Inputs
10 parameters · live recalculation on every change
M³
10m³
100m³ default
1000m³
°C
15°C
25°C default
35°C
%
30%
60% default
90%
°C
20°C
28°C default
40°C
°C
10°C
20°C default
30°C
ⓘ Basis of calculation How it’s computed
1
Measure the room in cubic metres and enter canopy target temperature and humidity.
2
Set the day swing — lights-on and lights-off temperatures — the ΔT the HVAC arm must smooth.
3
Pick the envelope (insulation k-factor) and air change rate; sealed rooms run near 0 ACH.
4
Read the four sized arms: HVAC BTU/h, dehumidifier pints/day, CO2 kg/day, CFM exchange.
5
Check the leaf VPD safety band — green 0.8–1.2 kPa keeps stomata open and transpiration moving.
6
Cost check: cooling kWh × $0.15 plus CO2 kg × $2.00, then raise efficiency (SEER × derates) to cut the bill.
Live output
HVAC Sizing
12027
BTU/h
HVAC Sizing
HVAC 12027 BTU/h · dehumidifier 20 pints/day · CO2 0.16 kg/day · leaf VPD 1.12 kPa · GREEN · canopy balance — open stomata, no stress
Dehumidifier
20
pints/day
CO2 Feed
0.14
kg/day
Leaf VPD
1.12
kPa
Air Exchange
29.4
CFM
Cooling Load
3525
W
Heating Load
2820
W
Running Cost
$14.42
$/day
Mode
climate
Active profile