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Right - Spray foam insulation has been sprayed onto the underside of the sloped roof and the gable end wall to provide a sealed, insulated attic for housing the HVAC ducts

Unvented, Insulated Crawlspaces

Guide describing methods for insulating an unvented crawlspace or conditioned basement with rigid foam on the interior side of the walls to provide an insulated space for HVAC equipment.

Below Deck Spray Foam Insulation for Existing Roofs

Guide describing how to add spray foam insulation to the underside of the existing roof deck as part of the conversion of a vented attic to an unvented, insulated attic.

Condensing Boilers

Guide describing condensing boilers and hot water heat distribution systems used for home heating.

Gas-Fired Boilers

Guide describing gas-fired boilers and hot water heat distribution systems used for home heating.

Gas-Fired Tankless Water Heaters

Guide describing the installation of a tankless hot water heater to provide domestic hot water that is heated on demand without the standby losses associated with tank storage water heaters.