Ken is an exceptional technician! Out for routine inspection and discovered our heat pump was not even working. We had no idea because the gas furnace was keeping us heated. Ken discovered our heat pump had leaked all of our Freon out. Even though it was dark and 38 outside, he stayed till the leak was fixed and our system was running perfectly. Our Lennox is under warranty so there were no charges! Thank you KEN, you always take great care of us!