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.
Before
After
Before
After
Before
AfterHVAC Company in Lafayette, CA
Most Lafayette homeowners pay between $150 and $700 for HVAC repairs and $3,500 to $7,500 for a full AC installation, with same-day service available when a system fails during summer heat. Coldharbour Heating & Air handles AC repair, furnace repair, and AC installation across Lafayette, where the inland valley climate and 1950s-1970s housing stock create challenges you won’t find in coastal East Bay cities. Our technicians are trained on nine major brands including Goodman, Rheem, and York, and every repair comes with a written 365-Day Done Right Promise. Call (817) 402-2972 to speak with a live person any time, day or night.
Our Main Lafayette Services
These are the three services Lafayette homeowners call us about most. Each has its own dedicated page with local pricing, common failures, and what to expect when we arrive.
AC Repair in Lafayette
When afternoon temperatures push past 100°F in the Lamorinda valley, a failed compressor or refrigerant leak isn’t uncomfortable, it’s urgent. We stock capacitors, contactors, and hard-start kits for the most common systems found in Lafayette’s older ranch homes, and we carry replacement coils for Goodman and Rheem units that were retrofitted onto original heating-only furnaces. Most repairs are completed in a single visit, with a written price before we start and a 365-day guarantee when we leave. AC Repair in Lafayette
Furnace Repair in Lafayette
Lafayette winters are mild and wet, so furnaces here don’t accumulate the runtime hours you’d see in the Midwest. What we do see are failed igniters on 1990s-era units, cracked heat exchangers in hillside homes where short-cycling has stressed the metal, and blower motors strained by undersized return ducts. Our technicians test combustion safety on every call and won’t clear a system until we’re certain it’s venting properly. Furnace Repair in Lafayette
AC Installation in Lafayette
New AC installation in Lafayette almost always involves more than swapping equipment. The original galvanized ductwork in most 1950s-1970s homes was sized for heating only, and retrofitting a modern cooling coil requires either duct remediation or a complete redesign. We perform Manual J load calculations for every install, account for the valley’s extreme heat exposure, and specify systems that can actually move enough air through existing or upgraded trunk lines. AC Installation 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.
Why Lafayette Homes Are Different
Lafayette sits in the inland Lamorinda valley where summer afternoons routinely hit 95-105°F, often 20-30°F hotter than Oakland or Berkeley just 15 miles west. Yet most of its housing stock was built in the 1950s-1970s, an era when Bay Area homes were rarely designed with central air conditioning in mind. This gap between extreme inland heat exposure and aging, undersized or cooling-free original systems makes proper Manual J load calculations and duct remediation the defining challenge of HVAC work specifically in Lafayette.
The local housing tells the rest of the story. Post-WWII ranch-style homes on large, wooded lots dominate the flat areas, many originally equipped with heating-only forced-air systems or no ductwork at all. Decades of additions and bonus rooms were frequently never tied into the central system. Hillside custom homes built from the 1980s onward add multi-zone complexity and awkward duct routing across steep, irregular attic and crawl spaces.
A distinctive pattern we encounter: a large share of Lafayette’s 1950s-60s ranch homes were retrofit with add-on cooling coils dropped onto furnaces sized only for heating. The original galvanized ductwork runs are too small in cross-section to deliver adequate static pressure for the coil. Technicians frequently find systems that short-cycle or fail to cool the back bedrooms, complaints that get blamed on the equipment rather than the undersized trunk lines behind the original builder’s sheet metal.
Shielded from the marine layer by the Coast Range, Lafayette’s valley location traps afternoon heat and regularly produces triple-digit temperatures during summer heat events and Diablo wind episodes. Annual run-hours are overwhelmingly dominated by cooling demand, making AC sizing and duct efficiency far more consequential than furnace selection.
Brands We Service in Lafayette
Our technicians are trained to service Goodman, Rheem, York, Daikin, Carrier, Trane, Lennox, Bryant, and American Standard residential systems. We stock common capacitors, contactors, igniters, and blower motors for Lafayette’s most prevalent brands, and we can typically source same-day or next-morning parts for less common units. Dispatch and scheduling are coordinated from our San Francisco Bay Area office, with crews serving Lafayette locally.
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 |
What pushes Lafayette jobs toward the higher end: duct remediation on older ranch homes, hillside access complications, and the need for proper load calculations on homes that have never had adequate cooling. What keeps them lower: straightforward component swaps on accessible equipment. Either way, you’ll get a written price before we touch a tool, and that price doesn’t change when we finish.
Neighborhoods We Serve in Lafayette
We work across Lafayette’s full range of terrain and housing eras, from flat valley ranches to hillside custom builds. Most calls are answered with same-day or next-day scheduling.
- Reliez Valley
- Downtown Lafayette
- Happy Valley
- Burton Valley
- Upper Happy Valley
Service Area – Cities Near Lafayette
Our crews regularly cross city lines for jobs that cluster near Lafayette’s borders. We also serve Walnut Creek, CA to the east, Orinda, CA to the west, Moraga, CA to the south, and Pleasant Hill, CA to the northeast. The same written pricing, arrival windows, and 365-Day Done Right Promise apply in every city we cover.
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 keep emergency slots open during summer heat events, and our live dispatchers answer phones 24 hours a day. Most Lafayette calls are scheduled same-day or next-day, with true emergencies prioritized. Call (817) 402-2972 and we’ll give you a firm arrival window.
Most AC installations and furnace replacements require a Lafayette building permit and inspection. We handle the permit paperwork as part of the install process, and we coordinate inspections so you don’t have to chase down the city yourself. Repairs typically don’t require permits.
Yes. Many Lafayette homes, especially 1950s-60s ranches, were built without ductwork. We evaluate whether ducted mini-splits, high-velocity systems, or traditional duct installation makes sense for your layout and budget, with a written price for each option 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 Lafayette Customers Say
"The repair was done well and quickly. Scheduling over the phone was a little clunky and I got transferred twice, but the tech himself was great and on time."
- Brett Haygood"Furnace was short cycling all winter. They diagnosed a bad sensor instead of condemning the whole unit like I feared. Cheap fix, honest call."
- Russ Tiedemann"Thermostat and a weak blower. Fixed both in one visit, explained the guarantee, and didn't leave a mess. I've already recommended them to my neighbor."
- Natalie Esposito