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Heating System Repair in Walnut Creek

The short answer

We repair furnaces, heat pumps, ductless systems, wall heaters and many radiant setups in Walnut Creek. Each call includes safety checks, testing to find the failed component, and a clear explanation before repairs begin.

Ask ten Walnut Creek homeowners how their house is heated and you might get ten answers. Forced-air gas furnaces are common, but so are heat pumps, ductless mini-splits, wall furnaces in smaller older homes, and hydronic or radiant systems in some mid-century designs. When the heat goes out, that variety means the first job is figuring out what kind of system you have and how it is supposed to work. Our technicians drive the roughly ten miles northwest from Danville to repair heating equipment across 94595, 94596, 94597 and 94598, and we arrive ready for more than one type of system.

Systems We Work On

Each heating type has its own common failures. Here is what we usually find:

  • Gas furnaces: ignition faults, flame sensors, pressure switches, blower motors and control boards
  • Heat pumps: defrost problems, reversing valve failures, refrigerant leaks and backup heat issues
  • Ductless mini-splits: sensor errors, communication faults, fan motors and refrigerant leaks
  • Wall furnaces: pilot outages, thermocouples, gas valves and vent blockages
  • Hydronic and radiant systems: circulator pumps, zone valves, thermostats and the boiler or water heater that supplies heat
  • Controls: thermostats, zone boards and low-voltage wiring

Radiant and Hydronic Heat

Some mid-century Walnut Creek homes were built with radiant heat, using hot water tubing in the slab or ceiling. When these systems stop working, the problem is often a failed circulator pump, a stuck zone valve, a thermostat fault, or an issue with the boiler or water heater that supplies the heat.

Leaks in buried tubing are harder to diagnose and repair. We check the parts we can reach first, test pressures and flow, and give you an honest assessment. If radiant repair is not practical, ductless heat pumps can provide heat and cooling without tearing up floors.

Wall Heaters and Small Homes

Smaller and older houses, cottages and in-law units in Walnut Creek sometimes depend on a gas wall furnace. These are simple appliances, but their safety controls are basic, and the vent above them must be clear and sealed. We relight pilots, replace thermocouples and valves, and test for carbon monoxide.

If a wall heater is worn out, a ductless heat pump can be a good replacement. It also adds cooling, which many of these homes lack.

Heat Pump Winter Troubles

Heat pumps are increasingly common in Walnut Creek. In winter, symptoms like lukewarm air, ice that does not clear from the outdoor coil, or high electric bills from constant backup heat usually point to defrost controls, sensors, refrigerant charge or a failed outdoor fan. We test each to find the real cause.

We also check the thermostat setup. A thermostat configured for the wrong equipment type can call for backup heat too often or fail to manage defrost correctly.

Forced-Air Furnaces and Their Ducts

The most common heating setup in the city is still a gas furnace feeding ducts in the attic, crawlspace or slab. When a furnace like this fails to start, we watch its ignition sequence to see where it stops, then test the igniter, flame sensor, pressure switch, gas valve and blower with a meter. Most no-heat calls trace back to one of those parts.

Just as often, though, the furnace runs fine and the complaint is a cold back bedroom or a hallway that never warms up. Older duct systems in Walnut Creek houses can have joints that have pulled apart, flex runs crushed by storage or later remodeling, and slab ducts that have partially filled with debris. We measure airflow at the registers and inspect what we can reach, then tell you whether the fix is a simple reconnection or a larger duct repair.

Before we wrap up any furnace repair, we run full heating cycles, check the temperature rise and test for carbon monoxide near the appliance, so you know the system is both warm and safe.

Looking Ahead

If your heating system is near the end of its life, it helps to know the rules. The Bay Area Air District does not require replacing working equipment. Gas furnaces manufactured from 2029 must meet a zero-NOx standard under Rule 9-4, which points future replacements toward heat pumps. BayREN and local clean energy providers may offer incentives for heat pumps, and we confirm current amounts before quoting.

We also repair heating systems in Pleasant Hill, Lafayette, Concord, Moraga and Clayton.

More services in Walnut Creek

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What to expect

How a visit goes

  1. Clear findings

    We show you the failed part or the reading that points to it, and explain what it means for the rest of the system.

  2. Choices, not pressure

    Repair, replace or wait and watch: you get the trade-offs of each and make the call yourself.

  3. Care for your home

    Shoe covers, drop cloths and a clean work area when we leave, whether the job was in the attic, garage or hall closet.

FAQ

Common questions

Do you repair radiant floor heating?

We repair the accessible parts of many radiant systems, including circulator pumps, zone valves and thermostats. Buried tubing leaks are assessed case by case.

My wall heater pilot keeps going out. Why?

Common causes are a worn thermocouple, a dirty pilot assembly or drafts. We check each and repair the cause.

Why is my heat pump using so much backup heat?

It may be undersized, low on refrigerant, struggling with a defrost problem or set up incorrectly at the thermostat. A service visit can find the reason.

Can a ductless system replace my old heater?

Yes. Ductless heat pumps are a common replacement for wall heaters and failing radiant systems, and they add cooling.

Is it safe to use an old wall furnace?

It can be, if it is venting properly and the controls work. We test for carbon monoxide and check the controls.

How long does a heating repair take?

Many repairs are completed in one visit. If a part needs to be ordered, we make the system safe and schedule a return.

Tell us what your system is doing

Describe the noise, the smell or the temperature problem when you reach out, and we will schedule a technician with the right parts for your equipment.

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