A Westinghouse water filtration system typically costs about $200-$1,500 for equipment, with a common professionally installed total of $500-$3,000. The final price depends on whether the setup is an under-sink filter or a whole-house system, the number of treatment stages, water-flow capacity, plumbing changes, and local labor rates.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Under-sink system, equipment only | $150 | $350 | $700 | Price varies by filtration stages and included faucet |
| Whole-house system, equipment only | $300 | $800 | $1,800 | Capacity and treatment media affect price |
| Under-sink system, installed | $250 | $600 | $1,200 | Assumes accessible plumbing and standard setup |
| Whole-house system, installed | $700 | $1,500 | $3,500 | Complex plumbing or extra treatment can raise totals |
What a Westinghouse system costs by installation type
For a typical U.S. home, an under-sink filtration setup often lands near $350-$800 installed when the unit connects to an existing cold-water line. A whole-house filter commonly totals $900-$2,200 installed for a standard home with accessible main plumbing. These ranges are budgeting estimates, not fixed manufacturer prices; models, retailer promotions, and local availability vary.
Expect the largest price difference between treating one drinking-water tap and treating every fixture. Whole-house systems need higher flow capacity and usually require cutting into the main supply line, while an under-sink unit treats a smaller volume and has a smaller installation footprint.
Assumptions: standard residential plumbing, common filter media, no major code upgrades, and ordinary access to the installation point.
How filter cartridges and plumbing shape the quote
A quote can combine the filtration unit, replacement media, installation labor, small plumbing parts, and any disposal or delivery charge. Ask whether the stated price includes a dedicated drinking-water faucet, shutoff valves, tubing, and the first set of cartridges. A low equipment price may not include those items.
| Quote component | Low | Average | High | What changes the charge |
|---|---|---|---|---|
| Filter unit and media | $150 | $600 | $1,800 | System type, capacity, and treatment stages |
| Installation labor | $100 | $350 | $900 | Access, pipe changes, and installation location |
| Faucet, valves, and fittings | $25 | $100 | $250 | Included parts and finish choices |
| Removal and disposal | $0 | $50 | $150 | Existing equipment or packaging removal |
| Water test or diagnostic | $0 | $75 | $200 | Whether testing is included in the service call |
Labor is often the main variable after the equipment price. Simple under-sink installation may take 1-2 hours; a whole-house installation can take 3-6 hours or longer if the main line needs rerouting.
Flow rate, water hardness, and treatment stages matter
Whole-house pricing rises when a household needs higher flow capacity or multiple treatment steps. A system serving a 1-2 bathroom home may cost less than one sized for 3-4 bathrooms and simultaneous showers, laundry, and appliance use. Check the manufacturer’s rated flow and the home’s peak demand rather than choosing solely by the number of stages.
Water quality can also change the required setup. Sediment-heavy water may need a prefilter; hard water may call for a softener or scale-control equipment alongside filtration. Adding a separate treatment unit can add roughly $400-$2,000 or more, depending on capacity and installation. A water test helps distinguish necessary treatment from optional upgrades.
Confirm the contaminant target and flow rating before comparing models. A filter designed for taste and sediment is not automatically a solution for hardness, iron, or every health-related contaminant.
Under-sink versus whole-house installation time and labor
An under-sink unit generally uses fewer materials and avoids changes to the home’s main water line. Plumbers commonly charge about $75-$150 per hour, with service-call minimums of roughly $100-$250 in many markets. A straightforward job may be billed as a flat installation fee instead.
Whole-house work takes longer because the installer must locate a suitable point on the main line, provide shutoff access, and leave room to change filters. Difficult access, corroded pipes, or a need to add a bypass loop can add $150-$700. Ask whether the quote includes leak testing and a walkthrough of cartridge replacement.
Extra charges for old filters, bypasses, and water testing
Some costs are tied to the home rather than the Westinghouse unit. Removing an old filter or softener may add $50-$200, while adding a bypass valve or nearby shutoff can add $75-$300. Delivery is sometimes free with a retailer purchase, but oversized equipment or remote delivery can cost $25-$100.
Cartridges are an ongoing expense. Replacement sets commonly run about $30-$150 for under-sink models and $50-$250 for whole-house systems, depending on media and how many filters are changed together. Follow the model’s replacement interval and water-use guidance; replacing cartridges too early wastes money, while overdue changes can reduce performance.
Regional labor rates change the installed Westinghouse price
Labor and service minimums differ by location. A quote in a high-cost metro area may be 15%-30% above a similar job in a lower-cost rural market; remote areas can also cost more when few installers serve the region. Local plumbing rules and permit requirements may affect work on a main supply line, although a basic filter replacement often does not require a permit.
Compare installed totals, not just the advertised unit price. Request the model number, labor charge, included fittings, warranty terms, and any water-test fee in writing so estimates from different contractors cover the same scope.
When a simpler filter costs less than a complete system
If the main concern is drinking-water taste at one sink, an under-sink filter may avoid the cost of treating every tap. A pitcher or faucet-mounted filter costs less upfront, but has limited capacity and requires regular cartridge changes. A whole-house system makes more sense when the concern affects multiple fixtures, but it should be sized to the home and matched to tested water conditions.
Do not assume reverse osmosis, a softener, or extra stages are required just because they appear in a package. Compare the cost of the exact treatment needed with the price of the larger bundle, including replacement cartridges and any drain or electrical work.
Ways to lower the Westinghouse filter installation bill
Choose the system based on a water test and household flow needs, not an oversized capacity estimate. For an under-sink installation, clearing the cabinet and confirming the existing shutoff works can reduce setup time. For a whole-house unit, provide photos of the main line and installation area when requesting quotes.
Get at least two itemized estimates and compare the same model, filter set, and installation scope. Buying during a retailer promotion can reduce equipment cost, but verify that the installer will work with customer-supplied equipment and that the manufacturer warranty remains valid. Avoid paying for treatment stages that do not address a measured water issue.