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.
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AfterHVAC Company in San Lorenzo, CA
Dalton Heating & Air is the HVAC company San Lorenzo homeowners call when a system fails and they need a straight answer. San Lorenzo’s housing stock runs older, much of it built in the 1940s and 1950s, which means undersized ductwork, aging electrical panels, and furnaces that predate modern efficiency standards. Our crews work on all of it. From AC compressors that quit during August heat to gas furnaces that short-cycle in December, we show up with the parts on the truck, a written price in hand, and a one-year guarantee on every repair. Call (361) 306-9515 for a free estimate.
Why San Lorenzo Homes Are Different
San Lorenzo sits on flat, reclaimed bay plain between San Leandro and Hayward, and the soil and air tell you a lot about what breaks. Summer afternoons push temperatures into the high 80s and low 90s, but the bigger strain is the marine layer and bay humidity moving through crawlspaces and attics. We regularly find corroded evaporator coils and rusted condensate pans in homes along Hesperian Boulevard and Bockman Road, where moisture settles into equipment that runs hard from June through October.
The housing stock works against modern HVAC expectations. Many original San Lorenzo Village homes were built as part of the post-war planned community, with compact floor plans, limited closet space for furnaces, and no central air from the factory. Retrofitting those homes means working around tight mechanical closets and original duct runs. When homeowners replace a furnace or add AC, the job usually involves an electrical panel check, attic access work, and sometimes HOA paperwork for exterior condenser placement. It’s not the same as a new-build install in Dublin or Pleasanton. It takes a crew that has seen these houses before. Our technicians are background-checked and arrive in uniform, so you know exactly who is walking up your driveway.
Our Main San Lorenzo Services
Most calls in San Lorenzo come down to two urgent problems: a cooling system that won’t cool in summer, and a furnace that won’t light in winter. Below are the three services we handle most for San Lorenzo homes, each with its own dedicated page.
AC Repair in San Lorenzo
When the AC quits on a 92-degree day in San Lorenzo, the clock matters. Most air conditioning repairs in this area involve failed capacitors, leaking refrigerant, or clogged evaporator coils working against bay humidity. We carry replacement parts for Trane, Lennox, Goodman, and Rheem units on our trucks, so a capacitor swap is often done the same day. Every repair comes with a written price before we touch anything and a full-year written guarantee. AC Repair in San Lorenzo covers what we see most in this city and what it costs to fix.
Heat Pump Installation in San Lorenzo
Heat pumps make particular sense in San Lorenzo’s mild winters, where a well-sized unit handles both heating and cooling without a gas line. The catch is sizing: older San Lorenzo homes with original single-pane windows and minimal insulation lose heat faster than the square footage suggests. We run proper load calculations before quoting, never a rule-of-thumb guess. Installations on Goodman and Rheem equipment are our most common, and we explain the rebate paperwork clearly. Heat Pump Installation in San Lorenzo walks through sizing, cost, and what to expect.
Furnace Repair in San Lorenzo
San Lorenzo’s older gas furnaces fail in predictable ways: failed ignitors, dirty flame sensors, cracked heat exchangers on units past their service life. The fog and damp near the bay make rust on the heat exchanger a recurring issue we see often in the neighborhoods near Grant Avenue. If your furnace won’t ignite or is blowing cold air, we diagnose the exact part and show you the written price before any work starts. Furnace Repair in San Lorenzo details repair costs and when replacement makes more sense.
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 Lorenzo
Our technicians are factory-trained on the equipment most common in San Lorenzo homes. We service Trane, Lennox, Goodman, and Rheem systems, plus five other major residential brands. Our trucks carry common parts like capacitors, contactors, flame sensors, and ignitors, so a first-visit fix is realistic for many repairs. See our brands for the full list.
Pricing for HVAC Company in San Lorenzo, CA
| Service | Typical range in San Lorenzo |
|---|---|
| AC repair (common part failure) | $150 – $650 |
| Furnace repair (ignitor, sensor, valve) | $150 – $700 |
| AC installation (full system) | $3,500 – $7,500 |
| Seasonal tune-up | $80 – $200 |
What pushes a San Lorenzo repair toward the top of those ranges is access: crawlspace furnaces, attic evaporator units, and tight mechanical closets all add labor time. Parts availability matters less than you’d think, because our trucks are stocked for the brands above. Every quote is in writing before we begin, and the number we give you is the number you pay. No trip-charge surprises, no overtime add-ons.
Neighborhoods We Serve in San Lorenzo
Our crews cover all of San Lorenzo, from the older San Lorenzo Village homes near the center to the neighborhoods along Bockman Road, Grant Avenue, and Hesperian Boulevard. Response time for most calls is same-day when you call before early afternoon.
- San Lorenzo Village
- Bockman Road corridor
- Grant Avenue area
- Hesperian Boulevard corridor
- Via Arroyo
Service Area – Cities Near San Lorenzo
In addition to San Lorenzo, Dalton Heating & Air serves nearby communities across the East Bay and beyond. We handle heating and cooling calls in Castro Valley, CA, San Leandro, CA, Union City, GA, and Oakland, FL. Scheduling for all locations runs through our San Francisco Bay Area office, with crews dispatched locally. Call (361) 306-9515 to confirm availability in your city.
Serving San Lorenzo, CA - Our Local Coverage Area
We’re based in the San Lorenzo 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 Lorenzo
We answer calls around the clock with a live person, and most San Lorenzo repair calls are handled same-day when you call before early afternoon. Emergency cooling issues during a heat wave and furnace failures on cold nights get priority routing. Call (361) 306-9515 and we’ll give you an honest arrival window.
Alameda County requires permits for most furnace replacements, new AC installations, and heat pump installs. Repair work on existing equipment generally does not. We handle the permit application and inspection scheduling as part of the installation job, and we’ll tell you upfront if your specific fix needs any paperwork.
Every repair we perform comes with a written guarantee that covers the work for a full year. If a repair fails inside that year, we return at no charge and make the fix. That’s the Garrison Standard, and it’s not an upgrade, a warranty add-on, or a promo. It’s included on every service call.
Need an HVAC crew that gives you the price in writing and stands behind the work for a year? Call Dalton Heating & Air at (361) 306-9515 for a free estimate. Marco Benitez and the team serve San Lorenzo seven days a week.
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 Lorenzo Customers Say
"Installed a heat pump to replace an old oil furnace. Three clear quotes and the install crew was tidy."
- Cheryl B."Tech arrived in uniform right on time. AC wasn't cooling, found a failed capacitor, and replaced it in twenty minutes. The owner is a veteran and the company runs like it."
- Frank O."Blower motor died on the coldest night. They had the part on the truck and had us warm again the same day."
- Sandy G.