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 San Dimas, CA
Dalton Heating & Air is the San Dimas HVAC company that puts the price in writing before a single tool comes off the truck. Our crews work on the housing stock that defines this foothill community: homes built from the 1960s through the 2000s, many with aging condensers, attic furnaces, and duct runs that were never quite sized right. Most San Dimas repair calls we field are $150 – $650 for AC work and $150 – $700 for furnaces. Call (361) 306-9515 and a real person picks up, 24/7.
Why San Dimas Homes Are Different
San Dimas sits right where the San Gabriel Valley starts climbing toward the San Gabriel Mountains. That means real temperature swings: summer afternoons in the high 90s, winter nights that dip into the 40s. Homes here work through both ends of that range in a single year, and systems that were sized for milder averages get pushed hard.
The housing stock reflects the city’s growth pattern. A lot of the original subdivision homes in San Dimas were built in the 60s and 70s, which means galvanized ductwork, original slab foundations, and electrical panels that sometimes need a subpanel before a new heat pump can go in. Newer developments up toward the hills bring a different set of considerations: multi-zone layouts, higher ceilings, and HOAs with equipment-screening rules. We speak both languages.
The foothill location also means dust. The Santa Ana winds carry grit down through the canyons, and that fine dust settles into condensers and clogs filters faster than in coastal cities. A clean coil and a fresh filter do more for system life in San Dimas than almost anything else. It is the first thing our technicians check.
Our Main San Dimas Services
Three jobs dominate the call sheet in San Dimas: AC repair in summer, furnace repair in winter, and heat pump installation year-round. Each has its own page here, so you can get straight to the details that matter.
AC Repair in San Dimas
When your AC quits on a 98-degree afternoon, you want a diagnosis that is actually diagnostic, not a sales pitch. Our technicians check refrigerant charge, capacitor condition, contactor wear, airflow, and the duct static before they recommend anything. In San Dimas, we see a lot of failed capacitors on older units, clogged condensers from Santa Ana dust, and refrigerant leaks on systems over 10 years old. Most AC repairs here fall between $150 and $650. AC Repair in San Dimas
Heat Pump Installation in San Dimas
A heat pump handles both cooling and heating, and for many San Dimas homes it is the right long-term move, especially if your furnace is nearing the end of its service life. The foothill climate is well suited to heat pumps: winters are rarely cold enough to need a gas backup, and summers are exactly what heat pumps handle best. We size the system with a load calculation, never a guess. Heat Pump Installation in San Dimas
Furnace Repair in San Dimas
Furnace problems in San Dimas tend to surface on the first cold snap of the year, when a system that has been idle for months gets asked to work again. Ignitors, flame sensors, and gas valves are the common culprits, especially on older units in the city’s original subdivisions. We carry parts for all major brands on the truck, so most furnace repairs are done in one visit, not two or three. Furnace Repair in San Dimas
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 our brands across the board: Goodman, Rheem, York, and Daikin included, along with Carrier, Trane, Lennox, Bryant, and American Standard. Our trucks carry the filters, capacitors, and common replacement parts for all of them, which keeps turnaround tight on most San Dimas repair calls.
Pricing for HVAC Company in San Dimas, CA
| Service | Typical range in San Dimas |
|---|---|
| AC diagnostic and minor repair | $150 – $250 |
| AC capacitor or contactor replacement | $180 – $300 |
| AC refrigerant leak repair and recharge | $350 – $650 |
| Furnace diagnostic and minor repair | $150 – $250 |
| Furnace ignitor or flame sensor replacement | $180 – $300 |
| Furnace blower motor replacement | $400 – $700 |
| AC installation (standard system) | $3,500 – $7,500 |
| Seasonal tune-up | $80 – $200 |
What pushes a repair to the top of those ranges in San Dimas is usually age and access: older systems with obsolete parts, attics with tight clearance, or units that haven’t had regular maintenance. Whatever the number, it is in writing before we start. If the repair fails within the first year, we come back at no charge.
Neighborhoods We Serve in San Dimas
Dalton Heating & Air covers the full San Dimas area, from the older grid streets near downtown to the newer developments up toward the foothills. Our response time across the city is typically within a few hours for AC and furnace calls.
- Downtown San Dimas
- San Dimas Canyon
- Via Verde
- Brackett Field area
- Bonita area
Service Area – Cities Near San Dimas
Beyond San Dimas, our crews cover the neighboring foothill and valley communities. Homeowners in La Verne, CA, Glendora, CA, Covina, CA, and Azusa, CA reach us through the same 24/7 live line at (361) 306-9515. If you are close to the San Dimas line, call and we will tell you straight whether you are in our coverage area.
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
Most AC and furnace calls in San Dimas are handled within a few hours. We dispatch from our Los Angeles office and run crews into the Foothill corridor every day. Emergency no-cool and no-heat calls are answered by a live person at any hour, and we get someone out as fast as the schedule allows that same day.
That depends on your specific neighborhood. Some newer developments in the San Dimas foothills have equipment-screening rules, especially for visible outdoor units. We can walk you through what your HOA will want to see, and we are used to working around those requirements on installation jobs.
Every repair we do comes with a guarantee in writing for a full year. If the repair fails during that period, we return at no charge. The price on the invoice is the price you agreed to when you signed the work order. There is no fine print and no time limit beyond that first year.
If your AC or furnace is acting up in San Dimas, call (361) 306-9515 for a free estimate. We answer the phone with a person, write the price down before any work starts, and stand behind every job we do here.
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
"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.