Empire Comfort Systems Gas Heater: How to Turn It On (7-Step Checklist)

I'm the office administrator for a 140-person company, which in practice means I own facilities ordering — roughly $85,000 a year across eight vendors, from the HVAC service contract down to the toner. My master spreadsheet has a tab for the building (heater model numbers, thermostat locations, the Schluter trim profile from last year's restroom remodel) and a tab for the shop floor (fasteners, safety glasses, the forged carbon fiber sample panels our engineering lead asked me to source). Different categories, same recurring problem: nobody writes anything down until something stops working.

The Empire Comfort Systems wall heater in our back suite is the clearest example I've got. Back in October, I knew I should have had maintenance walk the unit before the first cold snap. I thought, what are the odds the cold comes early this year? Pretty good, apparently. The heater never lit, we ran two space heaters in a room with twenty desks for three days, and the invoice read: "gas cock at unit found closed." $145 to turn a lever a quarter turn.

So here's the sequence I wrote on an index card and taped inside the louver panel. Seven steps, about ten minutes, no tools beyond a flathead and a flashlight. It's for anyone who manages a building with an Empire wall heater and gets asked "how do we turn the heat on?" at 7:40 in the morning.

Before you start: which heater do you actually have?

Empire Comfort Systems makes gravity-vented wall furnaces, vent-free (unvented) heaters, and direct-vent models, and the ignition systems differ across them. A standing-pilot unit has a pilot flame burning year-round. An intermittent pilot or hot-surface ignition unit lights itself on a call for heat and has no pilot to light at all. If you follow standing-pilot instructions on an electronic-ignition unit, you'll spend twenty minutes pushing a button that does nothing useful.

The model number is on the rating plate, usually behind the front louver panel or on the side of the casing. The lighting sequence is on a label stuck to the back of the access panel or inside the burner compartment. Scan the QR code on the plate if there is one — it usually resolves to a short, memorable link (a vanity URL) that redirects to the current literature for that exact model, which beats digging through a dealer portal.

The 7-step sequence

Step 1: Read the label on the unit, not the internet

This is the step everyone skips, including me, and it's the one that prevents the other six from being wasted effort. The label on your specific unit is the authoritative procedure — it was written for that gas valve, that ignition system, and that venting configuration. Fifteen seconds of reading beats guessing at which knob does what.

Step 2: Confirm gas is actually reaching the unit

There's a manual shutoff valve on the gas line near the heater, usually a lever-style valve. Lever parallel to the pipe means open. Lever perpendicular means closed. Building maintenance often closes these in spring for leak isolation or servicing, and then nobody reopens them in fall. This is, verbatim, what cost us the $145.

Two related checks: if the heater runs on propane, look at the tank level — a partly empty cylinder on a 20°F morning can lose enough pressure that the unit won't light even though there's fuel in it. And if the other gas appliances in your suite are working fine, you can rule out the meter and the utility.

Step 3: Check the power source — including the one that isn't there

Look for a service switch or a wall switch near the unit, and check the breaker. If the thermostat screen is blank, that's usually batteries, not a dead heater.

Here's the part that trips people up: millivolt standing-pilot systems (common on older wall furnaces) have no line voltage at all. The thermostat runs off a thermopile heated by the pilot flame. If the pilot is out, there is no power anywhere in that circuit, so stop hunting for a tripped breaker — you're looking for the wrong problem. If your suite has a programmable thermostat or a building automation schedule, check the override before you take anything apart.

Step 4: Set the thermostat correctly

Mode to HEAT, fan to AUTO, and raise the setpoint three to five degrees above room temperature. Setting it to 90 doesn't make the room heat faster — it just makes the unit run longer and, on units with a high-limit switch, can push it into short cycling. A heat-only wall furnace typically uses a simple two-wire thermostat, so there's nothing exotic to configure.

Step 5: Light the pilot (standing-pilot models only)

Turn the gas control knob to PILOT, push and hold it down, and press the red igniter button until the pilot catches. Then keep holding the knob for 30 to 60 seconds after the flame is established before releasing it and turning the knob to ON.

The single most common failure here is holding the knob for ten seconds. The thermocouple needs time to heat up before it will hold the gas valve open — release too early and the pilot dies, which makes people conclude the thermocouple is broken when it isn't. If the pilot lights but goes out the moment you let go, check whether the flame is actually enveloping the top of the thermocouple. If it's a small, lazy flame that barely touches it, the pilot orifice may need cleaning — that's a service call, not a screwdriver job.

If the line was recently serviced or reconnected, air in the pipe is a real possibility, but don't sit there clicking for ten minutes. Purging a gas line is a technician's job. Two or three honest attempts, then stop.

On intermittent-ignition models there's no pilot to light. You make the call for heat at the thermostat and the module handles the rest. Many of those modules lock out after a few failed attempts; cycling power at the service switch clears it once. If it locks out again, you have an actual fault.

Step 6: Watch the flame, then feel the air

You should hear the burners within 30 to 60 seconds of the call for heat, and feel warm air at the discharge grille within two to five minutes. Look at the flame through the sight glass or the louver: steady blue with slightly yellow tips is normal. Rolling yellow, orange, floating, or lifting off the burner is not — shut it down at the thermostat, then at the gas valve, and call service.

One thing that alarms people unnecessarily: the first start of the season often smells like dust burning off the heat exchanger. That's normal for 15 or 20 minutes. The smell of gas — the rotten-egg mercaptan odor — is not normal and means you evacuate and call from outside.

Step 7: Clear the intake, the outlet, and go look at the outside vent

This is the most commonly skipped step and the one with the worst downside. Nothing should be within about a foot of the grille or the return — no storage bins, no coat racks, no filing cabinets pushed against it during a reorg. Then walk outside and look at the vent cap on the exterior wall. Snow, bird nests, wasp nests, plastic bags, and dryer lint from a nearby exhaust all block vented flues, and a blocked flue is a carbon monoxide event, not an inconvenience.

Vent-free units have their own rules — they're certified to ANSI Z21.11.2 and rely on an oxygen depletion sensor in the pilot assembly, and they need combustion air. If someone has sealed one into a small closet or added weatherstripping to a room, that's a conversation to have before winter, not after.

CPSC guidance on carbon monoxide alarms is written for homes — an alarm on each level and outside sleeping areas — but the logic holds in any commercial suite with a gas-fired appliance. If your heater is in a room people work in, that room should have one, and it should be tested when you test the smoke detectors.

Five things that trip people up

• The ten-second pilot hold. Hold it a full minute. This alone accounts for most "the thermocouple is bad" diagnoses.
• The spring-closed gas valve. Nobody remembers closing it in April. Check it first, every October.
• Setting the thermostat to 90. It doesn't heat faster and it stresses the high-limit switch.
• Blocking the grille with furniture. Usually done during an office reshuffle, always forgotten.
• Calling a tech before checking the model plate. You'll pay a diagnostic fee for a procedure that was printed on a label inside the unit the whole time.

When to stop and call someone

Any gas odor. Any yellow or rolling flame, soot, or scorching smell. A pilot that won't stay lit after two genuine attempts. An igniter that clicks with no pilot and no burner response on an electronic-ignition model. A CO alarm going off. And any unit where the vent cap is damaged or the flue is blocked — that's not a maintenance ticket, that's a same-day call.

I keep two things taped inside our louver panel now: the index card with these seven steps, and a sticker with the model number, the install date, and the vendor's phone number. When the pilot went out in January, the person who found it had the heater running in four minutes and didn't call me at all.

Five minutes of verification beats five days of correction. I've got the invoice to prove it.