Had whole house installed with Pella Impervia double hung windows. Had serious air leakage throughout all of the house windows. After 3 service calls and no answers, all the Pella service manager could tell me was that in thier gaurentee, they have the right to refund my money and walk away. After 4 months of back and forth, I took that option which left me to shop for windows and go through the whole process of instillation again. For referance, I used Gilkey and they are tenfold better than the Pella impervia windows. Beware as this is a cheap product and they are trying to get into the vinyl replacement market with very inferior product.

I had Pella Designer Series casement windows with Slimshades installed in July 2004. One and a half years later, the shades on most windows have indented the wood as they contact the sash (putting the shade down). On 4 windows the nylon blocks on the bottom of the shade have worked through the stain and hard coat and are mutilating the wood. I applied Varathane Diamond Wood Finish in 3 coats as instructed by the manufacturer instruction. Pella Iowa and the local Pella distributor have been stalling this complaint for 15 months with no satisfactory repair or replacement. Pella, by far, exhibits the worst customer service I have ever experienced with any company. I truly regret my decision in choosing Pella.