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The air filter slot on this furnace is covered with a magnetic seal.

The air filter slot on this furnace is covered with a magnetic seal.

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The gap between the air filter and the return duct opening has been sealed with tape that will stop air flow but is easily pulled off or cut through when the filter needs to be replaced.

The gap between the air filter and the return duct opening has been sealed with tape that will stop air flow but is easily pulled off or cut through when the filter needs to be replaced.

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An Introduction to ASHRAE Guideline 44

Presentation

Webinar describing ASHRAE guidance for maintaining indoor air quality and protecting occupants from smoke during wildfire and prescribed burn events.

Whole-House Ventilation Strategies for New Homes

Guide

This guide describes how to install a whole-building ventilation system to provide adequate dilution of indoor air contaminants.

Builders Challenge High Performance Builder Spotlight: David Weekley Homes, Houston, Texas

Case Study

Case study describing new home construction in the hot-humid climate, optimizing thermal enclosure, HVAC, water heating and lighting measures.