15+ Years of Pure Water Solutions
Sigma Aquaguard Pvt. Ltd. is a leading water purifier sales and service company headquartered in Velachery, Chennai. We specialise in complete RO water purifier solutions for residential and commercial clients, having served 25,000+ satisfied customers to date.
Our expert team is trained to handle installation, repairs, preventive maintenance, and Annual Maintenance Contracts (AMC) for all leading RO purifier brands — delivering prompt service, transparent pricing, and long-lasting customer relationships.
Complete RO care, start to finish
From the first installation to years of upkeep, one team handles every part of the job.
RO Purifier Sales
High-quality RO systems for homes and businesses.
RO Installation
Professional installation for optimal performance.
RO Repair & Troubleshooting
Quick diagnosis and reliable repair services.
Filter & Membrane Replacement
Genuine filters for safe and pure drinking water.
Annual Maintenance Contracts
Affordable AMC plans for worry-free maintenance.
Service you can plan your week around.
We built our reputation one visit at a time — here's what customers keep telling us matters most.
15+ Years of Industry Experience
A team that has seen — and fixed — nearly every RO issue Chennai's homes and offices can throw at it.
25,000+ Happy Customers
Trusted across Chennai's homes and businesses, one referral at a time.
Certified & Skilled Technicians
Trained on installation, repair, and every major RO brand in the market.
Genuine Spare Parts
No generic substitutes, ever — only manufacturer-approved components.
Affordable, Transparent Pricing
You know the exact cost before we start any work.
Same-Day Service Support
Most complaints are resolved the same day you call us.
Complete Multi-Brand RO Solutions
One call, one technician, covers every RO brand you own.
Reliable AMC Plans
Set-and-forget yearly maintenance, so you never have to remember.
Fast, local service across Chennai
Need a purifier serviced this week?
Call our Velachery office or book online — most complaints are resolved the same day.