Water Heater Installation in Gaffney, SC
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What a Gaffney winter asks of a water heater
Cherokee County homes run their heat from October through April, seven months of the year, with winter nights averaging 32°F. A water heater sits in that same cold house through all of it, and the incoming water it has to warm up is coldest right when the furnace is working hardest too.
Power doesn't always stay on through it. The county has seen 6 winter storms and 49 damaging wind events over the past ten years, and across South Carolina 45% of households lost power for 24 hours or more in 2024. A gas water heater with a standing pilot will keep working through an outage. One that relies on an igniter won't light until the power is back. Whichever type goes in, it has to meet the federal efficiency minimum, which is set by a formula based on the tank's rated volume rather than one number for every size.
- 32°F
- the average winter night, and colder incoming water means longer heating
- 7 months
- October through April, the months homes here need heat
- 45%
- of South Carolina households lost power for a day or more in 2024, and a heater with an electric element or electric ignition stops without it
NOAA nClimDiv, 1991–2020 normals
A heat pump water heater would save about $300 a year to run in South Carolina compared with an electric water heater.
Estimates for a typical South Carolina home, from EIA household energy data and South Carolina fuel prices. Your home will differ.
- How do I know it's time to replace my water heater?
- Water pooling at the base of the tank means it's done, since that's the tank itself failing and not a part you can replace. Rusty hot water, a tank that's gotten old, or water that never gets as hot as it used to are the other signs. A popping or rumbling sound during heating points to sediment built up on the bottom of the tank, which shortens what's left of its life. If your unit is showing more than one of these, it's worth having someone look before it fails outright and leaves you without hot water.
- Should I switch to a tankless water heater?
- It depends on what you want out of it. A tankless unit heats water only when you're running a tap, so it doesn't hold a tank of hot water waiting and doesn't run out during a long shower. It also takes up much less space than a tank. Against that, a tankless unit needs a gas line and venting sized for it, and going tankless often means changes to the gas supply or the electrical circuit feeding it. A contractor can tell you what your house would need to make the switch.
- What changes when you install a tankless water heater?
- The biggest change is that hot water is made on demand instead of stored. That means the gas line to the unit often needs to be a larger diameter, since a tankless heater draws more gas at once than a tank heater does. Venting changes too, since tankless units vent differently than tank units and need their own venting sized to the unit. Some installations also call for an upgraded electrical circuit. All of this is why a straight swap from tank to tankless is rarely as simple as pulling one out and setting the other in its place.