Westisle Heating and Cooling has been servicing my furnace for several years now. The service is great! They are reliable, prompt and professional. They explain what they've found in their inspection. They don't try to upsell services. I trust they will let me know if there's anything serious I need to be aware of, or plan for. This year they fit me in last minute which I really appreciated. And their rates are very reasonable. I highly recommend Westisle Heating and Cooling.