Since I had a great experience using Ishpal's (Frontier) service twice previously (humidifier and a fireplace), I contacted him for a quote to replace our furnace. He showed up on time and explained the various options available to us. We took sometime to do our own research and we contacted Ishpal again when we were ready (we went ahead with a Rheem furnace). Ishpal did a great job with the installation and everything went extremely seamlessly/smooth. He cleaned the area really well once he completed the installation and very patiently explained the features/operation of the new furnace to us! Furnace works great! Extremely satisfied! Ishpal is a pleasure to work with and extremely patient and professional! Highly recommended!