Custom Chemistry for Industrial Cleaning, Water Treatment, Wood Products, and Energy Operations.
Chemistry that keeps critical systems running. Since 1960.
Custom Chemistry for Industrial Cleaning, Water Treatment, Wood Products, and Energy Operations.
Chemistry that keeps critical systems running. Since 1960.
Custom Chemistry for Industrial Cleaning, Water Treatment, Wood Products, and Energy Operations.
Chemistry that keeps critical systems running. Since 1960.
How Can You Trust Your Chemistry if You Can't Trust the Partner Who Supplies It?
Chemistry Done Better.
For a Better Future.
With Guardian Chemicals, you have someone you can count on. Our commitment to long-term improvement results in relationships that last decades and work across companies, processes, sites and projects. We strive to be your specialty chemical partner – a partner you can depend on to keep you competitive in a changing industry.
There’s No Room for Error—
And Always Room for Improvement
Our reps are industry-experts who take the time to understand your challenges and your systems, which informs their recommendations. And it’s their on-the-ground insight that steers our innovation. Because our chemistry is powered by passion and tempered only by devotion to meticulous detail—qualities we demand of everyone at Guardian Chemicals.
That obsession is why we’ve become a benchmark for chemical innovation in North America.

We look to clients like you for insight on how we can solve the biggest issues facing your industry. We continually invest in Research & Development, extensively test the chemicals we produce, and always look for better application processes.

We have become industry leaders by developing responsible chemistry for over 60 years. We create numerous products that are certified to Green Seal standards and as a company are certified to ISO 14001.

We understand that time is money. Our knowledgeable team show up onsite informed and ready to advise. We deliver your chemicals, service your equipment, and aren’t afraid to get our hands dirty to solve the problem.
Guardian Chemicals:
The Benchmark for Chemical Innovation in North America
With over 220 products for multiple applications, Guardian Chemicals is recognized as one of the leading specialty chemical suppliers in Canada and the USA. We create, develop, custom formulate, and manufacture industry-specific chemical solutions to clean, protect and optimize commercial, industrial and water treatment processes and systems.
Here's What Our Customers are Saying:
Posted on Google![]()
Michael Buchel152 days agoTrustindex verifies that the original source of the review is Google.
From customer support to having the knowledge, the people at Guardian Chemicals are amazing! A special thanks to Ian, Daniel, and Diane for all your support, work, and patience with setting up my new car wash!! Huge tank you. - Michael Buchel Mural Car WashPosted on Google![]()
Dave812 days agoTrustindex verifies that the original source of the review is Google.
This product is really the best I have seen, they have solution for all your cleaning needs.Posted on Google![]()
Sid Fontoura816 days agoTrustindex verifies that the original source of the review is Google.
Guardian Chemicals is a trusted vendor. Responsive, helpful and providing great customer support, they are an important part of our team. Their products work as-advertised and are competitively priced. Our sales representative, Angela Laureano, is great. She is what every technical sales rep should be and I use her to show our up and coming university graduates another possible career avenue for them. Greg Pecharsky has been instrumental in helping our US facility overcome some chemical-related technical challenges, including teaching our new staff how to safely use Guardian Chemicals' products. Our business succeeds because of Guardian Chemicals and their people like Angela Laureano and Greg Pecharsky.Posted on Google![]()
Andrew Webley837 days agoTrustindex verifies that the original source of the review is Google.
Guardian Chemicals are the best. I’ve been using them for the past 8 years, no complaints. I take them wherever I go, if they arent onsite already. They’ll support any request you have as well as recommend what’s best for your building or plant. Worth changing your present water treatment company to Guardian. Namely Deidre and Adrian.Posted on Google![]()
Steven Luong840 days agoTrustindex verifies that the original source of the review is Google.
We recently had the pleasure of working with Guardian Chemicals and were thoroughly impressed by their expertise and professionalism. When we reached out to Deidre Stewart, the water treatment specialist, she promptly arrived at our building and shared her invaluable knowledge on maintaining our property's water and boiler system. Deidre's upbeat personality and extensive expertise made the entire process not only informative but also enjoyable. She guided us through the necessary procedures with clarity, ensuring we understood each step without feeling overwhelmed by the details. We are truly appreciative of the support and insight provided by Deidre and the team at Guardian Chemicals. We look forward to continuing our partnership with them and benefiting from their exceptional service.Posted on Google![]()
Ed Heather861 days agoTrustindex verifies that the original source of the review is Google.
Great company to deal with and Brad always goes above and beyond. Very knowledgeable. Thx again for the help. 👍🏻Posted on Google![]()
Raffy Binder862 days agoTrustindex verifies that the original source of the review is Google.
I’ve had the pleasure of getting to know Brad from Guardian chemicals. He is an outstanding person, great personality and always willing to guide anyone into a right direction. He is willing to teach you and share his knowledge with you about anything he can. Thank you Brad! You’re one of a kind!Posted on Google![]()
Fotoula Marshall862 days agoTrustindex verifies that the original source of the review is Google.
It was an absolute pleasure dealing with Brad from Guardian Chemicals. Called about needing some chemical, and he was here within a half an hour. He had me set up and ready to go within minutes. Knowledgeable, friendly, and the professionalism was over the top. Highly recommended! Thank you for your help Brad.Posted on Google![]()
Eric Ranger867 days agoTrustindex verifies that the original source of the review is Google.
Angela has always gone above and beyond to insure all my customers needs are met, from taking late phone calls to meeting onsite to help come up with solution's.Posted on Google![]()
seyed hosseyn hosseyni986 days agoTrustindex verifies that the original source of the review is Google.
I have been using Guardian Chemicals products in buildings since early 2019, thanks to Deidre and Adrian for their support over the past five years, looking after water treatment in hot and cold water systems, great job!Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
We don’t believe in ‘deliver-and-done’. True benefits revolve around the consistency of program execution, which is why we’re there when you need us both for regular servicing and emergency support—for life.

Our experts know your industry and will seek to understand the unique challenges of your business. Let’s talk.

Your systems and processes are interconnected. We’ll arrange a site visit to understand the bigger picture.


Talk to our team for advice, quotes, and purchasing.






