Skip to main content

Resources

Explore a library of home construction and renovation guidance and easily search through galleries containing hundreds of building science-related photos, drawings, videos, CAD files, case studies, and presentations.

Filter

View Library

Showing 457 - 480 of 621 results:

Image:

These two schematics show the plan-view of the same duct system; the upper schematic shows all supply and return outlets and inlets uncovered for normal operation, and the lower schematic shows them covered before beginning a duct leakage test.

These two schematics show the plan-view of the same duct system; the upper schematic shows all supply and return outlets and inlets uncovered for normal operation, and the lower schematic shows them covered before beginning a duct leakage test.
Image:

This “high static ducted cassette” heat pump system is similar to a traditional centrally ducted system, serving several areas of a home from one indoor unit

This “high static ducted cassette” heat pump system is similar to a traditional centrally ducted system, serving several areas of a home from one indoor unit
Image:

This air register has noticeable gaps between it and the floor; use canned spray foam to fill in the gaps.

This air register has noticeable gaps between it and the floor; use canned spray foam to fill in the gaps.
Image:

This bath fan duct actually has a termination vent attached at the end of the duct but the vent is sitting on the attic floor instead of attaching through the roof so humid air is exhausting into the attic

This bath fan duct actually has a termination vent attached at the end of the duct but the vent is sitting on the attic floor instead of attaching through the roof so humid air is exhausting into the attic
Image:

This bath fan is ducted through the roof but the ducting is so excessively long that air flow is likely to be very poor

This bath fan is ducted through the roof but the ducting is so excessively long that air flow is likely to be very poor
Image:

This Central Fan Integrated Supply (CFIS) duct is undersized and kinked, limiting required airflow This Central Fan Integrated Supply (CFIS) duct is undersized and kinked, limiting required airflow

This Central Fan Integrated Supply (CFIS) duct is undersized and kinked, limiting required airflow This Central Fan Integrated Supply (CFIS) duct is undersized and kinked, limiting required airflow
Image:

This constant airflow regulator (CAR) has been fouled by aerosolized sealant because it was not covered while the ducts were being sealed with the aerosolized acrylic sealant.

This constant airflow regulator (CAR) has been fouled by aerosolized sealant because it was not covered while the ducts were being sealed with the aerosolized acrylic sealant.
Image:

This constant airflow regulator (CAR) has been fouled by deposition of aerosolized sealant because it was not protected during duct sealing

This constant airflow regulator (CAR) has been fouled by deposition of aerosolized sealant because it was not protected during duct sealing
Image:

This dropped soffit runs the length of the house providing a convenient place to locate one trunk duct with several very short side ducts that supply heat and cooling to most rooms of the house.

This dropped soffit runs the length of the house providing a convenient place to locate one trunk duct with several very short side ducts that supply heat and cooling to most rooms of the house.
Image:

This duct became disconnected from the trunk duct because the duct take-off was poorly installed.

This duct became disconnected from the trunk duct because the duct take-off was poorly installed.
Image:

This duct board seam failure is due to the failed tape adhesive.

This duct board seam failure is due to the failed tape adhesive.
Image:

This duct take-off collar had become loose so the sheet metal tabs are being re-bent to make the collar more secure.

This duct take-off collar had become loose so the sheet metal tabs are being re-bent to make the collar more secure.
Image:

This ducted mini-split heat pump was installed in the unvented, conditioned attic and ducted with short duct runs to several nearby rooms.

This ducted mini-split heat pump was installed in the unvented, conditioned attic and ducted with short duct runs to several nearby rooms.
Image:

This exhaust fan duct is not properly attached to the roof vent so most of the moist bathroom exhaust air will vent into the attic instead of out through the roof

This exhaust fan duct is not properly attached to the roof vent so most of the moist bathroom exhaust air will vent into the attic instead of out through the roof
Image:

This exhaust fan duct is problematic for several reasons: it ends in the attic without being vented through the roof, it uses corrugated plastic pipe instead of metal pipe, and it is not well supported with a sharp bend that restricts air flow

This exhaust fan duct is problematic for several reasons: it ends in the attic without being vented through the roof, it uses corrugated plastic pipe instead of metal pipe, and it is not well supported with a sharp bend that restricts air flow
Image:

This exhaust fan duct is properly insulated and is properly vented through the roof

This exhaust fan duct is properly insulated and is properly vented through the roof
Image:

This exhaust fan duct opens into the attic rather than exiting through the roof and mold has begun to form on the underside of the deck sheathing and on the rafter due to the moist air exiting the duct

This exhaust fan duct opens into the attic rather than exiting through the roof and mold has begun to form on the underside of the deck sheathing and on the rafter due to the moist air exiting the duct
Image:

This flex duct is much longer than it needs to be; the extra loops greatly decrease air flow in the duct.

This flex duct is much longer than it needs to be; the extra loops greatly decrease air flow in the duct.
Image:

This Habitat for Humanity builder ordered roof trusses with a 2-foot by 2-foot notch next to the center post then lined the cutout with rigid foam to form an insulated central duct chase to bring the heating and cooling ducts within the conditioned space.

This Habitat for Humanity builder ordered roof trusses with a 2-foot by 2-foot notch next to the center post then lined the cutout with rigid foam to form an insulated central duct chase to bring the heating and cooling ducts within the conditioned space.
Image:

This home’s ultra-efficient ground-source heat pump provides hot water for space heating as well as domestic hot water for the 50-gallon storage tank.

This home’s ultra-efficient ground-source heat pump provides hot water for space heating as well as domestic hot water for the 50-gallon storage tank.
Image:

This is a take-off collar for connecting a round metal duct to a flat sheet metal trunk duct.

This is a take-off collar for connecting a round metal duct to a flat sheet metal trunk duct.
Image:

This is an example of an insulation pattern for rigid metal ducts that has been measured and cut in a comfortable location before being carried into the attic.

This is an example of an insulation pattern for rigid metal ducts that has been measured and cut in a comfortable location before being carried into the attic.
Image:

This louvered vent cap works well for clothes dryer vent ducts because it has no screening that could trap dryer lint

This louvered vent cap works well for clothes dryer vent ducts because it has no screening that could trap dryer lint
Image:

This plan view of a multifamily building shows how a leaky central exhaust system can create negative pressure zones, pulling unconditioned outside air or humid inside air into the service shaft and wall cavities

This plan view of a multifamily building shows how a leaky central exhaust system can create negative pressure zones, pulling unconditioned outside air or humid inside air into the service shaft and wall cavities