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 Martinez, CA
Dalton Heating & Air handles HVAC work across Martinez with written pricing, on-time arrival, and a one-year written guarantee on every repair. Most Martinez homes we visit were built between the 1950s and 1990s, which means furnaces and AC units are often past their halfway point and working against the Carquinez Strait’s summer heat and winter damp. If you need service in Martinez, call (361) 306-9515 and you’ll reach a live person, not a voicemail queue.
Why Martinez Homes Are Different
Martinez sits in a microclimate shaped by the Carquinez Strait. Summers bring stretches of 90-plus degree days, but nights cool down fast when the marine layer rolls through. That swing means cooling systems here get cycled hard during the day, then sit idle at night, which is harder on capacitors and contactors than steady, all-day heat further inland.
The housing stock changes the work, too. Downtown Martinez and the older neighborhoods around Alhambra Avenue and Main Street have a lot of homes from the 1940s through the 1960s with narrow attic access, older ductwork, and electrical panels that were never sized for modern heat pump loads. Meanwhile, the hillside subdivisions above Highway 4 and toward Virginia Hills were built later, with taller rooflines and longer refrigerant line runs. Each setup changes how we size, route, and brace the work, and it’s why we always send a background-checked, uniformed tech who sees the house before quoting the job. The Garrison Code requires it: arrive inside the stated window, price in writing before starting, do the job by the book, and leave the site clean.
Our Main Martinez Services
Martinez homeowners call on us most for two jobs: getting an AC unit cooling again during a summer heat wave, and putting in a heat pump to replace a furnace-and-AC pair that’s near the end of its life. Here’s how each one works in Martinez specifically.
AC Repair in Martinez
When a Martinez AC quits in July, the failure is usually one of three things: a blown capacitor, a refrigerant leak, or a condenser fan motor that seized. On older homes near the downtown grid, we also see breakers tripping when aging panels can’t hold the load. We diagnose the whole system, explain the trade terms in plain words (a capacitor is the starter for the motor, a refrigerant charge is the cooling fluid the system needs), then put the repair price in writing before any work starts. The repair is guaranteed in writing for a full year. If it fails in that time, we return at no charge. That’s the 365-Day Done Right Promise, and it applies to every AC repair we do here. AC Repair in Martinez covers the details and pricing.

Heat Pump Installation in Martinez
Martinez’s mild-but-damp winters make it a good candidate for a cold-climate heat pump, but the installation has to account for the microclimate. Units on hillside homes exposed to the strait wind need proper anchoring and coil protection, and houses in the older flatlands often need an electrical panel check before we can size the system correctly. We walk you through load calculation, brand selection, and what the written fixed price includes before you commit. We install Trane, Lennox, Goodman, and Rheem units and handle the permit paperwork for Martinez jobs. Heat Pump Installation in Martinez goes deeper on pricing and sizing.

Furnace Repair in Martinez
Martinez winters are rarely brutal, but the damp, salty air off the strait is rough on heat exchangers, ignitors, and flame sensors. A furnace that worked fine in March may short-cycle or fail to light by December because corrosion finally broke the connection. We stock common parts for Trane and Lennox furnaces in our local tech vehicles and most Benicia and Martinez furnace repairs are done same-day. Every furnace repair in Martinez gets a written guarantee for a full year. If the part fails inside that window, the return visit is free. Furnace Repair in Martinez has the full breakdown.

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 Martinez
Our techs are factory-trained on Trane, Lennox, and Rheem, among others, and we carry the most common capacitors, ignitors, and contactors for those brands on our Martinez-area trucks. That means most repair calls finish in one visit instead of two. See our brands for the full list.
Pricing for HVAC Company in Martinez, CA
| Service | Typical range in Martinez |
|---|---|
| AC repair (most common parts) | $150 – $650 |
| Furnace repair (most common parts) | $150 – $700 |
| Seasonal tune-up (AC or furnace) | $80 – $200 |
| AC installation (full system) | $3,500 – $7,500 |
Your price lands at the high end of that range when the failure is a compressor or a heat exchanger, when the system is on a steep hillside lot with difficult access, or when panel and ductwork changes are needed to bring the setup to code. The price is always in writing before any work starts, on every Martinez job, without exception.
Neighborhoods We Serve in Martinez
We work all over Martinez, from the flat streets near downtown and the waterfront up into the hills above Highway 4. Response time across Martinez is typically same-day for repairs, and we carry most common parts on the truck to avoid a second trip. Neighborhoods we regularly serve include:
- Downtown Martinez
- Virginia Hills
- Mountain View
- Hidden Lakes
Service Area – Cities Near Martinez
Our Martinez crews also cover neighboring communities along the 680 and Highway 4 corridors. If you’re in Pleasant Hill, CA, Benicia, CA, Lafayette, CA, or Concord, CA, the same written-price, written-guarantee standard applies. Dispatch and scheduling are coordinated from the brand’s San Francisco Bay Area office; techs serve Martinez and these surrounding cities locally.
Serving Martinez, CA - Our Local Coverage Area
We’re based in the Martinez 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 Martinez
AC and furnace repair calls in Martinez are typically same-day, and we carry common parts for Trane, Lennox, and Rheem on the truck so most jobs finish in one visit. Installations are scheduled for a set date at a written fixed price, not a same-day rush. Call (361) 306-9515 for current availability.
Most furnace and AC replacements in Martinez require a building permit, and we handle that paperwork as part of the installation price. Repairs like a capacitor or ignitor swap generally do not require a permit. We’ll tell you which category your job falls into before any work starts.
We cover the whole city, from downtown and the waterfront up through the hillside neighborhoods and out toward the Highway 4 corridor. If you’re in Martinez, we’ll come out. The price you’re quoted is the price you pay, in writing, on every job.
For a free estimate on any HVAC work in Martinez, call (361) 306-9515. You’ll reach a live person 24/7, and the price will be in writing before we start.
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 Martinez Customers Say
"Honest, direct people. Told me what the furnace needed and nothing more, and the bill matched."
- Eliza S."Coil cleaning and a refrigerant check before summer. AC has never been this cold."
- Marty D."Good communication, tidy, and disciplined work. Taped off the floor and wiped the unit down."
- Karen J.







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