AHT Inc. Plumbing & Heating is a full service plumbing and heating contractor serving the Upper Valley region of Vermont and New Hampshire. Our plumbing and heating services are focused on alternative-energy technologies that utilize solar and solid fuel sources for sustainable on-grid or off-grid plumbing and heating solutions. AHT Inc. specializes in comprehensive system design, installation
BLEJ LLP — "We had AHT Inc. replace our heating system, a 1987 vintage 150,000 BTU Power vented propane gas boiler and an 80 gallon