The E3 mortgage savings program
Energy-efficient mortgage programs recognize that a house costing less to run leaves more income available to service a loan. Guardian's products page carries a video on its E3 Mortgage Savings Program.
The principle
Underwriting looks at what a borrower can afford each month. Utilities are part of that, but conventional underwriting treats them as an unknown. Energy-efficiency mortgage programs bring the expected utility cost into the calculation, so a demonstrably efficient house can support a larger loan or a better ratio.
The mechanism differs by program, and the documentation requirements are the practical barrier: the efficiency has to be demonstrated in a form the lender accepts.
What Guardian publishes
Guardian's products page carries a video on its E3 Mortgage Savings Program. Its E3 document, “Shield E3 System”, is about the building rather than the loan: it pairs the panel envelope with high-efficiency air-to-water heat pumps. The differentiation sheet lists environmental tax rebates among the builder benefits, noting that panels are PHIUS, LEED and Net Zero capable designs.
What Guardian publishes
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Guardian's products page carries a video titled E3 Mortgage Savings Program. Its E3 document describes the Shield™ envelope paired with air-to-water heat pumps and does not describe a mortgage product.
Source · E3 Quotient for Build; Products page videos section
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Environmental tax rebates: panels are Passive House Institute United States, LEED and Net Zero capable designs.
Source · Differentiation sheet
Published by Guardian Structural Technologies. Last updated .
Drafted from our product literature and published building-science sources. Awaiting our technical review. Confirm any figure against the current product documents or ask us before you rely on it in a design.