Water heater installation in Saint Paul, MN
When your old tank is leaking or worn out, we size and install a new gas or electric water heater, bring the venting and connections up to current code, and haul the old one away.
- Phone answered 24/7
- Saint Paul office on E 7th Street
Tell us what you see and hear. We explain the visit and the likely cost on the phone. (651) 215-2087
The short answer
Water heater installation replaces an old tank with a new gas or electric model sized to your household. We pull the city permit, drain and remove the old heater, set the new one, and redo the gas, venting, water and relief valve connections. Most swaps take three to five hours. Typical Saint Paul range: $1,690 to $3,470 for a 40 or 50 gallon tank.
Choosing the right size and fuel for your house
Bigger isn't always better. The number that matters most is first-hour rating: how much hot water the heater can deliver in a busy hour, starting full. A household of two in a Saint Paul bungalow might do fine with a 40 gallon gas tank, while a family of five with a soaking tub often needs 50 or more, or a model with faster recovery.
Fuel usually follows what you have. Most Saint Paul homes have natural gas in the basement, and gas tanks recover faster than standard electric ones. If you're electric only, a heat pump water heater is worth considering. It costs more up front but uses much less electricity, and it works well in a warm basement near the furnace.
We'll ask how many people live there, how many bathrooms you have, and whether anyone complains about running out. Then we recommend a size, not just the same tank you had.
What water heater installation costs in Saint Paul
Typical Saint Paul installed ranges for tank water heaters, including permit and removal of the old tank. The final price is confirmed after we see your setup.
| Job | Typical range |
|---|---|
| 40 gallon gas tank, like-for-like swapAtmospheric vent into an existing flue | $1,690 to $2,640 |
| 50 gallon gas tankLarger households or two-plus bathrooms | $1,870 to $3,470 |
| 50 gallon electric tankStandard electric resistance model | $1,540 to $2,710 |
| Power-vent gas tankWhen the chimney can't vent the heater | $2,890 to $4,370 |
| Heat pump water heaterElectric homes with a warm basement | $3,640 to $5,930 |
What moves the price
- Tank size, fuel and type of venting
- Venting changes needed for draft in an older chimney
- Expansion tank, gas shutoff or drain pan additions
- Access through narrow basement stairs or crawlspaces
- Permit and inspection requirements
- Evening, weekend or holiday timing for an emergency swap
Typical Saint Paul ranges. We confirm your price after we see the job and before work starts. See every price on one page.
How water heater installation goes, start to finish
Size the heater to your household
We look at your current setup, ask about hot water use, and recommend a size and fuel type that fits.
Pull the permit
Water heater replacement needs a city plumbing permit, and we pull it before the installation.
Remove the old tank
We shut off gas or power and water, drain the tank, disconnect it and carry it out of the house.
Set and connect the new heater
We set the heater level, install new water, gas and vent connections, and add an expansion tank or drain pan if needed.
Fill, start and test
We fill and purge the tank, light or power it, test for gas leaks and draft, and check temperature at a faucet.
Inspection and cleanup
We haul away the old heater and packaging and schedule the city inspection of the new installation.
What changes when we install a new heater in an older house
Swapping a water heater isn't just unhooking one tank and hooking up another. Codes have changed since many old heaters went in, and we bring the connections up to date as part of the job. That often means a new gas shutoff and sediment trap, a correctly sized vent connector, an expansion tank if your system needs one, and a proper relief valve discharge line.
Venting deserves special attention. In older homes, the water heater often shares a chimney with the furnace or boiler. If the furnace was replaced with a high-efficiency model vented out the side wall, the water heater may now be alone in a chimney that's too big for it. That can cause poor draft and backdrafting. We check this on every installation.
- New gas shutoff and sediment trap on gas models
- Vent connector sized and pitched for proper draft
- Thermal expansion tank where the water system needs one
- Relief valve discharge piped to a safe spot near the floor
- Dielectric or brass fittings to limit corrosion at the connections
- Drain pan where a leak could damage finished space
How a water heater replacement day goes
Most standard swaps take three to five hours. We arrive with the new heater, protect the path from the door to the basement, and shut off gas or power and water. We drain the old tank, which takes a while if it's full of sediment, disconnect it, and carry it out.
Then we set the new heater, make the water, gas and vent connections, fill the tank, purge the air from the lines, and light it or turn on the power. We check for gas leaks, test the draft at the vent, confirm temperature at a faucet, and show you how to shut it off. The city inspection is scheduled afterward, and we handle that too.
Making your new water heater last
A new tank heater can last 12 years or more with basic care. Flushing a few gallons from the drain valve once a year keeps sediment from building up on the bottom. Checking the anode rod every three to five years, and replacing it when it's mostly eaten away, protects the steel tank from rusting.
Setting the thermostat around 120 degrees F is a good balance of comfort, safety and efficiency for most households. If you're in a hard water area, a water softener protects the heater as well as your faucets and fixtures. We can set up a maintenance visit if you'd rather not do the flushing yourself.
Signs it is time for water heater installation
Water leaking from the tank body
Once the steel tank rusts through, it can't be repaired, and a slow drip can turn into a flood without warning.
The heater is past 10 to 12 years
Tanks in this range tend to fail suddenly, so planning a replacement on your schedule beats an emergency swap.
Rust at the base or on fittings
Corrosion around the bottom seam or the inlet and outlet often means the tank is rusting from the inside.
Not enough hot water for your household
If a growing family runs out every morning, a larger tank or a faster recovery model can fix it.
Repeated repairs on an aging tank
If you've replaced a gas valve and thermocouple and it's still failing, money is better spent on a new heater.
Planning a basement finish
Replacing an old heater before walls go up makes access, venting and drain pan placement much easier.
Water heater installs in Saint Paul's prewar basements
A large share of Saint Paul houses were built before World War II, and many still have tight basement stairs, low ceilings and a shared masonry chimney. In homes around Summit-University, Dayton's Bluff and Merriam Park, getting a 50 gallon tank down a narrow stairway can be a job of its own, and venting into an older chimney needs a careful check after the furnace has been updated.
Further out, homes in Woodbury, Cottage Grove and other east metro suburbs with hard water tend to wear out tanks faster from scale buildup. That's worth considering when choosing a heater, and it's a good reason to pair a new install with a water softener. Every installation needs a city plumbing permit, and we pull it and schedule the inspection.
Where we do water heater installation
Saint Paul and the surrounding east metro. These are the busiest ZIP codes on our board; the full list has 55 neighborhoods, cities and counties.
Questions about water heater installation
How long does a water heater installation take in Saint Paul?
A like-for-like tank swap usually takes three to five hours. Draining a sediment-heavy old tank, venting changes, or moving the heater to a new spot can add time. If you have no hot water, we try to finish the same day so you can shower that night.
Do I need a permit to replace my water heater in Saint Paul?
Yes. Water heater replacement needs a city plumbing permit and an inspection. We pull the permit and schedule the inspection as part of the job. It's there to confirm the gas, venting and relief valve are installed safely, which matters most on gas heaters.
Should I replace my gas water heater with a heat pump model?
It depends. A heat pump water heater uses much less electricity than a standard electric tank, but if you already have gas, the savings are smaller. It needs a basement with room for air around it and stays cooler where it sits. We'll talk through the numbers for your home.
What size water heater does my family need?
Most homes with one or two people do fine with a 40 gallon gas tank. Families of four or more, or homes with several bathrooms, usually need 50 gallons or a model with faster recovery. We look at your household and hot water habits before recommending a size.
Do you haul away the old water heater after installation?
Yes. Removing and disposing of the old tank is part of every installation. We drain it, disconnect it, carry it out, and take it with us, along with the new heater's packaging.
Brands we work on in Saint Paul homes
- Kohler
- Moen
- Delta
- American Standard
- Rheem
- A. O. Smith
- Bradford White
- Navien
- Rinnai
- InSinkErator
- Zoeller
- Liberty Pumps
- Watts
- Weil-McLain
Call the Saint Paul office, day or night
A real person picks up at any hour. Tell us what you are seeing, and we will tell you what happens next and roughly what it costs.
(651) 215-2087- Phone
- Answered 24 hours a day, 7 days a week
- Office
- 289 E 7th Street, Saint Paul, MN 55101
- Headquarters
- 50666 229th Ave, Bemidji, MN 56601
- Coverage
- Saint Paul and the east metro, see all areas