FAQ Your Comprehensive Guide to Maintenance & Fault Questions in Refrigeration and Freezing Systems
I. Comparing Refrigeration Systems
What is the fundamental difference between cold rooms and freezer rooms?
The choice depends on the type of product stored, room size, frequency of door opening, and outdoor climate conditions in Saudi Arabia.
How do I choose the right system for my cold storage warehouse?
The difference lies in temperature ranges: cold rooms operate between +1°C to +5°C for fresh products, while freezer rooms operate below -18°C for frozen products.
II. Faults & Technical Solutions
What are the most common causes of filter dryer damage?
It balances the pressure inside the room when temperatures change, preventing difficulty opening doors or structural damage to the unit.
Why does the cold room temperature suddenly rise?
The main cause is the accumulation of moisture or impurities in the refrigeration cycle, leading to blockage of refrigerant flow and additional pressure on the compressor.
How do I know if the Expansion Valve needs replacing?
The cause is often a refrigerant gas leak, a faulty expansion valve, or a blocked evaporator unit.
[ Read our detailed article: Three Fatal Technical Errors in Cold & Freezer Rooms ]
What is the role of a Pressure Relief Valve?
When you notice ice accumulation on the evaporator or unstable temperatures inside the room despite the compressor running continuously.
[ Read our detailed article: Thermal Expansion Valve Installation Error ]
III. Maintenance & Operation in Saudi Arabia
What is the most suitable PU insulation thickness for warehouses in Saudi Arabia?
Due to the extreme heat, we recommend a minimum thickness of 100mm for cooling and 150mm for freezing to ensure energy efficiency.
How often should preventive maintenance be performed?
Ensure the integrity of the insulating gaskets and keep doors tightly closed to minimize warm air infiltration.
Does dust affect the efficiency of refrigeration units?
We recommend preventive maintenance at least every 3 months to ensure condenser cleanliness and compressor efficiency.
What are the best practices for maintaining cold room doors?
Yes, dust accumulation on condensers reduces heat exchange efficiency, leading to increased electricity consumption and compressor damage.
[ Read our detailed article: Refrigeration Unit Installation Guide ]
IV. General & Commercial Questions
Do you provide medical refrigeration solutions (hospitals)?
The cost depends on insulation efficiency, compressor type, and set temperature. At Hassounah Refrigeration (HRC), we design systems to be the most energy-efficient.
What is the monthly operating cost of a large cold room?
Yes, we provide precise temperature control systems dedicated to medical facilities to ensure the safety of medicines and vaccines.
Can cold rooms be installed in small restaurants?
By equipping the system with phone-connected alarm devices and backup systems (UPS) or emergency power generators.
How do I protect goods in the event of a power outage?
Absolutely. We offer compact Modular Room designs suited for limited spaces in commercial kitchens.
Do you offer installation services across all regions of Saudi Arabia?
Yes, our technical team covers all regions of the Kingdom for certified installation and maintenance services.
What does the term "Friga Bohn " mean?
It is a distinguished international brand in refrigeration evaporators. We work with their latest technologies to ensure high performance.
Why are Copeland compressors considered the best?
We provide detailed technical reports after each maintenance visit, outlining the condition of units and
faults that have been repaired.
How do I request a technical consultation for a new project?
They are distinguished by high reliability, spare parts availability, and their ability to withstand harsh operating conditions in the Saudi climate.
Do you provide original spare parts?
You can contact us via WhatsApp or visit our headquarters, and we will study your project requirements and provide an appropriate technical offer.
How is maintenance documented?
Yes, we are committed to supplying original spare parts that comply with international specifications to
ensure system continuity.
How do I choose the right capacity for my cold room?
Cold room capacity is determined by three key factors: the type of product and its temperature upon entry, the daily storage volume in kilograms or tons, and how frequently the door is opened. The correct calculation requires a Heat Load Study that accounts for Saudi Arabia's outdoor temperatures, which can exceed 45°C in summer.
Common mistake: choosing a smaller unit to save upfront costs will double your electricity bill and shorten the compressor's lifespan.
How much does it cost to build a cold room for a restaurant or warehouse?
The cost of building a cold room depends on four main factors: total floor area in square meters, thickness of the polyurethane (PU) insulation panels (100mm for refrigeration, 150mm for freezing), the type of refrigeration unit (Copeland, Bock, or equivalent), and the required operating temperature.
A restaurant cold room of 10–20 m² is entirely different in scope and cost from a 200 m² commercial warehouse. We provide a detailed quote after a site visit and precise requirements assessment.
Do cold rooms consume a lot of electricity? How can I reduce costs?
Electricity consumption depends on three areas: insulation efficiency (thinner panels = greater heat loss = compressor runs longer), compressor type (Inverter compressors save up to 30% compared to fixed-speed units), and operational discipline — minimizing door openings, maintaining condenser cleanliness, and regular defrost cycles.
In Saudi Arabia's climate, 150mm insulation for freezing and 100mm for refrigeration is the minimum standard to avoid excess energy consumption.
How long does cold room installation take?
Installation time varies by project size. Small cold rooms (up to 20 m²) typically take 3–5 working days. Large warehouse installations (over 100 m²) may require 2–4 weeks from design to commissioning. The process includes: engineering design, procurement of insulation panels and equipment, installation, electrical connections, refrigerant charging, and final operational testing.
Do you provide periodic maintenance after installation?
Yes. We offer periodic maintenance contracts covering: condenser and evaporator cleaning, refrigerant level and cycle pressure checks, compressor performance testing, door gasket inspection, and control panel diagnostics.
We recommend maintenance every 3 months as a minimum in Saudi Arabia's climate — dust buildup on condensers increases electricity consumption and accelerates compressor failure.
What is the difference between a standard cold room and a freezer room?
Refrigeration rooms operate between +1°C and +7°C and are used to store fresh produce, dairy, and beverages. Freezer rooms operate below -18°C and are used for meat, fish, and frozen goods.
The key technical differences: freezer rooms require thicker insulation (150mm vs. 100mm) and a more powerful, higher-cost refrigeration unit. Many facilities require both types within the same building.
[ Read our detailed article: Three Fatal Technical Errors in Cold & Freezer Rooms ]
Do you offer custom designs for small spaces?
Yes. We provide a warranty covering both equipment and workmanship. Copeland compressors carry the manufacturer's warranty, as do insulation panels and doors. The installation warranty covers any defects in connections or fittings resulting from the installation process. Contact our technical team for warranty details specific to your project.
Do you provide a warranty on equipment and installation?
Yes. We design Modular cold rooms starting from 4 m² — suitable for commercial kitchens, pharmacies, clinics, and small retail stores. Key advantages of modular design: fast installation, the ability to disassemble and relocate to another site, and future expansion by adding panels without full demolition or reconstruction.
How do I ensure the quality of room insulation?
Insulation quality is measured by three standards: panel thickness (100mm for refrigeration, 150mm for freezing in Saudi Arabia), foam density (minimum 40 kg/m³), and the tightness of panel joints to prevent thermal bridging.
Signs of poor insulation: condensation or rust forming on exterior surfaces, or the compressor running continuously without cycling off.
Can the room be expanded in the future?
Yes. We design cold rooms using a Modular panel system that allows future expansion — additional panels can be added to increase floor area without demolishing the existing structure.
The only requirement is that the original refrigeration unit is sized with sufficient spare capacity to handle the planned expansion.
We recommend informing us of your future expansion plans from the outset so we can size the unit accordingly from day one.
V. Technical Questions
Why do you use Copeland compressors in your projects?
Because Copeland compressors are the global standard for quality and reliability.
Why are BOCK units considered a strong choice in refrigeration?
BOCK units are extremely powerful German units that withstand the harshest operating conditions — ideal for large projects requiring continuous performance.
What is the importance of a control panel in a cold room?
The control panel is the "brain" of the room — it regulates temperature and protects the compressor from electrical fluctuations, extending the system's lifespan.
Do you supply evaporators from international brands?
Yes, we work with the best manufacturers worldwide.
[ Browse the Bohn Friga evaporator range on our products page ]
What type of refrigerant gas do you use?
We use environmentally approved, high-efficiency refrigerant gases that comply with Saudi Arabian standards.
Do you supply outdoor condensing units for warehouses?
Yes, we supply complete, powerful condensing units designed specifically for use in Saudi Arabia's outdoor climate.
What should I do if the room stops cooling?
First, check the power connection, then immediately contact our technical support team for rapid diagnosis and repair.
Do you provide original spare parts?
Yes, we are committed to providing original spare parts to ensure device efficiency and prevent recurring faults.
How is the refrigeration cycle designed for a warehouse?
We conduct an engineering study that considers the area, insulation type, and stored products to design
an optimal refrigeration cycle.
How do I request a technical consultation?
You can contact us via our Contact Us page and our specialist team will respond and meet your needs.
[ Contact Us page ]
Do you need help choosing the right cold room or freezer room?
The Hassounah Refrigeration team is available for technical consultation and to help you select the ideal product for your project.
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