If you’re evaluating Howden air and gas handling equipment in 2025, stop looking at the purchase price. The number that matters is total cost of ownership (TCO): uptime, maintenance, spare parts, and the cost of an unplanned failure. I manage an industrial refrigeration equipment budget of about $180,000 per year, and for six years I’ve tracked every invoice, every repair, and every 'small' extra fee. That habit taught me to treat a low quote as a warning sign until I understand all the costs behind it.
Here is the framework I use when someone asks me to approve a Howden compressor, fan, or heat exchanger purchase.
The used Howden screw compressor trap
A used Howden screw compressor looks like a great way to stretch a tight capex budget. In 2023, I almost bought one at 40% below new price. The seller’s photos looked clean, the nameplate indicated the right model, and the price was attractive. But the unit was configured for a different refrigerant than we needed and didn’t have the economizer connection. I assumed 'same model' meant same performance. It didn’t.
We signed the PO before my engineering lead noticed the mismatch. The supplier wasn’t trying to trick us; they sold exactly what we wrote down. I said 'used compressor in good condition.' They heard 'buyer accepts whatever is on the skid.' The cost to fix the configuration was about $6,500 in pipework, adaptors, and engineering time. That ate most of the 40% discount.
The used compressor we eventually bought did work out, but only after I spent a day on the phone with a Howden distributor verifying part numbers and availability. That call should have happened before the PO, not after. Now I treat verification as a paid activity: it takes time, but it’s cheaper than a field retrofit.
That experience pushed me to build a TCO spreadsheet for used equipment. It includes purchase price, shipping, installation, configuration changes, spare parts, planned maintenance, and an estimated downtime cost for the first two years. For a used compressor, the biggest variable is service history. A unit with full documented service can be a genuine deal. A unit with no service records is a lottery ticket.
What is a heat exchanger (and why it belongs in this conversation)
If you landed here because you searched 'what is a heat exchanger,' here’s the simple answer: it moves heat from one fluid to another without mixing them. In an industrial refrigeration system, it might be a shell-and-tube exchanger using ammonia, or a plate exchanger in a process line. Howden supplies these as part of a broader air and gas handling package.
I used to treat heat exchangers as the boring part of a project. Then in Q2 2024, we saw a capacity drop in one of our cooling loops. The compressor was running fine. The cooling fan was spinning. But the heat exchanger was fouled with scale and debris. We opened it and found a significant portion of the tubes restricted. The cleaning invoice was less than $800, but the production loss and emergency labor brought the real cost to close to $12,000. (Mental note: never assume a passive component is maintenance-free.)
The hidden cost of 'it’s just maintenance'
When I audited our 2023 spending, I found that 21% of our 'budget overruns' were not from compressor failures. They came from neglected heat exchanger cleaning, unplanned fan motor replacements, and small parts that should have been ordered in advance. None of those items showed up on the original quotes. I now include a contingency line for 'external surprises' in every equipment project. It doesn’t mean the amount will be spent; it means there is room to respond without an emergency purchase order.
The Howden fan company website is a first-round cost saver
The Howden fan company website would have saved us time. I don’t say that lightly, because I’m usually skeptical of supplier marketing pages. But Howden’s product pages list technical documentation and performance information that help with spec verification before you request a quote. When I reviewed our 2025 budget in January 2025, I used howden.com to double-check fan performance ranges and compressor accessories.
In 2024, a vendor quoted a Howden fan for a new cooling tower. The price looked fair, but the performance curve on the quote didn’t match the fan model’s curve on the website. I asked the vendor to recheck. It turned out they had selected a standard fan instead of the high-temperature version needed for our application. That one website check saved us from a costly reinstallation.
One reason the website matters: terminology. If you google 'tower fan,' most of the results are for a small household appliance. In an industrial plant, a tower fan usually means a cooling tower fan—a large unit with a motor, gearbox, drive shaft, and a propeller that moves industrial volumes of air. That is a completely different purchasing conversation. Similarly, a 'cooling fan' in a process context isn’t a consumer product; it’s a mechanical package with vibration limits, lubrication requirements, and operational controls. Howden’s website groups these products clearly, which makes it easier to ask the right questions.
What I check before spending money on these systems
A few things go on my checklist for any Howden compressor, fan, or heat exchanger project:
- Complete service history with dates and hour counts, not just a summary, for used Howden screw compressors.
- OEM performance curves for the specific model and duty, ideally from the Howden fan company website or the manual.
- Spare parts availability and lead times from Howden or a qualified distributor.
- A clear statement of what is not included in the price: controls, piping, economizer, vibration monitoring, shipping.
The last point is the one that caused my near-miss. If the quote doesn’t list the exclusions, the exclusions still exist.
When to ignore what I just said
The TCO framework has limits. If you’re buying a used Howden compressor for a low-criticality application that can tolerate downtime, and you have an in-house engineer who can inspect the unit in person, the discount can be worth it. If the equipment will be retired within a couple of years, the risk of a service gap matters less. But for a main process line, unplanned downtime is the real price, and a new unit with a service contract is often cheaper in the long run.
One more boundary: this is my experience in industrial refrigeration and gas handling. Your duty cycle, site conditions, and maintenance crew are different from mine. Use the framework, run your own numbers, and keep checking the manual. And if a deal feels too good to be true, ask for the service history first. Seriously. It’s the cheapest filter I know.
