JAS 3 Heating Cooling Refrigeration

Tenants called JAS 3 HEATING COOLING to get a quote and possible repair the furnace . Technician proceeded to repair the furnace without authorization. Turned out it needed pressure switch which they replaced. Pressure switch part is less than 100 dollars cost and manufacturer says it takes half sn hour to replace . I understand the is service call and diagnosis charge for 110 dollars plus half an hour to replace . The bill shoukd of came out for less than 400 . They billed me 1100 dollars for less than 100 dollar parts. I contacted many other HVAC companies and they affirmed the invoice should been less than 500 dollars .I do not recommend them at all .