Honeywell has been designing and producing products at the highest quality for over a hundred years and have been able to build up a substantial amount of reliability in this time. This vast amount of experience means Honeywell are recognised as one of the market leaders, and their high standards keep them at the forefront of the customers minds when purchasing heating products in the future.You can be assured this product has been produced to provide maximum reliability and durability & perfect for use in domestic and light commercial central heating systems.