Water hammer is a specific plumbing noise, not a generic name for pipe clatter. It occurs when you shut off fast-moving water suddenly, bringing it to a quick halt and creating a sort of shock wave and a hammering noise. Fix “water hammer” by draining the plumbing system. Open the uppermost faucet (or the one furthest from the water meter) and the lowest (or closest to the meter) and allow the water to flow to a lower-level sink or floor drain. Draining the system restores air to air chambers. Close the lowest faucet and refill the system. For more detailed information see this article.
Selecting a new heating system can be complex. However, if you do your homework and talk to licensed heating/cooling professionals, a new system can make your home more comfortable and reduce energy costs.
- Usually it is more energy- and cost-efficient to replace systems older than about 15 years.
- The system you choose will depend on local climate, home size, amount of insulation, and the heating/cooling usage patterns.
- Look for an ENERGY STAR® label.
- Furnaces are rated by annual fuel-utilization efficiency (AFUE). High-efficiency units are rated above 90 percent.
- If choosing an air-source heat pump, look for one with a SEER of 13 or greater and a heating season performance factor (HSPF) of 7 or more.