Great customer service! very trustworthy people!! Learn why armstrong plumbing is the right choice for you. How can we make our services more useful for you? Based on years of performance, i have no hesitations in recommending colorado boiler for your equipment needs. It’s such a relief to be able to call upon you in a crisis, and i’ll have no hesitation whatsoever in recommending you. To purchase your new combi boiler online and book in an installation date, simply.