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In this episode of The Heat Pump Podcast, hosts Ed Smith and Eric Fitz sit down with HVAC experts Alex Meaney and Nate Adams to discuss the building science, heat pump sizing, HVAC design, dehumidification, rebates, manufacturer data, the challenges of industry regulations, and a whole lot more. 

Alex and Nate are two of the most experienced and brilliant folks in building performance, home retrofits, and HVAC system design. Alex and Nate come at things from different perspectives, and what unfolds is a fascinating discussion at the bleeding edge of building science., Alex and Nate share valuable knowledge on load calculations, heat pump rebates, efficiency metrics, and the real world challenges of transitioning to all electric homes. They also discuss common mistakes in heat pump installations, the role of data in HVAC advancements, and the limitations of current efficiency standards. Whether you're an HVAC contractor, energy consultant, or homeowner interested in heat pumps, this episode provides thought provoking discussions and actionable insights for navigating the evolving world of heating and cooling.

Key Takeaways:

• Why proper heat pump sizing is crucial and how incorrect sizing impacts heating, cooling, and dehumidification.
• The challenges of balancing latent (moisture removal), sensible (cooling), and heating loads in heat pump systems.
• How outdated efficiency metrics like SEER (Seasonal Energy Efficiency Ratio) fail to account for real-world performance.
• How rebates can lead to perverse incentives and outcomes. 
• Why the lack of manufacturer performance data is a real risk to homeowner comfort.
• Why over-reliance on computer models can lead to poor HVAC design decisions and how field data should drive future improvements.
• Exciting trends on the horizon for HVAC design.

Episode Breakdown with Timestamps:

[02:34] - Introduction and Guest Overview

[03:09] - Guest Introductions and Backgrounds

[04:20] - Areas of Agreement in HVAC Design

[06:55] - Communicating Equipment and Dehumidification

[10:19] - Problems with Efficiency Ratings (SEER, EER, and Latent Performance)

[18:18] - Temperature vs. Humidity for Comfort

[22:59] - The Debate: Sizing for Heating vs. Cooling

[30:18] - The Impact of Building Infiltration on HVAC Performance

[42:22] - The Future of HVAC System Design

[51:33] - Closing Thoughts and Advice for HVAC Contractors

Connect with the Guests:

1. Alex Meaney

LinkedIn: https://www.linkedin.com/in/alex-meaney-62a6a248/ 

Website: https://www.meanhvac.com/ 

Facebook: https://www.facebook.com/alex.meaney.35 

1. Nate Adams

LinkedIn: https://www.linkedin.com/in/natethehousewhisperer/ 

Website: https://www.natethehousewhisperer.com/ 

Instagram: https://www.instagram.com/natethehousewhisperer/?igsh=bXNyeTAwNGkybWk4# 

Follow the Hosts

Ed Smith: https://www.linkedin.com/in/ed-smith-5aa8716

Eric Fitz: https://www.linkedin.com/in/ehfitz/

Amply Energy Website: https://www.amply.energy/

Amply Energy YouTube: https://www.youtube.com/@amplyenergy

Amply Energy Facebook: https://www.facebook.com/amplyenergy

Amply Energy Instagram: https://www.instagram.com/amply_energy/