Water Heater Not Heating? Electric vs. Gas Troubleshooting for Grant County Homes
A water heater that stops producing hot water is one of the most common service calls we get across Grant County, from Moses Lake proper out to Ephrata, Quincy, and Soap Lake. The fix depends entirely on whether you’re running electric or gas. Before you call anyone, here’s how to narrow down what’s actually wrong, and when this becomes a job for a licensed professional instead of a weekend project.
Electric Water Heaters: Start With the Breaker and the Elements
Electric water heaters fail in a fairly predictable order.
Check the breaker first. Electric water heaters typically run on a dedicated 240-volt double-pole breaker. If it’s tripped, that alone doesn’t tell you why, but it’s the fastest thing to rule out.
The high-limit reset switch. Most electric water heaters have a red reset button on the upper thermostat, behind the access panel. If the water got too hot at some point, this safety switch trips and cuts power to the elements. Pressing it back in sometimes solves the problem temporarily, but a switch that keeps tripping points to a failing thermostat, not a one-time fluke.
Heating elements. Electric water heaters have two elements, upper and lower. When one fails, you’ll often get some hot water, just not much and not for long, since only one element is working. When both fail, or the single element in a smaller unit fails, you get no hot water at all. Elements can be tested with a multimeter for continuity, but working inside an energized water heater is exactly the kind of task where an amateur mistake means a shock hazard or a flooded utility closet.
Thermostat failure. If elements test fine but water still isn’t heating, the thermostat controlling them has likely failed. This isn’t a visual diagnosis. It requires testing with the right equipment.
Gas Water Heaters: Start With the Pilot and the Thermocouple
Gas units fail differently, and troubleshooting them safely requires understanding that you’re working around a live gas line.
Pilot light out. This is the most common and simplest cause. Most modern gas water heaters have a straightforward relight procedure printed on the unit itself. If you can relight it and it stays lit, you’re done. If it won’t stay lit, move to the next item.
Thermocouple failure. The thermocouple is a safety sensor that shuts off gas flow if it doesn’t detect the pilot flame. A worn thermocouple will let the pilot light but then shut gas flow within seconds, which reads as “the pilot won’t stay lit” to most homeowners. This is a cheap, common part to replace, and it’s one of the most frequent reasons gas water heaters lose hot water in older Grant County homes, particularly units original to houses built decades ago in Ephrata and Soap Lake.
Gas valve or thermostat failure. If the pilot stays lit but the burner never fires to heat the tank, the gas control valve or thermostat assembly has likely failed. This is not a DIY repair. It involves gas line work and requires a licensed technician.
Venting issues. Gas water heaters need proper venting to operate safely. A blocked or improperly installed vent can cause the unit to shut down as a safety measure, and in the worst cases, creates a carbon monoxide risk. If your water heater is in a garage or utility closet and you notice any soot, discoloration around the vent, or a persistent smell, stop troubleshooting and call a professional immediately.
When This Stops Being a DIY Project
A few situations should send you straight to a licensed technician rather than a search engine:
- Any smell of gas near the unit, however faint
- Water heater is more than 10 to 12 years old and failing
- Repeated tripping of the high-limit switch on an electric unit
- Any sign of water pooling at the base of the tank, which usually means the tank itself has failed and needs replacement, not repair
Repair vs. Replace
As a general rule, if your water heater is under 8 years old and the failure is a single component, thermocouple, element, or thermostat, repair is usually the right call. Past the 10 to 12 year mark, especially with tank corrosion or repeated failures, replacement is typically the better investment, particularly with more efficient models now available for both gas and electric. Hard water throughout parts of Grant County can also accelerate sediment buildup at the bottom of the tank, which shortens element life on electric units and can affect burner performance on gas units, so a water heater’s real age in this region sometimes matters more than the manufacturer’s rated lifespan would suggest.
When to Call Immediately
Reach out to a licensed technician right away if:
- You smell gas anywhere near the water heater, however faint
- The high-limit switch on an electric unit keeps tripping after a reset
- You see water pooling at the base of the tank
- The unit is over a decade old and showing any sign of failure
A water heater problem rarely fixes itself, and a delayed diagnosis on a gas unit in particular carries real safety stakes, not just a cold shower.
HES Electrical & HVAC handles both electric and gas water heater diagnostics and repair throughout Moses Lake, Ephrata, Quincy, Soap Lake, and the rest of Grant County, with technicians licensed to safely work on both the electrical and gas sides of your system.
