An oil to gas conversion kit typically costs $1,000-$4,000 for burner equipment, but a complete heating-system conversion often totals $6,000-$15,000. The final price depends on furnace compatibility, gas-line distance, local utility work, chimney requirements, and whether the oil equipment can be safely converted.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Gas conversion burner and controls | $1,000 | $2,500 | $4,000 | Equipment only; compatibility varies |
| Installed burner conversion | $3,000 | $5,500 | $8,000 | Assumes usable furnace and nearby gas |
| Complete oil-to-gas project | $6,000 | $10,000 | $18,000 | May include new furnace, gas line, and removal |
Assumptions: U.S. residential project, standard access, and typical contractor labor; utility charges and regional prices can change totals.
What an oil furnace gas conversion usually costs
A conversion burner replaces the oil burner with a gas-fired burner, but it is not a universal plug-in kit. A technician must confirm that the furnace or boiler heat exchanger, controls, and venting are approved for the equipment. A compatible retrofit may cost $3,000-$8,000 installed; replacing an older oil furnace with a gas furnace can bring the full project to $6,000-$15,000 or more.
Most homeowners should budget for the complete heating changeover, not just the burner kit. The lower end assumes existing natural-gas service and reusable equipment. A new gas service connection, major vent work, or an equipment replacement can push the bill above $18,000. Prices are generally higher in expensive metro areas and where licensed gas-fitting labor is limited.
Which burner, labor, and venting charges appear on quotes
Quotes should separate the burner and controls from installation and gas-supply work. The table shows common planning ranges, not guaranteed line-item prices; some contractors bundle equipment and labor. Ask whether the estimate covers testing, permits, and safe disconnection of the oil system.
| Quote item | Typical price | What changes the charge | Common unit |
|---|---|---|---|
| Gas conversion burner and controls | $1,000-$4,000 | Model, capacity, and furnace compatibility | Per burner |
| Installation labor | $1,000-$3,000 | Fit-up, wiring, commissioning, and access | $100-$175 per hour |
| Gas piping inside the home | $500-$2,500 | Pipe size, route length, and appliances served | $15-$40 per linear ft |
| Venting or chimney changes | $300-$2,500 | Flue condition and equipment requirements | Per project |
| Oil tank work and disposal | $500-$3,000 | Tank location, size, and removal method | Per tank |
Labor and fuel-line work can together rival the burner’s equipment price. Estimates may also include a gas pressure test, startup adjustments, and inspection fees.
How gas-line distance and furnace capacity change the estimate
Distance from the meter is a major cost driver. A short, accessible run of up to 25 feet may cost about $500-$1,500, while a 50-100-foot route through finished walls, a crawlspace, or a concrete slab can cost $1,500-$4,000 or more. The pipe must also supply enough gas volume for the furnace and any water heater, range, or other connected appliances.
Heating capacity and condition matter, too. A system below roughly 100,000 BTU may have different burner and piping needs than a larger unit, while an old or damaged heat exchanger can make retrofit unsafe or impractical. Get written confirmation that the specific furnace model is approved for the proposed gas burner. A basic visual inspection is not a substitute for manufacturer compatibility and code checks.
Is a burner retrofit cheaper than a new gas furnace
A retrofit can cost less upfront when the oil furnace or boiler is relatively sound, compatible, and expected to last. A new gas furnace often costs $4,000-$9,000 installed before extensive gas-line or tank work; higher-efficiency equipment and difficult venting can raise that range. Replacing the oil appliance may be the more practical choice if the heat exchanger is cracked, parts are unavailable, or the system is near the end of its service life.
Compare the complete installed price and expected remaining equipment life, not burner prices alone. Ask contractors to quote both a compatible conversion and replacement where both are feasible. A retrofit that saves $2,000 initially may be poor value if major repairs are likely soon.
How long installation takes and what labor includes
A straightforward burner change may take 6-10 hours, often completed in one workday. A full furnace replacement with new piping may require 1-3 days, while difficult access, masonry work, or utility coordination can extend the schedule. Labor rates commonly run $100-$175 per hour, though fixed-price bids are more usual for residential conversions.
Installation typically includes disconnecting the oil burner, fitting gas equipment, connecting controls and piping, checking draft or venting, and testing combustion. Confirm that startup testing and final safety checks are included in the quote. A separate electrician may be needed if the project requires new circuits or control wiring.
Why gas conversion prices differ by region and utility
Labor, permitting, and utility practices vary substantially across the country. Dense Northeast markets with extensive older oil-heated housing may price a complex conversion 10%-25% above a rural market with straightforward access. In areas without a gas main at the property, extending service can add several thousand dollars or make natural gas unavailable; the utility determines whether any extension charge applies.
Some utilities cover or discount part of a service connection, while others charge the homeowner. Ask the gas utility and contractor separately about meter, service-line, and indoor-piping costs. Those charges may not appear in a furnace contractor’s equipment estimate.
Tank removal, permits, and other charges to verify
Removing an indoor or aboveground oil tank commonly costs $500-$2,000; underground tank removal or remediation can exceed $3,000 and may require environmental testing. Permit and inspection charges often fall around $100-$500, depending on local rules and the number of trades involved. Chimney liners or new venting may add $300-$2,500 if the existing setup is unsuitable for the gas appliance.
Check whether the bid includes tank abandonment or removal, disposal, permits, and utility coordination. These items can be excluded from a low headline price. If an old tank has leaked, cleanup costs depend on contamination and are not represented by ordinary tank-removal estimates.
Where homeowners can trim an oil-to-gas conversion bill
Request at least three itemized bids using the same equipment scope. Ask contractors to identify the exact burner model, installation labor, gas-line route, venting work, permits, tank handling, and startup tests. If the furnace is compatible, a retrofit may avoid the cost of a new appliance; if replacement is necessary, comparing standard-efficiency and higher-efficiency models can reveal whether the upgrade premium fits the expected use.
Clear access to the furnace and tank area before the crew arrives, and schedule before peak winter demand when possible. Avoid choosing a burner solely by its purchase price or omitting required venting and safety work. The safest savings come from controlling scope and comparing complete, code-compliant quotes.