diff --git a/entrada.py b/entrada.py
index f412a0c..907d884 100755
--- a/entrada.py
+++ b/entrada.py
@@ -9,10 +9,10 @@
 sys.path.append(pyENL_dirpath)
 from solver import solver
 from utils import variables, random_lim, variables_string
+from utils import ajustaUnidades
 from numpy import inf
 from CoolProp.CoolProp import PropsSI as prop
 from CoolProp.CoolProp import HAPropsSI as haprop
-from re import sub
 from time import time
 import optparse
 from pint import _DEFAULT_REGISTRY as pyENLu
@@ -98,11 +98,7 @@ def entradaTexto(ecuaciones, pyENL_timeout, varsObj=None, tol=None, method='hybr
             expresion = expresion.replace('\t','')
             # Capacidad de interpretar pow
             expresion = expresion.replace("^", "**")
-            if "hour" not in expresion:
-                expresion = sub(r'\[([A-z0-9\*{1,2}\/\^)]*)h([A-z0-9\*{1,2}\/\^)]*)]',
-                                    '[\g<1>hour\g<2>]', expresion)
-            expresion = sub(r'\[([A-z0-9\*{1,2}\/\^)]*)°C([A-z0-9\*{1,2}\/\^)]*)]',
-                               '[\g<1>degree_Celsius\g<2>]', expresion)
+            expresion = ajustaUnidades(expresion)
             izq_der = expresion.split('=')
             operandos = ["+", "-", "*", "/", "("]
             # Revisar que no haya operadores incompletos
diff --git a/pyENL.py b/pyENL.py
index faad18c..a641005 100755
--- a/pyENL.py
+++ b/pyENL.py
@@ -35,7 +35,6 @@
 pyENLu.load_definitions(pyENL_units_file)
 from CoolProp.CoolProp import FluidsList, get_parameter_index, get_parameter_information, is_trivial_parameter
 from pyENL_fcns.functions import dicc_coolprop
-from re import sub
 # Cargar ahora interfaz desde archivo .py haciendo conversión con:
 # $ pyuic4 GUI/MainWindow.ui -o GUI/MainWindow.py
 # Icono: QtWidgets.QPixmap(_fromUtf8("GUI/imgs/icon.ico")
@@ -858,11 +857,7 @@ def actualizaVarsTable(self):
                 lowerlim = float(self.varsTable.item(i, 2).text())
                 upperlim = float(self.varsTable.item(i, 3).text())
                 units = self.varsTable.item(i, 4).text()
-                if not "hour" in units:
-                    units = sub(r'([A-z0-9\*{1,2}\/\^)]*)h([A-z0-9\*{1,2}\/\^)]*)',
-                                    '\g<1>hour\g<2>', units)
-                units = sub(r'([A-z0-9\*{1,2}\/\^)]*)°C([A-z0-9\*{1,2}\/\^)]*)',
-                                '\g<1>degree_Celsius\g<2>', units)
+                units = ajustaUnidades(units)
                 comment = self.varsTable.item(i, 5).text()
                 if lowerlim >= upperlim:
                     raise Exception(self.traduccion['El número '] + str(lowerlim) +
diff --git a/utils.py b/utils.py
index e4cee67..196252d 100644
--- a/utils.py
+++ b/utils.py
@@ -549,6 +549,7 @@ def variablesProperties(texto_eqn,vars_ecuacion,posibles):
         if variable_unique in terminos_eqn:
             to_eval = texto_eqn.replace(variable_unique,'')
             to_eval =to_eval.replace("[", "*pyENLu.parse_units('").replace("]", "')")
+            to_eval = ajustaUnidades(to_eval)
             result_var = eval(to_eval)
 
             dic_vars = {variable_unique: {}}
@@ -559,4 +560,17 @@ def variablesProperties(texto_eqn,vars_ecuacion,posibles):
             else:
                 dic_vars[variable_unique]['guess'] = - result_var
 
-    return dic_vars
\ No newline at end of file
+    return dic_vars
+
+def ajustaUnidades(texto):
+    '''
+    Regresa el texto con unidades modificadas para soporte de
+    pyENL, como h para hour y °C para degree_Celsius
+    '''
+    salida = texto
+    if 'hour' not in salida:
+        salida = re.sub(r'([A-z0-9\*{1,2}\/\^)]*)h([A-z0-9\*{1,2}\/\^)]*)',
+                        '\g<1>hour\g<2>', salida)
+    salida = re.sub(r'([A-z0-9\*{1,2}\/\^)]*)°C([A-z0-9\*{1,2}\/\^)]*)',
+                    '\g<1>degree_Celsius\g<2>', salida)
+    return salida
\ No newline at end of file