March AC-5C-MD Pump

[travis_]

http://www.marchpump.com/documents/series_5.asp#AC-5C-MD%20115V%2050/60Hz%20&%20230V%2050/60Hz%20Models
I am relying solely on this March 1/8th HP pump for my system’s water flow. It is working great, but I am wondering if I need to worry about longevity and whether or not I should have a backup. And if I should have a backup, should I get another March pump or am I better off buying something else?

Appreciate input!

 

[DonW]

I dont know a thing about those. Look like a Iwaki with a different motor. I think if it was my only source of circulation then Id have a spare on hand.

Don