Reviews For Grundfos Pumps
March, 2009 - I have installed a total of four of these systems for family and friends. One on my own home over 5 years ago, two on our friend's houses more than 3 years ago and one on my parents house over 4 years ago. We all have had absolutely no problems. The cold water does start out warm, but quickly becomes cold. The timer works flawless, just set it to turn on about a half hour before you normally wake up or get home. Four out of four love our systems here. Grundfos is known for there quality. We use there pumps in the field all the time with very minimal problems. Make sure you know what you're doing or the person who's installing the product know's what they're doing. Highly recommended.
December 2008, Unreliable product (this would get zero stars, if such a rating were possible). The first pump had to be replaced 1 month after install due to a faulty switch. The replacement pump failed completely after 2 years + 3 weeks. Grundfos first said a 30 month warranty would apply, then gave us the run-around for several weeks and changed their mind to say it was a 24 month warranty. They ignored a letter requesting support, and ended with a "courtesy call" offering to provide contact information for a distributor who would be glad to sell us a *new* pump. No way!! Grundfos is a big international company, but after this experience one wonders if they still deserve to be. We will never waste money buying this brand again, especially considering the install cost can equal or exceed the hardware cost for this type of pump.
February 2012, I had a college kid install mine 5 years ago and I've had no problems whatsoever. Yes, it does circulate the hot water into the cold pipe at your sink, but it's a small inconvenience for the HUGE amount of water it saves. I recently decided to wire my Grundfos into a push-button timer that circulates only for 10 minutes, and then automatically shut off. The clock on the pump is then set to ON so whenever the unit gets electricity from the timer (it runs for the selected time 10,20,30,60 minutes) and it automatically shuts off. This works well for our house where my wife and I just push the timer a five minutes before we take a shower. This solution might work well for the person who has it in their guest room. Alternatively, there are remote RF (radio frequency) switches (sold for woodworking vacuum systems) where you could turn the pump ON/OFF from the guest bath only when needed.
March 2012, I installed one of these pumps on my hot water heater more than 4 years ago. It has worked flawlessly since that time. The hot water line to my master bath is about 150 feet long. Before installing this system, I had to run the hot water in my shower for 4-5 minutes before the water was warm enough to step in. Now it takes no more than 20 seconds on a cold morning to reach an acceptable temperature