WATER HEATERS & VALVES
Water heater expansion tank service in Roswell
Water heater expansion tank service in Roswell and North Metro Atlanta. Heating water makes it expand. In a closed system with a PRV or a check valve at the main, that expansion has nowhere to go, so the pressure climbs until something gives. The expansion tank gives it somewhere to go. Tell us what is dripping, banging or failing. Call 770-597-4141.
Signs you need water heater expansion tank service
- The relief valve on the water heater drips after each heating cycle.
- Pressure spikes when the water heater runs and settles afterwards.
- The existing expansion tank is leaking, rusted or waterlogged.
- A new water heater is going in and the old system had no tank.
- The tank is heavy and full when you tap it: call before blaming the heater.
How we diagnose it
- 1Check the whole pressure pictureIncoming pressure, the PRV, the relief valve and the heater itself. A pressure symptom is not proof the tank is at fault; we test before we blame it.
- 2Test the tank on the wallA sound tank holds air on one side and water on the other. A waterlogged one is full of water and does nothing. We check it rather than guess.
- 3Size it and set itThe tank is sized to the water heater and the incoming pressure, installed at the heater, and the system checked afterwards. Price first, as always.
Your likely options
- Method
Replace a failed tank
What it doesThe old tank comes off, a new one sized for the heater goes on, and the relief valve is checked to confirm the dripping stops.
When it applies- a tank that is leaking, rusted through or full of water.
- Method
Add a tank to a closed system
What it doesA house with a PRV or check valve and no expansion tank gets one installed and the pressure rechecked once the heater has cycled.
When it applies- relief valve dripping with no tank on the system.
- Method
Include it with a new heater
What it doesWhen a water heater is replaced, the tank is sized to the new unit and installed with it, listed as its own line in the scope.
When it applies- any heater replacement on a closed system.
What it costs
A visit to look at the problem. We tell you on the phone, before we schedule, whether that visit has a charge and what it is.
- Tank size matched to the water heater.
- Replacing a tank versus adding one for the first time.
- Whether the PRV or relief valve needs work at the same time.
A written scope and price for the repair, before we start. No work beyond that scope without your OK.
Relief valve dripping? Check the tank first
Tell us what the heater and the relief valve are doing. We check the pressure, the tank and the valve, and quote what is wrong.
Water heater expansion tank service questions
Does every water heater need an expansion tank?
Only a closed system does: a PRV or check valve at the main stops expansion from pushing back toward the street. We check whether yours is closed rather than assume.
Will a new tank fix my pressure problem?
If the tank was the problem, yes. If the PRV has failed or the incoming pressure is too high, the tank alone changes nothing. We test the system before selling you a tank.
Is the tank included when you replace a water heater?
It is listed as its own line in the scope, so you see whether it is in and what it costs. Nothing is assumed in either direction.
Do you charge to come out and look?
We tell you on the phone, before we schedule, whether the visit has a charge and what it is.
How soon can you come?
Call and we tell you straight; it depends on the day. For an active leak or backup, call rather than sending the form.
