Compared to older screw compressors, the Howden delivered a 12-15% reduction in specific power (kW per CFM). The asymmetric rotor profile minimizes blow-hole losses. For a 500 kW motor, this saves roughly $15,000–$20,000 annually in electricity.
Oil-injected Howdens require strict oil quality (typically synthetic, ISO VG 68–100). Using non-approved oil degrades performance and voids the warranty. The oil separator elements are effective but expensive ($800–$1,500 each). howden screw compressor
While service intervals are long, when something breaks, parts are expensive. A set of main bearings can cost $3,000–$5,000, and an OEM rotor replacement is nearly the cost of a new unit. Additionally, servicing requires specialized tooling and Howden-trained technicians—local general mechanics cannot handle it. Compared to older screw compressors, the Howden delivered
The slide valve and stepless capacity control are smooth. From 100% down to 25% load, the compressor maintains stable discharge pressure without surging. The Vi (volume ratio) adjustment is also effective for varying suction pressures. While service intervals are long, when something breaks,
Oil change intervals are rated at 8,000+ hours (vs. 4,000–6,000 for budget brands). Bearing life is conservatively rated at 50,000 hours. After 12,000 hours, our unit showed no measurable rotor wear. The Bad (Cons) 1. High Initial Cost (Premium Tier) A Howden screw compressor typically costs 30-50% more than a comparable Chinese or Eastern European brand. You are paying for longevity and efficiency, but the capital expenditure (CAPEX) is a barrier for small operations.
First cost is your primary metric, or your application is light-duty (less than 4,000 hours/year).