The short answer
ArcticPoint HVAC Repair fixes gas furnaces and heat pumps in Sunnyvale homes, from ignition failures and short cycling to weak airflow and thermostat faults. We offer 24/7 emergency service, and you don't have to replace a working furnace because of the new Bay Area air rules.
Sunnyvale winters are mild, but the cold, damp nights between November and March are when a furnace or heat pump that has sat unused all summer tends to quit. ArcticPoint HVAC Repair sends technicians from our San Jose base to homes across Sunnyvale, including ZIP codes 94085, 94086, 94087 and 94089. We diagnose and repair gas furnaces, heat pumps and the thermostats and ductwork that connect them. Our goal is to find the actual cause of the problem, explain it in plain terms, and get your house warm again.
Why Sunnyvale Heating Systems Act Up
The Santa Clara Valley has dry summers and mild, damp winters. Areas near the Bay, including much of Sunnyvale, see fewer extreme temperatures than inland parts of the valley. That means many heating systems run only a few months a year. Long idle stretches let dust settle on burners and flame sensors, let thermostat batteries die, and hide small problems until the first cold night.
When you call us, it helps to tell us what you're noticing. These are the symptoms we hear about most:
- Furnace blower runs but the air from the vents is cold
- Burners light, then shut off after a few seconds
- A burning-dust smell the first time the heat comes on (often normal briefly, but not if it lingers)
- Banging, squealing or rattling from the furnace or air handler
- Some rooms warm while others stay cold
- Heat pump blowing lukewarm air or running constantly in heating mode
- Thermostat blank, unresponsive or not calling for heat
What Happens During a Repair Visit
Our technician starts by confirming the basics: thermostat settings and power, the condition of the air filter, and the breaker and furnace switch. Many no-heat calls end here, and we'll tell you if that's the case.
From there we work through the system. On a gas furnace, that means checking the igniter, flame sensor, gas valve, pressure switch, inducer motor, limit switches and control board, and inspecting the burners and venting. On a heat pump, we check refrigerant pressures, the reversing valve, the defrost controls, the outdoor fan and the backup heat strips. We explain what failed and why, and we discuss repair options with you before doing the work.
Repair or Replace? What Bay Area Air Rules Mean for You
Many Sunnyvale homeowners have heard about the Bay Area Air District's appliance rules and worry they'll be forced to remove their furnace. They won't. The rules don't require replacing working equipment. They apply only when an existing furnace fails or is replaced.
Under Rule 9-4, gas furnaces manufactured starting in 2029 must meet a zero-NOx emission standard. In practice, that points homeowners toward heat pumps when they replace a furnace after that date. For now, a sound furnace with a repairable problem is usually worth fixing. If yours is older, needs repairs often, or has a cracked heat exchanger or another serious safety issue, we'll give you an honest comparison of repairing versus replacing.
If you're considering a heat pump, check BayREN and your local clean energy provider for current electrification incentives. Amounts and availability change by funding cycle, so we confirm the current offer before we mention it. Note that the federal 25C tax credit covered heat pumps placed in service before December 31, 2025. It isn't available for new installations after that date.
When to Call for Emergency Heating Service
Some heating problems shouldn't wait until morning. ArcticPoint offers 24/7 emergency service for situations like these:
- You smell gas near the furnace or water heater. Leave the house first and contact your gas utility, then call us.
- A carbon monoxide alarm is going off
- The furnace is making loud bangs on ignition or you see scorch marks
- There's no heat and someone in the home is elderly, very young or medically vulnerable
Serving Sunnyvale and Nearby Communities
Sunnyvale is northwest of our San Jose base, so it's a regular part of our service area. We also handle heating repair in nearby Santa Clara, Los Altos, Cupertino, Saratoga and Milpitas, all in Santa Clara County.
More services in Sunnyvale
- AC Repair in Sunnyvale
- Heat Pump Installation in Sunnyvale
- AC Installation in Sunnyvale
- Furnace Repair in Sunnyvale
