We are full service heating, ventilation & air conditioning contractors for all seasons. From our sheet metal shop in Stamford, CT our expert technicians develop and fabricate custom duct-work based on your building project's unique specifications. H. P. Carpenter & Sons' highly trained technicians specialize in installing new indoor air systems, upgrading older air systems, diagnosing and repairing air conditioning or heating problems, and providing your equipment with the seasonal maintenance it needs to continue running long and strong.