Professional Plumbing Services

When multiple fixtures back up together, the blockage is usually in the main sewer line rather than an individual branch. That is worth addressing quickly — a main line backup can push waste water back into the lowest fixtures in the house.

We aim for same-day service on urgent plumbing problems. If water is actively running where it should not be, shut off the main valve first and then call us — that single step limits the damage more than anything else you can do while you wait.

House-wide low pressure usually points to a failing pressure regulator, mineral buildup in the supply lines, a partially closed main valve, or a hidden leak. If it came on suddenly rather than gradually, a leak moves up the list and is worth investigating quickly.

Find your main shut-off valve before you need it — usually where the supply line enters the house, near the front hose bib, or at the meter box near the street. Turn it clockwise to close. It is worth locating and testing it once so you are not hunting for it with water running across the floor.

Changing a washer or plunging a single slow drain is fair game. Anything involving the water heater, gas lines, the main line, or a leak you cannot see the source of is worth a professional — those are the jobs where a small mistake turns into water damage or a safety problem.

We handle plumbing repairs, drain cleaning, water heater and tankless water heater repair and installation, toilet repair and replacement, sump pump service, and leak detection. We also install water filtration and water softening equipment through our air and water quality team.

We run seasonal promotions on repairs, installations and maintenance throughout the year. Our current offers are listed on our Specials page, and it is worth checking before you book so you are not leaving anything on the table.

Call us, book online, or send a service request through the form on this page. Tell us what the system is doing and roughly how long it has been happening — that helps us send the right technician with the right parts on the truck.

Yes. Our technicians are local, licensed and certified, and they are trained to service all major systems. The same people who live and work in the Inland Empire are the ones showing up at your door.

Magnolia Heating, Cooling & Plumbing has served Riverside homeowners since 1951. That is more than seventy years in the same community, and it is the reason so much of our work comes from repeat customers and referrals from their friends and family.

We serve homeowners throughout Riverside and the Inland Empire, including Riverside County and San Bernardino County. Our service area covers Riverside, Corona, Eastvale, Norco, Mira Loma, Chino, Chino Hills, Moreno Valley, Perris and Rancho Cucamonga. If you are not sure whether your neighborhood is covered, give us a call and we will tell you straight away.