MacKay installed our 2nd furnace back in 2010 and we called them for installation or our replacement Air Condition in June of 2017. They had the best price in Niagara (on Trane Units) and were able install the unit within 7 days of ordering. Technicians got the job done within 6 hours and displayed high level of workmanship. We had an issue with the circuit breaker tripping, but again they came back at 7 pm to fix the problem and returned as agreed about 4 weeks later to extend the electrical cable to the unit. Again top notch service and we would call on them again.