I've been an HVAC contractor handling gas heating equipment orders for 11 years. I've personally made—and documented—14 significant mistakes, totaling roughly $18,000 in wasted budget. That's not a flex. It's a tuition payment, and I'd rather you not pay it at all.
This article is about Empire Comfort Systems wall heaters. Not a product review—there are enough of those. Not a "buy this model" post, because I don't know your situation. Think of it as field notes from the scenarios I've lived through while specifying, ordering, and installing these gas wall heaters in the Belleville area and across our service region.
The core message up front: there's no single best Empire wall heater. There's the right unit for your situation, and there's a fast path to a costly mistake if you pick without checking.
When I first started ordering Empire units in 2014, I assumed a wall heater was a wall heater. Measure the space, pick a BTU rating, order it. Simple.
Three expensive errors later, I learned otherwise.
Every significant mistake I've made fell into one of three scenarios: replacing an existing unit, installing into a bare wall, or ordering multiple units at once. If you're dealing with an Empire Comfort Systems wall heater, you're probably in one of them too.
Scenario A: Replacing an Existing Empire Wall Heater
This is the most common situation, and maybe the sneakiest. You have an old Empire unit on the wall. It's shot, or it's burning inefficiently, or it just looks like it survived a war. The replacement should be straightforward, right?
My classic mistake happened in March 2017. I was swapping out an older natural-draft unit on a small commercial job. The existing heater used a 3-inch B-vent. The new model I ordered required a 4-inch vent connection. I didn't check the spec sheets against each other. I assumed "same brand, same vent type" meant everything matched.
It didn't.
There we were, on-site, with a wall heater that wouldn't connect to the vent system already in place. $320 in adapters and a one-week schedule delay later, I had a simple rule: verify vent size and type before ordering any replacement.
For a replacement, run through these four checks before you call your distributor:
- Venting type and size. Empire wall heaters use different venting configurations. Direct-vent, B-vent, natural draft. Match the replacement to what's already installed—or budget for new venting, which shifts you toward Scenario B.
- Rough-in opening dimensions. Take the trim off the old unit and measure the actual opening, not the decorative faceplate. I ordered a heater expecting a standard 16-inch width once, and the rough opening turned out to be narrower at the top than the bottom. Not ideal, but workable—after shimming.
- Gas line size. If you step up in BTU output, the existing half-inch line may not deliver enough. Most replacements we do are same-size or smaller, but "most" isn't "all." Check the manual's gas line sizing table.
- Thermostat wiring. A millivolt unit and an electronically-controlled unit do not wire the same way. I once told a distributor "standard thermostat" when the unit called for an electronic control. We discovered the mismatch when the wall thermostat clicked on and the heater did absolutely nothing.
Say what you mean, and ask what you're not saying. That's the pricing lesson I'll get to later, and it applies here too.
Scenario B: Installing Where No Heater Exists
Retrofits are a different animal. There's no old unit to copy, so assumptions multiply.
The one that stung me hardest happened in September 2022. A rehab project in a 50s-era building. Client asked for a wall heater in the living room. I checked the floor plan, picked a direct-vent unit, ordered it, and showed up to install. Then I measured the wall cavity. The stud bay was 5.5 inches deep. The unit required 6.5 inches for proper clearance to combustibles.
From the outside, the job looked simple. Open wall, new construction—what could go wrong? What I didn't check was the cavity depth. That oversight cost $890 in carpentry to build a chase, plus a one-week delay while the framing crew came back.
People assume a gas wall heater installs like a big baseboard. It doesn't. There's venting, gas, clearances, and—on some models—condensate to deal with.
Here's what goes on my pre-order list for new retrofits:
- Wall cavity depth and clearance. Check the Empire installation manual for clearances to combustibles before you order. If the unit needs more depth than the existing framing provides, build a chase first. After the fact, it's expensive.
- Vent termination location. Direct-vent units exit horizontally through the wall. Walk the exterior before ordering. Windows, doors, decks, A/C condensers—local code has clearance distances, and the inspector will be measuring them.
- Gas line routing. The path from the nearest gas supply is the hidden god of retrofit budgets. Unfinished basement? Cheap. Finished walls and tile floor? Expensive. Get a number for this specifically.
- Condensate handling. Some power-vented heaters produce condensate. Where does it go? A floor drain, a condensate pump, a tube to the outside? It's amazing how often this shows up in the "what's NOT included" column.
Scenario C: Ordering Multiple Units
Apartments, hotels, duplexes, group homes. When you order more than a handful of Empire wall heaters, the failure mode shifts from physical installation to specification consistency.
My most expensive lesson here came in 2023. I ordered 24 wall heaters for an apartment building. Ten had electronic controls. Fourteen had millivolt controls. Same manufacturer, same BTU range, different control ecosystems. I approved the order without catching the split.
Why did it happen? The person at the distributor's counter subbed a "similar" unit for part of the order to improve lead time. I didn't catch it on the paperwork. The pallets arrived and suddenly the electrician, the trim carpenter, and the service tech were all asking the same question: which unit goes where?
The real cost was bigger than the receipt. Two weeks of scheduling confusion, a stack of change orders, and a client whose confidence in us never fully recovered. That's the part that doesn't show up on a P&L but follows you into the next bid.
For multi-unit orders, my rule is simple: one model, one control type, written confirmation.
- Standardize on one spec. The temptation to upgrade "just unit 12" or accept a "similar" substitute is how you end up with a maintenance team that hates you.
- Confirm parts availability. Before committing, ask how long a replacement blower or thermostat takes to arrive. The manufacturer's support is solid, but the distributor's shelf is what gets you through a tenant emergency.
- Get lead times in writing. When 24 units ride on a delivery date, "should be fine" isn't an answer. It's a gamble.
How to Tell Which Scenario You're In
Not sure where you fit? Here's the self-diagnosis I run when a client asks me to look at a project:
If a wall heater is currently sitting there, with a vent and a gas line already in place, and you're only swapping the appliance itself—that's Scenario A. Your highest risk is a spec mismatch on vent size, opening dimensions, and wiring.
If there's no heater on the wall, and you're cutting framing, running gas, and terminating a vent—that's Scenario B. Measure the wall cavity before you order. Twice.
If you're ordering for multiple rooms or units and you need the same solution repeated—that's Scenario C. Your highest risk is mixing model specs and underestimating support needs.
They overlap, honestly. A single retrofit is Scenario B. The same retrofit across 24 apartments is Scenario B plus C. Figure out which dominates and put your energy there.
What "What's NOT Included" Really Means
Now the money conversation, because this is where my 47-error count comes home.
I've learned to ask "what's NOT included" before I ask "what's the price." That single habit changed how I buy gas heating equipment.
A quote for an Empire Comfort Systems wall heater can come in lower than a competitor's. Then you find out that price doesn't include the vent kit, the mounting bracket, or the thermostat wire. It also doesn't include the gas line work, because that's "on your side." Suddenly the cheaper quote is the expensive one.
The vendor who lists all fees upfront—even if the total looks higher—costs less in the end. I've proven this to myself more than once.
In 2024, I compared two distributors on a 12-unit order for a small property. One quoted a base price that looked 12% lower. The other quoted a higher base but explicitly included vent kits, mounting brackets, and one pre-installation tech call. The second one finished on time. The first one was still waiting on a "small surcharge" for the vent kits to clear.
I also have a personal entry in the penny-wise ledger. I saved $50 once by buying an off-brand vent-adapter kit instead of the factory Empire kit. It didn't seat correctly. The inspector flagged it. I paid $145 for the factory kit and a $95 re-inspection fee. That's $240 to save $50. Not a math error—a decision error.
Granted, this approach makes the upfront number look bigger, which isn't easy to explain to a client comparing bids. But I've stopped apologizing for it. The transparent quote is the honest quote.
Since our team's pre-ordering checklist went on the wall in Q1 2024, we've caught 47 potential order errors. That number stings a little, because it means my earlier process was failing in ways I wasn't seeing. But now it's on paper, and it's already caught three vent-size mismatches that would have been repeats of my 2017 mistake.
Which Empire Wall Heater Should You Choose?
The honest answer: it depends on your scenario. That's not a dodge—it's the entire point of this article. The right Empire Comfort Systems wall heater is the one that matches your venting, fits your wall cavity, uses wiring you can actually support, and comes with a quote that lists everything.
If you're working through this in the Belleville area and get stuck on a spec question, the Empire support line has been genuinely helpful to me—more helpful than I deserve, given the number of times I've called. Just do the basic homework first: vent size, cavity depth, and the parts list on the quote.
I didn't always do that.
Now I do.
