The durability of any appliance depends on its intended use and service condition. Likewise, a Tankless water heater has to be taken care of, so that it works efficiently for a long run. Reviews of top rated Tankless water heaters depict that if a water heater is well maintained, it will provide an efficient service for about 20+ years.
Tankless Water Heater Problems
Manufacturers have successfully tried to launch a maintenance-free Tankless water heater, but sometimes your on-demand water heater may create some different issues. The typical problems that have come into notice by the users are:
Over time, the accumulation of minerals within the heating unit may erode the walls of the heating chamber. Hard water is more prone to build up minerals like calcium or magnesium. These minerals deposits should be removed from time to time to avoid imparity.
If your system utilizing more than its capacity, it may get overloaded and collapse. If your heater frequently gets overloaded, you must upgrade it or add a second unit.
Cold Water Sandwich
It is a phenomenon of first getting hot water for a few minutes, and then a sudden burst of cold water. The initial hot water is due to the trapped water in pipes during the first use. Although your electric water heaters are instantaneous, yet the healing process takes a few minutes.
Air Supply or Exhaust Blockage
Obstructed air intake or exhaust vent will trouble the in-built mechanism of your best tankless electric water heater. You need to keep an eye on the vent pipes to ensure they are adequately fit and free from the puncture hole. You need to regularly inspect and clear any blockage in the flow of combustion air venting.
General problems with tankless gas water heater are that its ignition may fail to ignite due to inadequate fuel, natural gas or propane. You might have to call the technicians to check any issue caused due to the gas valve or water valves.
Flames failure may also cause due to insufficient gas supply or no electricity. Technicians may support you in this regard.
1. Regularly descale water heater from mineral deposits.
2. Refer to your water heater maintenance checklist.
3. Remove vent blockage caused by dust stone, birds’ nest, wasp or rodent, etc.
4. Avoid the immediate use of the heater by letting water flow through the pipes initially.
5. Consider the tankless water heater maintenance cost before you invest in the best tankless water heater brand.
6. Carefully follow the instruction given by the unit’s manufacturer.
Steps of Tankless Water Heater Maintenance
Turn off the power source: Firstly, turn off the power switch or shut off the main gas valve and then unplug your water heater.
Close off the water valve: Remove the lid from the heater and turn off the three water valves that are attached to the unit.
Remove the purge port valve caps: You will have to locate and close purge port valves. They contain a lever which resembles with the letter ‘T.’ After closing the valves, let the system release the pressure for a few minutes. Now close the valve caps that placed on the end of hot and cold-water valves.
Attach the Hosing Line: Your Tankless water heater maintenance kit may contain hosing lines that are used to clean the unit. You will have to attach hosing wires with each of the three valves. The hosing line should be long enough to reach a bucket from your appliance.
Open the purge port valves: The purge port valves have to be opened now by twisting it perpendicularly towards the hot and cold valves
Cleansing of the Tank: Now your heater is ready to be cleaned. You can use 2.5-gallon undiluted vinegar for the cleansing process. Avoid using chemical solutions as its residue may harm the unit and affect the purity of water.
Close the purge port valve: After the cleansing process, close the purge port valves by twisting it back to its parallel position. Once the purge valves closed, allow the system to standby for a few minutes. This will release the pressure.
Detach the hosing lines: Disconnect the hosing lines from the water valves carefully.
Replace the purge port valve caps: Now replace the valve caps into their place and tuck them firmly to its rubber seal. Ensure that caps are closed tightly to avoid any leakage.
Restart your water heater: Follow specific directions and instructions given in the manufacturer’s manual and safely step by step restart the system.
Rotate and open valves: About the manual, open the hot and cold valve parallel wise following the position of the main valve.
Turn on the hot water tap in your sink: Finally, turn on the hot water tap and let the air escape through the pipes. Leave the valve open for a few minutes till the water runs steadily into the faucet.