AC repair
Furnace & heating
Heat pumps
Ductless mini splits
Carrier
Trane
GoodmanSeasonal 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.
Get your free estimateHVAC Company in Walnut Creek, CA
Walnut Creek sits far enough inland that its summers hit the upper 90s and its winter nights dip into the 30s, often within the same week. Homes here, especially the 1960s and 70s ranchers around Northgate and downtown, carry original ductwork and underpowered returns that make both cooling and heating work harder than it should. We’re Brandt HVAC, and we handle repair and maintenance for homes across Walnut Creek with a written price before any work starts and a written guarantee on every repair. Call (559) 245-8807 for service.
Why Walnut Creek Homes Are Different
The HVAC work we do in Walnut Creek doesn’t look like what you’d find in Oakland or Danville. The difference is the housing stock. Many homes built between the 1960s and 1980s still run on their original ductwork, and in the older sections near downtown, some of that ducting is wrapped in asbestos. That’s not something a homeowner should disturb, and it changes how we approach a repair or retrofit. We identify it, work around it, and plan replacement duct runs when necessary.
Newer developments in Rudgear and Northgate tend toward larger footprints with multi-zone systems, which means more dampers, more controls, and more points of failure. Add in the climate – dry 95-degree heat all summer, then 35-degree nights in winter – and a system that was marginal five years ago becomes an emergency in July or January. We also see undersized returns on many of these homes. A newer high-efficiency condenser simply cannot perform on a return that was sized for a 1979 system, and we will tell you that plainly rather than swap a unit and leave you with the same problem.
Styles & brands we work with
Our Main Walnut Creek Services
Most calls we take in Walnut Creek come down to two things: an air conditioner that quit on a hot afternoon, or a furnace that won’t fire on a cold morning. Each of these has its own page, but here’s a quick look at how we approach them locally.
AC Repair in Walnut Creek
When an AC unit fails in Walnut Creek, it’s rarely subtle. The inland heat loads a system hard, and common failures we see are failed capacitors, refrigerant leaks, and contactors burned out from constant cycling. Older ranchers with original ductwork often have airflow problems that trip safety limits or freeze coils. We diagnose the actual failure, price the repair in writing before any work begins, and guarantee the repair for 365 days. Read the full breakdown on our AC Repair in Walnut Creek page.
Furnace Repair in Walnut Creek
Winter nights in Walnut Creek drop into the 30s, and a dead furnace is not something to wait out. The furnaces in this area, many of them 15 to 25 years old, fail for predictable reasons: failed igniters, dirty flame sensors, and cracked heat exchangers. We stock igniters and flame sensors for major brands so many repairs are same-day. Every furnace repair includes a written guarantee covering parts and labor. Details are on our Furnace Repair in Walnut Creek page.
AC Maintenance in Walnut Creek
Maintenance matters more here than in coastal cities because the system runs hard for months. A tune-up in the spring catches refrigerant loss, failing capacitors, and dirty condenser coils before the first heat wave. We clean, test, and report on what we find, and you get a written list of what was checked. Pricing is flat, and our technicians are not paid on what they sell. The full scope is on our AC Maintenance in Walnut Creek page.
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 Walnut Creek
We service all major residential brands, including Trane, Lennox, and Rheem. Our trucks carry common repair parts for these systems so we can often complete a job without a second trip. For a full list of what we work on, see our brands.
See the difference
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These are the ranges Walnut Creek homeowners can expect for the work we do. Prices are written before work starts, so you always know the exact cost before you authorize anything.
| Service | Typical range in Walnut Creek |
|---|---|
| AC repair (diagnostic, parts, labor) | $150 – $650 |
| Furnace repair (diagnostic, parts, labor) | $150 – $700 |
| AC tune-up | $80 – $200 |
| Furnace tune-up | $80 – $200 |
| AC installation | $3,500 – $7,500 |
What pushes a repair toward the top of that range in Walnut Creek is usually age and ductwork. A 25-year-old system with an undersized return and asbestos-wrapped ducting takes longer to diagnose and often needs a retrofit fix, not just a part swap. Whatever the number is, you see it in writing before we touch a tool. No one starts work on a surprise.
Neighborhoods We Serve in Walnut Creek
We work across the full city, from the older ranchers near downtown to the newer homes up by Northgate and over in Rudgear. Each area has its own mix of system ages and ducting conditions, and we dispatch based on your actual location, not a regional queue.
- Downtown Walnut Creek
- Northgate
- Rudgear
- Walnut Heights
- Larkey Park area
Most repair calls in Walnut Creek can be scheduled within 24 hours, and we run emergency AC and furnace calls when the temperature makes waiting unsafe.
Service Area – Cities Near Walnut Creek
Brandt HVAC handles heating and cooling work across the central East Bay. If you’re just outside Walnut Creek, we also serve Pleasant Hill, CA, Martinez, CA, Danville, CA, and Oakland, CA. Each area has its own page with local pricing and conditions.
Serving Walnut Creek, CA - Our Local Coverage Area
We’re based in the Walnut Creek 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 Walnut Creek
Most repairs are scheduled within 24 hours. During heat waves or cold snaps, we prioritize no-heat and no-cooling calls because a failed system in a 95-degree house or a 35-degree house is genuinely dangerous. Call (559) 245-8807 and a live person answers.
Most repairs do not require a permit. System replacements and duct retrofits sometimes do, depending on the scope. We handle the paperwork and any required inspections as part of the job, and you’ll see the full plan in writing before we begin.
We service all major residential brands, including Trane, Lennox, Goodman, and Rheem. Our trucks carry common parts for these systems, which means many repairs are completed on the first visit rather than waiting on a parts order.
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 Walnut Creek Customers Say
"Very thorough check on the whole system before summer. Found a worn belt and swapped it for cheap."
- Jerome F."Frozen evaporator coil in July. Cleaned it, replaced a clogged filter, and checked the airflow. Gave me a simple schedule for filters."
- Hannah L."Furnace short cycled all winter. He found a dirty flame sensor and cleaned it. Twenty minutes and a small bill."
- George Q.