Where the heater goes decides most of the job
Most newer Marana homes sit on concrete slabs, so heaters usually live in a garage, a utility closet or an attic. Tucson June highs average about 101 degrees, and garages and attics run hotter than the air outside. Heat shortens the life of seals and electronic controls.
A garage floor location is the easiest to service and the easiest to drain if it leaks. An attic location needs a sturdy platform, a drain pan with a discharge path, and room to work. We look at the space with you before any equipment is ordered.
What we check before we set a tank
This list is what separates a tidy install from a callback.
- Fuel type: natural gas service at the address, or electric only
- Gas line size and shutoff, if the heater is gas-fired
- Electrical capacity and a dedicated breaker, if the heater is electric or heat pump
- Venting path and clearances for a gas unit, and airflow room for a heat pump unit
- Water pressure at the home, and whether a pressure reducing valve is present
- Space for a drain pan and a relief valve discharge line to a safe place
- Whether an existing check valve means an expansion tank is needed
Planning a new heater?
Call (855) 575-2890 and we will go over the options.
Which fuel and heater type fits your home
The right heater depends on what the house can already support. These are the common patterns.
| Heater type | What it needs | Planning note |
|---|---|---|
| Gas tank | Gas line, vent, makeup air, drain pan | Only where gas service exists. Many Marana homes are all-electric. |
| Electric tank | Dedicated breaker and wiring of the right size | Simple to place, and it can sit in a tighter space. |
| Heat pump (hybrid) | Open air space, a condensate drain, electrical supply | Works best in a garage or utility area with room around it. |
| Tankless | Larger gas supply or heavy electrical capacity, venting | Hard water means regular descaling. See our tankless page. |
Thermal expansion and pressure
Water expands as it heats. If the home has a pressure reducing valve or a check valve at the meter, that expanded water has nowhere to go, and pressure spikes inside the tank. An expansion tank gives it a place to go, and a pressure reducing valve keeps incoming pressure in a safe range.
A dripping relief valve is often a pressure problem more than a valve problem. We measure pressure at install time so the new heater is not stressed from its first day.
Drain pan, discharge line and the small parts that save floors
A relief valve is a safety device, and its discharge line has to run somewhere safe. A drain pan under a heater, piped to a proper drain or outdoors where practical, gives a slow leak somewhere to go besides your garage wall.
Flex connectors, shutoff valves and dielectric fittings go in new. Reusing 15-year-old supply connectors on a new tank is a leak waiting to happen.
Code adoption, permits and inspection
Town Code adopts the 2024 International Plumbing Code (IPC) with local amendments, along with the International Fuel Gas Code and a 2023 NEC edition for electrical work. The local amendments are posted on the Town's building safety page, and we install to what is adopted.
Marana lists water heater replacement under its permit application process with a safety inspection. For details, contact Development Services at (520) 382-2600. Unincorporated areas such as Picture Rocks follow Pima County, which lists a new or replacement water heater as requiring a permit. Our Picture Rocks page covers that area.
How an installation visit runs
A planned install takes a morning or longer, depending on the changes.
- 1
Walk-through and plan
We read the label on any existing unit, measure the space, and confirm fuel and power.
- 2
Price confirmed
You get a clear price before work starts, including permit items and any code parts.
- 3
Install and connect
The pan, tank, valves, relief discharge and fuel or power connections go in, in that order.
- 4
Test and walk-through
We fill, purge, fire or energize the heater, check for leaks, and show you the shutoffs.
- 5
Inspection support
Where a permit applies, we point out what the inspector reviews.
Hard water and what to plan around it
Hardness varies across Marana. Marana Municipal at Gladden Farms averages about 9 grains per gallon, Picture Rocks and Saguaro Bloom near 12, and Hartman Vistas around 5. High hardness leaves mineral scale in a tank, so we include a drain valve you can reach and discuss an anode rod check. A softener is another option, and our softener and filtration page explains it.
What drives the cost of a water heater installation
Cost follows the heater you choose and the changes the house needs to receive it.
Frequently asked questions
Marana lists water heater replacement under its permit application process with a safety inspection. Contact Development Services at (520) 382-2600, since requirements can vary by project.
Town Code adopts the 2024 International Plumbing Code with local amendments. The amendments are posted on the Town's building safety page.
It can, with a sturdy platform, a drain pan and a discharge path. A garage floor is easier to service, though garages get hot too.
If the home has a closed system, from a check valve or pressure reducing valve, it often does. We measure pressure and check before deciding.
It depends on electrical capacity and the space. A heat pump unit needs open air around it and a condensate drain.
Picture Rocks is unincorporated Pima County. Pima County and not the Town handles the permit, and the average hardness there is about 12 grains per gallon.
A leaking tank is an emergency. Shut off water and power and read about emergency replacement while you call (855) 575-2890.