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 Lafayette, CA
Dalton Heating & Air is the HVAC company Lafayette homeowners call when they want the price in writing before the first tool comes off the truck. Heating and cooling systems here work hard through foggy, damp winters and stretches of 90-plus degree summer days, which makes failures feel urgent fast. Call (361) 306-9515 any hour and a live person answers, not a voicemail queue. We service all nine major residential HVAC brands and stand behind every repair with a full-year written guarantee.
Why Lafayette Homes Are Different
Housing stock in Lafayette runs older than most of Contra Costa County. Plenty of homes, particularly in the Happy Valley area and along Reliez Valley Road, were built in the 1950s and 1960s. That means smaller return-air plenums than modern code expects, ductwork that has absorbed decades of use, and electrical panels that were never sized for today’s heat pump loads. The terrain makes a difference too. Many properties sit on hillsides with tight side yards, so condenser placement, drainage, and code-required clearances take real planning, not a generic install template.
The microclimate matters as well. Lafayette sits in the Lamorinda corridor, where east-facing hillsides bake in the afternoon sun and lower pockets near the creek line stay damp and cool longer. We see a real split across town: homes up in the hills run air conditioning harder across July and August, while homes near Happy Valley Road and the downtown flatlands deal with more humidity in the crawlspace and furnace cabinet. Equipment that runs clean on one street can be fighting moisture and short cycling on another. All of that changes how we size, place, and maintain a system, and it’s exactly the local knowledge you get when Dalton Heating & Air rolls up in Lafayette, CA.
Our Main Lafayette Services
Most calls we take in Lafayette come down to one of three things: a cooling system that quit or is limping along, a furnace that will not hold a flame, or a homeowner who wants to move off gas or an aging AC and switch to a heat pump. Each of those gets its own page with Lafayette pricing and what to expect.
AC Repair in Lafayette
When your air conditioning stops keeping up with an August afternoon in Lafayette, we diagnose the problem and put the repair price in writing before any work begins. Our techs are factory-trained on Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. Every air conditioning repair includes a written guarantee for a full year, and if the fix does not hold, we come back at no charge. See the full breakdown on our AC Repair in Lafayette page.

Heat Pump Installation in Lafayette
Heat pumps work well in Lafayette because they handle both the valley heat and the damp, cool winters without a separate furnace. The job involves a load calculation, an honest look at your ductwork and electrical panel, and a fixed installation date with a written price that does not change at the door. We walk you through available rebates and do the paperwork, and every install carries our 365-Day Done Right Promise. Details are on the Heat Pump Installation in Lafayette page.

Furnace Repair in Lafayette
Furnace failures in Lafayette often trace back to damp air, older venting, or wear on the heat exchanger from thousands of short cycles. We diagnose the issue plainly, explain what caused it in terms you can repeat, and hand you a written price before we touch a single fastener. The repair is guaranteed in writing for a full year. When a furnace leaves you without heat on a cold, foggy night, call (361) 306-9515. We answer live. More on that at Furnace Repair in Lafayette.

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 Lafayette
Our Lafayette trucks are stocked with common parts for Goodman, Rheem, York, and Daikin systems, which cuts down the back-and-forth that turns a simple repair into a two-visit ordeal. For less common parts, our supply runs within the Bay Area keep most Lafayette repairs done same-day or next morning. See the full list on our brands page.
Pricing for HVAC Company in Lafayette, CA
| Service | Typical range in Lafayette |
|---|---|
| AC repair | $150 – $650 |
| Furnace repair | $150 – $700 |
| AC installation | $3,500 – $7,500 |
| Tune-up | $80 – $200 |
Prices in Lafayette push toward the higher end when equipment sits on a hillside with tight access, when the job needs code upgrades to an older electrical panel, or when a home’s ductwork was sized for a smaller system decades ago. Whatever the total, Dalton Heating & Air puts every number in writing before any work starts, so the quote you approve is the price you pay.
Neighborhoods We Serve in Lafayette
Our crews run all over Lafayette, CA, and know the streets and terrain well enough to quote accurately over the phone more often than not. Typical response time across Lafayette is same-day for emergency calls and within one to two days for scheduled maintenance.
- Downtown Lafayette
- Happy Valley
- Reliez Valley
- Burton Valley
- Trails area
Service Area – Cities Near Lafayette
Beyond Lafayette, our crews cover the surrounding Lamorinda and central Contra Costa communities, including Walnut Creek, CA, Orinda, CA, Moraga, CA, and Pleasant Hill, CA. Dispatch is coordinated from our San Francisco Bay Area office, but scheduling and repairs are handled by local Lafayette crews who know the area and the homes here.
Serving Lafayette, CA - Our Local Coverage Area
We’re based in the Lafayette 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 Lafayette
We aim for same-day arrival on emergency heating and cooling calls across Lafayette. Calls are answered live around the clock, so you’ll know your window before you hang up, not two hours later in a callback.
Most installations and some major repairs in Lafayette require a permit through the city. We pull the permits, schedule the inspection, and handle the paperwork as part of the job. That’s standard on our installs, and the written price includes it.
Yes. We service every major residential brand regardless of who installed it, and we see a lot of systems in Lafayette that were put in years ago by companies no longer in business. If it’s a Goodman, Rheem, York, Daikin, Carrier, Trane, Lennox, Bryant, or American Standard, our techs are factory-trained on it. Call (361) 306-9515 to schedule.
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 Lafayette Customers Say
"Blower motor died on the coldest night. They had the part on the truck and had us warm again the same day."
- Sandy G."Changed the filter size and added a better filter rack. Simple and useful advice."
- Rhonda C."Honest, direct people. Told me what the furnace needed and nothing more, and the bill matched."
- Eliza S.







Before
After
Before
After
Before
After