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If you’ve ever noticed a chlorine smell from your tap, spotted white mineral deposits around your faucets, or wondered what’s really in the water running through your home’s pipes, you’re not alone. These are common concerns for homeowners across the Bay Area — and they’re exactly the kind of problems a water filtration system is designed to solve. At IRBIS Air, Plumbing & Electrical, we install water treatment systems throughout San Jose, including whole-house filtration, whole-house water softeners, and under-sink reverse osmosis systems. Many of our clients choose a combination of two or more systems to address both household water quality and dedicated drinking water filtration at the kitchen sink. This guide walks you through how the main types of systems work, what problems each one solves, and what a real installation from IRBIS looks like.
What a Water Filtration System Actually Does
A water filtration system removes unwanted substances from your water before it reaches your faucets, shower, appliances, or drinking glass. In a typical Bay Area home connected to a municipal supply, the incoming water has already been treated by the utility but it still contains chlorine or chloramines used for disinfection, residual heavy metals, volatile organic compounds (VOCs), and dissolved minerals that cause hard water scale. Depending on which type of system is installed and where, it either treats all the water entering the home at the main line (whole-house), or it filters water at a single point typically the kitchen sink (point-of-use). Whole-house systems protect your pipes, water heater, and appliances in addition to improving water quality at every tap. Point-of-use systems like reverse osmosis deliver a higher level of purification specifically for drinking and cooking water. Many homeowners in San Jose use both.
The Systems IRBIS Installs — and What Each One Does
IRBIS installs three main types of water treatment systems, and the right combination depends on your water quality, your home’s plumbing, and what problems you’re trying to solve.
The HALO 5 Whole-House Filtration & Conditioning System is a five-stage system installed at the main water line that addresses a wide range of water quality issues in a single unit. Stage 1 uses granular activated carbon to remove pesticides, VOCs, heavy metals, and odors. Stage 2 uses Centaur High Activity Carbon to further reduce chlorine and chloramines — the source of the taste and smell many Bay Area residents notice in their tap water. Stage 3 runs water through Filter-AG Plus media, filtering particles down to 5 microns. Stage 4 adds a high-density garnet layer for fine particulate matter. Stage 5 the HALO ION Inline Conditioner — uses magnetic conditioning to keep hard water minerals suspended rather than allowing them to precipitate out as scale. The HALO 5 requires no salt, no chemicals, and no filter replacements, and is rated for 1,000,000 to 3,000,000 gallons roughly 10 years for a household of four.
The Impression Series Whole-House Water Softener is what we install when the primary issue is hard water. The Bay Area’s municipal supply can be moderately to very hard depending on the season and source, and over time that mineral content builds up as scale inside pipes, on fixture surfaces, inside water heaters, and in dishwashers and washing machines. A water softener works through ion exchange; it replaces calcium and magnesium ions (the minerals that cause hardness) with sodium ions as water passes through the resin tank. The result is softened water throughout the entire home. Unlike the HALO 5, a traditional water softener does require periodic salt replenishment, but the long-term protection it provides to plumbing and appliances typically far outweighs the maintenance involved. Whole-house softener installations from IRBIS run approximately $6,000–$8,000 installed, depending on system size and any plumbing modifications required.
The Waterdrop Under-Sink Reverse Osmosis System is installed at the kitchen sink and delivers highly purified water for drinking and cooking. RO works by pushing water through a semipermeable membrane under pressure, removing dissolved solids, heavy metals, fluoride, nitrates, and other contaminants that whole-house filters are not designed to address. The Waterdrop system produces clean, great-tasting water on demand directly from a dedicated tap at the kitchen sink. It’s a compact, efficient solution, and at approximately $1,800–$1,900 installed it’s one of the more cost-effective upgrades a homeowner can make to their drinking water quality.
Comparison: Which System Is Right for Your Home?
Here’s a quick overview of the systems IRBIS installs, what each one is best suited for, and estimated installation costs.
The most common combination we install is a whole-house water softener paired with an under-sink RO system. The softener handles scale throughout the home — protecting pipes, the water heater, and appliances while the RO unit at the kitchen sink delivers highly purified water for drinking. For homeowners who also want whole-house filtration of chlorine and VOCs in addition to softening, the HALO 5 can be added to the system.
What an IRBIS Water Treatment Installation Looks Like
A typical project we complete in San Jose starts with a homeowner who has noticed chalky white deposits on faucets and showerheads, a chlorine taste in the tap water, and accelerated scale buildup inside their water heater or dishwasher. These are classic signs of hard water combined with high chloramine levels both common in the Bay Area’s municipal supply. After a conversation about the home’s water quality concerns and plumbing layout, we recommend the right system or combination and walk the homeowner through the options and costs before any work begins. For a whole-house softener installation, our plumbers identify the right point on the main supply line — typically near the water meter or in the garage — cut in the softener with isolation valves on each side, and connect the drain line and brine tank. For the under-sink RO, the system is mounted inside the kitchen cabinet, connected to the cold water supply line, and a dedicated faucet is installed at the sink. Most installations are completed in a single visit. We also provide documentation for the installation, which is useful for home records and future resale.
Conclusion
Understanding your water quality options is the first step toward making the right choice for your home. Whether you need whole-house filtration, a water softener, a reverse osmosis system for drinking water, or a combination of all three, IRBIS installs and services all of these systems across San Jose and the Bay Area. If your water doesn’t look, taste, or feel the way it should, we can assess your home’s water supply and recommend the right solution. Call Us at +1 (669) 312-3643 or contact us online at irbishvac.com/contact to schedule a consultation.
During a repair visit, our technicians will inspect your A/C system, diagnose the problem, and provide you with repair options. Once you choose an option, we'll proceed with the necessary repairs. Afterward, we'll test the system to ensure it's working correctly and provide you with a detailed report.
