System Number | System Name | Fan Control | Heating Source | Cooling Source | Sefaira Equivalent | Sefaira Notes |
1 | PTAC | CV | Fossil Boiler | Direct Expansion | 'Packaged Terminal Air Conditioner' | Heating Hot Water Source will be Gas Fired Boiler by default |
2 | PTHP | CV | Electric Heat Pump | Direct Expansion | 'Packaged Terminal Heat Pump' | |
3 | PSZ-AC | CV | Fossil Furnace | Direct Expansion | coming soon! | |
4 | PSZ-HP | CV | Electric Heat Pump | Direct Expansion | coming soon! | |
5 | PVAV w/reheat | VAV | Fossil Boiler | Direct Expansion | 'Packaged Rooftop VAV w/ Reheat' | Heating Hot Water Source will be Gas Fired Boiler by default |
6 | PVAV w/PFP boxes | VAV | Electric Resistance | Direct Expansion | 'Packaged Rooftop VAV w/ Reheat' |
Water-side >Heating Hot Water Source > Electric Boiler Air-side > Zone Terminal Unit > Terminal Type > Fan Powered VAV Box |
7 | VAV w/reheat | VAV | Fossil Boiler | Chilled Water | 'VAV w/ Central Plant' | |
8 | VAV w/PFP boxes | VAV | Electric Resistance | Chilled Water | 'VAV w/ Central Plant' |
Water-side >Heating Hot Water Source > Electric Boiler Air-side > Zone Terminal Unit > Terminal Type > Fan Powered VAV Box |
9 | SZ VAV | VAV | Fossil Boiler* | Chilled Water | 'VAV w/Central Plant' | match 'proposed design' heat source to that in systems |
10 | Heating & ventilation | CV | Electric Resistance | n/a | 'Heating & Ventilation' | Change Heating Hot Water Source to Electric Boiler in Water Side input tab. |
11 | Heating & ventilation | CV | Fossil Furnace | n/a | 'Heating & Ventilation' | Heating Hot Water Source will be Gas Fired Boiler by default |
Just a note for systems 3 and 4. You can use the CAV system if you project only has one zone for systems 3 and 4. We're working on multi-zone CAV. If your project has lots of zones you'll probably get an over-estimate of your energy if you try CAV compared to the LEED Baseline which expects a single CAV unit per zone.
I see that it's been a few months since this was last updated. Is there an ETA on System 3/4? It is a system I use frequently and have to try and approximate with System 1