Do you handle both residential and commercial HVAC in San Mateo?

Yes. Residential systems (central AC, furnaces, heat pumps, mini-splits) and light commercial systems (rooftop units, VRF, split systems) up to about 25 tons. We carry both C-20 HVAC and C-38 Refrigeration licenses.

How quickly can you respond to an HVAC emergency in San Mateo?

Same-day for most emergencies. We're based in Los Gatos and typically reach San Mateo within 15–30 minutes. During peak summer and winter months, we schedule emergency calls within 2–4 hours.

Do you offer HVAC maintenance plans for San Mateo homeowners?

Yes. Annual and semi-annual plans including pre-season inspection, filter replacement, coil cleaning, electrical testing, refrigerant check, and combustion safety analysis. Maintenance customers get priority scheduling and discounted diagnostics.

25–40 min from Los Gatos HQ

HVAC Repair
San Mateo, CA

San Mateo’s Peninsula climate means you need heating nine months of the year and cooling during the warm spells that arrive without much warning. A single HVAC contractor who understands both systems — and how they share ductwork, thermostats, and electrical — saves time, money, and diagnostic accuracy. That’s what we deliver across San Mateo.

(408) 581-2241

25–40 minFrom Los Gatos HQ

5.0 ★Google Rating

Same DayEmergency Service

C-20 & C-38Dual Licensed

C-20 HVAC License EPA 608 Certified NATE Certified

HVAC Repair in San Mateo: Complete Climate Control

San Mateo’s transitional climate catches HVAC systems at their most vulnerable. The same week in October might need AC in the afternoon and heat by dawn. Systems cycle between heating and cooling modes, and any weakness — a marginal thermostat, a duct connection that loosened over the summer, a refrigerant charge that’s slightly low — becomes apparent during these transitions.

The Hillsdale and Baywood areas have homes where the furnace and AC were installed by different contractors, sometimes decades apart, with varying levels of system integration. We see mismatched equipment, incompatible thermostat wiring, and ductwork that was never reconfigured when the AC was added. Troubleshooting these hybrid systems requires understanding the full picture.

Downtown San Mateo commercial properties — B Street restaurants, El Camino Real retail, the 101 corridor offices — run commercial HVAC that handles both heating and cooling with packaged equipment. When one function fails, we diagnose and repair without requiring separate heating and cooling contractors.

Common HVAC Issues in San Mateo

Mismatched systems: Furnace from one era, AC from another. Different control protocols causing communication errors.

Damp-climate issues: Corrosion on electrical connections, mold in ductwork, condensate problems exacerbated by high humidity.

Commercial dual-function: RTU heating and cooling in one package. We service both sides simultaneously.

HVAC Repair Costs in San Mateo

Diagnostic / Service Call $89–$150

Thermostat Repair/Replace $100–$350

Capacitor, Contactor $150–$400

Fan or Blower Motor $400–$900

Compressor $1,500–$3,000

Residential HVAC in San Mateo. Diagnostic applied toward repair. 25–40 min from Los Gatos.

Why Us

Why San Mateo Chooses North Breeze for HVAC

Both Sides of the System

Heating and cooling under one contractor. No finger-pointing between separate companies.

Peninsula Climate Knowledge

San Mateo’s damp air, fog, and seasonal swings create HVAC challenges we understand from years of Peninsula service.

Commercial + Residential

Downtown restaurants and Hillsdale homes. C-20 and C-38 dual-licensed.

Same-Day Emergency

25–40 min from Los Gatos via 280. Emergency heating and cooling repair available same day.

FAQ

HVAC Repair San Mateo — Common Questions

Is it normal for my San Mateo HVAC to switch between heating and cooling in the same day?

During spring and fall transitions, absolutely. San Mateo can swing 30°F between morning low and afternoon high. A properly configured thermostat handles this automatically with a deadband (gap) between heat and cool setpoints. If your system seems to be fighting itself, the thermostat deadband may need adjustment.

My San Mateo home has a different furnace brand and AC brand — is that a problem?

It can be. Mismatched systems sometimes have communication issues, efficiency losses, or airflow imbalances. If they were installed at different times by different contractors, the integration may not be optimal. We evaluate the complete system and can make adjustments to improve how they work together.

Do you offer maintenance plans for San Mateo homes?

Yes. Annual or semi-annual tune-ups cover both heating and cooling. Given San Mateo’s year-round HVAC usage, preventive maintenance is especially valuable here — it catches problems before they become emergency repairs during the busiest seasons. Tune-up details.