Ecosmart Low Water Pressure

[Curtis Cecil]

So I had the tankless water heater for at least 5 years and it's been working great. Recently the water hasn't been as hot so I went through the troubleshooting steps from Ecosmart 27 tankless water heater. The heating elements all tested good so the guide pointed me to scale build up. I took everything apart, cleaned it with vinegar and reassembled the unit.
That's when I started to have low pressure problems at the sinks and showers. I took it all apart and thought maybe there's debris stuck somewhere and used a pair of finger grabbers to try to find anything in the heat exchangers but nothing was there. I put vinegar in the heat exchangers for about 3 hours and reassembled everything.
Started to run all the faucets and lots of junk coming out but still low water pressure. Does anyone have any ideas on what I can try before giving in and calling a plumber which will probably cost me an arm and leg to diagnose the problem?

 

[Bannerman]

From your description, it does not seem as though you utilized a pump to circulate the vinegar solution.

Here is one of many kits that are utilized for descaling a tankless. The vinegar solution will be usually circulated through the WH for at least 1 hour, but as the unit has not been descaled for 5 years, multiple sessions may be required using fresh solution for each session.

https://www.homedepot.com/p/Eccotem...NSI-60-Certified-Descaler-Kit-EZKIT/301356674

Unless a water softener is utilized to remove the minerals that cause scaling, the minimum descaling requirement is typically yearly,

 

[Sponsor]

 

[Curtis Cecil]

Well a water softener was put in about in the 2nd year of use. Also when I had the tankless water heater installed I had an Aqua Crest scale inhibitor installed in the water line. So it's not that there should be a lot of scale at all but for some reason I lost alot of water pressure.

 

[Curtis Cecil]

Time to call a plumber. Thanks for all the help!

 

[Fitter30]

Have checked faucet aerators? Is there a screen entering water?