4.9/5 — 2,000+ Five-Star Reviews
Drain Cleaning & Unclogging
Bay Area's #1 Choice
High-torque mechanical cabling designed to restore pipe diameter by clearing stubborn obstructions and accumulated debris. We focus on comprehensive removal of blockages to ensure consistent drainage and prevent the immediate return of backup issues.
- 25+ Years
- Licensed & Insured
- 24/7 Emergency
- No hidden costs
- Same-day service
- Fully licensed and insured
- 6000+ completed jobs
4.9/5 Rating
2,000+ Reviews
Licensed & Insured
CA Licensed
Same-Day Service
24/7 Emergency
25+ Years
Bay Area Experts
6,000+
Jobs Completed
Simple Process
How It Works
Call Us 24/7
Reach us anytime at
(408)539-6936.
Same-Day Dispatch
A licensed technician arrives at your home, often same day.
Diagnose & Fix
Upfront pricing before work begins. No hidden fees, ever.
100% Satisfaction
We stand behind every job with our satisfaction guarantee.
Professional Drain Cleaning & Unclogging Services
The Importance of Expert Sewer and Drain Cleaning
Sewer drain cleaning is a crucial maintenance task that should only be handled by professional plumbers. Our skilled technicians at United Plumbing & Water Heaters use state-of-the-art sewer drain cleaning machines and techniques to clear blockages and maintain flow, preventing potential backups and damage to your property.
Identifying the Need for Sewer and Drain Cleaning Services
Key indicators that your San Jose property requires sewer and drain cleaning include:
- Slow draining sinks or bathtubs.
- Frequent sewage backups.
- Unpleasant odors emanating from drains.
- Gurgling sounds from plumbing fixtures.
Experiencing these issues signals the need for immediate sewer drain cleaning services to prevent further complications.
100% Satisfaction Guarantee
If you're not completely satisfied with our work, we'll come back and make it right — free of charge. That's our promise to every customer.
Signs You Need Drain Cleaning & Unclogging
- Slow drainage and persistent standing water
- Gurgling sounds in secondary drain lines
- Foul odors originating from kitchen or floor drains
- Recurring backups after mechanical plunging
- Visible sewage or wastewater surfacing
- Localized fruit fly or drain fly infestations
Why Choose United HVAC
- 25 years of experience
- Same-day service
- 1+ year warranty
- 6000+ completed jobs
- 0% interest financing and discounts
- Fully licensed and insured
- Well reviewed and highly trusted
- No hidden costs
- We work 365 days a year
Got Questions?
Frequently Asked Questions
Chemical drain cleaners often sit on top of a clog, generating heat that can damage PVC pipes or soften older metal ones without removing the obstruction. Slow drains are usually caused by a buildup of hair, grease, or mineral scale that narrows the pipe's diameter.
A plumbing snake (or auger) uses a metal cable to punch through a solid obstruction like a wad of paper or a hair clog. Hydro-jetting uses high-pressure water (up to 4,000 PSI) to scrub the internal walls of the pipe. While a snake is great for immediate relief, hydro-jetting is the only way to remove grease buildup and tree roots, restoring the pipe to nearly its original "like-new" flow capacity.
Gurgling is a sign of a "venting" or "main line" issue. When water can’t flow freely down the drain, it pushes air back up through the system, creating bubbles in your toilet. This often indicates a partial blockage in the main sewer line or a bird's nest/debris clogging your roof vent stack. If left unaddressed, this will eventually lead to a full sewage backup.
Most standard secondary drains (sinks, tubs, showers) can be cleared within 1 to 2 hours. Main sewer line cleaning may take 2 to 4 hours, especially if we need to perform a camera inspection to identify root intrusions or structural damage after the line is cleared.
Despite the marketing on the package, most "flushable" wipes do not break down like toilet paper. They often snag on small imperfections or tree roots in your pipes, creating a "ragging" effect that catches grease and other debris. This is one of the leading causes of residential sewer backups and expensive main line repairs.
Yes. Tree roots are naturally drawn to the moisture and nutrients inside your sewer pipes. They can enter through microscopic cracks or loose joints in clay and cast-iron pipes. Once inside, they grow rapidly, creating a dense "root ball" that traps waste and eventually causes a total collapse of the line if not professionally cleared.
This odor is usually caused by a buildup of "biofilm" or decaying food particles trapped in the P-trap or the garbage disposal. If the smell persists after cleaning the disposal, there may be a buildup of grease further down the line that is catching organic matter. We use enzymatic cleaners that eat away this organic buildup without damaging your plumbing.
If the lowest drains in your house (like a basement shower or floor drain) are overflowing when you run water elsewhere, your main sewer line is clogged. You should stop using all water immediately and call for professional service to prevent sewage from backing up into your living spaces.
Regular maintenance is key. Use mesh strainers to catch hair in showers, never pour fats or oils down the kitchen sink, and perform a professional "maintenance flush" every 1–2 years. For homes with significant tree coverage, annual hydro-jetting can keep root growth in check before it becomes a structural problem.
Yes. A backed-up drain or an overflowing toilet is a health hazard and a threat to your flooring and subfloor. We provide 24/7 emergency response to clear the blockage, sanitize the affected area, and ensure your drainage system is flowing safely and efficiently.
Related Services
Other Drain & Sewer Services
Sewer Line Repair & Replacement
Trenchless and traditional sewer line repair and replacement solutions.
Drain Cleaning & Unclogging
Professional drain cleaning and unclogging using hydro jetting and cable equipment...
Camera Inspection for Sewer Line
HD sewer camera inspections to locate blockages, cracks, and damage...
Cleanout Installation
Sewer cleanout installation for easy access to your sewer line for maintenance...
Explore Our Other Services
Heating & Air Conditioning
10 services available
Plumbing Services
9 services available
Drain & Sewer
4 services available
Water Line / Repiping
4 services available
Water Heating & Filtration
4 services available
Electrical Services
6 services available
Posted on Google Omied LeleTrustindex verifies that the original source of the review is Google. Pasha (technician) was very helpful. We had a clogged drain and were unable to clear it ourselves. He arrived and fixed the drain and was very clean and polite. Left everything as it was before he arrived. Highly recommend.Posted on Google Liang KatherineTrustindex verifies that the original source of the review is Google. Fantastic service! We really enjoyed working with United plumbingPosted on Google Natalia ShreveTrustindex verifies that the original source of the review is Google. Pasha was very professional he gave us a couple of options and finished the plumbing job very quicklyPosted on Google Just JaniceTrustindex verifies that the original source of the review is Google. As a busy homeowner I truly appreciate their ability to work around my schedule and needs. My garbage disposal recently died, and Neo was professional and offered my different options. He had the parts I needed and was able to complete the job quickly and cleanly.Posted on Google Chaozhong LianTrustindex verifies that the original source of the review is Google. I wholeheartedly recommend United HVAC, Plumbing & Electrical. I recently hired them to replace the original 1961 HVAC ductwork in my house, and they did a wonderful, extremely professional job. I am beyond satisfied with the results. You don't just have to take my word for it--I actually took pictures of their completed work, uploaded them to Google Gemini, and asked the AI to evaluate the installation. Even the AI praised their work, calling it a "top-tier, textbook installation"! (See the screenshots below). During the bidding process, I compared United with another company. United's quote was slightly higher, but choosing them was absolutely the best decision. Their program manager, Tim, was incredibly easy to work with. He quickly identified asbestos tape on my 1961 ducts and insisted we use a C-22 licensed abatement company to remove it safely and provide all the legal documentation for future reference. The other company offered a cheaper route by doing the removal themselves, but for something as dangerous as asbestos, doing it by the book is well worth the minor price difference. I also want to give a massive shoutout to Bair (Bayar) for his exceptional craftsmanship. He is easy-going, friendly, and really listened to all of my concerns. He provided great recommendations on how the new ductwork should be organized, and actually used a machine to fine-tune and balance the air pressure throughout the house. To top it all off, he even carefully reorganized the insulation in my attic after the work was done! It's this kind of attention to detail that makes them stand out. The pictures speak for themselves. If you want true professionals who care about safety, honesty, and quality craftsmanship, go with United HVAC.Posted on Google Chaozhong LianTrustindex verifies that the original source of the review is Google. I highly recommend United HVAC, Plumbing & Electrical! From start to finish, the entire process was incredibly smooth. They handled all the permits and inspections throughout the project, which gave us complete peace of mind. Every single technician we interacted with was friendly, approachable, and truly easy to work with. I specifically want to give a massive shoutout to Max (Aiusha) and Rinat for their wonderful work. Max is super professional and highly skilled. He installed my water heater and water softener with absolute "military precision." I'm the kind of guy who has a lot of weird, specific ideas about how pipes should be routed and extra gadgets I want installed to monitor the system, and Max handled all my requests with total ease. I am also super paranoid about plumbers plowing through studs or structural beams in my 1961 house, but Max was extremely careful and treated my home's structure with the utmost respect. Rinat is also a fantastic plumber. He installed a PRV, a Moen Flo auto-shutoff valve, an RO system, and even replaced some of the old sewage pipes in my house. He really listened to all of my requests and finished the job quickly and professionally. I highly recommend him! Because of their wonderful service, I’ve officially signed up for their company's membership. I am currently working with them to redo my HVAC ductwork, and I will definitely leave another review for that project once it's done. I'm sure they will do a wonderful job there, too!Posted on Google Ritesh BediaTrustindex verifies that the original source of the review is Google. Great service. Loved the professionalism and the way fixed my plumbing problem. I would call them again.Posted on Google Ginger PerngTrustindex verifies that the original source of the review is Google. We had to replace the wax ring on our toilet. Scheduling was easy; pricing was fair (much cheaper than the other quote we got!) Our technician, Melvin, was polite and expedient. This is our second time using United and highly recommend for gas and plumbing services.Posted on Google Joseph MartinTrustindex verifies that the original source of the review is Google. Melvin was great. Fast and efficient.
Drain Cleaning
Single-family homes only. Not valid for apartments or multi-unit properties.
AC & Heat Pump Pre-Season Maintenance
Gas to Electric Water Heater Conversion
AC & Heat Pump Pre-Season Maintenance
Drain Cleaning
Single-family homes only.
Not valid for apartments or multi-unit properties.
Convert Your Gas Water Heater to an Electric Hybrid Heat Pump by the End of 2026
Serving the Bay Area
Drain Cleaning & Unclogging Available In
We proudly serve homeowners across the entire Bay Area
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