Furnace & heating
AC repair
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 San Dimas, CA
San Dimas heating and cooling work has a specific shape: 1970s and 1980s single-family homes, Santa Ana-driven heat from May through October, and under-slab ductwork that time has not been kind to. Halden Heating & Air handles AC repair, AC installation, and furnace repair across the city with a written price before any tool comes off the truck. If your system fails on a 104-degree July afternoon, call (831) 607-5485 and a real person answers, not a voicemail tree.
Why San Dimas Homes Are Different
San Dimas’s housing stock is dominated by single-family detached homes built between the 1970s and 1990s, many of them two-story traditionals and ranch-style layouts with attic or closet air handlers. A high proportion of those homes sit on original slab-on-grade ductwork. In our experience, that means crushed, leaky, or rodent-damaged under-slab ducts are one of the most common root causes behind weak airflow and uneven cooling here. The area’s dry, shifting soils make the problem worse over time, and the fix often involves rerouting duct runs or sealing what’s reachable.
Climate compounds it. San Dimas gets hot, dry summers with frequent heat waves and Santa Ana winds that push AC demand hard from late spring into fall. Mild winters keep furnace repair secondary, but a two-story home without proper zoning often has a 10-degree temperature split between floors. In the Via Verde hills and nearby split-level neighborhoods, we regularly see dual-zone systems where one compressor serves both zones. When a zone damper fails, the upstairs bakes while the downstairs freezes, and crews who know this call pattern by address can diagnose it faster.
Styles & brands we work with
Our Main San Dimas Services
Most San Dimas homeowners reach out to Halden Heating & Air for one of two things: a cooling system that quit during a heat wave, or a system replacement conversation once repairs stop making sense. Furnace calls pick up every December.
AC Repair in San Dimas
Summer in San Dimas turns a weak capacitor or a failing compressor into a same-day problem. We stock common parts for Carrier, Trane, and Lennox systems so repair trucks roll ready. The heat here also exposes under-slab duct damage faster than anywhere else: a system that cycles constantly but never cools the back bedroom usually points below the floor, not at the condenser. A written price comes before any work begins, and every repair carries a written guarantee with a free second visit if it fails. AC Repair in San Dimas covers the full breakdown.
AC Installation in San Dimas
Original systems in San Dimas’s 1970s-1990s housing stock are at or beyond their expected lifespan. When a compressor finally gives out on a 20-year-old unit, replacement is usually the smarter money. We size the system to the home’s actual ductwork and layout, including proper zoning for two-story homes where single-zone retrofits leave upstairs rooms struggling. Installations get a fixed written price before a single part is ordered, a set install date, and the 365-Day Done Right Promise. AC Installation in San Dimas walks through the full options and rebates.
Furnace Repair in San Dimas
San Dimas winters are mild, which means furnaces often sit untouched for ten months and then fail on the first cold night. Common culprits here are dirty flame sensors, failing ignitors, and cracked heat exchangers in older units. We repair furnaces from Goodman, Rheem, and American Standard, among others, with the same upfront written pricing and written guarantee as our cooling work. If the repair fails within the coverage window, the second visit is free, no argument required. Furnace Repair in San Dimas 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 San Dimas
We service and install major manufacturers including Carrier, Trane, Lennox, and Goodman. Common replacement parts for these brands are stocked on our trucks so a San Dimas call rarely stalls waiting for a part to arrive. See our brands for the full list and what we stock.
See the difference
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After
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AfterPricing for HVAC Company in San Dimas, CA
| Service | Typical range in San Dimas |
|---|---|
| AC repair | $150 – $650 |
| Furnace repair | $150 – $700 |
| AC installation (full system) | $3,500 – $7,500 |
| Seasonal tune-up | $80 – $200 |
| Capacitor replacement | $150 – $300 |
| Refrigerant recharge (topping off the coolant your system needs to produce cold air) | $200 – $450 |
| Thermostat replacement or upgrade | $150 – $400 |
| Condensate drain clearing | $120 – $250 |
| Blower motor replacement | $350 – $650 |
| Flame sensor or ignitor replacement | $150 – $350 |
Two things push San Dimas pricing higher than the Los Angeles average: the prevalence of under-slab duct access work, which adds labor hours to cooling repairs, and two-story layouts that require longer line sets and more involved installs. Whatever the number is, you’ll see it in writing before any work begins. No door-step surprises, ever.
Neighborhoods We Serve in San Dimas
We run calls across all of San Dimas, from the hillside streets of Via Verde to the flatter ranch-style blocks near the 57. Our typical response time here is same-day for AC repair during peak season, with live arrival tracking so you know exactly when the tech pulls up.
- Via Verde
- Downtown San Dimas
- Bonita
- San Dimas Canyon
- Charter Oak
Service Area – Cities Near San Dimas
Beyond San Dimas, we cover neighboring foothill communities with the same pricing and visibility guarantees. Our crews serve La Verne, CA, Glendora, CA, Covina, CA, and Azusa, CA regularly. Dispatch and scheduling are coordinated from our Los Angeles office.
Serving San Dimas, CA - Our Local Coverage Area
We’re based in the San Dimas 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 San Dimas
Same-day AC repair is our standard during cooling season, especially between May and October when heat waves hit. Book online and you’ll get a live arrival time you can track to the door, not a four-hour window. Call (831) 607-5485 for a real-time answer.
Most AC and furnace replacements in San Dimas require a permit through the city’s building department, which we handle as part of installation. Repairs and maintenance generally don’t. We’ll confirm the specific permit path for your address before any work is scheduled.
Yes. Our phones are answered by a live person 24/7, including weekends and holidays, so a failed AC on a Saturday afternoon in July gets the same response as a Tuesday morning call. There’s no overtime surcharge for weekend emergency dispatch.
Call (831) 607-5485 for a free estimate on any HVAC work in San Dimas. You’ll get a real person, a written price, and a live arrival time before anyone steps on your property.
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 San Dimas Customers Say
"Booked a furnace tune-up in the app, got a reminder, then a live ETA text. Tech was on time, cleaned the burners, and sent a short report to my phone."
- Greg N."Filter advice was useful and free. He showed me which filter size to buy and how often to swap it."
- Flora V."New AC install. Quotes arrived in the app with three options. Install was done in a day."
- Tonya S.