441
What industry secret are you aware of that most people aren't?
(programming.dev)
A loosely moderated place to ask open-ended questions
Search asklemmy ๐
If your post meets the following criteria, it's welcome here!
Looking for support?
Looking for a community?
~Icon~ ~by~ ~@Double_A@discuss.tchncs.de~
Building HVAC engineering (equipment sizing, ducting design, etc.) has been largely handwavy bullshit for a very long time and only recently has moved towards any sort of precision. Not uncommon to find boiler plants that are 3-4 times the maximum heating load in the winter, or fans running at 100% 24/7 when code only requires half of that.
Costs just get passed on to tenants so there was never much motivation to do better, the only reason building owners are moving now is because of government regulation and incentive programs.
I work in building science. It's obscene how little actual design and quality control goes into residential homes.
The typical design is just one step above being illegal, and people are often scared off of doing anything more than that by the threat of increased cost. However, they don't realize that they pay for it either way; either on their mortgage, or on utilities. Only one of those you can actually own in the end.
So how does a homeowner fix it? The duct work is already in, so is it just about choosing more wisely when replacing the furnace/ac/heat pump?
It starts early in the design process. But at that stage, it would be best to pause installation, have a mechanical engineer do the mechanical design (including equipment selection) based on an energy model and install the recommended equipment.