Professional Appliance Maintenance Services in Newmarket, Aurora, Richmond Hill and the Surrounding Area Cool Tech Appliance Repair has over 30 years of experience in offering fast and reliable appliance maintenance services in Newmarket, Aurora, Richmond Hill and the Surrounding Area. Besides appliance maintenance, we also offer professional repair services to both commercial and residential clients in the York Region. Our experienced technicians specialize in diagnostics and can fix any make or model of refrigerators, air conditioning units, washers, dryers and much more.