Al Waleed A/C Spare Parts Trading LLC · Export to Nigeria & Africa
Sigma Compressor Nigeria —
Reciprocating Refrigeration Models
SIGMA reciprocating hermetic compressors for commercial refrigeration — cold rooms, display cabinets, bottle coolers and commercial condensing units. R134a · R404a · R290. Competitively priced tropical-climate compressors exported from Dubai to Lagos and Abuja.
+971 566 952 848 · +971 4 224 9512 · Al Rigga – Deira, Dubai, UAE
Hermetic Design
R134a · R290
Tropical Rated — 52°C
Distributed Brand
Days to Lagos
Quote Turnaround
SIGMA Compressors — The Full-Brand Commercial Refrigeration Choice Alongside SIGMA Tools
SIGMA is one of Al Waleed’s own-distributed brands — best known in Nigeria for the SIGMA HVAC maintenance tools range: condenser cleaner, SG-50 cordless pressure washer, vacuum pumps, and manifold gauges. Alongside the tools range, SIGMA also produces reciprocating hermetic compressors for commercial refrigeration — light and medium commercial applications using R134a, R404a, and R290 that serve the same bottle cooler, display case, walk-in cold room, and commercial condensing unit segment covered by Danfoss FR and Kulthorn KR series.
For Nigerian dealers and contractors who already stock SIGMA tools and maintenance products from Al Waleed, adding SIGMA compressors to the same import order creates a practical full-brand SIGMA position in their commercial refrigeration service business — tools, chemicals, and compressors from a single brand on a single Al Waleed invoice. SIGMA compressors are priced competitively for the Nigerian commercial refrigeration market and are T3-rated for tropical ambient operation. They occupy the same position as Kulthorn in Nigeria’s commercial refrigeration replacement market — a cost-effective, reliable alternative to European brands for price-sensitive Nigerian cold room and bottle cooler service work.
SIGMA Compressor + SIGMA Tools — One Brand, One Shipment
A Nigerian refrigeration contractor who orders SIGMA compressors alongside SIGMA condenser cleaner, SIGMA vacuum pump, and SIGMA manifold gauges from Al Waleed receives a single consolidated shipment covering the complete commercial refrigeration service toolkit — replacement compressor, cleaning chemicals, and service tools — all under one brand from one Dubai supplier. This eliminates the need to source commercial refrigeration compressors from a separate channel, reduces shipping cost per item, and simplifies the import documentation at Nigerian customs.
SIGMA Compressor Range — Commercial Refrigeration Models for Nigeria
SIGMA Light Commercial — HBP R134a / R290
HBP · R134a · R290 · 1/6–1/2 HP · Medium Temperature
SIGMA light commercial reciprocating compressors cover the HBP (High Back Pressure) medium-temperature segment — the compressors inside plug-in bottle coolers, glass door merchandisers, under-counter commercial refrigerators, and hotel mini-bar units across Nigeria. Running on R134a and R290, these are the same application class as the Danfoss FR and Kulthorn KR series. SIGMA light commercial compressors give Nigerian contractors a third competitive option in this high-volume segment — with the advantage of SIGMA brand consistency for those already buying SIGMA tools from Al Waleed.
Applications: Bottle coolers · glass door merchandisers · hotel mini-bars · petrol station display fridges · under-counter commercial refrigeration
SIGMA Medium Commercial — MBP R404a
MBP · R404a · R134a · 1/3–3/4 HP · Medium & Low Temp
SIGMA medium commercial compressors cover the MBP and low-temperature condensing unit segment — walk-in cold rooms, supermarket display refrigeration, commercial condensing units, and food service cold storage in Nigeria running on R404a. For Nigerian refrigeration contractors who service supermarket cold rooms and commercial display cases and already stock SIGMA tools and chemicals, SIGMA medium commercial compressors provide an on-brand cost-effective alternative to Kulthorn AE series for price-sensitive Nigerian cold room replacement work.
Applications: Walk-in cold rooms · supermarket display cases · commercial condensing units · food service refrigeration
SIGMA vs Kulthorn vs Danfoss — Nigeria Commercial Refrigeration
| Consideration | SIGMA | Kulthorn | Danfoss |
|---|---|---|---|
| Price position | Most competitive | Competitive | Premium |
| Brand advantage | Consistent with SIGMA tools range | Tropical market proven track record | European precision · pharma / hospital spec |
| T3 tropical rating | Yes — confirmed Al Waleed supply | Yes — confirmed Al Waleed supply | Yes — confirmed Al Waleed supply |
| Best Nigerian application | Price-sensitive bottle coolers · cold rooms · SIGMA-brand dealers | Price-sensitive commercial · tropical market experience | Pharma · hospital · international project spec |
| Consolidation with other SIGMA products | Yes — same brand, same shipment as SIGMA tools | Yes — same shipment as all HVAC parts | Yes — same shipment as all HVAC parts |
SIGMA Compressor Installation — Key Requirements for Nigerian Technicians
Diagnose Before Replacing
Test the starting relay and overload protector before condemning the SIGMA compressor. These fail far more often than the compressor body in Nigeria’s high-cycle-count generator-switching environment. A failed relay costs a fraction of a compressor. Confirm the compressor itself is the fault before ordering a replacement.
Replace Filter Drier — Mandatory
Replace the filter drier alongside every SIGMA compressor installation. A failed compressor contaminates the refrigerant circuit. Fitting a new SIGMA compressor into a contaminated circuit without a new filter drier destroys the replacement unit from its first hour of operation. Al Waleed stocks Danfoss filter drier cores alongside SIGMA compressors in the same Nigeria shipment.
Use Correct Oil Type
SIGMA R404a compressors require POE oil. SIGMA R134a compressors use mineral or POE oil depending on model — confirm from the compressor data sheet. SIGMA R290 compressors use mineral oil. Never mix oil types. Motorol compressor oils in all correct grades are available from Al Waleed in the same Nigeria shipment.
Clean Condenser Before Start-Up
Clean the condenser coil thoroughly with SIGMA AC condenser cleaner before commissioning the new compressor. A blocked condenser coil raises head pressure to damaging levels within minutes in Nigeria’s ambient heat. The SIGMA condenser cleaner is available from Al Waleed alongside the compressor — the same brand, the same shipment.
Frequently Asked Questions — SIGMA Compressors for Nigeria
Can a SIGMA compressor replace a Kulthorn or Danfoss in a Nigerian bottle cooler?
In most cases yes — all three are HBP reciprocating hermetic compressors for the same medium-temperature plug-in commercial refrigeration application class, with largely standardised physical dimensions and electrical connections within this compressor category. Before substituting, confirm that the replacement matches the original on refrigerant type, HP capacity, voltage, and back pressure classification. WhatsApp Al Waleed with the original compressor model number for cross-reference confirmation before ordering.
Can SIGMA compressors be ordered alongside SIGMA tools in one Nigeria shipment?
Yes — and this is one of the main practical reasons for choosing SIGMA compressors. A Nigerian contractor or dealer can place a single Al Waleed order covering SIGMA compressors, SIGMA condenser cleaner, SIGMA evaporator foam cleaner, SIGMA SG-50 pressure washer, SIGMA vacuum pump, SIGMA manifold gauges, SIGMA stop leak, filter drier cores, and R404a or R134a refrigerant — all consolidated in a single sea freight shipment from Jebel Ali to Lagos or Abuja on one commercial invoice. This is the full SIGMA commercial refrigeration service kit in one order.
How do I identify the correct SIGMA replacement compressor for a Nigerian application?
Photograph the nameplate on the failed compressor — model number, refrigerant type, HP or wattage, voltage, and back pressure classification (HBP, MBP, or LBP) — and WhatsApp it to Al Waleed’s export desk. Alternatively, describe the application (bottle cooler, walk-in cold room, display case), the refrigerant type, and the approximate capacity, and our team recommends the correct SIGMA model and confirms current stock availability from Dubai within 24 hours.
Africa Export Desk — Open Mon–Sat 8AM to 10PM Dubai Time
Send model or application — confirmed price within 24 hours
SIGMA reciprocating compressors HBP and MBP · R134a · R404a · R290 — combine with SIGMA tools, condenser cleaner, filter driers and refrigerant in one shipment to Lagos or Abuja
Related Products & Pages
- All SIGMA Products — compressors, tools, cleaners and accessories
- SIGMA HVAC Parts Nigeria — condenser cleaner, pressure washer, vacuum pumps, manifold gauges
- Danfoss Compressor Nigeria — FR, SC and NL series for commercial refrigeration
- Kulthorn Compressor Nigeria — KR and AE series competitive commercial refrigeration
- Tecumseh Compressor Nigeria — HBP, MBP and LBP series
- Filter Drier Cores — alongside every compressor replacement
- Motorol Compressor Oils — POE for R404a · mineral for R134a and R290
- MAXRON R404a — for SIGMA medium commercial refrigeration systems
- Refrigeration Parts Nigeria — contactors, timers, thermostats
- Wholesale and Bulk Pricing for Nigerian Dealers
- How to Order and Ship from Dubai to Nigeria
- About Al Waleed — Dubai HVAC exporter since 2005
- HVAC Spare Parts Nigeria FAQ
Order SIGMA Compressors for Nigeria from Dubai
SIGMA reciprocating hermetic compressors for commercial refrigeration — HBP R134a and R290 for bottle coolers and display cases · MBP R404a for walk-in cold rooms and condensing units. Combine with SIGMA condenser cleaner, SIGMA vacuum pump, SIGMA manifold gauges, Danfoss filter driers, and R404a refrigerant in a single sea freight shipment from Jebel Ali to Lagos. Send model or application description via WhatsApp — price within 24 hours.
+971 566 952 848 · +971 4 224 9512 · Al Rigga – Deira, Dubai, UAE · contact@alwaleedhvac.com