License #1115426
Water, Gas, we fix it fast
24 Hour Emergency Services
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Retail & Office Plumbing Services Fontana, Corona & Upland CA

Keep businesses running with fast commercial plumbing service
Fix Business Plumbing Now

Commercial Plumbing That Minimizes Business Disruption

Customer restroom out of order? Break room sink backing up? Water heater failed in your medical office? Plumbing problems disrupt business and drive away customers. We provide retail and office plumbing Fontana CA businesses need to stay operational and professional. Our commercial techs work quickly and cleanly because we understand every hour of downtime costs money.

Retail stores and office buildings have unique plumbing needs. High traffic restrooms require durable fixtures and frequent maintenance. Break rooms need reliable hot water and proper drainage. Tenant improvements demand code compliant installations. We handle retail and office plumbing Rancho Cucamonga CA properties trust, serving shopping centers, medical offices, professional buildings, and storefronts across Upland, Corona, Redlands, Glendora, Orange County, Pasadena, and Monrovia. C36 License #1115426 certified for all commercial work.

We respond fast because businesses can't wait. That overflowing toilet creates liability issues. Lack of hot water violates employee regulations. Persistent sewer smells drive customers away. Our trucks stock commercial grade parts to complete most repairs immediately. We work with property managers to coordinate multi tenant repairs and schedule service during off hours when possible. From simple faucet replacements to complete restroom renovations, we minimize disruption to your operations.

Common issues include running toilets wasting hundreds monthly, corroded shut off valves that won't close, and aging water heaters failing without warning. We also handle tenant improvements, ADA compliance upgrades, and water conservation retrofits. Retail and office plumbing Corona CA managers request includes preventive maintenance programs that catch problems early. Regular inspections cost far less than emergency repairs and unhappy tenants. Whether you manage one store or multiple properties, we keep your plumbing invisible to customers and employees. Call today for priority commercial service that respects your business needs.

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Affordable Pricing

Our services come at competitive prices without compromising quality.

Customer Satisfaction

Our top priority is customer satisfaction, ensuring every client is happy with our work.

Expert Plumbing Services

AS Plumbing offers expert plumbing services with a team of certified professionals.

Quality Assurance

We guarantee quality workmanship and use high-grade materials for all projects.

Current AS Plumbing Promotions

Expert Gas Leak Detection Special: $250

Protect your home and family with professional gas leak detection from AS Plumbing. Even a small gas leak can be a serious hazard. Our licensed technicians use advanced tools and proven methods, including a system-wide pressure test, to accurately find leaks in your gas lines and appliances. Take advantage of our $250 Gas Leak Detection Special. This service includes a thorough inspection of your gas system by a qualified professional and a detailed, upfront estimate for any required repairs. Don't guess when it comes to gas—get the peace of mind that comes from a professional diagnosis. Call today to schedule your safety inspection.
Protect your home and family with professional gas leak detection from AS Plumbing. Even a small gas leak can be a serious hazard. Our licensed technicians use advanced tools and proven methods, including a system-wide pressure test, to accurately find leaks in your gas lines and appliances. Take advantage of our $250 Gas Leak Detection Special. This service includes a thorough inspection of your gas system by a qualified professional and a detailed, upfront estimate for any required repairs. Don't guess when it comes to gas—get the peace of mind that comes from a professional diagnosis. Call today to schedule your safety inspection.

Enjoy Pure, Soft Water From Every Tap & Save $750!

Hard water doesn't just leave spots—it damages your plumbing and shortens the life of your expensive appliances. A whole-home water filtration and softener system is one of the smartest investments you can make to protect your home from costly scale buildup and corrosion. AS Plumbing can install a state-of-the-art system that provides clean, soft water to your entire home. For a limited time, we're making this essential upgrade more affordable than ever with a $750 discount on a complete installation. Protect your pipes, your appliances, and your peace of mind. Contact us today for a free, no-obligation estimate!
This offer provides a $750 discount on a new, complete whole-home water filtration and/or softener system installation by AS Plumbing. A standard installation is assumed; any necessary rerouting of plumbing may be an additional charge. The discount does not apply to repairs or service on existing units. This offer cannot be combined with any other discounts and is valid for a limited time.

Major Sewer Problem? Major Savings! Get $1500 OFF Sewer Line Replacement.

Worried about your sewer line but dread the thought of a torn-up yard? AS Plumbing has the solution. We specialize in modern Trenchless Sewer Repair, a minimally invasive method to replace your main sewer line without the extensive digging, saving your driveway, landscaping, and gardens. This advanced technology provides a brand-new, seamless pipe that is stronger and more durable than the old one. For a limited time, get the best technology and the best price with $1500 OFF your full trenchless or traditional sewer line replacement.
Receive a $1500 discount on a complete sewer line replacement project. Offer is valid for both traditional and trenchless installation methods. The discount is not applicable to sectional repairs, pipe lining, or any service other than a full replacement of the main sewer line. Cannot be combined with any other discounts. Contact us to schedule an evaluation. Offer valid for a limited time.

Get $100 OFF Professional Faucet Installation

Whether you have a leaky faucet that needs replacing or you've already purchased a new one, our professional installation service is the perfect solution. An expert from AS Plumbing will ensure your new kitchen or bathroom faucet is installed correctly and functions perfectly without leaks.
This offer provides a $100 discount on the labor for a single kitchen or bathroom faucet installation. The cost of the new fixture is not included. Additional charges may apply if existing plumbing, valves, or lines require repair or replacement. This special is limited to one per customer and cannot be combined with other offers.

Upgrade Your Kitchen & Save! 25% Off Garbage Disposal Installs

Whether you're replacing a broken garbage disposal or installing a new one for the first time, let our experts handle it. AS Plumbing provides fast, clean, and reliable garbage disposal installations to make your kitchen cleanup easier. For a limited time, take 25% OFF our complete installation service. We'll ensure your new unit is installed perfectly, with secure connections for years of trouble-free use.
Offer is for a 25% discount on the installation service/labor cost. The price of the garbage disposal unit itself is separate. Offer applies to standard installations where suitable plumbing and electrical connections are present. Any necessary modifications will be quoted separately. Cannot be combined with other promotions. Valid during standard business hours.

Protect Your Home & Save $1500 on a Full Repipe!

Invest in the long-term value and reliability of your home with a complete plumbing system replacement. A full repipe from AS Plumbing not only solves issues like poor water pressure and discoloration but also significantly increases your property's value and prevents future emergencies. Our team specializes in efficient, minimally invasive repiping projects. And right now, this essential home improvement is more affordable than ever. We're offering a massive $1500 discount on all full home repipe projects.
Receive a $1500 discount on a complete repipe of your home's hot and cold water supply lines. A minimum project scope is required to qualify as a "full home repipe." Discount is not applicable to drain line replacement, partial repairs, or reroutes. This offer is for a limited time and cannot be combined with other discounts. Call for a free, detailed estimate.

Hidden Leak? Find It Fast for Just $49.99!

Don't let a small leak turn into a huge problem. Hidden water leaks can cause serious structural damage, mold growth, and wasted money on your water bill. For just $49.99, the expert technicians at AS Plumbing will come to your home, use their expertise to pinpoint the exact source of the leak, and provide you with a clear, upfront quote for the repair.
The $49.99 is a diagnostic fee for our leak detection service and does not include the cost of any repairs. Once the leak is located, you will receive a separate, upfront quote for the required repair work. This offer is valid for one leak issue per household during standard business hours. Cannot be combined with other promotions.

New Toilet Installed From Just $209

Need a new toilet? AS Plumbing offers professional installation starting at just $209. We provide fast, reliable service to get your new toilet set up perfectly. We also offer a full range of toilet repair services. Call today to schedule your appointment!
Offer is for installation labor of a standard toilet starting at $209. Price does not include the toilet. Additional charges may apply for flange, valve, or plumbing repairs. Haul-away of old unit is extra. Call for complete details and a firm quote.

Limited Time: Get $799 Off a New Tankless Water Heater!

Never run out of hot water again! Make the switch to a modern, energy-efficient tankless water heater. You'll save space, lower your utility bills, and enjoy hot water on demand. For a limited time, AS Plumbing is making the upgrade even easier with a $799 discount on your new installation.
Offer valid for a limited time. Discount of $799 is applied to the final invoice for a complete tankless water heater installation. A standard installation is assumed; any required modifications to plumbing, gas, electrical, or venting are extra. Customer is responsible for the cost of the city/county permit fee. Cannot be combined with other offers.

Unclog Your Drain for Just $69!

Tired of slow drains or stubborn clogs? Get your pipes flowing freely again with the AS Plumbing Drain Cleaning Special. For just $69, our expert technicians will cable one clogged residential drain line, quickly and efficiently restoring proper flow to your sink, tub, or shower.
$69 special offer is valid for one Residentia/Commercial drain line (e.g., kitchen sink, bathroom sink, tub, shower) with a ground-level, accessible cleanout. Offer does not apply to main sewer lines, drains requiring roof access, or blockages requiring hydro-jetting or toilet removal. Cannot be combined with other offers. Service must be performed during standard business hours.

Most Frequently Asked Questions

Do you work with property management companies?
Yes, we partner with property management companies throughout Fontana and Upland to maintain retail centers, office buildings, and mixed use properties. We provide 24/7 emergency response, scheduled maintenance programs, and detailed invoicing for tenant chargebacks. Our techs coordinate with on site managers and work around business hours. We handle everything from individual tenant calls to building wide repipes. Many management companies use us exclusively for consistent service across their portfolios.
How quickly can you respond to commercial plumbing emergencies?
We prioritize commercial emergencies with typical response times of 1 to 2 hours in Rancho Cucamonga and Corona business districts. Overflowing toilets, water leaks, and complete restroom failures get immediate attention since they halt operations. Our dispatchers understand business impacts and send the nearest available tech. We stock commercial parts allowing most repairs on first visit. For property managers with multiple locations, we offer priority service agreements guaranteeing even faster response times during business hours.
What about ADA compliant plumbing upgrades?
We install ADA compliant fixtures throughout Corona and Rancho Cucamonga commercial properties. This includes proper height toilets, accessible sinks with knee clearance, lever handle faucets, insulated pipes to prevent burns, and grab bar backing. California regulations require specific fixture counts based on occupancy. We ensure your restrooms meet current codes during renovations or tenant improvements. ADA upgrades often qualify for tax credits while avoiding costly discrimination lawsuits. We handle permits and inspections for complete compliance.
What plumbing issues commonly affect retail and office spaces?
Common problems in Fontana retail and office buildings include constantly running toilets wasting water, clogged restroom drains from paper products, failed flush valves on commercial toilets, leaking faucets annoying customers, and water heaters failing without warning. Break room sinks back up from coffee grounds and food waste. Older buildings suffer from corroded pipes reducing water pressure. These issues disrupt business, create poor impressions on customers, and waste money on utility bills. Regular maintenance prevents most common failures.
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