This Old House Water Softener systems are designed to address hard water issues in residential settings by removing minerals that cause scale buildup. Homeowners often rely on these units to protect plumbing, improve soap performance, and extend appliance life.
By understanding how a This Old House water softener integrates with your home’s plumbing, you can make informed decisions about installation, maintenance, and long-term water quality.
| Model | Type | Capacity (grain) | Regeneration | Smart Features |
|---|---|---|---|---|
| CompactPro 48000 | Twin-Tank | 48000 | Metered Electric | Yes, Wi-Fi & App |
| DaySaver EcoTwin | Twin-Tank | 32000 | Time-Based | No |
| SoftLink 25000 | Single-Cabinet | 25000 | Metered Demand | Yes, Usage Alerts |
| MiniTwin 16K | Twin-Tank | 16000 | Demand Initiated | Yes, Wi-Fi & Scheduling |
| BudgetSoft 12K | Single-Tank | 12000 | Time-Based | No |
How This Old House Water Softener Works
Ion Exchange Process
The core of a This Old House water softener is an ion exchange tank filled with resin beads that attract and hold hardness ions like calcium and magnesium. As hard water passes through, sodium ions are released, leaving softer water that flows to your taps.
Backflush and Regeneration
Over time, the resin beads become saturated and must be cleaned through a backflush cycle that reverses flow to flush trapped minerals. Regeneration introduces a concentrated brine solution to recharge the resin, preparing the system for ongoing performance.
Installation and Plumbing Considerations
Pipe Compatibility
Installing a This Old House water softener requires compatible piping, typically copper or PEX, and correct sizing of valves and bypasses. A professional plumber ensures that pressure, flow rates, and drain lines meet local code and household demand.
Space and Location
These units need a dedicated space near the main water entry point, with room for the control valve, tanks, and drainage. Planning for access simplifies future service and reduces the risk of leaks or noise issues.
Maintenance and Longevity
Salt and Resin Care
Regularly checking salt levels in the brine tank and occasionally cleaning or replacing the resin bed are essential tasks. Following the manufacturer’s schedule helps maintain efficient softening and prevents unexpected downtime.
Annual Service Checks
Scheduling a professional service at least once a year allows technicians to inspect valves, seals, and electronic controls. Early detection of wear items can prevent costly repairs and keep water quality consistent.
Performance and Efficiency
Water Quality Metrics
After installation, many users notice softer-feeling water, reduced spotting on dishes, and less soap scum in bathrooms. Measuring hardness before and after the unit provides clear evidence of system effectiveness.
Regeneration Efficiency
Modern This Old House water softener designs focus on minimizing water and salt use during regeneration. Demand-initiated systems adjust cycles based on actual consumption, which can lower operating costs and environmental impact.
Key Takeaways and Recommendations
- Confirm household grain capacity needs before purchasing a This Old House water softener.
- Plan space and drainage during installation to simplify future maintenance.
- Use the correct type and amount of salt to protect the resin and optimize cycles.
- Schedule annual professional service to catch wear items early.
- Monitor water hardness and pressure after installation to validate performance.
FAQ
Reader questions
Will a This Old House water softener fix my low water pressure? In most cases, a properly sized and maintained unit will restore pressure by preventing mineral buildup in pipes. If low pressure persists after installation, have a plumber check for other restrictions or leaks. How do I know when it’s time to regenerate?
Electric metered models signal regeneration based on actual usage, while time-based units follow a preset schedule. You can also monitor salt levels and water feel to catch issues between scheduled cycles.
Can I install this system myself to save on labor costs?
DIY installation is possible only for experienced homeowners with solid plumbing skills. Mistakes can lead to leaks, code violations, or damage to the unit, so professional installation is strongly recommended.
What should I do if the unit starts making loud noises?
Loud banging or grinding often indicates air in the lines, a failing valve, or incorrect backwash settings. Check the manual for troubleshooting steps and contact service if the noise continues.