waterheater.rb in urbanopt-cli-0.9.1

- old
+ new

@@ -1529,10 +1529,14 @@
     if not water_heating_system.jacket_r_value.nil?
       skin_insulation_R = 5.0 # R5
       if water_heating_system.fuel_type.nil? # indirect water heater, etc. Assume 2 inch skin insulation
         skin_insulation_t = 2.0 # inch
       elsif water_heating_system.fuel_type != HPXML::FuelTypeElectricity
-        if water_heating_system.energy_factor < 0.7
+        ef = water_heating_system.energy_factor
+        if ef.nil?
+          ef = calc_ef_from_uef(water_heating_system)
+        end
+        if ef < 0.7
           skin_insulation_t = 1.0 # inch
         else
           skin_insulation_t = 2.0 # inch
         end
       else # electric