your system and provide an estimate with no hidden costs.
Schedule Your Service
Pick a time that works best for you. Our licensed technician will arrive on time, ready to handle the job.
Relax and Enjoy Your Comfort
Sit back knowing your heating, cooling, or plumbing system is running smootly, and that we’re always here if you need support.
