HVAC in San Diego, CA: written quotes on one scope

For a San Diego heating or air-conditioning job, request written quotes against one scope.San Diego's permit page sets out a rule that names air-conditioning as permit work (read 17 October 2026), quoted below.San Diego averages 1018.7 cooling degree days a year (NOAA normals 1991-2020, San Diego Montgomery Fld station).

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.

By InstaBids editorial team with AI research agents. Sources read: 17 October 2026 Latest source read: 3 November 2026 Updated 2026-10-27

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.

For your AI assistant

MCP connector · REST API · plain HTML

Hand 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 URLhttps://instabids.ai/api/agent/mcp
Agent API (OpenAPI)https://instabids.ai/openapi.json
Start-request linkhttps://instabids.ai/intake?trade=ac&from=hire-hvac--ca--san-diego&utm_source=us&utm_medium=page&utm_campaign=hire&page_type=hire&place=san+diego%2C+CA#job=heating%20or%20air-conditioning%20job
Prompt for any AI, with your job

Open it in your assistant

Add InstaBids as a connector

Every page is plain HTML. Steps for every assistant: add to your assistant.

Key facts for hiring an HVAC contractor in San Diego

San Diego's permit page “Minimum Standards for Renewal of Roof Covering”: a permit rule for re-installing roof-mounted equipment removed to renew roof covering (read 17 October 2026), quoted below.
San Diego's permit page “What Permits Do I Need?”: a rule that names mini-split systems as permit work (read 17 October 2026), quoted below.
Utility gas heats 51.1% (±0.6 points) of San Diego's occupied homes (Census ACS 2020-2024).
San Diego averages 1320.3 heating degree days a year (NOAA normals 1991-2020, San Diego Montgomery Fld station).

How to get written quotes on one scope

Describe the job once, using the scope checklist below, built from what we found for San Diego.
Post it on InstaBids and send it.
Every quote is written against the same scope, so they compare line by line.
You choose who gets your number.
Your AI assistant can help you write it: InstaBids works as a connector in Claude and in any MCP client, added by URL with your InstaBids sign-in, and a ChatGPT app is coming. You send the request yourself. Connect an assistant

Your written scope for a heating or air-conditioning job in San Diego

The equipment: capacity, efficiency rating and model, in writing
Gas line and venting checks if the system burns gas, as many of San Diego's homes do
Whether your air-conditioning falls outside the San Diego permit exemption quoted below, and if it needs a permit, who pulls it
Who pulls the San Diego permit for re-installing roof-mounted equipment removed to renew roof covering, and when the inspection is booked
Whether your job (mini-split systems) falls outside the San Diego permit exemption quoted below, and if it needs a permit, who pulls it
Removal and disposal of the old parts or materials
Warranty terms on parts and labor, in writing

Do you need a permit for a heating or air-conditioning job in San Diego?

San Diego's permit page (read 17 October 2026): “This permit is required for the installation, alteration, replacement or repair of addition or replacement of heating, ventilating, air conditioning, or refrigeration system, and to comply with the minimum standards necessary to safeguard life or limb, public health, property and welfare.” Open San Diego's source page

San Diego's permit page “What Permits Do I Need?” (read 17 October 2026): “The repair only of these systems does not require a permit.” Open San Diego's source page

San Diego's permit page “Minimum Standards for Renewal of Roof Covering” (read 17 October 2026): “Where existing roof-mounted equipment or their associated duct/piping system are removed in order to renew roof covering, a mechanical or plumbing permit is required to re-install the same or new equipment and their associated duct/piping system.” Open San Diego's source page

San Diego's permit page “What Permits Do I Need?” (read 17 October 2026): “The following installations do not require plans but will require a Simple MEP Permit when installing or replacing these systems in single-family homes and duplex buildings.” “Mini-Split System (Condenser Unit or Heat Pump and Air Handler)”. Open San Diego's source page

What in San Diego changes the job

Ask which heat source the quoted equipment will use.

NOAA explains: “The degree day is one measure of the weather related energy demand.” Ask for equipment sized to that climate.

Median hourly wage for Heating, Air Conditioning, and Refrigeration Mechanics and Installers in the San Diego-Chula Vista-Carlsbad, CA area, May 2025: $36.00 (U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics).

This is what workers in this occupation are paid per hour. It is not what a contractor charges for a job.

How does InstaBids work?

InstaBids does not hold payment for the work; you pay the contractor directly on the terms of the bid you accepted.

How is InstaBids different?

Each bidder appears under a stable label such as Contractor A, so you judge the work, not the brand.

Contact details stay hidden until the homeowner picks a contractor and they confirm the connection.

The contact-detail filter can miss disguised contact details.

Sources for the facts on this page

San Diego permit page, read 17 October 2026: www.sandiego.gov
San Diego permit page “Minimum Standards for Renewal of Roof Covering”, read 17 October 2026: www.sandiego.gov
San Diego permit page “What Permits Do I Need?”, read 17 October 2026: www.sandiego.gov
BLS Occupational Employment and Wage Statistics (series OEUM004174000000049902108), May 2025, read 17 October 2026: api.bls.gov
NOAA NCEI U.S. Climate Normals 1991-2020, read 17 October 2026: www.ncei.noaa.gov
U.S. Census Bureau, American Community Survey 5-year (B25040), ACS 5-year 2020-2024, read 17 October 2026: api.census.gov
NOAA CPC degree-day definition, read 3 November 2026: www.cpc.ncep.noaa.gov

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.