A new boiler and hot water tank typically cost $7,000-$16,000 installed in the United States, with an average project near $11,000. The final price depends on boiler fuel and capacity, tank type, venting and piping changes, labor rates, and whether old equipment must be removed.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Boiler and separate tank, installed | $7,000 | $11,000 | $16,000 | Standard replacement, typical access |
| Boiler equipment | $3,500 | $6,000 | $9,500 | Gas or oil unit, before installation |
| Hot water tank | $900 | $1,800 | $3,500 | Storage or indirect tank, equipment only |
| Installation labor | $1,500 | $2,800 | $5,000 | Higher when piping or venting changes |
What a boiler and tank replacement usually costs
For a straightforward replacement, a standard gas boiler paired with a separate storage or indirect hot water tank often totals $7,000-$12,000 installed. Higher-efficiency equipment, a larger home, or substantial vent and piping work can bring the total to $12,000-$16,000 or more. These estimates assume common residential equipment and no major structural repairs.
Boiler equipment commonly runs $3,500-$9,500, while the tank adds about $900-$3,500 for the unit. A separate conventional water heater may be priced differently from an indirect tank heated by the boiler; quotes should specify the tank type and whether controls, circulators, and valves are included. Assumptions: U.S. replacement job, standard access, midrange equipment, no major code remediation.
A typical combined replacement averages about $11,000 installed. In high-cost metro areas or for premium equipment, a quote can exceed the ranges shown.
How equipment, piping, and labor shape the quote
Quotes are easier to compare when boiler, tank, labor, and job-specific charges are listed separately. Equipment selection and the amount of adaptation needed to connect the new units account for much of the price difference.
| Quote component | Typical range | What it covers |
|---|---|---|
| Boiler and controls | $3,500-$9,500 | Residential unit, basic controls |
| Hot water tank | $900-$3,500 | Storage or indirect tank, equipment |
| Labor and installation supplies | $1,500-$5,000 | Removal, setting, connections, startup |
| Venting, piping, or electrical work | $300-$2,500 | Changes needed for new equipment |
| Permit and disposal charges | $100-$700 | Local permit and old-unit handling |
Some contractors include removal, startup, and a basic permit in the labor line; others itemize them. Check that the quote identifies the boiler, tank type, controls, venting, disposal, and permit charges.
Capacity, efficiency, and venting can shift the total
Boiler size should match the home’s heat loss, not simply the old unit’s rating. A residential boiler around 60,000-100,000 BTU may suit some smaller or well-insulated homes, while larger or less insulated homes can require 100,000-150,000 BTU or more. Oversizing can raise the equipment price without improving comfort.
Higher-efficiency condensing boilers generally cost more than basic models and may require a condensate drain, compatible venting, and system adjustments. Changing from a chimney-vented unit to a direct-vent model can add roughly $500-$2,000 for vent materials and labor. Tank capacity also matters: a 40-50-gallon tank is common, while a larger household may need 60-80 gallons or an indirect tank sized to demand.
Capacity and vent compatibility can add hundreds or several thousand dollars. Ask whether the contractor performed a heat-loss calculation and confirmed first-hour hot water needs before selecting equipment.
Regional boiler installation rates vary by market
Labor and code requirements create meaningful regional differences. A comparable replacement may run about 10%-20% below the national midpoint in lower-cost rural markets, while dense Northeast and West Coast metro areas can be 15%-30% above it. Older homes with tight mechanical rooms, masonry chimneys, or difficult equipment access may cost more regardless of region.
These percentages are planning estimates rather than fixed regional price lists. Local fuel availability, contractor demand, permit rules, and winter scheduling affect bids. Compare quotes from contractors who price the same capacity and tank configuration. A low quote may omit disposal, vent changes, or required code work that appears on another proposal.
How long installation takes and what labor includes
A like-for-like boiler and tank replacement commonly takes a two-person crew one to two days. A project involving new venting, relocated equipment, extensive piping, or electrical changes may take two to three days. Typical labor and installation charges fall around $1,500-$5,000, depending on crew time and local hourly rates.
Work often includes draining the system, disconnecting and removing old equipment, setting the new units, reconnecting water and heating lines, and testing operation. Confirm whether the quote covers startup, system flushing, and removal of both old appliances. Ask about temporary loss of heat and hot water if installation spans more than one day.
Removal, permits, and system upgrades add-on charges
Old boiler and tank removal may be included or billed separately, commonly adding $150-$600. A permit and inspection can cost about $100-$500, though local fees vary. If the new boiler requires a chimney liner, upgraded gas line, condensate pump, or expansion tank, additional work may add $300-$2,500 or more.
Replacing a boiler in an older home can expose corroded valves, undersized piping, or unsafe venting. Those conditions are not always visible during a basic estimate. Request written pricing for likely upgrades and approval before extra work begins. Rebates may be available for qualifying high-efficiency equipment, but eligibility and amounts depend on location, utility, and current programs.
Which choices can lower the boiler and tank price?
Keeping equipment in the same location and retaining compatible piping and venting can limit labor. Compare at least three itemized bids using the same boiler capacity, efficiency level, and tank type. A cheaper appliance price is not a true saving if the proposal excludes controls, permits, removal, or commissioning.
Choose tank capacity based on household demand rather than automatically buying the largest model. Avoid paying for premium controls or efficiency features unless they fit the home’s heating system and expected use. Replacing only the failed component may cost less when the other unit is sound and compatible. Have a qualified contractor assess age, condition, warranty, and connection requirements before choosing a partial replacement.