Undersized circulator pump?

[jmulla]

We have a hi-efficiency, natural gas hot water heating system. The maintenance man said that our circulator pump was undersized for the size of the boiler. He said this would shorten the life of the boiler/pump.

We don't have a problem with getting enough heat in the house. The house is almost 80 years old, so some inefficiencies are surely due to the quality of insulation, etc.

The boiler is a Crown Boiler model # FCM120NS. (see pic of label https://imgur.com/fkZP7lI)
The circulator pump is a Taco model 007-BF5-JW, 1/25 hp. (pic also attached https://imgur.com/GgLVnnP)

He recommended upgrading to the model 012- pump which is 1/8 hp.

Any learned opinions on whether this is a good recommendation, or just an upsell?

Thanks in advance for your feedback.

 

[voletl]

If you are getting heat the circulator is just fine if the circulator was under sized you wouldn't be getting heat. There is a lot to consider when choosing the right size circulator so some guy coming in taking a look at it and saying that it's the wrong one tells me he has no idea what he's talking about and just wants to upsell you a new circulator