Concerning the share of the households, public and commercial buildings in the final energy consumption worldwide, and related near and midterm energy saving targets in many - the most of countries, there is urgent need to develop commercial "industrial" scale energy refurbishment (buildings architecture and construction refurbishment technologies accompanied with corresponding HVAC systems engineering). It is hard to expect that required deep energy refurbishment, planned by the corresponding NEEAP - National Energy Efficiency Action Plans (prepared in most of the countries around the world), can be realized if there are missing developed "industrial" scale buildings architecture and construction refurbishment technologies and corresponding integrally harmonized HVAC/PV/other RES systems and engineering technologies developed and validated based on the relevant R&D results. To reach predicted energy saving targets, is to be developed, for all types of buildings "Energy Refurbishment Industry" - Buildings Refurbishment/HVAC/RES industry-Commercialized integrated refurbishment design and engineering as a whole integrated process. Developed, mature, commercially available on the market, pre-constructed HVAC/RES/HP and/or HVAC/RES/DHS/HP systems and unified retrofitting construction works as well as corresponding mechanical and electrical subsystems would eliminate important technical and technological barriers to spreading deep energy refurbishment projects conducted integrally with decentralized solar, wind, ground or groundwater source HP implementation at the building level, at its yard and/or at the municipal level. In addition, development of the specific hardware and software within the building/HVAC retrofitting system can directly increase competitiveness of related HVAC, heat pumps and other RES systems, including renovated/refurbished buildings and smart-grid optimal intelligent control systems industry.