Rooftop Unit (RTU)

Rooftop units (RTU) provide heating and cooling for residential and commercial buildings, such as hotels, industrial places, meeting halls, etc. In the following, we discuss the method of calculating the capacity, brands, best prices, and important points for buying all kinds of rooftop HVAC units.

Rooftop Unit (RTU) Expert Buying Guide and Price List

A rooftop package unit essentially consists of an air-cooled chiller combined with an air handling unit equipped with a DX cooling coil, through which refrigerant flows directly. The rooftop package unit is installed as a standalone system on the building’s roof and can be used in areas with large surface area and volume that require uniform temperature.
The rooftop package unit includes two separate coils: one for cooling and one for heating. In the cooling process, air is circulated by a fan and cooled as it passes over the DX coil. This cooled air is then distributed throughout the building via ductwork.
Heating in a rooftop package unit is usually provided through hot water supplied by the boiler in the central mechanical room. However, if there is no central heating system or mechanical room, it is also possible to install an electric heater or a separate heating coil upon the client's or project engineer’s request. The rooftop package unit can be installed on the roof, occupying no usable interior floor space of the building.

The rooftop package has an independent function as a cooling and heating device. In rooftop HVAC units, you do not need another device.

In this device, the process of controlling the ambient temperature in the system is done by thermostats that can be installed in the environment or the air return vent and issued the command to stop or start the operation of the device's engine.

The rooftop unit, like the air handling unit (AHU), consists of three channels: outgoing air, return air, and fresh ambient air.

The Scroll Compressor of the Rooftop unit is 10% lighter and 30% less bulky than normal reciprocating compressors. Rooftop packages do not use valuable space inside the house. Most of these systems have a multi-zone arrangement, which means that they can have several areas under control. Of course, in many cases, rooftop units also have heaters to provide heating.

To estimate the required cooling and heating capacity of the rooftop package unit based on:

• Climatic conditions of the project site
• Dimensions and usable floor area of the building
• Required air volume for cooling and heating supply
• Project usage type and HVAC system diversity factor
• Calculation of cooling and heating loads, and the heat transfer coefficient of wall and window surfaces
• Rate of fresh air infiltration (air change) per hour,
• and so on,

must be carried out based on precise engineering calculations.

Note: As a general rule, to make a preliminary estimate of the cooling capacity required for a rooftop package unit in climatic conditions similar to cities such as Tehran, Masqat, Erbil, Dubai, Shiraz, Kermanshah, Sulaymaniyah, Erbil, etc., one can assume approximately 4 tons of refrigeration for every 100 square meters of usable floor area of the project.

Features of the Rooftop Units

Other features of rooftop package devices include the following:

• Long lifespan and no need for boiler room facilities
• No need for extensive plumbing in the building
• Easy installation and operation of the rooftop package unit in the project
• No need for circulation pumps and cooling towers
• Ability to control via room and duct thermostats
• Ability to install various PLC control circuits according to project conditions and client requests

DamaTajhiz: Thousands of products for thousands of projects (since 2004)

Buying Rooftop Units (RTUs) 

The first step to buying a rooftop unit is to pay attention to the cooling and heating capacity of the installation location.

Because, rooftop units are produced and supplied in different types with different cooling, heating, and ventilation capacities, you should consider the size and use of your desired environment before purchasing so that you can choose correctly and get the correct model and ventilation capacity for the rooftop unit at a reasonable price.

Then things like energy consumption, features, brand, and advantages of the packaged rooftop unit should be examined.

Here at the DamaTajhiz HVAC store, technical information on dozens of models of rooftop units, from all kinds of reliable brands with original warranties, has been presented for you, dear ones, to enjoy the good feeling of optimal and smart shopping.

DamaTajhiz; Guide to Selection and Pricing of HVAC and Building Facilities Equipment (Since 2004)

Rooftop Unit (RTU) Price

The price of various types of rooftop units is different based on capacity and brand. It should be noted that all the ducted/ductless split air conditioners presented on the website of the DamaTajhiz specialized collection have a product ID and a suitable price, and the discounts desired by consumers have been included in these prices.

Order Rooftop Unit (RTU)

In the rooftop package unit category of the DamaTajhiz specialized group—the first (since 2004) and most visited professional reference for cooling and heating equipment in the Middle East (according to global statistics from Alexa.com)—you can easily choose your desired product at the most competitive price (guaranteed best prices), with full confidence in receiving genuine warranty and after-sales services, by taking a little time to read the comprehensive and concise descriptions provided.

It should be noted that all the rooftop units offered on the website of DamaTajhiz HVAC Group have reasonable prices and the discounts desired by consumers have been included in these prices.

If, after reading the above information, you have more questions to decide on the purchase of rooftop units, you can consult with the air conditioning equipment sales experts after calling DamaTajhiz HVAC Group and extension numbers 117-119-120-126-317 Take and ask your questions.

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