Hot water is something most homeowners don’t think about — until it runs out or the energy bill arrives. In many Des Moines homes, water heating accounts for a significant portion of monthly utility costs, especially during Iowa’s long winters when incoming water temperatures drop dramatically.
Holt Plumbing & Heating, Inc. has proudly served the greater Des Moines area for decades, providing reliable plumbing, heating, and cooling solutions backed by exceptional customer care and craftsmanship. If you live in Des Moines, West Des Moines, Urbandale, Waukee, Ankeny, or Clive, improving your water heater’s efficiency can lower your energy bills while extending the life of your plumbing system.
Below are practical, homeowner-friendly steps to improve performance and reduce unnecessary energy waste.
Why Water Heating Costs More in Iowa
Iowa’s climate plays a major role in water heater performance.
During winter months:
- Incoming groundwater temperatures are significantly colder
- Your water heater must work harder to reach desired temperatures
- Longer heating cycles increase energy use
Add in Iowa’s hard water conditions — which contribute to sediment buildup — and efficiency can decline even faster without regular maintenance.
Understanding these regional factors helps you take smarter steps toward savings.
Lower the Thermostat Setting
Most water heaters are set to 140°F by default. Lowering the temperature to 120°F can reduce energy consumption without sacrificing comfort.
Benefits of lowering the setting include:
- Reduced energy use
- Lower risk of scalding
- Less mineral buildup inside the tank
- Extended equipment lifespan
For most households, 120°F provides sufficient hot water for daily needs.
Flush Sediment from the Tank Annually
Iowa’s hard water contains minerals like calcium and magnesium. Over time, these minerals settle at the bottom of your tank as sediment.
Sediment buildup:
- Reduces heating efficiency
- Causes rumbling or popping noises
- Forces the system to work harder
- Shortens tank lifespan
Flushing the tank once per year removes buildup and restores performance.
If your water heater hasn’t been flushed in several years, professional service is recommended.
Insulate the Water Heater and Pipes
Heat loss occurs when hot water sits in the tank or travels through pipes.
Insulating:
- The water heater tank (if it’s not already insulated)
- Exposed hot water pipes
can reduce standby heat loss and improve efficiency — especially in colder Des Moines basements during winter.
Pipe insulation is particularly helpful for homes with long pipe runs.
Fix Leaks Promptly
Even small plumbing leaks increase water heater workload.
Common leak areas include:
- Faucets
- Showerheads
- Pipe connections
- Pressure relief valves
When hot water continuously drips, the heater must cycle more often to maintain temperature.
Addressing leaks quickly protects both energy efficiency and plumbing integrity.
Upgrade to a High-Efficiency Model
If your water heater is over 10–12 years old, it may be operating far below modern efficiency standards.
Newer models offer:
- Improved insulation
- Faster recovery times
- Reduced standby heat loss
- Higher energy efficiency ratings
In some cases, upgrading to a high-efficiency tank or tankless water heater can significantly reduce operating costs.
Consider a Tankless Water Heater
Tankless water heaters heat water on demand rather than storing it.
Benefits include:
- No standby heat loss
- Continuous hot water
- Smaller footprint
- Potential long-term energy savings
Tankless systems are especially appealing for households with high hot water usage.
Professional evaluation ensures proper sizing and compatibility.
Install a Water Softener
Hard water is common in Central Iowa. Mineral buildup inside your water heater reduces efficiency and accelerates wear.
- Reduces scale buildup
- Improves heating efficiency
- Extends appliance lifespan
- Protects plumbing fixtures
Softened water also improves soap performance and reduces residue on fixtures.
Use Less Hot Water Where Possible
Small behavior changes can add up to noticeable savings.
Consider:
- Washing clothes in cold water
- Taking slightly shorter showers
- Installing low-flow showerheads
- Running full dishwasher loads
Reducing hot water demand lowers heating cycles and energy usage.
Schedule Annual Professional Maintenance
Routine water heater maintenance typically includes:
- Inspecting heating elements or burners
- Testing temperature and pressure relief valves
- Flushing sediment
- Checking for corrosion
- Verifying thermostat calibration
Preventive service ensures your system operates efficiently year-round.
Need expert help now? Contact Holt for same-day plumbing or HVAC solutions.
Watch for Signs of Efficiency Loss
If you notice:
- Rising energy bills
- Inconsistent hot water
- Longer heating times
- Unusual noises
- Rust-colored water
Your water heater may be losing efficiency.
Early inspection can prevent larger repairs or premature replacement.
Don’t Forget About Plumbing System Health
Your water heater doesn’t operate in isolation. Plumbing issues can impact efficiency.
For example:
- Corroded pipes reduce water flow
- Leaks increase heating demand
- Poor insulation increases heat loss
A comprehensive plumbing inspection can identify additional efficiency opportunities.
A Realistic Iowa Example
A homeowner in Urbandale noticed rising gas bills during winter. Their water heater was over 12 years old and hadn’t been flushed regularly.
After flushing the tank and lowering the thermostat setting, they saw immediate improvement. Later, upgrading to a high-efficiency model further reduced monthly costs.
Small adjustments combined with timely upgrades can deliver meaningful savings.
Frequently Asked Questions About Water Heater Efficiency
How often should I flush my water heater?
Once per year in most Iowa homes, more often if hard water is severe.
Is 120°F hot enough?
Yes, for most households. It balances comfort and efficiency.
Does hard water really affect efficiency?
Yes. Mineral buildup reduces heating performance and increases energy use.
When should I replace my water heater?
Most tank systems last 8–12 years with proper maintenance.
Lower Energy Bills Start with Smart Maintenance
Your water heater works every day, quietly supporting showers, laundry, and dishwashing. But when it becomes inefficient, you may notice it in your utility bills before anything else.
By lowering thermostat settings, flushing sediment, insulating pipes, and scheduling regular maintenance, you can improve efficiency and extend system life — especially in Iowa’s demanding climate.
Call Holt Plumbing & Heating today to schedule fast, reliable service in Des Moines. Schedule your appointment with Holt Plumbing & Heating and experience the trusted expertise that keeps Iowa homes efficient, comfortable, and running smoothly year-round.
