Alan Hill Window Systems Limited provides uPVC door and window systems installed in Cardiff and Caerphilly. We offer professional and reliable installation services to both domestic and commercial customers. We always aim at providing our customers with the highest quality products and services at very competitive prices. We are also well known for our excellent after sales service. We offer a wide range of doors, windows and conservatories to suit your taste and requirements. Our products are not just pleasing to the eye, they're also very practical, durable and require minimal maintenance. We also offer a 10 year guarantee on all products and a 2 year guarantee on ironmongery. Our fast and efficient repair service doesn't incur any call-out charges for any window or door lock failures or misted sealed units. Due to the rising costs of fuel, most people look to make their houses more energy efficient. That's why we're registered with Thermal Ratings Register, Certass. When you get a product-rated window from us you will be given a unique label that will inform you about its energy efficiency.