Seasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
HVAC Company in Larkspur, CA
Dalton Heating & Air handles heating and cooling repair and installation across Larkspur, CA. The work here runs into specific conditions: older homes with retrofitted ductwork, steep lots that make equipment access tight, and summer temperature swings between the flats and the hills. We give every Larkspur homeowner a written price before any work starts, and every repair carries a full-year written guarantee. If a repair fails inside that year, we come back at no charge. Call (361) 306-9515 for a straight answer.
Why Larkspur Homes Are Different
Larkspur sits in a valley that runs from the bay up toward Mount Tamalpais, and the HVAC problems change with the elevation. Homes near Madrone Canyon and the Baltimore Park neighborhood deal with afternoon heat that climbs into the 90s in summer because the hills block the bay breeze. Down along Magnolia Avenue and around the flats, homes run cooler and damper, which means different equipment sizing than what a flat lot in central Marin needs.
A lot of Larkspur’s housing stock dates back to the 1940s through 1970s. That means undersized ductwork, original electric panels still feeding modern heat pumps, and crawlspaces that run damp. Retrofits are common. We regularly see furnaces shoehorned into closets and attic air handlers with barely 18 inches of clearance. Larkspur’s tree cover also drops needles and leaves onto condensing units, so coil cleaning matters more here than in exposed hillside subdivisions.
Permitting goes through the town of Larkspur, and exterior equipment changes often need plan review. For homeowners in the downtown historic district, there can be additional design review. We handle the permit paperwork on installs, so the homeowner never has to sit at the planning counter.
Our Main Larkspur Services
These are the two calls Larkspur homeowners make most often, and each has its own page with pricing and detail.
AC Repair in Larkspur
When a Larkspur AC quits in August, it fails on the worst day of the year. The homes on the west side of town near the hills get the hottest because the marine layer burns off first there. We diagnose the system, put the repair price in writing before touching a tool, and most AC fixes run $150 – $650 depending on the part. We stock common capacitors, contactors, and fan motors on the truck. Read the full breakdown on our AC Repair in Larkspur page.

Heat Pump Installation in Larkspur
Larkspur homes are moving toward heat pumps because they handle both heating and cooling in one unit, which fits the climate here. Electrification rebates knock the cost down. Installation means a load calculation first, not a rule-of-thumb guess, because a house on a shaded lot near Larkspur Creek needs different sizing than one up on a sunny hillside. We install and service Trane, Lennox, and Rheem equipment. Details on Heat Pump Installation in Larkspur.

Furnace Repair in Larkspur
Larkspur winters are mild, but a dead furnace still makes a house uncomfortable fast, especially nights in the canyon areas where it drops into the 30s. Common calls are failed igniters, blower motors, and gas valves. Furnace repair in Larkspur usually runs $150 – $700. Every furnace repair leaves with a written one-year guarantee, and if the same part fails again inside that year, the return visit is free. See Furnace Repair in Larkspur for full pricing.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Larkspur
We service Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. Common parts for Trane, Lennox, and Goodman units are stocked on our trucks so most Larkspur repairs finish same-day. Factory training covers all nine brands; see our brands page for what that means on the job.
Pricing for HVAC Company in Larkspur, CA
These are the ranges we quote in Larkspur. The price is in writing before work starts, on every job, without exception.
| Service | Typical range in Larkspur |
|---|---|
| AC Repair | $150 – $650 |
| Furnace Repair | $150 – $700 |
| AC Installation | $3,500 – $7,500 |
| Tune-Up | $80 – $200 |
What pushes a Larkspur price up? Equipment access on steep lots, older ductwork that needs modification, or a unit that has not been maintained and needs multiple failed parts replaced. Every quote is fixed before we start, so the number on the paper is the number on the invoice.
Neighborhoods We Serve in Larkspur
We work across Larkspur, from the flats to the hills. Typical response time is same-day for repair calls, usually within a two-hour window. These are the neighborhoods we run calls in most often:
- Downtown Larkspur and Magnolia Avenue corridor
- Baltimore Park
- Madrone Canyon
- Palm Hill
- Larkspur Marina area
Service Area – Cities Near Larkspur
Dalton Heating & Air serves Larkspur and the surrounding Marin County communities. For homeowners just outside our Larkspur footprint, we also cover Kentfield, CA, Corte Madera, CA, San Rafael, CA, and Mill Valley, CA. Dispatch and scheduling are coordinated from the San Francisco Bay Area office, and crews run locally in Larkspur.
Serving Larkspur, CA - Our Local Coverage Area
We’re based in the Larkspur area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About HVAC Company in Larkspur
Same-day for repair calls, usually inside a two-hour window. We answer the phone live, 24/7, so you’ll know your arrival window when you call, not after leaving a voicemail.
Exterior equipment changes and many installs require a permit through the town of Larkspur. We pull the permit and handle the paperwork. Most repair work does not require a permit, but we’ll tell you either way before work begins.
Every repair is guaranteed in writing for a full year. If the same part or workmanship fails inside that time, we return and fix it at no charge. This is The Garrison Standard, and it applies to every Larkspur job.
Need a repair or a quote in Larkspur? Call (361) 306-9515 for a free estimate, a straight answer, and a written price before any work begins.
What happens when you call
- 1A real person answersNo phone trees - talk to a local hvac pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Larkspur Customers Say
"Installed a heat pump to replace an old oil furnace. Three clear quotes and the install crew was tidy."
- Cheryl B."Tech arrived in uniform right on time. AC wasn't cooling, found a failed capacitor, and replaced it in twenty minutes. The owner is a veteran and the company runs like it."
- Frank O."Blower motor died on the coldest night. They had the part on the truck and had us warm again the same day."
- Sandy G.







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