https://stream.echo6.co/videos/watch/eb5e5a3a-dcd5-465b-9cdd-5da7b4a067db I video blog a lot about HVAC systems because they are such a huge energy user in our HOT Austin Texas climate. In this video my HVAC contractor Bert and I are in the middle of an energy efficiency upgrade and have just replaced the furnace with a sealed combustion 95% efficient gas furnace. This furnace is about 20% more efficient than the old unit it replaced but it's also the only way to install a gas furnace in a sealed unvented spray foamed attic. Let's see some details about this install... -Matt Risinger Wed, 10 Jun 2026 09:52:02 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/eb5e5a3a-dcd5-465b-9cdd-5da7b4a067db All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.