Model Reference:: 8-zone-hr91-modulation-pack
Honeywell Home evohome 8 Zone HR91 Modulation Pack
Honeywell Home evohome 8 Zone HR91 Modulation Pack | ErP Class 8 | Honeywell Home evohome is an ErP Class 8 product, meaning when it is installed with an OpenTherm boiler with 3 or more heating zones it is one of the most energy efficient controls available to buy.