Large storage tank
Cost to Install an 80-Gallon Water Heater: 2026 Estimate
Estimate 80-gallon water-heater installation cost, then check first-hour delivery, access, removal, fuel, venting, electrical and permit scope.
Current national observations place an 80-gallon storage water heater around $1,200–$4,000 installed before any separately required relocation, difficult access, new venting, gas-line, circuit or panel work. Capacity alone does not prove suitability: compare first-hour rating and recovery with the household's peak demand and the exact installation space.
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80-gallon water heater installation cost calculator
Start with the national installed 80-gallon storage-heater band. This gas-storage example treats removal, permits and replacement venting as separately priced extras. Deselect any item already included in the installed price; change the fuel and scope to match your project. Your estimate is free before contact details or an optional quote request.
Water Heater Cost Estimator · waterheatercostestimator.com
Itemized replacement planning range
$1,400–$5,400Midpoint: $3,400- Evidence reviewed 14 September 2026; the methodology identifies every market band and modeled allowance.
- Do not add an allowance when the contractor's installed price already includes that scope.
- Gas, electrical, venting, drain, expansion-control and local-code requirements need an on-site assessment.
- Active leaks, gas odors, carbon-monoxide alarms and unsafe electrical conditions need an immediate professional or emergency response.
What changes the result?
A useful calculation starts with the physical scope and the written commercial terms. These are the factors to make explicit:
- Fuel and exact model
- First-hour rating and recovery
- Tank diameter, height and access
- Venting, gas or electrical capacity
- Drain pan, expansion control, permit and removal
Use one scope for every quote
Give each business the same information and ask it to resolve the same boundaries. That makes the totals more comparable and exposes work left as an allowance or exclusion.
- Record the old model and rating plate
- Measure the access route and location
- List peak simultaneous uses
- Compare the same installed and warranty scope
Open the exact 80-gallon installation scenario
The on-page calculator preserves the prefilled 80-gallon gas storage replacement with removal, permits and replacement venting shown separately. It is an example with those extras excluded from the base installed price, not a claim that every replacement needs them. HomeGuide notes that removal is often already included: deselect bundled items and change the fuel, access or installation scope before using the result.
ENERGY STAR defines first-hour rating as the maximum hot-water volume a storage heater can supply in an hour beginning fully heated. Use the exact model's rating and manufacturer guidance alongside tank volume; neither household count nor gallons alone completes the sizing decision.
Worked 80-gallon replacement: base price and selected extras
The unchanged model starts with HomeGuide's $1,200–$4,000 national installed 80-gallon band. The preset adds $75–$500 for removal, $25–$300 for the permit allowance and $100–$600 for replacement venting only on the assumption that these are separate charges. Those selected extras total $200–$1,400, producing a $1,400–$5,400 planning range and a $3,400 midpoint; the midpoint is not a quoted or average local price.
If removal and permits are included and no replacement venting is separately required, untick both additions and choose the existing suitable venting option. The calculator then returns the original $1,200–$4,000 installed band. Do not add a generic labor allowance to an already installed price.
- Ask each installer to state the exact model, first-hour rating and whether the unit fits the intended space.
- Mark removal, permits, venting, expansion control and electrical or gas-line work as included, excluded or not applicable.
- Calculate your scenario, then copy or print the brief or carry it into the optional matched-quote request. Coverage and matching remain subject to availability.
Start with the installed 80-gallon evidence band
HomeGuide's current national observation is $1,200–$4,000 installed for an 80-gallon storage tank. The prefilled calculator uses that band, then shows removal, permits and replacement venting separately so missing or duplicated work is easier to spot.
Ask whether the quoted installed price includes the unit, delivery, removal, permit, pan and drain, expansion control, shutoffs, connector, venting or circuit work, startup and warranty registration.
Use first-hour delivery, not gallons alone
ENERGY STAR defines first-hour rating as the amount of hot water a storage heater can supply in an hour beginning with a fully heated tank. Two 80-gallon products can therefore deliver different peak performance because input, recovery and controls differ.
List the largest simultaneous uses and compare them with the exact product's first-hour rating. An installer should also check utility capacity, temperature settings, mixing arrangements and local requirements rather than selecting only from household count.
Large tanks make space and access consequential
Measure the tank location, doorway widths, stairs, turns, drain route and service clearances. A new 80-gallon product may not match the old tank's diameter or connections, and safe removal can require more labor than the headline replacement assumes.
For gas models, confirm combustion-air and venting design. For electric models, confirm the circuit and panel. Expansion control, seismic restraint where required, drain pans, relief discharge and permits depend on the property and local code.
Questions people ask
How much is an 80-gallon water heater installed?
A current national planning range is about $1,200–$4,000 installed before unusual access or separately required utility and code upgrades.
Is an 80-gallon tank right for a large family?
Not from gallons alone. Compare peak demand with the exact model's first-hour rating and recovery, then confirm the installation and utility requirements.
Will an 80-gallon replacement fit where the old tank was?
Not necessarily. Measure the location and entire access route and compare the exact product dimensions, clearances and connections.
Does replacement cost include removal and permits?
Only when the quote says so. The calculator exposes them as selected additions so you can reconcile the written scope.
Method and sources
The model is a planning tool, not a quotation. These are the published sources used for this page; read the full assumptions before relying on a range. Source review: 1 October 2026.
- HomeGuide water-heater installation cost guide
National installed 80-gallon capacity band and removal/venting observations, including the risk of adding removal already included in a replacement price; rechecked 1 October 2026. The underlying shared model remains dated 14 September 2026.
- Angi water-heater replacement cost guide
Published permit allowance and replacement scope context, not a local permit requirement or fee quote; rechecked 1 October 2026.
- ENERGY STAR water-heater product criteria
Official first-hour-rating definition and product-criteria context, not a household-specific sizing approval; rechecked 1 October 2026.
- ENERGY STAR heat-pump water-heater design guidance
Official heat-pump guidance on model sizing, local codes, manufacturer recommendations and large-tank installation space; rechecked 1 October 2026. Its heat-pump-specific requirements are not universal gas-storage rules.