We had Britain Mechanical replace an AC unit and water tank (with on-demand tank). Both were installed on time and the work was well above what most contractors would do. Not only did they complete this work on time and very professionally, Jim identified problems with furnace installation and shortcomings of existing duct work. They fixed furnace issues, expanded some insufficient ducts, and installed new ducts. They did a great job. Furnace has never worked better, house is much more comfortable, temperature differences between levels is not detectable anymore. Hot water tank is perfect, never experienced a shortage of hot water since it was installed even if dishwasher, washer and showers running at the same time. I've worked with many trades people for HVAC installation and repair in the past. None are as good as Jim and his team at Britain Mechanical. They really set a standard that I doubt many can satisfy. Very highly recommended.