How-To Guides
Plain-English explainers on water problems, testing, sizing, salt and maintenance, the homework before you spend a dollar on a softener or a filter.
15 reports published
Prices checked Oct 7, 2026
Water Softener Repair: 12 Problems, What Causes Them, and What a Fix Costs (2026)
Water softener repair averages $430 (HomeGuide) to $559 (Angi). 12 problems mapped to cause, DIY check and cost, and when to replace the softener instead.
Read the guide
Water Softener Installation: The Step-by-Step Job, Start to First Soft Water
How to install a water softener: tools, bypass, flow direction, drain line and air gap, programming and startup, plus the five mistakes that cause callbacks.
Read the guide
Whole House Sediment Filters: Micron Ratings, Types and Top Picks
A sediment filter protects everything downstream of it. Which micron rating to choose, where it goes on a well, and what a reusable screen costs to run.
Read the guide
Hard Water Filters: What Works, What Doesn't (Filter vs Softener)
No filter removes hardness. Here is what a hard water filter actually does, which three tools do work, and how to tell which one your water needs.
Read the guide
Water Softener Replacement: When to Replace It, and How to Swap It
When to replace a water softener instead of repairing it, what a swap involves, and how to do it without a dealer. The five failure signs and the DIY decision.
Read the guide
Water Conditioners: The Complete Guide (Types, Costs, What They Really Do)
A home water conditioner cuts scale by over 88% in independent testing and removes zero grains of hardness. The four things sold under that one word, decoded.
Read the guide
Whole House Reverse Osmosis Systems: Do You Actually Need One?
Whole house reverse osmosis starts near $2,227 and runs past $9,695 before a plumber. What it fixes, what it wastes, and the cheaper setup that solves most homes.
Read the guide
Is a Water Softener Worth It? The 10-Year Math
Is a water softener worth it? Above 7 gpg usually yes, below 3.5 gpg no. The honest 10-year math: $1,000 to $8,400 of cost against one measured saving.
Read the guide
How Long Do Water Softeners Last? (And 5 Signs Yours Is Dying)
How long do water softeners last? 10 to 15 years with the resin, 8 to 12 on big-box valves. The 5 signs yours is dying, and when to stop repairing it.
Read the guide
What Size Water Softener Do I Need? Calculator, Chart and Grain Guide
Multiply people by 75 gallons a day, by your hardness in gpg, by 7 days. That is your weekly grain load, and it picks your size. Chart, iron rule, traps.
Read the guide
10 Signs of Hard Water in Your Home (and What Each One Costs You)
The 10 signs of hard water, from crusted faucets to a rumbling water heater, what each one costs you, and the 60-second strip test that confirms it at home.
Read the guide
How to Fix Hard Water: 6 Solutions Compared (From $20 to $1,785)
Six ways to treat hard water compared by price and honesty: cleaning, shower filters, descalers, salt-free conditioners, and the softener that removes minerals.
Read the guide
Hard Water Explained: What GPG and PPM Numbers Actually Mean
Hard water starts at 7 gpg on the USGS scale. What grains per gallon and ppm really measure, how much mineral that is per gallon, and how to get your number.
Read the guide
Water Softener Salt Guide: Pellets vs Crystals vs Block (Which to Buy and How Much)
Water softener salt, decoded: pellets vs crystals vs block, which type to buy, how much you will use ($50 to $150 a year), and when potassium chloride wins.
Read the guide
Water Softener Maintenance: The Complete Checklist
The complete water softener maintenance checklist: salt refills, salt bridges, brine tank cleaning, resin cleaner, and the 15 minutes a month that buy 15 years.
Read the guide