Michael Ormsby<p>Does anyone have recommends for book or website I can use to educate myself on options for upgrading a postwar bungalow from a gas furnace + AC to heat pump(s)? The book I have is OK for basic principles but I’m looking for more what units are available, cost, installation pitfalls.</p><p>I have asthma which is aggravated by the current system blowing dust around summer + winter. Primary motivation is comfort, better energy efficiency would be bonus points. <a href="https://mastodon.art/tags/HVAC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HVAC</span></a> <a href="https://mastodon.art/tags/HeatPump" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HeatPump</span></a> <a href="https://mastodon.art/tags/minisplit" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>minisplit</span></a> <a href="https://mastodon.art/tags/renovation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>renovation</span></a></p>