Mitchell and Tyler did an outstanding job installing our new furnace, water heater and humidifier. They were polite, professional, on-time and, they made sure that we fully understood the scope of the job. They cleaned up thoroughly after completion and spent time explaining how our new system should operate. We were more than pleased with the entire process. Of course, the true test of success is the test of time for the equipment. We have used Markham Heating for our heating and air conditioning needs for many years and it is our intention to continue to have them maintain our system.