Can a Williams wall furnace heat our backyard ADU in Benicia?

Yes. For a single room or a small unit without ducts it is a simple, dependable choice. A direct-vent model needs an exterior wall for its vent cap and a gas line to that wall. We look at the space and give you a written quote for the install.

The thermostat for our studio heater seems dead. What is wrong?

On a millivolt Williams the wall thermostat has no batteries or house power. It switches the small voltage the thermopile makes. Dirty contacts, a broken wire in the wall or a tired thermopile all look like a dead thermostat, so we test each one before replacing anything.

Our house near First Street is old. Does that change anything for the furnace?

It can. An older house may still have a gravity wall or floor furnace venting through the roof, and the vent matters as much as the burner. We check the draft, the heat exchanger and the gas connection along with the part that failed.

WILLIAMS · BENICIA

Service · All Williams Models

Williams Wall Furnace & Heating Repair · Benicia, CA

Williams wall furnace repair in Benicia, from older homes near First Street to garage conversions and backyard ADUs.

$99 diagnostic (credited toward the repair)
Same or next-day best effort
CSLB #1136642

Call (925) 999-4095

Williams in Benicia

Williams heating and cooling in Benicia.

A large share of Benicia's homes date from the 1970s to the 1990s and were built with central heat, so a Williams furnace here usually serves something smaller: an older house near First Street, a converted garage, a backyard ADU or a studio. In spaces like those a direct-vent wall furnace or a console heater is often the only heat, and when it quits the room goes cold.

Our technician is based right here in Benicia. Winters are moderate, so these heaters cycle on and off more than they run flat out, and the wear lands on the ignition side: thermocouples, thermopiles, pilot assemblies and the gas valve. The $99 diagnostic is credited toward the repair, and you get a written quote before work begins.

Common repairs we handle.

Direct-vent wall furnace in an ADU not lighting. A direct-vent Williams pulls combustion air through a cap on the outside wall and exhausts through the same cap. When a nest, leaves or a crushed cap blocks it, the unit burns poorly or goes out. We check the cap and pipe first, then test the pilot, thermocouple and gas valve in order.
Gas valve sticking after years of cycling. A Williams gas valve that has opened and closed for decades can stick shut, or click without passing gas. We confirm the thermostat and limit circuit are good, test the valve, and replace it with the correct Williams valve so the gas pressure stays where the burner needs it.
Console heater burning with a lazy yellow flame. A yellow, wavering flame on a console heater means the burner is short of air or the orifice is dirty, and it leaves soot on the heat exchanger. We clean the burner and orifice, set the air shutter, check the vent, and confirm a clean blue flame before we leave.

Models we service

Williams product lines.

Wall furnaces (gravity and Direct-Vent)
Gravity and forced-air floor furnaces
Pilot and electronic ignition systems
Thermocouples, thermopiles, and gas valves
Console and high-efficiency direct-vent heaters

Pricing and warranty

What it costs. What we stand behind.

$99

Diagnostic visit. Credited toward the repair.
Written

1-year warranty on repairs. Quoted in writing before work starts.
CSLB

#1136642. Bonded and insured. We file warranty paperwork when applicable.

Nearby cities

Williams service in neighboring cities.

More cities

Williams across our service area.

FAQ

Williams in Benicia questions, answered.

Can a Williams wall furnace heat our backyard ADU in Benicia?

Yes. For a single room or a small unit without ducts it is a simple, dependable choice. A direct-vent model needs an exterior wall for its vent cap and a gas line to that wall. We look at the space and give you a written quote for the install.
The thermostat for our studio heater seems dead. What is wrong?

On a millivolt Williams the wall thermostat has no batteries or house power. It switches the small voltage the thermopile makes. Dirty contacts, a broken wire in the wall or a tired thermopile all look like a dead thermostat, so we test each one before replacing anything.
Our house near First Street is old. Does that change anything for the furnace?

It can. An older house may still have a gravity wall or floor furnace venting through the roof, and the vent matters as much as the burner. We check the draft, the heat exchanger and the gas connection along with the part that failed.

Need Williams service in Benicia?

Tell us what is broken. We will quote it.