Good day!
To complete your assignment, I would like to see your building plans.
I will be able to perform calculations of ventilation, air conditioning, heating for all rooms in which engineering systems are needed.
Then, after understanding that your house has the necessary energy (electricity, hot water), a place for the location of equipment for engineering systems, a place for the location of pipelines and air ducts, I can make drawings.
All design stages will be agreed with you. Location of air distribution devices, air duct sections, pipe diameters, etc.
When I see the floor space, I’ll tell you exactly how long it will take.
On my page you will find many examples of my projects.
I hope you choose a professional to eliminate errors at the design stage.
A lot of intermediaries on this site.