Backflow Prevention in Greater Chicago Area
Need reliable backflow prevention now? Our licensed plumbers test, repair, and install backflow devices to keep your water safe. We serve the Greater Chicago Area, including Chicago, Evanston, and Schaumburg. Family owned since 1997 with a 4.9 rating from 1,240 reviews, we focus on honest advice and no-pressure service. Count on fast scheduling, clear pricing, and work done right. Call or schedule online today.
Why Choose Us
Family owned since 1997
Local, family-run service customers trust.
Proven experience
Over two decades delivering quality plumbing solutions.
Transparent pricing
Upfront estimates with options, no pushy upsells.
Fast emergency response
Same-day and 24/7 availability when you need us.
Value-focused options
Maintenance programs and flexible financing available.
What Our Customers Say
quality
“Their technicians are experienced, courteous, and highly skilled”
professionalism
“What truly sets Oasis Heating & Cooling apart is their dedication to customer satisfaction and long-term reliability”
honesty
“Oasis was the only contract who didn't try to sell me on an immediate replacement”
Chicago
IL
Evanston
IL
Schaumburg
IL
Oak Park
IL
Arlington Heights
IL
Des Plaines
IL
Downers Grove
IL
Glenview
IL
Melrose Park
IL
Palatine
IL
Skokie
IL
Wheaton
IL
Addison
IL
Alsip
IL
Bellwood
IL
Bensenville
IL
Berkeley
IL
Berwyn
IL
Bloomingdale
IL
Blue Island
IL
Bridgeview
IL
Broadview
IL
Brookfield
IL
Buffalo Grove
IL
Burbank
IL
Carol Stream
IL
Chicago Ridge
IL
Cicero
IL
Clarendon Hills
IL
Crestwood
IL
Darien
IL
Deerfield
IL
Elk Grove Village
IL
Elmhurst
IL
Elmwood Park
IL
Evergreen Park
IL
Forest Park
IL
Franklin Park
IL
Glen Ellyn
IL
Glencoe
IL
Glendale Heights
IL
Golf
IL
Great Lakes
IL
Hanover Park
IL
Harwood Heights
IL
Hickory Hills
IL
Highland Park
IL
Highwood
IL
Hillside
IL
Hines
IL
Hinsdale
IL
Hoffman Estates
IL
Hometown
IL
Itasca
IL
Justice
IL
Kenilworth
IL
La Grange
IL
La Grange Park
IL
Lake Bluff
IL
Lake Forest
IL
Lake Zurich
IL
Lincolnshire
IL
Lincolnwood
IL
Lisle
IL
Lombard
IL
Lyons
IL
Maywood
IL
Medinah
IL
Midlothian
IL
Morton Grove
IL
Mount Prospect
IL
Niles
IL
Northbrook
IL
Oak Brook
IL
Oak Lawn
IL
Palos Heights
IL
Palos Hills
IL
Palos Park
IL
Park Ridge
IL
Posen
IL
Prospect Heights
IL
River Forest
IL
River Grove
IL
Riverdale
IL
Riverside
IL
Robbins
IL
Rolling Meadows
IL
Roselle
IL
Schiller Park
IL
Stone Park
IL
Summit Argo
IL
Vernon Hills
IL
Villa Park
IL
Westchester
IL
Western Springs
IL
Westmont
IL
Wheeling
IL
Willow Springs
IL
Willowbrook
IL
Wilmette
IL
Winnetka
IL
Wood Dale
IL
Worth
IL
Whiting
IN