diff --git a/workflow/energy_rating_index.rb b/workflow/energy_rating_index.rb
index c0c79793b..71b3cc0a4 100644
--- a/workflow/energy_rating_index.rb
+++ b/workflow/energy_rating_index.rb
@@ -413,7 +413,7 @@ def get_eec(system, type, is_dfhp_primary = nil)
     elsif rated_sys.respond_to? :integrated_heating_system_fraction_heat_load_served
       fraction_heat_load_served = rated_sys.integrated_heating_system_fraction_heat_load_served
     end
-    next if fraction_heat_load_served.nil?
+    next if fraction_heat_load_served.to_f <= 0
 
     # Get corresponding Reference Home system
     ref_sys = reg_bldg.hvac_systems.select { |h| h.respond_to?(:htg_seed_id) && (h.htg_seed_id == rated_sys.htg_seed_id) }[0]
@@ -437,7 +437,7 @@ def get_eec(system, type, is_dfhp_primary = nil)
     if rated_sys.respond_to? :fraction_cool_load_served
       fraction_cool_load_served = rated_sys.fraction_cool_load_served
     end
-    next if fraction_cool_load_served.nil?
+    next if fraction_cool_load_served.to_f <= 0
 
     # Get corresponding Reference Home system
     ref_sys = reg_bldg.hvac_systems.select { |h| h.respond_to?(:clg_seed_id) && (h.clg_seed_id == rated_sys.clg_seed_id) }[0]