Need Fast, Dependable
A/C, Cooling, or Electrical Service?
Our Expert Technicians Are Ready Across Port Harcourt, Rivers State & Umuahia, Abia State! Rapid Same-Day Dispatch.
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Reliable, Experienced &
Exstone Tech Certified
Founded and led by Engr. Emmanuel Okorie, ExstoneTech Int'l Ltd has been delivering gold-standard HVAC engineering, precision climate control, duct fabrication, and electrical services across Rivers State and Abia State.
Whether you need a quick emergency AC repair, an industrial VRF system installation for a modern commercial facility, or our comprehensive Comfort as a Service annual maintenance retainer, our certified technicians take care of everything.
We use only 100% genuine parts, eco-friendly refrigerants (R410a, R32), and certified deep-vacuum purging to guarantee our SIGNATURE UNBEATABLE WORKMANSHIP WARRANTY.
Comprehensive Cooling & HVAC Solutions
Engineered for optimum thermal comfort, air purity, and low power consumption across Rivers and Abia States.
Split & Inverter AC Systems
Ultra-Quiet, High Energy Efficiency Cooling
Expert installation, precision copper piping, gas charging, and rapid diagnostics for all residential and commercial split & inverter systems.
Ducted & VRF/VRV Central HVAC
Industrial Multi-Zone Climate Automation
Comprehensive VRF, package units, and central ceiling ducted systems for duplexes, corporate headquarters, hotels, and luxury apartments.
Ventilation & Inline Duct Fans
Fresh Air Processing & Extraction
Heavy-duty inline extraction fans, fresh air handling, bathroom and kitchen exhaust systems ensuring pristine indoor air circulation.
Electrical, Piping & Control Wiring
Heavy-Duty Power & Surge Guard Architecture
Industrial electrical panels, phase sequencers, contactors, heavy-gauge cable distribution, and condensate drainage engineering.
Commercial AMC & Maintenance
Zero Downtime Corporate Maintenance Contracts
Routine preventative maintenance plans for banks, hospitals, estates, and offices to extend compressor life and cut energy bills by 30%.
Industrial Chillers & Cold Rooms
Precision Refrigeration for Logistics & Plants
Air-cooled and water-cooled chiller troubleshooting, compressor overhaul, and cold room construction for agro and pharmaceutical storage.
Exclusive HVAC Special Offers & Savings
Premium Climate Control Packages for Homes, Offices, and Commercial Facilities in Rivers & Abia State.
Complete AC Tune-Up & Chemical Sanitization
Restore 100% Ice-Cold Cooling & Eliminate Musty Odors
Full disassembly, antibacterial coil wash, blower decontamination, drain line clearing, electrical amp check, and refrigerant level verification.
Master Installation & Copper Piping Package
Certified Professional Mounting by Exstone Engineers
Includes high-grade copper piping, heavy-duty anti-vibration wall brackets, vacuum purging before gas release, and electrical connection.
Our Promise To You
Uncompromising standards, certified engineers, and honest customer care backed by our solid corporate guarantees.
RAPID DISPATCH GUARANTEE
When your AC breaks down in the heat, every minute counts. Our mobile technicians are strategically positioned across Port Harcourt and Umuahia for fast arrival.
TRANSPARENT UPFRONT PRICING
You approve the exact quotation before any wrench touches your unit. Fair, standardized rates for genuine parts and expert craftsmanship.
100% SATISFACTION GUARANTEE
Every repair and installation carries our signature warranty. If an issue recurs within the warranty window, we fix it at zero extra charge.
It Only Takes A Second To
Get Started
Fill out this quick form and our technical team will contact you within 15 minutes to confirm dispatch or provide your free estimate.
Commercial AMC & Flexible Solutions
COMFORT AS A SERVICE
Enjoy all the benefits of uninterrupted ice-cold heating & cooling WITHOUT the burden of costly emergency breakdowns, inflated repair charges, or premature compressor failures. Our corporate Annual Maintenance Contracts (AMC) cover routine chemical washes, filter replacements, and priority callouts.
PROJECTS & RETAINERS
Enjoy luxury climate engineering without the burden of 100% upfront capital outlays. For builders, developers, and corporate facilities across Rivers and Abia State, we offer phased milestone billing across equipment procurement, copper line piping, duct fabrication, and final commissioning.
Serving Port Harcourt & Umuahia
Led by Engr. Emmanuel Okorie • Managing Director & CEO, ExstoneTech Int'l Ltd- Fully accredited HVAC Engineering contractor (CAC & COREN compliant engineering standards).
- Strategic operations: Head Office at East-West Rd by Tank, Rumuokwurushi (PH) and Branch Office at Umuobia Housing Estate, Olokoro Rd (Umuahia).
- Equipped with modern electronic leak detectors, digital manifold gauges, and high-vacuum micron evacuation pumps.
- Rapid dispatch coverage spanning GRA Phase 1-3, Peter Odili, Trans-Amadi, Choba, Ada George, and Umuahia metropolis.
- 100% genuine factory spare parts, high-grade seamless copper tubes, and authentic virgin refrigerants.
- Uncompromising Workmanship Guarantee backed by written warranty certificates.
Our Work in Rivers State & Abia State
Authentic installations, VRF central systems, duct fabrication, and mechanical engineering executed by ExstoneTech engineers.
Commercial Condenser & VRF Unit Commissioning
Exstone certified technician servicing high-capacity outdoor condenser unit.
Multi-Story Modern Architectural HVAC Engineering
Complete HVAC, refrigerant piping and fresh air circulation design for residential complex.
Galvanized Central Ductwork & Plenum Installation
Insulated spiral and rectangular acoustic ducting runs across roof trusses.
Ceiling Grid & Linear Slot Diffusers Alignment
Laser-aligned linear slot diffusers integrated into modern false ceiling suspension.
ExstoneTech at HVACR West Africa Expo
CEO Engr. Emmanuel Okorie with international HVAC technology partners.
Air Handling & In-Line Duct Extraction Technology
High-efficiency acoustic inline ventilation fans for commercial and industrial zones.
Heavy-Duty Architectural Air Diffusers & Grilles
Custom powder-coated aluminum return air grilles and multi-directional dampers.
Clean Air Filtration & Filter Mesh Assembly
Precision fitment of anti-microbial clean air filters for commercial ventilation.
“Engr Emmanuel Okorie and the ExstoneTech team handled the central ducted AC system for our 5-bedroom duplex. Their duct insulation and linear diffusers look immaculate! The cooling is exceptionally quiet and even throughout every single room.”