Build Show Lecture Notes

Introduction

• Focus on improving energy efficiency and indoor air quality in existing homes.
• Discuss upgrades for budgets of $1,000, $5,000, and $10,000.

Upgrades for $1,000

Energy Audit

• Consider hiring a certified energy auditor (Resnet or BPI).
• Can cost from a few hundred to under $1,000 depending on house size.
• A blower door test is recommended for understanding energy performance.

Indoor Air Quality Improvements

1. Install a Pleated Media Air Filter

   • Upgrade from 1-inch filters to a 4-inch pleated media filter.
   • Aim for MERV 11 or 13 for better filtration.
   • Costs typically a few hundred dollars.

2. Standalone Air Purifiers

   • Invest in high-quality air purifiers (IQ Air recommended).
   • Position near HVAC return or in bedroom for best results.
   • Must consider airflow and noise levels.

3. Dehumidifier (if in humid areas)

   • A 70-pint plug-in dehumidifier can improve air quality.
   • Reduces mold and allergens, typically costs $200-300.

Upgrades for $5,000

Implement Energy Audit Recommendations

• Focus on air sealing and insulation improvements.
• Insulation 2.0: Prioritize air sealing, then add insulation.

Duct Sealing

• Especially important for houses with ducts in unconditioned spaces.
• Consider Aeroseal for sealing ductwork leaks.
• Duct blaster tests can identify leakage levels.

HVAC System Enhancements

• Consider adding a dedicated dehumidifier.
• Upgrade to better air filtration systems (e.g., MERV 16 filters).

Upgrades for $10,000

Major Improvements

1. Aeroseal and AeroBarrier

   • Use AeroBarrier for sealing air leaks in existing homes.
   • Requires the house to be empty; aerosolized caulking seals leaks.

2. Replace HVAC System and Ductwork

   • New systems can improve efficiency and air quality.
   • Replace old ductwork to avoid contamination and improve airflow.

3. Mini Split Systems

   • Convert areas with temperature extremes to mini split systems.
   • Options include wall-mounted or ceiling cassette units.

Conclusion

• Upgrades can significantly enhance energy efficiency and indoor air quality.
• Engage with the Build Show for more content and resources.
• Encourage audience interaction through comments and subscriptions.