Alan Hill Window Systems logo

Established in 1988, we offer professional and reliable installation services to both domestic and commercial customers. Started as a partnership, we recently expanded and converted to a limited company. Customer satisfaction is always our top priority so you can be sure you will receive the highest quality service. We are Fensa approved and all installations have an insurance backed guarantee for complete peace of mind.

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. Give us a ring on 029 2088 3494 to learn more.


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.


Your label will display the following information:

Top quality products at competitive prices

We're energy efficient

uPVC door and window systems installed in Cardiff and Caerphilly

  • The rating level of A, B or C

  • The energy rating

  • The window U value

  • The effective heat loss due to air penetration

  • The solar heat

Example of UPVC windows with arched top Interior of Folding UPVC windows Example of UPVC conservatory shadow Example of elegant conservatory Close up of UPVC window lock