If your shower turns cold midway or your energy bill is creeping up, the first thing you check is your hot water system. Is it time to replace it, or should you get a new one with a longer lifespan?
To make the right decision, you need to know how long a water tank should last. In this post, we will run you through the average lifespan of different hot water tanks, signs that indicate it’s time for a replacement, and how to extend your hot water system’s lifespan.
How Long Do Different Hot Water Systems Last?
Not all hot water systems are the same; some last longer than others. However, the type of your hot water system is not the only factor that keeps it running for long, regular maintenance also comes into play. Here’s what you can expect from different types:
Gas Hot Water Systems (8–12 years)
Most households have gas hot water systems because they heat water quickly and work well with off-leak energy plans. Their average lifespan is 8 to 12 years, but they can break earlier than their life expectancy if sediment builds up in the tank or if you don’t replace the anode rod (which helps prevent rust) on time.
Electric Hot Water Systems (10–15 years)
You should expect electric hot water systems to last 10 to 15 years. With regular servicing, you can extend their lifespan.
Solar Hot Water Systems (15–20 years)
Solar hot water systems last the longest, 15 to 20 years. However, prolonged weather exposure can reduce their efficiency. Regularly maintain the collector panels and booster system (if installed) to keep the solar hot water system running for long.
Tankless (Instant) Water Heaters (20+ years)
Tankless (or on-demand) water heaters last 20 years or more. As it heats up water instantly rather than storing it in a tank, there is no risk of sediment buildup. They will function well if you replace small components when needed.
Signs It’s Time to Replace Your Hot Water System
- Rust-coloured water: One clear sign is rusty water. When the inside of your tank is corroded, the hot water running through your taps will appear brown.
- Fluctuating water temperature: If water fluctuates between too hot and too cold, it shows your thermostat needs an inspection.
- Leaks around the tank: Water pooling around the base of your hot water system usually signals internal failure.
- Unusual noises: Rumbling, popping, or banging sounds can indicate sediment buildup, which affects the efficiency.
- Higher energy bills: The older your water system is, the harder it will be to heat up water, racking up the replacement cost and energy bills.
What if you ignore the signs? It will lead to water system failure, usually at the worst possible time.
How to Extend the Life of Your Hot Water System
Maintenance is one way to avoid replacement for as long as you can. Regularly taking care of your hot water system will extend its lifespan.
Flush the tank yearly
Sediment buildup shortens your hot water system’s life. Drain and flush the tank once a year.
Check and replace the anode rod
This small metal rod prevents rust inside your tank. Replace it every 3–5 years to extend its life.
Inspect the pressure relief valve
This valve prevents dangerous pressure buildup. Test it every six months to maintain its performance and safety.
Insulate your tank and pipes
Add insulation to maintain water temperature, reduce strain on your system and save energy.
Schedule professional servicing
A plumber can spot and fix small issues before they turn into costly problems.
Get Help To Stretch the Lifespan of Your Hot Water System
Hot water systems can work perfectly for years if you regularly inspect and maintain them. Be vigilant and replace your hot water system before it fails completely. If there is something that needs a professional plumber’s attention, get their help without delay.
Reach out today for hot water system repair or replacement from trained and experienced plumbers in Adelaide.