> I can't find anyone to install one in Los Angeles. If you call a random HVAC company, they may not want to deal with "fussy clients" that want something "fan

> I can't find anyone to install one in Los Angeles. If you call a random HVAC company, they may not want to deal with "fussy clients" that want something "fancy" like an HRV/ERV. Best to look at folks that perhaps try to adhere to building science more. A quick search for the LA area: * https://www.jmsacandheating.com/indoor-air-quality/heat-energy-recovery-ventilators-hrv-erv https://www.jmsacandheating.com/indoor-air-quality/heat-ener... * https://www.aircomfortexperts.com/additional-products/ervs/ https://www.aircomfortexperts.com/additional-products/ervs/ * https://www.azaircond.com/indoor-air-quality/energy-recovery-ventilators/ https://www.azaircond.com/indoor-air-quality/energy-recovery... * https://www.socalclimatecontrol.com/ervs-and-hrvs-energy-efficient-southern-ca/ https://www.socalclimatecontrol.com/ervs-and-hrvs-energy-eff... Or do a dealer search from a manufacturer, e.g.,: * https://broan-nutone.com/en-us/home/dealer-locator https://broan-nutone.com/en-us/home/dealer-locator > Is there a particular climate these are suited for? Any climate. Modern ones can even handle IECC Zones 6 and 7: * https://basc.pnnl.gov/images/iecc-climate-zone-map https://basc.pnnl.gov/images/iecc-climate-zone-map