A Practical Checklist to Install Your Empire Comfort Systems Gas Heater Before Winter Hits

Who This Checklist Is For

If you're a contractor, property manager, or HVAC technician who needs to install an Empire Comfort Systems gas heater (or replace an existing one) before the first freeze, this one's for you. I've been in the emergency HVAC business for 8 years, and I've seen more rushed installations go sideways than I care to count. This checklist lays out the exact steps my team follows—in order—so you don't end up paying for rework or missing your deadline.

Step 1: Confirm Model & Compatibility (Don’t Assume)

What to do: Pull up the exact Empire Comfort Systems model (e.g., Empire DV‑210 or DV‑350) and cross‑check against your building’s gas line pressure, venting requirements, and available clearances. Don't just go by the old unit's label—I've seen a site where the existing heater was a 20-year-old model with different manifold pressure, and the crew tried to bolt a new one in without adjusting. That cost them 3 days and a $1,200 call‑back.

Checklist:

• Verify gas type: natural gas (NG) or propane (LP)?
• Minimum clearances per Empire's spec sheet (usually 6" from sides, 36" from front).
• Vent system: is it B‑vent, direct vent, or power vent? Empire units often ship with a specific vent kit—make sure you have it in hand.
• Electrical: does the heater require a dedicated 120V outlet? Most thermostats from Empire are battery‑powered, but some electronic models need a low‑voltage connection.

Step 2: Secure the Gas Supply Line (Size Matters)

What to do: Measure the existing gas pipe from the meter to the heater location. A common mistake is assuming the old ½" line is enough. Empire's larger heaters (e.g., the DV‑350) can pull up to 50,000 BTU/hr, which may require a ¾" line if the run is longer than 50 feet. In November 2024, I had a job where the subcontractor used ½" pipe for a 60‑foot run—the heater wouldn't maintain flame. We had to repipe at $25/ft, plus drywall repair.

Pro tip: Before you cut anything, call your gas supplier or use a sizing chart (ICC Building Code Table 1210.1). If you're unsure, oversize one step—the extra $50 in pipe is nothing compared to a delay.

Step 3: Venting – The #1 Source of Rework

Here's the thing: Empire direct‑vent heaters need a coaxial vent (inner pipe for exhaust, outer pipe for combustion air). If you're replacing an old B‑vent unit, you can't just reuse the old chimney—the new unit needs a fully sealed, dedicated vent. I've seen teams try to adapt a single‑wall pipe and end up with flue gas spillage.

Action: Lay out the vent kit from the box before starting the install. Check the termination cap clearance from windows, doors, and soffits (Empire’s manual says 4 feet minimum from a mechanical air intake). Mark the wall penetration location, drill a 6½" hole for the thimble, and install the wall plate. This step alone can take 2–3 hours if you're careful. Don't rush it—a leaky vent can cause carbon monoxide issues.

Step 4: Thermostat & Wiring (Pre‑wire While the Wall Is Open)

What to do: Run the thermostat cable (typically 18‑2 or 18‑3) from the heater location to the thermostat. Empire’s gas valves often have a simple two‑wire connection. But if you're installing a smart thermostat (like a Honeywell or Nest), you'll need a common wire. Pre‑wire now, even if you're using a battery thermostat—it saves a trip later.

Checklist:

• Use solid‑core thermostat wire (18 AWG min).
• Leave 6" of slack at both ends.
• Label the wires: typically red (24V hot) and white (call for heat).

Step 5: Pressure Test & Leak Check (Do This BEFORE Lighting)

I have mixed feelings about skipping this step. On one hand, it adds 20 minutes. On the other, I've seen a gas leak in a crawlspace that cost $2,500 in remediation. Per NFPA 54 (National Fuel Gas Code), you must pressure‑test the gas line with at least 10 psi for 5 minutes. Empire's heater also has a built‑in gas valve, so after you connect the flex line, use a manometer to verify manifold pressure (typically 3.5" w.c. for natural gas).

Quick tip: Use a soap‑and‑water solution on every threaded joint. Bubbles? Fix it now.

Step 6: Final Safety Checks & Pilot Lighting

What to do: Turn off the gas at the shut‑off valve, wait 5 minutes for any residual gas to dissipate, then follow Empire's lighting instructions. Most Empire models have a standing pilot or electronic ignition. If it's a standing pilot, light it with a long lighter or match, hold the reset button for 30 seconds, then release. If it doesn't stay lit, check the thermocouple alignment.

Important: Verify the flame pattern—should be mostly blue with minimal yellow tipping. Yellow flames indicate incomplete combustion (soot, CO risk). Adjust the air shutter per Empire's manual.

Step 7: Documentation & Handover

What to do: Fill out the warranty registration form (Empire requires it within 30 days). Provide the homeowner or building manager with the operation manual, a simple diagram of the shut‑off valve location, and a reminder: “Clean the logs and burner every season—dust buildup reduces efficiency.” That last line has saved me countless call‑backs.

What Most People Mess Up (And How to Avoid It)

After 100+ rush installations, the most common mistake is forgetting to check the actual gas line size until the heater is mounted. Five minutes of verification beats five days of correction. Also, don't assume the old vent cap is still compliant—codes change. We paid $800 extra on a job in March 2024 because the existing termination was too close to a window opening.

Bottom line: if you follow this checklist step by step, you’ll catch 90% of potential issues before they become emergencies. And if you're in a true rush (like a tenant moving in tomorrow), call Empire’s tech support—they actually pick up, unlike some vendors I won’t name.