Buying a home in Texas with an existing water softener
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A lot of Texas homes, especially in hard-water areas like San Antonio and Round Rock (see hardness by city), come with a softener in the garage. It can be a real plus, or a leased unit with a monthly bill you didn't plan for. Use this checklist during your option period or inspection.
Checklist: what to ask the seller
- Owned or leased/rented? This matters most. A leased unit belongs to a dealer and may come with a monthly fee, a transfer form, or a removal charge. Ask for the lease or rental agreement and the dealer's contact info. Get the answer in writing.
- Is it a softener at all? Some "softeners" are salt-free conditioners or carbon filters. Look for a brine tank (the salt bin). No brine tank usually means it isn't a salt-based softener.
- Brand, model and serial number. These are usually on a label on the control valve or tank. With them you can find the manual, parts and warranty terms. Ask whether the warranty transfers to a new owner.
- Age. Ask the install date. Receipts, a date stamped on the tank or a sticker from the installer can confirm it.
- Service records. Resin changes, valve repairs, the last cleaning, and who did the work.
- Salt type and usage. Sodium chloride or potassium chloride, how often it's refilled, and the hardness setting on the control valve. Compare that setting with your utility's published hardness (how to read the report).
- Bypass valve. Find it and make sure it turns. You need it to service the unit or take it offline.
- Softener loop. Many Texas homes are built with a plumbed "loop" in the garage so a softener can be added. Check whether there is one and whether outdoor hose bibs are on soft or hard water.
- Drain and discharge. The regeneration line needs an air gap to the drain. Ask where it discharges, and whether a city or HOA rule affects that. Also ask whether a plumbing permit was pulled for the install. In Texas, water treatment installs can involve licensed plumbers or TCEQ-licensed water treatment specialists.
- Other equipment. Is there a carbon filter, iron filter or RO system too? Note each one's model and filter schedule. See our Texas filtration guide.
Signs the softener needs repair or replacement
- Spots and scale come back on fixtures and glassware even with salt in the tank.
- Salt level never drops (no regeneration), or a hard salt crust ("bridge") forms in the brine tank.
- The control valve has a blank display, error codes, or a timer that won't hold settings.
- Leaks, cracked tanks, or water sitting high in the brine tank.
- Resin beads show up in faucet aerators or in the drain line.
- The model is discontinued and you can't get valve parts.
- Low water pressure through the unit that goes away when you bypass it.
Replace, repair, or remove?
- Leased unit you don't want: ask the seller to end the lease and have the dealer remove it before closing, or to give you the terms in writing so you can decide.
- Owned, working, parts available: keep it. Set hardness to your utility's figure, clean the brine tank and track salt use.
- Owned, failing valve, sound tank: a valve or resin replacement can be cheaper than a new system. Get a quote.
- Old, unsupported or leaking: replace. Size the new unit using your hardness and household water use (sizing worksheet).
If you replace it: SoftPro options
- SoftPro ECO City Water Softener: a salt-based softener for city water, listed from $967 on October 23, 2026.
- SoftPro Elite Smart HE (city water): SoftPro's higher-end city softener, listed from $1,367.
- SoftPro ECO Well Water Softener: for homes on a private well. Test the well first, for example with the SoftPro Well Water Test Kit.
- Salt level sensor ($89, sold by SoftPro): an add-on that alerts you when salt runs low, if you'd rather not check the tank yourself.
Compare more models in our SoftPro softener guide. Prices change, so confirm on the product page.
Information only; not legal, plumbing or inspection advice. Your inspector and contract documents control what's disclosed and what conveys with the home.