Mold Removal in Ontario, CA — MoldRx
Vetted Mold Removal Specialists Serving Ontario and the West San Bernardino County
Finding mold in your Ontario home isn't just unpleasant—it's a problem that gets worse every day you wait. With summer temperatures regularly pushing past 100°F and humidity that spikes during monsoon season, Ontario properties face conditions that mold loves. Whether you've spotted visible growth, noticed a musty smell, or have family members with unexplained respiratory issues, you need professionals who understand what Ontario homes are up against.
Why Ontario Properties Need Mold Removal
Ontario sits in the heart of the Inland Empire, where the climate creates a unique set of challenges for homeowners. The city experiences a semi-arid Mediterranean climate with hot, dry summers that can reach the mid-90s to low 100s, and mild winters ranging from the mid-40s to mid-60s. Annual rainfall averages around 15 inches, concentrated between November and March—and when those storms hit, they can overwhelm drainage systems and create moisture intrusion problems that many homeowners don't discover until mold has already taken hold.
What makes Ontario particularly challenging is the age of its housing stock. With roots going back to its 1891 incorporation, the city has homes spanning every construction era. Many properties in established neighborhoods like Central Ontario, Euclid Avenue Historic District, and areas near Ontario Mills were built between the 1940s and 1970s. These older homes often have aging plumbing, original HVAC systems with poor ventilation, and construction materials that weren't designed with modern moisture management in mind.
The combination of 50-80 year old homes and seasonal humidity spikes creates perfect conditions for mold growth. Older HVAC systems struggle to maintain consistent humidity levels. Aging pipes develop pinhole leaks behind walls. And when winter storms arrive, flat roofs and aging weatherproofing can allow moisture to seep in undetected. By the time you see mold or smell that telltale musty odor, the problem has often spread further than you'd expect.
Our Mold Removal Process in Ontario
Every mold removal project starts with understanding exactly what you're dealing with. Here's how we approach mold removal in Ontario homes:
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Assessment and Containment — Before any removal begins, our vetted professionals assess the extent of the mold growth and identify the moisture source causing it. Proper containment using plastic sheeting and negative air pressure prevents mold spores from spreading to unaffected areas of your home during removal.
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Source Correction — Removing mold without fixing the moisture problem is pointless—it'll just come back. Whether it's a leaking pipe, poor ventilation, or water intrusion from outside, the source gets addressed as part of the remediation process.
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Removal and Cleaning — Affected materials are carefully removed following IICRC S520 standards. HEPA filtration captures airborne spores while antimicrobial treatments address remaining contamination on structural materials that can be saved.
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Verification and Prevention — Once removal is complete, clearance testing confirms the mold levels are back to normal. You'll also get guidance on preventing future problems based on your specific home and Ontario's climate challenges.
What to Expect
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Honest Assessment: We'll tell you exactly what you're dealing with—no exaggeration, no unnecessary work. If the problem is smaller than you feared, you'll know. If it's more extensive, we'll explain why and what needs to happen.
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Clear Communication: You'll understand what's happening at every stage. No jargon, no runaround—just straightforward updates on progress and next steps.
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Quality Work: Every job is handled by vetted mold removal specialists who follow industry standards. The goal isn't just removing what's visible—it's solving the problem so it doesn't come back.
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Documentation: You'll receive complete documentation of the work performed, which matters for insurance claims, real estate transactions, and your own peace of mind.
Ontario Areas We Serve
Our vetted mold removal professionals serve all of Ontario, including neighborhoods like Downtown Ontario, Ontario Ranch, Colony, Mountain Village, De Anza Park, Creekside, and the historic areas along Euclid Avenue. We cover ZIP codes 91758, 91761, 91762, 91764, and 91710, as well as properties near Ontario International Airport and the Ontario Mills area.
We also serve neighboring communities including Rancho Cucamonga to the north, Fontana to the east, Chino and Chino Hills to the south, and Upland to the northwest. Whether you're in a historic Craftsman near downtown or a newer build in Ontario Ranch, we understand the specific challenges your property faces.
Related Services in Ontario
In addition to mold removal, we also offer Mold Removal in Ontario, Asbestos Removal in Ontario, Water Damage Restoration in Ontario, Mold Testing in Ontario, and Asbestos Testing in Ontario services to Ontario property owners.
→ Learn more about remediation services in Ontario
Get Mold Removal in Ontario
Let's be honest—finding a remediation company you can actually trust isn't easy. MoldRx exists because too many Ontario homeowners have been burned by companies that overpromise, overcharge, or do shoddy work. We're not trying to be the biggest name in the industry. We're focused on being the most trusted.
Every mold removal job in Ontario is handled by vetted professionals who know what they're doing. You'll get honest guidance about what you actually need—not what makes the biggest sale. If you've discovered mold in your Ontario home, or you're concerned about that musty smell that won't go away, reach out for an assessment. No guesswork. No runaround. Just honest guidance and quality work.