//Quick answer
- Softener: hardness and scale, whole house.
- Filtration: sediment, chlorine, taste and odor, whole house.
- Reverse osmosis: drinking water at one faucet.
- Test first; sometimes the answer is that you do not need anything.
01Definition
What does hard water do to a house?
Dissolved calcium and magnesium leave scale on fixtures, shower glass and inside water heaters. In a tank it settles as sediment; in a tankless unit it coats the heat exchanger. Both make the heater work harder and fail sooner. Soap works less well, and spots show on everything that dries.
What does a water test measure?
Hardness first, then the things that shape the recommendation: chlorine, sediment, pH and total dissolved solids. The result decides whether the problem is hardness (softener), particles and taste (filtration), drinking-water quality (reverse osmosis), or a combination. Guessing from a spot on a glass gets the wrong equipment.
02When it applies
When is a softener the answer?
Scale on fixtures, a water heater that rumbles or scales up early, and a test that confirms hardness. A softener removes the hardness minerals at the main line with an ion-exchange resin bed, so every fixture in the house benefits. It does not filter.
When is filtration or reverse osmosis the answer?
Chlorine smell, sediment, taste or odor is a whole-home filtration problem. Drinking and cooking water quality is a reverse osmosis problem, solved at one dedicated tap. Many homes end up with a softener plus RO at the kitchen sink; that is the pairing the water test usually points to when both problems are present.
03What goes wrong
What goes wrong when equipment is sold before the test?
A softener installed for a taste complaint, or a filter installed for a scale complaint. The customer paid for a system that does not touch the problem. Testing first is what makes the recommendation defensible, including when the recommendation is nothing.
04Proof
- Jason Shen, Google, September 16, 2026: "Daniel did an excellent job installing my whole house carbon filtration and water conditioning system. He also flushed out my tankless water heater."
- No trip charge, a 1-hour response time, and 24/7 emergency service.
- 1 year minimum warranty on labor. Manufacturer warranty handling varies by manufacturer.
- California CSLB C-36 licence #998069. Licensed, bonded and insured, with workers compensation.
05Action
Start with a water test
Done-Rite tests your water first and recommends equipment based on the result. Water treatment pricing has not been published; call for pricing after the test. No trip charge.
//Keep going
//Terms used in this guide
Where this applies
Done-Rite runs these calls across Orange County from its shop in Anaheim, CA, with no trip charge in any city it serves.
Common questions
A softener handles hardness and scale for the whole house. Whole-home filtration handles sediment, chlorine and taste at the main. Reverse osmosis polishes drinking water at one tap. Many homes end up with a softener plus RO at the kitchen sink.
Yes. Done-Rite offers water testing and recommends equipment based on the result. Sometimes the answer is that you do not need anything.
Done-Rite has not published water treatment pricing. Call for pricing after the test.
