40-Gallon Gas Water Heater Cost in Star: What Moves the Price
The price of a 40-gallon gas water heater job comes from five places: the tank itself, the venting and gas connection, any code upgrades the old setup is missing, the permit and inspection, and the haul-away of the old unit. The tank is often the smaller part. A swap into the same spot with sound venting is the simplest case, and a move or a vent rebuild is where quotes pull apart.
We do not print dollar figures here because the real number depends on your house. What you will find below is how to read a quote, which questions expose a low bid that leaves things out, and when a 40-gallon size is the right one. For a price on your own heater, call (208) 679-8357.
- Open 24/7 for emergencies
- Licensed and insured
- Clear price before work starts
- Call to book, no forms
What you are paying for, piece by piece
A gas water heater is a steel tank, a burner underneath, a flue that carries exhaust out of the house, and a gas line with a shutoff. Every one of those pieces has to be sound for the new heater to run safely. Price follows the amount of work each piece needs.
- The tank and its efficiencyStandard models and higher efficiency models differ in cost, and some need different venting. Ask which one is being quoted.
- VentingA reusable flue in good shape is quick. A rusted vent, a wrong slope, or a new route through the roof adds parts and labor.
- Gas line and shutoffA flexible connector, a drip leg, and a working shutoff are standard. Old fittings may need replacing.
- Water connections and safety partsNew supply connectors, a shutoff valve, and a temperature and pressure relief valve with a proper discharge pipe.
- Permit, inspection, and haul-awayThe permit and the removal of the old tank are part of the job. Ask whether each is in the number.
Insurance rarely pays for a worn-out heater, but it may cover water damage from a sudden leak. Ask your insurer. For your real number, call (208) 679-8357.
Is 40 gallons the right size for the house?
A 40-gallon tank is a common fit for a household of two to four people with one or two bathrooms. Larger families, big soaking tubs, or back-to-back showers and laundry may run out. Going up a size usually costs a bit more, but a tank that is too small costs you every morning.
| Household | Typical need | Worth asking |
|---|---|---|
| 1 to 2 people, one bath | 40 gallons is plenty for most | Could a smaller tank do the job? |
| 3 to 4 people, two baths | 40 gallons works if showers are staggered | Do you often run out? Consider a larger tank |
| 5 or more, or a large tub | Often needs more than 40 gallons | A bigger tank or a tankless unit |
If the family has outgrown the tank, a tankless water heater is a different route with its own gas and venting needs.
The quote should list these lines
Ask each bidder to write down
- Tank size, brand model, and the recovery rate listed on the label.
- Whether the existing vent is reused, repaired, or replaced.
- New gas connector, shutoff, and sediment trap (drip leg) status.
- Relief valve and discharge pipe.
- A drain pan, if the tank sits where a leak could damage a floor.
- Permit, inspection, and removal of the old heater.
- Any warranty terms, in the maker's own words.
A quote that skips the permit or the vent is not cheaper. It is incomplete. If you are weighing a repair against a swap, our water heater repair team can tell you whether the old tank has life left.
Call (208) 679-8357. Our line is open 24/7 and same-day appointments are available when the schedule allows.
Permits and code in Star
The Idaho Division of Occupational and Professional Licenses says a permit is required for plumbing, electrical, or HVAC work, and that a local city permit may not replace a state permit. Star City Hall at (208) 286-7247 lists plumbing and mechanical permits on its city services page, and DOPL inspections are requested at 208-334-3950.
What it means for your quote: ask whether the permit is included and who is pulling it. A licensed contractor pulls it for you. If a bid says nothing about a permit, you may be paying for a job that never gets inspected, which can matter later at resale.
Source type: Idaho DOPL and City of Star website
You can check any plumber's license with the DOPL license search or by calling (208) 334-3233. Homeowners in Middleton and Eagle should confirm permit handling with their own city building department.
What the swap day looks like
Shut off gas and water
The gas shutoff and the cold supply are closed, and the tank is drained.
Disconnect and remove the old tank
The vent, gas line, and water lines come off, and the old heater is hauled out.
Set and connect the new tank
The new heater goes on a level pad or pan, with fresh connectors, relief valve, and vent.
Leak test and light the burner
Gas joints are checked, water is run, and the burner is lit and watched through a cycle.
Gas smell? Leave first
If you smell gas at any time, leave the building and call the gas utility or 911 before you call a plumber. Do not flip switches on your way out.
For the full process, see our water heater installation page.
Gas water heater questions from Star homeowners
Usually the scope differs. One bid may reuse a worn vent and skip the permit, while the other rebuilds the vent and includes inspection. Compare line by line, not by total.
Often yes, because gas needs a vent, a gas connector, and combustion safety checks. Electric swaps skip those. The right choice depends on what the house already has.
You might, but a wrong model can mean venting or fit problems. Ask the plumber which models they will install before you buy.
A straight swap in the same spot is usually done in a few hours. Vent changes, relocation, or code upgrades add time. We give the plan before we start.
Not necessarily. Neighborhood age does not set the price. What counts is the venting route, access to the heater, and the condition of the gas and water connections. A plumber can check those when you call (208) 679-8357.
Compare a quote with a real one
Call (208) 679-8357 and we will walk through the line items for your heater, including venting, permit, and haul-away.
☎ Call (208) 679-8357