Red Line Heating & Cooling came back three times for some minor things that were happening with my furnace. The third time they came back they figured out that there was a lot of debris in the motor of the furnace.

They ended up taking apart the motor and cleaned it all out and put it back together and I haven't had any issues since.

I had them come in twice previously, once to replace a coupling on the water heater and another time to replace the water heater all together. They are polite and courteous and pretty knowledgeable.