Can anyone please explain to me why my prices change by about 25-35% on almost a daily basis. How is a heat repair lead average around 9.17 one week and 15.00 the next. Why is there a fuel source/type option for AC jobs listed but not for Heat??? AC has one fuel source ELECTRIC!! Heat has multiple fuel sources. Yet no option for the customer to choose. Insane. Other than those two complaints Thumbtack has given my HVAC company a 50% boost in revenue since July 9 th.