Do yourself a favour and avoid Arrow Heating & Air Conditioning at all costs. Our heating wasn't working and this was the company that was listed on our combo unit water boiler (from previous home owners). They incorrectly diagnosed the problem (Chris), charged us for their work even though the main issue of the heating wasn't solved and then said that we should call Direct Energy. Such a headache dealing with these guys and will never call them again. I can assure you that there are much better companies in Toronto to correctly diagnose and fix.