SolarDuct™ is a modular rooftop solar air heating system based on the highly efficient and award-winning SolarWall® system. The technology has been specifically engineered for roof settings and for applications in which a traditional wall mounted system is not feasible. More.




The SolarDuct™ PV/T product is an optimally designed PV/thermal cogeneration system, with improved PV efficiency versus typical PV mounting. With a SolarDuct PV/T system, the all-metal SolarWall® panels double as the racking system, while also removing the heat from the back of the PV modules and using it to offset the building's heating load. More.




The SolarWall® system delivers the fastest solar payback on the planet by heating the ventilation air required in commercial and industrial buildings (see other applications). The solar air heating system is building integrated and has been used globally for an extensive variety of customers. SolarWall systems generate up to 6 LEED points and displace a significant amount of C02. More




SolarWall® PV/T cogeneration system produces both heated air & electricity. It combines the high-efficiency SolarWall® air heating technology with PV to create a total energy solution with a payback period that is substantially less than conventional PV. A PV/T system will generate 200-300% more energy than a standalone PV system, which offsets both heating and electricity costs and maximizes CO2 displacement. More.

What is Solar Air Heating?

The SolarWall® technology is a patented solar air heating system that heats building ventilation air using an all-metal perforated collector panel. It delivers one of the fastest energy ROIs possible in the commercial and industrial sector because it substantially offsets the traditional heating load.  The SolarWall system can be used for a variety of uses and applications, from solar air heating large and small buildings, to agricultural and process drying. Architects and engineers enjoy the fact that SolarWall contributes towards LEED points and is a significant source of greenhouse gas displacement. Learn how the SolarWall solar air heating system works.

What is PV/T (PV + Solar Thermal)?

A PV/Thermal system is a total energy system that produces both heat (solar thermal heating) and electricity (by photovoltaic panels) from the same surface area.  Pairing the SolarWall® air collector with PV is a synergistic relationship that significantly shortens the payback period associated with a photovoltaic system, while maximizing the reduction of CO2 emissions possible from the same footprint.

About Conserval Engineering

Conserval Engineering has been delivering custom engineered renewable energy solutions throughout the world for over 30 years.  We are the company that developed and commercialized solar air heating for commercial, industrial, institutional, and agricultural applications. The technology we invented, known as "SolarWall", was praised by the U.S. Department of Energy as being in the “top two percent of energy related inventions”.  As this technology came to define the global solar air heating sector because of its efficiency and return on investment, our new PV/thermal technology also promises to shift the technological paradigm in terms of solar cogeneration systems. Clients have included private and public sector organizations like the US Army, Canadian Government, NASA, Ford, FedEx, Wal-Mart and 3M, as well as over 1000 others on five continents.

Mission Statement

To solar-ize the world's buildings for the benefit of pocketbook and mankind.

SolarWall Videos

Featured Case History

Fort Drum NY SolarWallThe world's largest collection of solar air heated buildings, generating 4MW of thermal energy and displacing 2,000 tons of CO2/year, is now found at the U.S. Military Base of Ft. Drum. More cases.