I'm an office administrator for a 150-person manufacturing company. I manage all the facility maintenance and MRO ordering—roughly $90,000 annually across 20 vendors. I report to both operations and finance. When our old heating system started to fail last year, I found myself in the middle of a debate: replace the boiler with a new Weil-McLain system, or switch to electric heaters.
The numbers said one thing. My gut said another. And I'm still dealing with the fallout from that decision. Here's how I now think about comparing these two options—using total cost thinking, not just the sticker price.
The Comparison Framework: More Than Just the Price Tag
When we first started looking at options, I pulled quotes for both. The electric heater route looked cheap. A few high-output units, maybe a backup or two. The Weil-McLain boiler system—a high-efficiency gas model—was way more expensive upfront. Every spreadsheet analysis pointed to the electric option. Something felt off. I went with my gut, but I didn't dig deep enough. Turns out that 'cheap' electric path had a ton of hidden costs.
So, I'm comparing these two not on initial price, but on total cost of ownership (TCO):
- Upfront Cost: Equipment, installation, and any immediate modifications.
- Operating Cost: Energy consumption over time, plus routine maintenance.
- Hidden & Risk Costs: Replacement parts availability, downtime risk, and compliance.
- Time Cost: The hours I and my team spend dealing with it.
Dimension 1: Upfront Cost (The Obvious One)
This is where electric heaters win, no contest. A handful of commercial-grade electric units for our main shop floor and office space? Maybe $8,000–$12,000 for the equipment. A Weil-McLain EVG or Ultra series boiler system, including the boiler, controls, piping, and a new indirect water heater? We were looking at $15,000–$25,000 before installation. The difference was stark.
But then we got the installation quotes. The electric route needed a new 480V sub-panel and heavier wiring run to the main shop. That was another $4,000. The Weil-McLain system needed a gas line upgrade and a proper venting system—add another $2,000. Suddenly, the gap wasn't so huge. The electric option was still cheaper, but not by as much as the first glance suggested.
The surprise wasn't the price difference. It was how much hidden value came with the boiler.
Dimension 2: Operating Cost & Efficiency
This is where the TCO thinking flipped the script. We ran the numbers for our region's climate and energy prices (as of January 2025). Natural gas is significantly cheaper per BTU than electricity here. A Weil-McLain high-efficiency boiler (with a 95% AFUE rating) is roughly 2–3 times cheaper to run per hour of heat output compared to an electric resistance heater (which is 100% efficient, but electricity is expensive).
The numbers said go with the boiler over a 5-year period. My gut said the electric option would lead to headaches. I still kick myself for not fully trusting that gut feeling. The electric heaters, while cheap to buy, had a ton of operational quirks. The space heaters we bought for the shop were super noisy and tripped the new breakers constantly.
Every cost analysis pointed to the budget option. Something felt off about their responsiveness. Turns out that 'slow to reply' was a preview of 'slow to deliver.' The vendor for the backup electric unit was terrible.
Dimension 3: Parts Availability & Service (The Real Cost Driver)
Here's the killer. I manage parts ordering. I deal with heating parts every day—burners, ignitors, blowers, control boards. For a Weil-McLain boiler, I can get a replacement control board or a blower motor within 24 hours from any of my local supply houses. The part numbers are standard. The techs know them. If a component fails, it's a same-day fix.
For the electric heaters? Not so much. One of our main units had a failure within the first year. The company that made it didn't stock the specific relay board. The part was on backorder for 6 weeks. We had to scramble, renting temporary propane heaters (which forced another sourcing issue) at $150 a day. That one failure cost us over $4,000 in downtime and rental fees, completely wiping out the upfront savings.
Never expected the budget vendor to perform worse than a new system purchase. Turns out their process was actually more refined for our specific needs, but their supply chain was a total mess.
Dimension 4: Hidden Costs & Risk
I now calculate TCO before comparing any vendor quotes. For this heating decision, the hidden costs were:
- Electric Heater TCO: Base cost ($12,000) + installation upgrade ($4,000) + downtime/rental ($4,000) + higher energy bills (+$3,000/year) + vendor management time (5 hours). Total over 5 years: ~$35,000+
- Weil-McLain Boiler TCO: Base cost ($20,000) + installation upgrade ($2,000) + annual maintenance ($500/year) + reliable parts availability. Total over 5 years: ~$24,500
The $500 quote turned into $800 after shipping, setup, and revision fees. The $650 all-inclusive quote was actually cheaper. In this case, the expensive boiler was the cheaper total solution by a wide margin.
One of my biggest regrets: not building vendor relationships earlier. The goodwill I'm working with now took three years to develop. With Weil-McLain, I have a direct line to a technical support rep who can help with a weird error code on a control board. With the electric heater vendor, I got an automated email response.
Which One to Choose? Scenario-Based Advice
I'm not saying a boiler is always better. It depends on your situation.
Choose electric heaters when:
- You have a small space (under 500 sq ft) with low heat load.
- You need temporary, portable heat for a specific job.
- You don't have easy access to natural gas or propane.
- Your energy costs for electricity are extremely low (e.g., you have solar or cheap off-peak rates).
Choose a Weil-McLain boiler system when:
- You're heating a large space (a whole shop, office, or multi-unit building).
- You want the lowest long-term operating cost.
- You need reliability and hate unscheduled downtime. The parts ecosystem is a huge safety net.
- You want a single, durable system that lasts 20+ years with proper maintenance.
The bottom line? I nearly made a costly mistake chasing a low upfront price. The Weil-McLain system cost more to install, but it's cheaper to own. And for a facilities manager like me, that peace of mind is worth a ton.
