| Water and household needs | What measured hardness and household usage does this proposal use? Include the test date, units, number of residents, and peak flow requirement. |
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| Exact equipment | Which manufacturer, model, capacity, valve, and bypass are included? Ask for product documentation and the certification relevant to the proposed treatment. |
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| Installation scope | Does the price include a site visit, plumbing connections, drain connection, electrical work if needed, permits if required, startup, and removal of old equipment? |
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| Total cost | Separate the installed price from taxes, optional upgrades, salt or media, replacement filters, and recurring service charges. Ask about purchase and rental terms separately. |
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| After installation | Who handles warranty labor, emergency calls, settings, and maintenance? Ask for written exclusions and any travel charges for your address. |
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