InstaBidsGas insert fireplace installation cost?
Natural Resources Canada, insert construction: “Inserts are used to convert existing wood-burning masonry or factory-built metal fireplaces to gas. The gas burner and simulated logs are contained in a special metal housing that fits into the existing fireplace cavity.”
Source: Natural Resources Canada, All About Gas Fireplaces, read 6 November 2026.
Natural Resources Canada, collinear venting: “Collinear venting uses two completely separate pipes: one to supply outside combustion air and the other to exhaust combustion products.”
Source: Natural Resources Canada, All About Gas Fireplaces, read 6 November 2026.
Context: all "Added or replaced built-in heating equipment" jobs
The survey figure below covers all "Added or replaced built-in heating equipment" jobs, not gas fireplace insert installation alone.
$5,000 was the median homeowner survey figure for data years 2021-2023 in the United States. For all jobs in “Added or replaced built-in heating equipment”, households reported a typical range (middle half of 1,176 American Housing Survey data points, the United States, 2021-2023) of $2,500 to $8,000.
Updated 2026-11-06
InstaBids is an AI-run marketplace for homeowners and property managers: describe a home job once, by chat or through your own AI assistant, add photos, and get multiple written quotes on the same scope, compared apples to apples, with no phone calls or home visits before you pick.
For homeowners, property managers, landlords and HOA boards.
| What was measured | Median | Typical range (middle half) |
|---|---|---|
| For all jobs in “Added or replaced built-in heating equipment”, households reported | a median of $5,000 | the typical range (middle half of 1,176 American Housing Survey data points, the United States, 2021-2023) was $2,500 to $8,000 |
How measured: hired-out finished jobs, survey-weighted, not adjusted for inflation. Source: U.S. Census Bureau, American Housing Survey 2023, data read 2 November 2026.
These figures are estimates from U.S. Census Bureau, American Housing Survey 2023, data years 2021-2023, read 2 November 2026, for the United States. They are not a quote, and they are not a promise of what any contractor on InstaBids will charge. Your price depends on your home, the materials and the contractor. Get written bids before you decide.
- Describe it onceBy chat, or through your own AI assistant, and add photos.
- Post it and send itContractors bid in writing on that scope.
- Compare line by lineEvery quote is written against the same scope.
- You chooseContact details stay hidden until you pick and they confirm.
At a glance
- direct vent, sealed combustionSan José: new gas fireplace typeCity of San José, Air Conditioning, Heating & Fireplaces, read November 6, 2026
- recorded property ownerPortland: homeowner doing mechanical workCity of Portland, Residential Mechanical Permits, read November 6, 2026
- fully installed, connected, and operationalPortland: system condition for final inspectionCity of Portland, Residential Mechanical Permits, read November 6, 2026
For your AI assistant
MCP connector · REST API · plain HTMLHand any of these to your assistant and it can help you write this job's request; you send the request yourself. What you type in the job box above goes into the prompt these buttons carry. The connector asks you to sign in to your InstaBids account the first time.
- MCP connector URL
https://instabids.ai/api/agent/mcp - Agent API (OpenAPI)
https://instabids.ai/openapi.json - Start-request link
https://instabids.ai/intake?trade=hvac&from=cost-fireplace-gas-insert-install&utm_source=us&utm_medium=page&utm_campaign=cost&page_type=cost&job=fireplace+gas+insert+install - Prompt for any AI, with your job
- ChatGPTOpens with the prompt
- ClaudeOpens with the prompt
- GrokOpens with the prompt
- GeminiCopies the prompt, then opens
Every page is plain HTML. Steps for every assistant: add to your assistant.
What gas fireplace insert installation includes
Where a quote below names a city or county, it is that office's own rule, shown as one example; the permit office for your home may set different rules.
| What the source says | Where it comes from |
|---|---|
| San José, gas piping: “Gas fireplaces or outdoor decorative gas appliances require a mechanical permit for running gas lines.” | City of San José, Air Conditioning, Heating & Fireplaces, read 6 November 2026. |
| Hastings, wall vent clearances: “If a gas fireplace is vented through a wall, exterior clearances shall be in accordance with the manufacturer’s installation instructions.” | City of Hastings, All-Inclusive Gas Fireplace, read 6 November 2026. |
On InstaBids, describe the insert gas line and wall vent clearances in the scope contractors bid on.
Line items a written bid should list
- Natural Resources Canada, venting scope: “Venting is required to remove combustion gases from the firebox to the outdoors. Three options are available: natural draft venting, power venting and direct venting.”
Source: Natural Resources Canada, All About Gas Fireplaces, read 6 November 2026.
- San José, new gas fireplaces: “Newly installed gas fireplaces shall be direct vent, sealed combustion type.”
Source: City of San José, Air Conditioning, Heating & Fireplaces, read 6 November 2026.
On InstaBids, specify the insert vent arrangement and combustion type for contractors to address in writing.
How to compare written bids like for like
Ask every contractor to bid in writing on the same line items listed above, then compare the written bids line by line.
Natural Resources Canada, comparing estimates: “When you are comparing the estimates, take into account the contractor's knowledge and experience, as well as the materials to be used.”
Source: Natural Resources Canada, All About Gas Fireplaces, read 6 November 2026.
Compare the insert materials and installation work described in the written bids you receive through InstaBids.
Do you need a permit for gas fireplace insert installation?
San José, new fireplace permit: “A permit is required for a new installation of a gas or electric fireplace.”
Source: City of San José, Air Conditioning, Heating & Fireplaces, read 6 November 2026.
San José, structural alterations: “Any alteration to walls and structural elements will require a building permit and submitting plans through Standard Plan Review (see the webpage section, "How to Apply.")”
Source: City of San José, Air Conditioning, Heating & Fireplaces, read 6 November 2026.
On InstaBids, include the fireplace permit and any structural alterations in the written job description.
Who pulls the permit for gas fireplace insert installation?
San José, permit applicant: “Whoever signs the building permit application is responsible and potentially liable for all activity under the permit.”
Source: City of San José, Air Conditioning, Heating & Fireplaces, read 6 November 2026.
Use the InstaBids scope to ask contractors to identify who will submit the fireplace permit application.
Can you do gas fireplace insert installation yourself, or do you need a pro?
Portland, homeowner mechanical work: “Homeowners can do their own mechanical work. The homeowner must be the recorded property owner by the County and not an LLC.”
Source: City of Portland, Residential Mechanical Permits, read 6 November 2026.
On InstaBids, describe which fireplace tasks you intend to handle yourself and which tasks contractors should bid on.
What inspections does gas fireplace insert installation need?
Portland, final mechanical inspection: “Get a final inspection to close the permit. The mechanical system must be fully installed, connected, and operational.”
Source: City of Portland, Residential Mechanical Permits, read 6 November 2026.
Hastings, final inspection: “Final inspection includes an inspection of smoke and carbon monoxide alarms throughout the home.”
Source: City of Hastings, All-Inclusive Gas Fireplace, read 6 November 2026.
On InstaBids, include the final mechanical inspection and alarm inspection in your insert installation scope.
Get written bids
Contractors who take part bid on one written scope card, so nobody visits before you see any prices.
Sources for the figures on this page
- U.S. Census Bureau, American Housing Survey 2023, https://www.census.gov/programs-surveys/ahs/data/2023/ahs-2023-public-use-file--puf-.html, read 2 November 2026. U.S. government work; no endorsement implied.
- City of San José, Air Conditioning, Heating & Fireplaces, www.sanjoseca.gov/businesses/development-services-permit-center/start-your-project/single-family-duplex-properties/air-conditioning-heating-fireplaces, read 6 November 2026.
- City of Hastings, All-Inclusive Gas Fireplace, www.hastingsmn.gov/home-living/building-and-remodeling-permits/residential-permits/all-inclusive-gas-fireplace/, read 6 November 2026.
- Natural Resources Canada, All About Gas Fireplaces, natural-resources.canada.ca/energy-efficiency/energy-star/all-about-gas-fireplaces, read 6 November 2026.
- City of Portland, Residential Mechanical Permits, www.portland.gov/ppd/residential-permitting/residential-mechanical-permits, read 6 November 2026.