Is Gas or Electric Better for a Mobile Home?
For most mobile homes, the best choice is the fuel already run to the closet. Gas, from Southwest Gas or propane, reheats a tank faster, and a standing-pilot model keeps working in an outage. Electric needs no vent or gas line and is simpler to service. Switching fuels usually means a permit and new gas or electrical work.
In Apache Junction, about 46% of homes are mobile or manufactured homes, and you'll find both fuels in every park. Neither is wrong. The questions below help you decide whether to stay with what you have when the old tank gives out, or whether a switch is worth the extra work. If your heater is failing right now, our mobile home water heater repair page covers the service side.
What Makes a Mobile Home Heater Different
A manufactured home isn't just a smaller house. Its water heater follows HUD rules on top of local ones, and the space it sits in is tight.
Gas units must be HUD-listed
Only gas models listed for manufactured-home use may go in. Most are sealed-combustion designs that take air from outside and vent out, keeping the flame apart from the living space.
Closets opened from outside
Many heaters, gas or electric, sit behind a small exterior door. That's handy for service but exposes the closet to summer heat, dust and the odd freezing night.
Will a bigger tank fit in my water heater closet?
Often not. Closets are built around the original heater, so height, width, the door opening and where the vent and pipes line up all limit what goes in. Going up in gallons can mean a taller or wider tank that simply won't fit. If you run short on hot water, a tank of the same size with a faster recovery, or a gas unit in place of a slow electric one, may help more than a bigger one. Measure the closet and photograph the old rating label before shopping.
Gas and Electric Side by Side
| Factor | Gas (natural or propane) | Electric |
|---|---|---|
| Fuel here | Southwest Gas where lines exist; propane elsewhere | SRP is the main electric utility |
| Venting | Needed, as the listing specifies | None |
| Recovery after heavy use | Generally faster | Generally slower |
| Power outage | Standing pilot keeps heating; electronic ignition stops | No heat until power returns |
| Hard water wear | Sediment over the burner, popping noises | Scale on the lower element |
| Common repairs | Thermocouple, gas control, pilot | Elements, thermostats, high-limit reset |
| Running cost | Compare EnergyGuide labels and your rates | Compare EnergyGuide labels and your rates |
Both types suffer in Apache Junction's water, which runs about 13 to 16 grains per gallon. Sediment settles on the bottom of a gas tank; scale builds on the elements of an electric one. A yearly flush helps either fuel. For noises and repairs specific to each type, see our gas water heater repair and electric water heater repair pages.
Recovery and Running Costs
Which one runs out of hot water sooner?
With the same size tank, usually the electric one. A gas burner puts heat into the water faster than electric elements do, so the tank refills with hot water sooner after showers or laundry. The rating label lists a "first hour rating": how much hot water the heater can deliver in an hour starting from full. Compare that number, not just the gallons, when choosing between two models.
Which one costs less to run?
We won't guess, because it depends on your rates and use. Instead, check the yellow EnergyGuide label on each model you're considering. It shows an estimated yearly operating cost and energy use, based on national average prices. Your real cost depends on SRP's electric rates, Southwest Gas rates, or what your propane supplier charges, and propane prices can move a lot. Compare models of the same size and type for a fair read. You can find the label on the heater or on the maker's product page.
Monsoon Outages: Which One Keeps Working?
Monsoon season runs June 15 to September 30, and storms can knock out power for hours. A gas heater with a standing pilot needs no electricity at all, so it keeps heating water through an outage. Newer gas models with electronic ignition or a power vent need power and will stop until it returns. An electric tank stops too, though a full tank stays warm for a while.
When the power comes back, an electric heater that tripped its high-limit switch or breaker may stay cold. Our guide to storms, power surges and water heaters covers what to check and the safe reset order.
Which Suits Snowbirds?
Apache Junction's population roughly doubles in winter, and many mobile homes sit empty all summer. Either fuel can be shut down safely for the season; the steps differ.
- Electric: switch off the breaker and close the cold-water valve. Nothing burns while you're away, which is why many part-year owners like electric.
- Gas: turn the control to Pilot or Off, not Vacation. On Vacation the burner still cycles to hold the water lukewarm. With propane, check the tank level before you leave and when you return.
- Either: closing the cold supply limits how much water a failed tank can release while the home is empty.
Returning in fall, an electric tank must be full before the breaker goes back on, or the elements can burn out. A gas unit may need its pilot relit; our pilot relighting guide walks through it. The full routine for leaving and coming back is in our snowbird water heater checklist, and outside closets get extra attention in our post on freeze protection.
Switching Fuels: What's Involved
Changing from electric to gas, or gas to electric, is a bigger job than a swap. In Apache Junction, the city's like-for-like permit exemptions don't cover a fuel change, so a permit is normally needed. Our water heater permit rules page explains why. Park rules may apply too, so check with the office.
What does going from electric to gas take?
A gas supply to the closet, either a Southwest Gas line or a propane tank and regulator. A HUD-listed gas heater, venting installed the way its listing requires, and enough combustion air. The electric circuit that fed the old heater is then disconnected safely.
What does going from gas to electric take?
A new 240-volt circuit sized for the heater, with room for it in the electrical panel. Older homes sometimes need panel work first. The gas line to the closet gets capped properly, and the old vent opening is sealed.
Either way, the extra work adds cost beyond a straight replacement, and we price it before anything starts. For a same-fuel swap, Angi's local average for an install or replacement is about $1,136 (the usual spread runs $819 to $1,320); our replacement cost guide explains what moves that number. Thinking about tankless instead? Our tank vs tankless comparison covers how that works in manufactured homes.
Need help choosing, or found water under the closet? Call +1 480-863-0807. If the closet floor is already wet, our water heater leak repair in Apache Junction stops the water first, and the fuel question can wait a day.
Gas vs Electric Mobile Home FAQs
Can I put a propane water heater in a mobile home without natural gas?
Yes, if it's a model listed for manufactured-home use and set up for propane. Many gas heaters can be ordered for natural gas or propane, but the two aren't interchangeable without the right parts. You'll need a propane tank, a regulator and a properly sized line to the closet, and a fuel change normally needs a permit.
Is an electric water heater safer in a mobile home?
It removes the flame, the vent and the gas line, so there's no risk of a gas leak or backdrafting from the heater. That's a real plus. A correctly installed HUD-listed gas heater is also safe, because it's sealed off from the living space. Either type still needs a working relief valve and a sound floor under it.
Will switching to gas lower my mobile home's hot water bill?
It might, but don't assume so. Running cost depends on local electric, gas or propane rates and on the models compared. Check the EnergyGuide labels for the yearly estimate, then weigh the switching cost: a gas line or propane setup, venting and a permit. On a small tank with light use, the payback can take a long time.
Which fuel is better if I only live in my mobile home in winter?
Many part-year residents lean toward electric, because shutting it down is just a breaker and a valve, and there's no pilot to relight in fall. Gas works well too if you set it to Pilot or Off before leaving. Since the home sits empty in summer, recovery speed matters less than a simple, reliable shut-down and start-up.
Can I replace my mobile home's gas heater with an electric one myself?
It's not a simple swap. A fuel change means capping the gas line, sealing the old vent and running a new 240-volt circuit, and it normally needs a permit. Gas and high-voltage work both carry real risks. Get the work priced, check your park's rules, and confirm permit needs with the city or county first.