home_energy_score_json_schema / systems / hvac / hvac_item

Heating

Type: object
Additional Properties Allowed: False

Property	Type	Required	Format	Title
type	string
fuel_primary	string
efficiency_method	enum
year	integer
efficiency	number
efficiency_unit	enum

allOf Requirement

Conditional Validation

if true	validate
efficiency_method exists AND efficiency_method is shipment_weighted	year is present AND efficiency is not present efficiency_unit is not present
efficiency_method exists AND efficiency_method is not shipment_weighted	year existsefficiency_method is user
type is none	fuel_primary is not present efficiency_method is not present year is not present efficiency is not present efficiency_unit is not present
type is not none	fuel_primary is present
type is one of [central_furnace, wall_furnace, boiler] AND fuel_primary is electric	efficiency is not present efficiency_unit is not present efficiency_method is not present year is not present
type is one of [central_furnace, wall_furnace, boiler] AND fuel_primary is not electric	efficiency_unit is afue AND efficiency is minimum value of 0.6, maximum value of 1 AND fuel_primary is one of [natural_gas, lpg, fuel_oil]
type is one of [heat_pump, mini_split]	efficiency_unit is one of [hspf, hspf2] AND efficiency is minimum value of 6, maximum value of 20 AND fuel_primary is electric
type is gchp	efficiency_unit is cop AND efficiency is minimum value of 2, maximum value of 5 AND fuel_primary is electric AND efficiency_method is user
type is baseboard	efficiency is not present efficiency_unit is not present efficiency_method is not present year is not present
type is one of [wood_stove]	efficiency_unit is not present efficiency is not present efficiency_method is not present year is not present

type

Heating equipment type

• is required
• Type: string

One Of

Constant: none

Constant: central_furnace

Constant: wall_furnace

Constant: boiler

Constant: heat_pump

Constant: baseboard

Constant: gchp

Constant: mini_split

Constant: wood_stove

fuel_primary

Primary heating fuel

• is not required
• Type: string

One Of

Constant: natural_gas

Constant: lpg

Constant: fuel_oil

Constant: electric

Constant: cord_wood

Constant: pellet_wood

efficiency_method

Method to determine heating efficiency

• is not required
• Type: enum

Value
user
shipment_weighted

year

Year equipment was manufactured (only used if efficiency_method is shipment_weighted)

• is not required
• Type: integer

Minimum Number: 1970

efficiency

• is not required
• Type: number

Comment: Additional requirements for this property apply based on the heating system type

efficiency_unit

• is not required
• Type: enum

Value
afue
cop
hspf
hspf2

Comment: Additional requirements for this property apply based on the heating system type