Pros and Cons of Prescriptive and Performance Paths

The Pros and Cons of
Prescriptive and Performance Paths

Performance Path
(Requires inspections at rough and Final)

PROS	CONS
More thorough inspections that can identify potential problem areas before they become inaccessible	Initially costs more than the prescriptive path for energy compliance
Eligible for Federal 45L Builder Tax Credit ($2,000)	Requires modeling before permitting to ensure home can meet code requirements
Eligible for Xcel ENERGY STAR® New Homes (ESNH) rebate, Black Hills Energy rebate, and other utility provider rebates
More flexibility in selecting insulation and windows
Factors in efficient HVAC systems and appliances and renewable energy generation
Predicts yearly energy costs for homeowners
Generates RESNET HERS® score to calculate home performance, which is useful for sales and marketing
More items inspected
Required in some jurisdictions (Boulder and Boulder County)

Prescriptive Path
(Requires REScheck before permitting, Duct Testing on systems with ductwork outside of conditioned space, and Blower Door Test)

PROS	CONS
Initially cheaper than the performance path	Does not qualify for builder rebates
More straightforward compliance path	No RESNET HERS® Score generated
	Fewer items inspected in house
	Less flexibility when selecting insulation and windows
	No insulation or air sealing inspection

- Charles Manly, Keller Homes

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