We have some old windows in our house and wanted to improve the efficiency by replacing them. We got a fast quote from RDS on the energy core series windows and we can't recommend them, or RDS, enough. They were professional, efficient, and the windows have been great. Our bedroom gets a lot of sun exposure, and the new windows keep the room a solid 5 degrees cooler than before. The installers were efficient and did a good job and worked quickly. We fully plan on utilizing RDS to replace the reset of our windows, money permitting, but you won't find this quality for a better price, absolutely recommend.
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