Have some questions regarding water heater/recirculation pump. Please educate me, I'm a plumbing newb.

I have no experience in plumbing and I'm trying to wrap my head around this...so please excuse my ignorance. My hot water recirculating pump recently died. The furthest faucet in the house now takes 3 minutes to get hot water. I'm looking to get it replaced so I'm doing some research beforehand. My current Grundfos pump is attached to the water heater (see pic below). -Is this the correct place to install the pump? -I have 4 pipes connected to my water heater. Positions 1 & 2 are the hot water exit and cold water intake, if I'm not mistaken. What are 3 and 4? -Shouldn't a 'check valve' be installed somewhere? -Should stop valves also be installed right before and after the recirculation pump so I don't have to flush out the pipes or water heater next time I have to replace the pump? -How much does the replacement usually cost? I'm in Southern California and a plumber quoted me $1200 to replace and install the new pump. -Is it usually not recommended to run a recirculation pump 24/7? Is it bad for the pipes? Or does it just shorten the life of the pump? https://preview.redd.it/yd4edgj0f2u71.jpg?width=3024&format=pjpg&auto=webp&s=c86a298e6a1956dc3f763cd83cfd249ae58d34da submitted by /u/gokou88 [link] [comments]

Have some questions regarding water heater/recirculation pump. Please educate me, I'm a plumbing newb.
Have some questions regarding water heater/recirculation pump. Please educate me, I'm a plumbing newb.

I have no experience in plumbing and I'm trying to wrap my head around this...so please excuse my ignorance. My hot water recirculating pump recently died. The furthest faucet in the house now takes 3 minutes to get hot water. I'm looking to get it replaced so I'm doing some research beforehand. My current Grundfos pump is attached to the water heater (see pic below).

-Is this the correct place to install the pump?

-I have 4 pipes connected to my water heater. Positions 1 & 2 are the hot water exit and cold water intake, if I'm not mistaken. What are 3 and 4?

-Shouldn't a 'check valve' be installed somewhere?

-Should stop valves also be installed right before and after the recirculation pump so I don't have to flush out the pipes or water heater next time I have to replace the pump?

-How much does the replacement usually cost? I'm in Southern California and a plumber quoted me $1200 to replace and install the new pump.

-Is it usually not recommended to run a recirculation pump 24/7? Is it bad for the pipes? Or does it just shorten the life of the pump?

https://preview.redd.it/yd4edgj0f2u71.jpg?width=3024&format=pjpg&auto=webp&s=c86a298e6a1956dc3f763cd83cfd249ae58d34da

submitted by /u/gokou88
[link] [comments]