Cheap Parts Are Expensive. That's Not a Contradiction.
Let me be direct: if you're shopping for replacement parts for Dimplex heaters or Dimplex infrared heaters and you're only looking at the lowest price, you're probably going to spend more money overall. I've managed our facility's HVAC and cooling budget for six years—about $30,000 in cumulative orders—and I've made this mistake myself. Twice.
The problem isn't that cheap parts are always bad. It's that the 'savings' you see on the invoice disappear when you factor in everything else: downtime, installation labor, replacement frequency, and the quiet cost of a system that's running but not running well.
Here's What I Found When I Audited Our 2023 Spending
In early 2024, I pulled every invoice for dimplex heater parts and infrared heater components we'd ordered in 2023. I had receipts from four different suppliers. What I found surprised me.
The cheapest vendor—let's call them Vendor X—had the lowest unit price on almost everything. Their fan motor for a Dimplex industrial unit was 22% cheaper than the next option. But when I calculated total cost of ownership (TCO), including the two emergency service calls we needed because one motor failed within 90 days and another arrived with a bent shaft, that 22% savings evaporated. Our actual cost ended up 14% higher than if we'd gone with the mid-tier supplier from the start.
The surprise wasn't the failure rate. It was the hidden costs attached to those failures.
- Time: Each emergency call meant a half-day of unplanned downtime for our production line.
- Labor: Our maintenance team's hourly rate is baked into every repair. A failed part means paying for the same labor twice.
- Hassle: Filing a warranty claim on a $45 part that costs $120 in labor to replace is not a win—it's a loss.
Why 'Infrared Heater' Parts Are a Different Animal
If you're buying parts for Dimplex infrared heaters, the stakes are slightly different but the principle is the same. Infrared heaters rely on precise emitter alignment and reflector condition. A cheap replacement emitter might work—for a while—but if its output spectrum is slightly off, or its lifespan is half the OEM spec, you're not saving money. You're deferring a cost, and usually adding to it.
I've seen this with deep freezer compressors too, by the way. The dynamics transfer directly: cheap compressors work until they don't, and when they don't, you lose product.
The One Question That Changed Our Procurement Policy
After that 2023 audit, I implemented a simple policy: we now require three quotes minimum for any replacement parts for Dimplex heaters or major components, and we evaluate on TCO, not unit price.
Our TCO formula is rough but effective:
Unit Price + (Expected Replacements × Labor Cost per Replacement) + Downtime Cost of Failure / Expected Lifespan
Plug in the numbers. You'll almost always find that the mid-tier OEM or certified replacement part is the cheapest option over a 12-month window. The cheapest part? It only wins if you assume nothing goes wrong. And in my experience, something always goes wrong.
Even after implementing this policy, I kept second-guessing. 'What if I'm overthinking this? What if the cheap part works fine?' I didn't relax until six months in, when our unplanned maintenance hours dropped by 40%.
But Wait—Isn't 'OEM' Just a Markup?
I hear this a lot. 'The OEM Dimplex part costs twice as much as a generic. It's the same thing in a different box.'
Sometimes that's true. But more often than not, it's not. The OEM part has been tested to a specific tolerance. The generic might meet that tolerance—or might not. The risk is that you don't find out until the part is installed and the infrared heater isn't heating evenly, or the deep freezer compressor is cycling too frequently.
I'm not saying you always need OEM. I'm saying you need to calculate the risk, not ignore it.
The Verdict: Stop Buying on Price Alone
You can save money on replacement parts for Dimplex heaters, infrared heaters, and cooling equipment—but not by chasing the lowest number on the quote. You save by choosing parts that perform reliably, and by factoring in everything that happens after the part arrives.
If I could redo my first two years of ordering parts, I'd invest more time upfront vetting suppliers and less money fixing avoidable failures. But given what I knew then—nothing about the hidden costs of cheap components—my choices were reasonable. Now I know better.
The cheapest part isn't a bargain. It's a bet. And I've stopped gambling with our budget.