Coldharbour Heating & Air hvac team

HVAC Company in Hillsborough - Fast Local Response, Upfront Pricing

Same-day heating and cooling service with the price agreed before we start, and no overtime surcharge for evenings or weekends. Licensed, insured, EPA-certified technicians.

✓ Licensed & Insured ✓ Written quotes ✓ Permits handled
Call Now - 24/7 Dispatch

We answer around the clock

🛡 Licensed & Insured 📝 Written Fixed-Price Quotes 💲 No Change Orders · Free Estimates
Every visit starts with

Seasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed

Your new heating and cooling system for as low as $119/month*on approved credit; ask for current terms

Diagnosis first, numbers second - you approve the repair price before a single part goes in.

Styles & brands we work with

AC repair
AC repair
Furnace & heating
Furnace & heating
Heat pumps
Heat pumps
Ductless mini splits
Ductless mini splits
Carrier
Carrier
Trane
Trane
Goodman
Goodman

Before & after – our own jobs

Before - Recent ProjectBeforeAfter - Recent ProjectAfter
Recent Project
Before - Full RestorationBeforeAfter - Full RestorationAfter
Full Restoration
Before - Complete UpgradeBeforeAfter - Complete UpgradeAfter
Complete Upgrade

HVAC Company in Hillsborough, CA

Hillsborough’s exclusively single-family estate homes, many built between the 1920s and 1950s with radiant heating and no original cooling, create HVAC challenges that differ sharply from standard suburban jobs. We handle everything from steam boiler repairs in Tudor Revival homes to multi-zone AC installations in newer custom builds, with pricing that starts with a written estimate before any work begins. Most repair calls in Hillsborough are answered by a live person and scheduled with a firm arrival window. Call (817) 402-2972 to speak with our dispatch team.

Call (817) 402-2972

Why Hillsborough Homes Are Different

Hillsborough’s municipal code bans apartments and commercial buildings entirely, so every HVAC job we take here involves a large custom estate, not a tract home or condo. Many of these houses were built in the 1920s through 1950s in Mediterranean Revival, Tudor, and Colonial Revival styles with plaster-over-lath walls, high ceilings, and original steam or hot-water radiant heating systems. That construction makes traditional ductwork retrofits invasive and costly, which is why we often recommend ductless mini-splits or hydronic cooling solutions instead.

The city’s architectural review process adds another layer. All mechanical equipment, condensers, air handlers, and exhaust vents must be screened from street and neighbor view before permits issue. We’ve seen condenser replacements that should take a day stretch to three weeks because an out-of-area contractor didn’t submit equipment-screening plans upfront. Hillsborough also sits on the mid-peninsula hillside, giving it a microclimate warmer and less fog-bound than coastal San Mateo County, yet mild enough that central air was rarely installed until recent Diablo-wind heat events pushed temperatures into the low-to-mid 90s and exposed how poorly thick plaster walls and single-pane steel casement windows retain comfort.

Our Main Hillsborough Services

Most calls we get from Hillsborough fall into three categories: cooling repairs during heat events, heating repairs when radiant systems fail, and new AC installations for homes that never had central air. Each has its own page with Hillsborough-specific details.

AC Repair in Hillsborough

When Diablo winds push Peninsula temperatures into the 90s, Hillsborough homes with thick plaster walls and steel casement windows heat up fast and cool down slowly. We repair all major brands, including Rheem and York systems, and carry common capacitors, contactors, and refrigerant on our trucks to avoid delays. Because many Hillsborough AC systems were retrofitted into homes without original ductwork, we often find issues at the indoor coil or refrigerant lines rather than the outdoor condenser alone. AC Repair in Hillsborough

AC Repair in Hillsborough

Furnace Repair in Hillsborough

A large share of Hillsborough heating is still steam or hot-water radiant, not forced air, so “furnace repair” here often means boiler work, circulator pumps, or zone valve replacement. We also service conventional gas furnaces in newer custom builds from the 1980s onward. Our technicians are trained on both hydronic and forced-air systems, and we stock common boiler parts because a failed circulator on a January night in Hillsborough is not a next-week problem. Furnace Repair in Hillsborough

Furnace Repair in Hillsborough

AC Installation in Hillsborough

New cooling systems in Hillsborough must clear architectural review before permits are issued, which means equipment-screening plans showing hidden condensers behind custom enclosures or dense landscaping. We coordinate this step from the start so it doesn’t surprise the timeline or budget. For older estates without ductwork, we often design ductless mini-split or hydronic cooling systems that avoid tearing open plaster walls. Every installation gets a written fixed price and a scheduled start date. AC Installation in Hillsborough

AC Installation in Hillsborough
Need help today?Fast, friendly service and a no-obligation free estimate.

Call (817) 402-2972

What happens when you call

  1. 1
    A real person answersNo phone trees - you reach a local pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched.
  3. 3
    A background-checked tech heads outLicensed & insured, dispatched right away.
  4. 4
    You approve before work beginsNothing starts until you say go.

Brands We Service in Hillsborough

Our technicians train on nine major residential HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. We stock common Rheem and York parts locally, and our San Francisco Bay Area office coordinates same-day or next-day parts runs for anything we don’t carry. That keeps most Hillsborough repair calls to a single visit. our brands

Pricing for HVAC Company in Hillsborough, CA

Service Typical range in Hillsborough
AC Repair $150-$650
Furnace Repair $150-$700
AC Installation $3,500-$7,500
Tune-Up $80-$200

Prices in Hillsborough run toward the higher end of these ranges when jobs require architectural review coordination, custom equipment screening, or plaster-wall access for routing lines. The written price we hand you before any work begins is the price you pay, period. No change at the door, no surprise add-ons after the tools come out.

Neighborhoods We Serve in Hillsborough

We dispatch crews throughout Hillsborough’s estate neighborhoods, from the older hillside properties near Skyline Boulevard to the flatter, newer custom builds closer to El Camino Real. Most calls reach a technician within the same day or next day depending on scheduling load.

  • Upper Hillsborough / Skyline area
  • Carolands / South Hillsborough
  • Trousdale Drive vicinity
  • Lakeview / Lower Hillsborough
  • El Cerrito / East Hillsborough

Service Area – Cities Near Hillsborough

Our San Francisco Bay Area office dispatches crews throughout the Peninsula and beyond. We regularly take calls from San Francisco, CA, San Jose, CA, and Los Angeles, CA for larger projects, with standard service coverage extending to San Diego, CA for select installations. Most Hillsborough jobs are handled by Peninsula-based technicians who know the local permit and review processes firsthand.

Serving Hillsborough, CA - Our Local Coverage Area

We’re based in the Hillsborough 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 Hillsborough, CA

Ready to get started? Free estimates · 60-minute response in Hillsborough
Call (817) 402-2972

What happens when you call

  1. 1
    A real person answersNo phone trees - talk to a local hvac pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
  3. 3
    We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
  4. 4
    You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.

What Hillsborough Customers Say

★★★★★ 4.8 from 6+ reviews

"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

How It Works in Hillsborough

Getting your hvac handled is simple and fast.

1

Call or Request a Free Estimate

Tell us about your hvac needs and we provide an upfront, transparent quote - no obligation, no hidden fees.

2

Licensed Technician Dispatched

A background-checked, certified technician arrives in Hillsborough - typically within 30-60 minutes, with parts stocked on the truck.

3

Problem Solved, Guaranteed

We complete the job to your full satisfaction, backed by our warranty and 100% satisfaction guarantee.

Current Offers

Bring these savings to your next appointment.

10%

10% Off Your First Service Visit

Valid on your first completed service visit with us.

Expires Mar 31, 2027
Always

Written Price Before Any Work Starts

Expires Mar 31, 2027
Included

Written Guarantee on Every Repair

Expires Mar 31, 2027
Free

Free Second Visit if the Repair Fails

Expires Mar 31, 2027

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Areas We Serve
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