My 6 year old furnace decided it was not going to work with the Nest smart thermostat this week. Thehouse temperature dipped below 16 C and we had to use small heater to keep warm. Steve responded within 30 min of my call Thursday and spent the next two days trouble shooting and reapired the furnace. Very professional, knowledgeable, honest, effective and fair price compared to the other contractors I dealt with. Much appreciated!