The folks at this company (Oceanside RV Supply) went out of their way to treat me as as not just a customer, but a PERSON, with respect! A no-nonsense company that does the right thing. I only write reviews when I receive poor service, or good/great service. I know, I should review all my products and will begin to! The last thing I want to do after work is to get back on a computer, but in this case, I feel compelled to share my review. I used a Shurflow 12 V pump for years, and it was noisy from the start. I know that I installed it correctly because I am mechanically inclined, I read directions well, and enjoy learning and take what I do seriously and do not cut corners. Since it was the first water pump I installed, I did not have anything to compare it to in terms of noise and just figured that pumps are just noisy. I tried different methods to try to quiet the noise and vibration, which included securing all water lines. My pump froze a few times a year or two after installation, continued to work the same, but after the last freeze of approximately minus 10 degrees Fahrenheit, the Shurflow pump would kick on and off quickly for about a second, every minute or so. I thought that there may have been a leak in the line, but this was not the case. I researched changing the position of the adjuster screws and studied the effects. I could not solve the problem! I searched out a pump that is advertised to be more likely to withstand freezing, which I assume means the internal parts freezing along with the fittings. This is the main reason I bought this 12 volt Flow Max pump! Well, it is pleasantly quieter, by far than my old Shurflow pump. It was easy to remove my old pump, which just required disconnecting the red and black wires, removing the screws that secured it to it's base, and removing the inflow and outflow water lines. The new Flow Max pump fit right in it's place. I guess it's a universal fitting, which makes sense to me! A lot of the installation is basic plumbing and electrical, but take your time, and thread the fittings slowly and with precision. Remember to add an inline fuse. The water pressure is good, and flow is steady. There is a little vibration in the line when the flow rate is much less than max, which is when I use a water filter, but the noise from vibration is FAR less than with the Shurflow unit I used. And with the Shurflow, I had a lot of vibration in the line even when my faucet was turned up. I've only been using the new pump for about a week now, and expect it to continue performing well. I will post again if things change. I will try to get a photo attached in the near future.