The Impact of Hard Water in Marin
Sediment in Tank Heaters
The minerals in Marin’s water supply create a layer of sediment at the bottom of your storage tank. This forces the burner to work harder to heat through the sediment layer, wasting energy and causing the tank to overheat and fail years ahead of schedule.
Sediment buildup is the #1 cause of premature tank failure in Marin
Scale in Tankless & Heat Pumps
Tankless water heaters and heat pump models have intricate internal heat exchangers that scale up quickly in Marin’s hard water. Annual descaling is essential to maintain flow rates, efficiency, and manufacturer warranty compliance.
Annual descaling maintains efficiency
Catch Problems Early
Annual maintenance isn’t just about cleaning — it’s a systems inspection. We check T&P relief valves, gas connections, anode rods, and pressure levels. Catching a failing T&P valve or a failing expansion tank before they cause damage saves you thousands.
Prevent expensive water damage
Our Marin Water Heater Maintenance Checklist
Tank Flush & Sediment Removal
We flush your storage tank completely to remove mineral sediment. For tankless and heat pump units, we descale the heat exchanger using a citric acid flush.
Safety Component Testing
We test the temperature and pressure relief valve, inspect the expansion tank, check all connections for leaks, and verify proper venting and gas pressure on gas units.
Anode Rod & Filter Service
We inspect and replace the sacrificial anode rod if needed — this is what prevents your tank from corroding from the inside. We also clean filters on tankless and heat pump models.
Performance Check & Report
We verify the unit is heating to the correct temperature, check for any error codes on smart units, and provide a written service report documenting what we found and any recommendations.
Model-Specific Expertise
Water Heater Maintenance FAQs
How often should I flush my water heater in Marin?
Annually. Marin’s water is harder than most Bay Area water, so sediment accumulates faster. Standard guidance says every 1-2 years, but in Marin, once a year is the right interval.
Can flushing actually extend my water heater’s life?
Yes. A well-maintained tank heater should last 12-15 years. Without flushing, Marin’s hard water can destroy the tank in as little as 7-8 years. The cost of annual maintenance is a fraction of an emergency replacement.
Do I need annual service if my water heater is new?
Yes, especially for heat pump and tankless units — most manufacturers require annual professional service to maintain the warranty. We’ll document the service visit so you have proof of compliance.
What does a maintenance visit cost?
A standard tune-up runs $150-250 depending on the unit type. Tankless descaling takes longer and costs more. Contact us for a specific quote based on your model.