Water Heater Installation in Norristown, PA
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What a Norristown winter asks of a new water heater
Your water heater works harder here than the name plate suggests. Groundwater feeding into the tank runs cold for the seven months a year homes here need heat, October through April, so the burner or element has more work to do warming each tank of water than it would in a milder place.
A new storage water heater has to meet a federal minimum efficiency, and that minimum is not one number. It is set by a formula based on the tank's rated volume, applied separately across four different draw patterns, so two tanks of the same type in different sizes can face different minimums. Montgomery County has also seen its share of winter storms and damaging wind, the kind that knock out power for stretches. Most tank water heaters come back on by themselves once power returns, and a standing pilot model does not need power at all to keep working.
- 25°F
- the average winter night, and colder incoming water means longer heating
- 7 months
- October through April, the months homes here need heat
- 15%
- of Pennsylvania 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 $400 a year to run in Pennsylvania compared with an electric water heater.
Estimates for a typical Pennsylvania home, from EIA household energy data and Pennsylvania fuel prices. Your home will differ.
- How do I know it's time to replace my water heater?
- Once your tank passes ten years old, start planning for a replacement even if it still works. Look for rust colored water from the hot tap, a tank that's damp or wet around the base, or water that never gets quite as hot as it used to. A leak from the tank itself, as opposed to a loose fitting, means the tank is failing from the inside and won't be repaired, only replaced. If a contractor tells you the anode rod is gone and the tank is old, that's the point to stop repairing and start planning the new install.
- Should I switch to a tankless water heater?
- It depends on what you want out of your hot water and what your home can support. A tankless unit heats water on demand instead of storing it, so you don't run out partway through back to back showers. But it needs a large enough gas line or electrical circuit, and venting suited to that unit, so a contractor needs to check your home before you decide. If your current tank still works fine and fits your household's hot water use, there's no mechanical reason you have to switch.
- What changes when you install a tankless water heater?
- The biggest change is that hot water becomes limited by flow rate, not by how much is stored in a tank. You won't run out of hot water, but the unit can only heat so many gallons per minute, so two showers and a dishwasher running at once can still stretch it thin. Venting is different too, since a tankless unit vents through the wall or roof differently than a tank does, and gas or electrical service to the unit often needs upgrading to meet its demand. A contractor will size the unit to your home's fixtures and check what your gas line or electrical panel can support before install.