Furnish and Install 2 2.5 gallon thermal expansion tanks with brackets 1 for each water heater. Customer stated that pressure coming out of faucets was fluctuating. Arrived and tested pressure and pressure was about 60 psi. Noticed that water heaters didn’t have thermal expansion tanks. For the first step, recommended customer to install two thermal expansion tank one for each heater that service different parts of the house. Customer agreed so I installed two new 2 1/2 gallon thermal expansion tank and tested. No leaks were present at this time. Cleaned up work area.