Specification History

SWS Version Created Specification ID Title Specification Objective Supporting Materials Rationale Status
Version 2025 29/09/2023 - 13:54 7.0302.2b Equipment selection

Select a system that:

is rated 0.70 UEF or better

includes a low nitrogen oxide burner

fits in the installation space with required clearances

provides sufficient hot water for the home and occupants

For Manufactured Housing only:

Select a system that:

is listed and labeled for installation in Manufactured Homes

drafts all its combustion air from outside the dwelling

fits in the installation space with required clearances

provides sufficient hot water for the home and occupants

Select safe, durable, and properly sized water heater

 The primary issue is that Energy Star DWH are almost all "on-demand" or instantaneous, rather than storage tank and therefore are cost prohibitive and often not practical for the installation space. Committee concurs with suggestion to go with .70 for SF and MF only. Committee also identified a need to modify the specification for MH, to remove the energy star requirements and low NOX burner as these are not available for MH. We will need to separate this spec from the others and just leave for MH. Red Line
Version 2020 14/08/2020 - 14:28 7.0302.2b Equipment selection

Select a system that:

is ENERGY STAR certified, equivalent, or better

includes a low nitrogen oxide burner

fits in the installation space with required clearances

provides sufficient hot water for the home and occupants

Select efficient, durable, and properly sized water heater

 Black Line
Version 2020 14/08/2020 - 14:28 7.0302.2b Equipment selection

Select a system that:

is ENERGY STAR certified, equivalent, or better

includes a low nitrogen oxide burner

fits in the installation space with required clearances

provides sufficient hot water for the home and occupants

Select efficient, durable, and properly sized water heater

 Black Line