I wanted to update you on the chimney cowl I purchased from you. In short, it worked. I’ve had an oil stove installed in the house for about 8 years, and this is the first winter it worked correctly. Prior to installing the cowl we could only turn the stove up to about 40 percent of maximum before it would start becoming unstable, we had tried several different cowls. My house is old by North American standards(circa.1884), with little insulation, and large about 3500 square feet. When the furnace is used to heat the house it uses about 300-400 litres of oil a week, thankfully as bad as the weather was this winter we only uses the furnace for about 10 days, typically we use it for two months. The cowl paid for itself in a season.
The quality of workmanship and materials is high. I would not hesitate to recommend it to anyone.