Pella Balance

Hi there- thanks for reaching out to us! 

We'll need to see some photos of the balances removed from the window to be able to determine the best replacement option for your project Jason. Once we can see them we can get the ball rolling on finding you the best option! 

Thanks for getting back to us, Jason. I was afraid you might have had this. This is an old discontinued Pella box balance. Pella offers no replacement for these and haven't for years. I recommend contacting a local mom and pop type store who deals in Pella hardware to see if they have older stock lying around. I'm sorry we cannot be of more help.

Unfortunately, as Paul said, no replacement is offered for this part; not even a retrofit. A new window is likely your only option.

I'm afraid not, Jason. We've tried just about everything and we have not gotten an Andersen balance to work as replacement for these Pella boxes.

If you feel you're really able to make some modifications to get this to work, that gives you a few more options than past customers. Let me do my due diligence and research this.

Could you provide the width and height of the complete window and the weight of the relevant sash? Once I have that, I'll dive into my books.

Alright, to start... here are some fuller details about the Andersen balance box -- for example, the 24-637.  The length of the box is 6-5/16" (with the flange it is 6-7/8"), the width is 3", the thickness is 3/4", and the distance between the cords is 2-1/4". The 24-637 balance box is for a 12 pound sash, and the cord length is 37".

I'd still be interested in seeing the full height and width of your window (plus sash weight), in order to mull this over a little further.

Thank you. In that case, I recommend our 24-737 balance box. Just remember that this was made for Andersen windows, not Pella. There is no guarantee that it will work. I'm just sorry we couldn't offer anything better!

Awesome! I'm glad to hear it worked out. Thanks for posting your process, too, I'm sure this will be a huge help to customers in the future. Please let us know if you ever need anything else, we're always here to help.

The digits in this code aren't directly representative of any physical detail regarding the balance's calibration or the weight it supports. It's strictly an abstraction.

To tell you the truth, it's been a long time since we visited the topic of using Andersen balances on a Pella window, but looking at the question in the light of 2023 I'm not sure that I would advise it. We've had other customers try it since this post in 2019 and none have been successful. If you were to ask me today, I would tell you that it's probably not worth trying. 

I know that's not the news you want to hear. These old Pella balances are very difficult to source and supply, so I know that you're in a pinch to find anything that would install. But Pella specifically designs their windows so that you can't use other brands; they don't want you going to any company other than them, and they do a lot to ensure exactly that and it's rare to see an exception to the rule.

I am sorry to be the bearer of bad news. I just don't think this hardware will work for you.