Old House Online's Directory of suppliers and installers of HVAC and retrofit systems for classically-designed or older homes. Specialties include retrofitting older systems for energy efficiency; heating & air conditioning repair; ventilation systems, and more.
Allied Window offers a beautiful, affordable and invisible solution for your bent glass and shaped windows. Allied Window's specialty is creating insulating storm windows that disappear into your shaped openings - matching the shape exactly - from bent glass to odd shapes, sizes and thicknesses – disappearing into your window opening.
Energy Efficient Central Heating, Cooling and Indoor Air Quality Systems for over 35 years. The Hi-Velocity Small Duct System fits where others cannot, removing 30% more moisture from the air than conventional systems, and eliminating hot and cold spots in the home or office.