The Truth About Diversitech Condensate Pumps

So, what is it that is failing in these pumps?

Do you recommend Drummond pump sold at harbor freight?

This is exactly my problem and my pump is as clean as this one.
I have DiversiTech CP-22 Pump on my A/C unit (was install everything new including duct work less than 4 years ago and I rarely use the A/C). The pump turns on but it doesn't seem to pump the water out to the outside so I took it out and it looks brand new and tested the following scenarios:
- Tested outside and obviously the water rushing out
- Using the compressor to blow the air through the drain coil and the air comes out at the other end so most likely it's not clogged.
- Plugging it back w or w/o the one way valve, the pump turns on and I do see the water going through the clear plastic portion (only about 6" then it connects to the copper tube) but it doesn't come out to the outside of the house. I tested a day before and it comes out a little bit at some point.
I am guessing the pump is not strong enough to push it through the 7' or 7.5' going up to the attic but not sure if it was a partial clogged coil or the pump itself. One would think that the coil is new when they install the whole brand new system including duct and duct registers.

Thanks Chris! I bought one b/c it was all they had at Lowe's but couldn't any 'how to install' videos. Decided to research a little more and your video came up. I'll save myself the trouble.😆

What are those little clips you used for the connection?

Can you specify what Little Giant you recommend?

I had one go out tonight, the motor is sticking. I cleaned it, plugged it into test, raised the float, the motor spun a little and stuck. I can turn the spindle by hand but, you can feel it sticking.

Any thoughts on Beckett pumps?

I use to like diversitech but not any more. But those pumps have a rubber check valve in them. A few times I just cleaned the check valves, made sure the vynil hose was clean and the pump worked fine. I think thats what happened with yours.

WE USE THOSE ALL THE TIME WITH NO ISSUES. NOTHING WRONG WITH THE PUMP! IT IS WORKING TO HARD TO PUMP THROUGH A RESTRICTED HOSE AND FAILING! WHEN YOU INSTALL A NEW PUMP YOU PUT IN A NEW HOSE!

I don’t like the diversitech pumps either, I tried a few of them and quickly went back to the good old little giant

Greedy, corrupt suits profit margins are more important than quality in the USA.