Cost guide
What drives the cost of whole-home water treatment
Water treatment is priced by what's in your water and where the equipment has to go — not by a catalog number. A test first, equipment second.
Equipment pricing is shown in our warehouse. Installed pricing is quoted after we confirm the details below — we do not publish estimated installed prices.
Scope
What's included, and what isn't
Ambiguous scope is where estimates go wrong. Here's the line we draw.
Included in the installed price
- Water testing and interpretation of the results
- Equipment set and plumbed into the main with a bypass
- Drain connection where the system requires one
- Startup, programming and a walkthrough of the maintenance schedule
Quoted separately
- Electrical outlet at the equipment location
- Drain line installation where none exists nearby
- Under-counter drinking water systems, quoted per fixture
- Ongoing media, cartridge or salt costs
Cost drivers
What actually moves the number
Two homes on the same street can price differently. These are the reasons why.
What's actually in the water
Hardness, sediment, iron, chlorine or taste complaints call for different equipment. Selling a softener to solve a taste problem is how people end up with the wrong system.
Depends on the home
Location of the main
Equipment needs to go on the main before the water heater, with space, a drain and often power. Finished basements make that harder.
Can raise the price
Bypass and serviceability
A proper bypass costs slightly more up front and saves you every single time the system needs service.
Depends on the home
Protecting the water heater
Scale is what kills tanks and tankless heat exchangers early in hard-water areas. Treatment is partly a water-heater lifespan decision.
Can lower the price
Comparing quotes
Ask every contractor these questions
Including us. A cheaper number often means a smaller scope, not a better deal.
- Ask to see the water test results the recommendation is based on.
- Ask what the annual consumable cost is, not just the install.
- Ask whether a bypass is included.
More guides
Keep reading
What a water heater replacement actually costs
An honest breakdown of what changes the cost of replacing a water heater in DC, Maryland and Northern Virginia — equipment, code work, venting, permits and access.
ReadWhat makes a tankless conversion cost more than a tank swap
Gas sizing, venting, condensate and descaling — the real cost drivers behind a tankless water heater conversion in DC, Maryland and Northern Virginia.
ReadHybrid heat pump water heaters: cost, rebates and the fine print
What a hybrid heat pump water heater install involves in the DMV — electrical, space, condensate and noise — plus how federal tax credits and utility rebates change the math.
Read
Send three photos. Get a fast water-heater quote.
Show us the full heater, the model label and the vent or connections. Our team reviews the job and follows up with clear options.
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