When Your Empire Comfort Systems Heater Refuses to Light (And You're Staring at a $300 Service Call)
So your Empire Comfort Systems gas heater won't turn on. Maybe it's a cold morning, maybe you've got a building full of tenants who are not patient. Before you call the HVAC tech and drop $150 just for them to walk through the door, there's a checklist I've refined over 6 years of managing facility maintenance. It's caught about 60% of our 'emergency' calls before they became emergencies. Here are the 5 things to check, in order.
Step 1: Confirm the Gas Supply (Sounds Obvious, But You'd Be Surprised)
First thing: is gas actually getting to the unit? I've shown up to a 'broken heater' twice now only to find the gas valve was shut off during some other work and nobody turned it back on. Check the shut-off valve near the unit—it should be parallel to the pipe, not perpendicular. (Should mention: sometimes valves get bumped by cleaning crews or maintenance carts.)
If you've got multiple units, check if other gas appliances are working. If the stove or water heater is out too, you've got a supply problem, not a heater problem. That's a call to your gas utility, not an HVAC tech.
Step 2: Check the Thermostat Settings
This is one of those "people assume" things. From the outside, it looks like the thermostat is just a temperature setting. The reality is there are several failure points here. Is it set to 'Heat'? Is the fan set to 'Auto'? Is the temperature set high enough to actually call for heat?
Never expected the thermostat batteries to be the culprit as often as they are. Turns out, low batteries can cause the thermostat to lose connection with the heater. I keep a pack of AA batteries in my tool bag now. (Oh, and if you've got a programmable thermostat, check if the schedule is overriding your manual settings. That one got me twice.)
Step 3: Inspect the Pilot Light (or Ignition System)
If gas is flowing and the thermostat is calling for heat, the next stop is the pilot light or electronic ignition. For older Empire Comfort Systems models with a standing pilot, you might see a small flame that's supposed to be burning constantly. If it's out, you'll need to relight it.
Here's the step I always see skipped: follow the manufacturer's relighting instructions on the unit's label. Not YouTube. Not what 'the last guy' did. The label. It usually involves turning the gas control knob to 'Pilot,' holding it down, and pressing the igniter button. Seriously, read the label—some models have a specific sequence you need to follow or the safety valve won't open.
For newer models with electronic ignition (spark or hot surface), you might hear a clicking sound or see a glow. If you don't, the ignition module might be the problem. But before you go there, check if the power is on at the unit. (Should mention: some units have a wall switch or a disconnect near the heater that looks exactly like a light switch. Flip it off and on.)
Step 4: The Real Culprit—The Thermocouple (Or Flame Sensor)
This is the part most people miss. The thermocouple (on older pilots) or flame sensor (on electronic ignition) is a safety device. It detects if there's a flame and tells the gas valve to stay open. If it's dirty or failing, it 'thinks' there's no flame, so it shuts the gas off—even if the pilot is lit.
I have mixed feelings about DIY repairs, but cleaning a thermocouple is actually something a facility manager can do without a license. Take it out, gently clean the tip with fine sandpaper or steel wool, and reinstall. It costs nothing and works about 40% of the time.
The surprise wasn't the cost of replacement (about $15-25 for the part). It was how much downtime a bad thermocouple causes. You relight the pilot, it stays on for 10 minutes, then goes out. Again and again. If that's your pattern, it's almost certainly the thermocouple or flame sensor.
Step 5: Look for Blocked Vents or Airflow Issues
When an Empire Comfort Systems heater won't turn on, it's usually because a safety switch has tripped. One common trigger is a blocked intake or exhaust vent. If the unit can't breathe, it won't fire. Check for lint, dust, or even a plastic bag stuck over the vent opening. In commercial settings, I've seen storage boxes stacked against the heater panel. Move them. Clear the space.
If your heater has a filter (some do), check if it's clogged. A dirty filter can cause overheating and trigger a safety limit switch. I once spent an hour troubleshooting a unit that just needed a $8 filter change. (I should add that this is worth doing as a preventive step—you won't believe how many 'failed' units just needed clean filters.)
When None of This Works: Know Your Limits
I recommend this checklist for most basic troubleshooting, but if you've gone through all 5 steps and the unit still won't fire, you're likely dealing with a more complex issue: a faulty gas valve, a bad control board, or a pressure switch problem. At that point, you need a licensed HVAC tech. I'd rather spend $150 on a diagnostic fee than risk a gas leak or carbon monoxide issue.
One more thing: if you're considering a replacement, get quotes from at least three vendors. In Q2 2024, when I compared quotes for a similar-capacity unit, the price difference between the lowest and highest was over 30%. Some of that is brand markup; some is service quality. Empire Comfort Systems units are solid—we've had good experience with their reliability. But don't overpay for installation.
Quick Summary Checklist
- Gas valve open? (Parallel to pipe = on)
- Thermostat calling for heat? (Batteries good? Schedule correct?)
- Pilot light lit? / Ignition sparking?
- Thermocouple or flame sensor clean?
- Vents clear? Filter clean?
If you get through that list and still have no heat—call a pro. And maybe a parts vendor, because you'll probably need a solenoid valve or a thermocouple. Keep a sprayway glass cleaner on hand for cleaning the unit's exterior while you're at it—it's not critical, but a clean unit is easier to inspect. (And if you need to document the issue for your maintenance log, you should know how to take a screenshot on windows. Just hit Windows + Shift + S.)
