I HIGHLY recommend this company. They installed central heat and air into my historic home in four days and I couldn’t be happier. Jason, the job supervisor, was accommodating, careful and competent. I trusted him to cut vents into my untouched plaster ceilings and if we discussed a vent would go in a certain place and he had to cut it one inch from where we had agreed, he got my ‘ok’ first. And believe it or not each evening when they left, you would never know my home was under construction. They cleared and cleaned everything! It was a 6 man job because they also replaced all the knob and tube wiring in the attic. Although not the cheapest estimate, we went with our gut and hired Calvert. I feel I got my money’s worth and then some. They also recommended an artisan plaster guy, Aston Hill of Patchworks, a 2nd generation plaster man who plastered the hole which the large, old furnace left like an artist. The guys on my AAA Calvert job were Jason, Taylor, Quentin, Mannie, Jeff & Eddie. Lovely guys. Great work. TJ, the owner, came on the last day to inspect the work. Lauri and Thomas, who set up the job, were thorough and available for all my needs and concerns.