Monthly Payments to Fit Your Budget At Haverhill’s Pella® Showroom, our staff wants to help make your window and door replacement search easy and affordable. That’s why we have a variety of product lines to fit almost any budget and a payment plan that makes it all work. Our Haverhill team will help you choose, install and handle the financing for your project. GreenSky has a payment plan in partnership with Pella, available to our customers Financing options may vary by region. Visit your Haverhill Pella Showroom to better understand your financing offer. Pella products must be installed by a Pella professional installer to qualify.