Water heater installation · Cedar City, Utah
Water heater installation in Cedar City, UT: choosing the type, size and location, and what the quote should list
A new water heater is a purchase you make once a decade or so, often with cold showers as the deadline. A few decisions made before the install, on type, size and location, matter more than the brand on the tank.
Heater dead or leaking?
- LEAKING
- Shut the cold water valve above the heater
- GAS SMELL
- Leave the building, then call the gas utility or 911
- BEFORE YOU BUY
- Write down the fuel, the tank size and the model label
Replace it or repair it? Start with the age and the leak
If the tank itself is leaking, the heater is finished and the only question is what replaces it. If the problem is a part, a repair may be the better spend. The table separates the two.
| What you find | Usually means | Next step |
|---|---|---|
| Water running from the tank body or base | The tank has corroded through | Replace |
| A drip at the inlet, outlet or relief valve | A fitting or valve has failed | Repair, see water heater repair |
| No hot water on an older heater with heavy rust at the base | The tank is near the end of its life | Get a replacement quote beside the repair quote |
| Hot water runs out fast, with popping noises | Sediment, which is common with hard water | Ask about flushing before deciding |
| Repeated repairs within a short time | The unit is wearing out in several places | Replace |
Ask for the repair and replacement quotes together. A plumber who only offers one of them has already decided for you.
Tank, tankless, heat pump or hybrid: which fits your house
| Type | Fits best when | Watch for |
|---|---|---|
| Standard tank, gas or electric | You want a like-for-like swap with the least change to pipes and venting | Standby heat loss, and a tank that is only as good as its sediment management |
| Heat pump or hybrid tank | You have open space around the unit and want lower running cost on electric | It needs room and airflow, and it cools the space around it. Ask how it performs in a cold garage in January. |
| Tankless | You have a larger household or limited floor space | Gas line size, venting and hard water. See tankless heater options. |
Fuel matters as much as type. Switching from gas to electric, or the reverse, changes the wiring or the gas line, so it belongs in the quote as its own line.
Heater sizing: peak-hour hot-water use in your household
An undersized heater runs out during the busiest hour. An oversized one costs more to buy and to keep hot. The number that matters is the peak hour, not the daily total.
- List the hot-water uses that overlap in your busiest hour: showers, dishwasher, laundry, a soaking tub.
- Note how many people are in the house and whether that number will change.
- Check the first-hour rating on the new model, not just the tank gallons.
- Ask the plumber to explain the size they chose and what happens when two showers run at once.
The heater sizer on the home page gives a starting range. Treat it as a guide to bring to the conversation, not a final answer.
Very hard water and the life of a new tank
What hardness does to a new heater
A USGS estimate built from Iron County samples puts hardness at about 13 grains per gallon, which is very hard. That is a county estimate, not a reading from your tap.
Hard water leaves scale on the bottom of a tank and on heating elements, and the heater works harder as it builds. Ask the plumber how they plan to manage sediment in the new unit, what the manufacturer says about flushing and whether a softener should be part of the plan.
Source: USGS county-level estimate as published on tapwaterdata.com; secondary source.
Lifespan depends on water quality, size and maintenance, so no single number applies to every house. A written flushing plan is more useful than a promised lifespan.
Ready to talk through a replacement?
Call with the heater’s fuel type, size and where it sits. A plumber can walk you through the options.
Where the heater sits: garage, closet, attic or crawl space
The location decides what can be installed. Gas heaters need clearance and venting. Heat pump models need air. Heaters in attics or above finished ceilings need a drain pan and a plan for where a leak will go.
Cold spaces and Cedar City January nights
January nights in Cedar City average about 18°F, and the city sees nearly four feet of snow in a typical year.
A heater in an attached garage or vented crawl space sits in that cold. Ask for insulated supply pipes, a drain pan with a drain line and a clear route for the relief valve discharge. Ask the plumber to confirm the new unit is rated for where it will live.
Source: climate data on Wikipedia’s Cedar City page; secondary source.
What a proper installation includes
- A new shutoff valve on the cold supply and new flexible connectors
- A temperature and pressure relief valve with a discharge pipe routed to a safe spot
- An expansion tank where the plumbing is a closed system and the plumber says one is needed
- On a gas heater: a shutoff valve, a sediment trap, a check of the vent and a leak test at the gas connection
- On an electric heater: a check of the breaker size and the wiring
- A drain pan and drain line where a leak could damage finished space
- Hauling away the old tank, and who does it
Permit and inspection: ask before the work starts
Water heater replacement often requires a permit and an inspection, and the rules are set locally. Ask the plumber whether a permit applies in Cedar City, who pulls it and whether an inspection is scheduled. You can also ask the Cedar City Building Department directly.
Verify the plumber too. The Utah Division of Professional Licensing has a license lookup you can search by name.
Reading a replacement quote line by line
- Brand, model, capacity and fuel, written out
- The warranty on the tank and on the labor, and how each is claimed
- Code or safety upgrades, listed separately from the heater itself
- Removal of the old unit and who pays for disposal
- How long the water will be off, and what happens if the work uncovers a problem
- The total for everything, with no work added after the fact without your say
Heater replacement: when it cannot wait and when it can
Replace without delay
- Water running from the tank body or base
- No hot water and the tank is old with rust at the base
- A relief valve discharging steadily
- Any smell of gas near a gas heater (leave first)
A swap you can plan
- A working heater that is old and noisy
- A tank sized for a smaller household than you have now
- A wish to move to tankless or a heat pump model
- A remodel that is changing where the heater sits
Questions before you buy a water heater
How long does a water heater last when the water is very hard?
It depends on the unit, its size and how it is maintained, and there is no single figure that fits every house. Iron County water is estimated at about 13 grains per gallon, which is very hard, so scale and sediment are expected. Ask the plumber for a flushing plan and whether a softener makes sense.
Do I need a permit to replace a water heater in Cedar City?
Permit rules are set by the city, so ask the plumber whether one applies and who files it, or ask the Cedar City Building Department directly. Get the answer in writing with the quote.
Should I replace a tank heater with tankless or a heat pump model?
It depends on household size, space and fuel. A tank is the simplest swap. Tankless suits larger households and tight spaces but needs the right gas line and venting. A heat pump model saves energy on electric but needs open space and airflow. Ask the plumber to compare the options for your house.
How long does a water heater installation take?
Many tank swaps are done in a few hours, but a new location, venting changes or code corrections can add time. Ask for the plumber’s estimate and how long the water will be off.
Related heater and water work
Heater failing and need a replacement plan?
Call with the fuel type, the tank size and where the heater sits. You will talk to a plumber, not fill in a form.