Air Conditioners

Master, Trotec and Dantherm Portable Air Conditioners — What They Are and How They Work

A portable air conditioner (monobloc unit) is a compressor-based cooling device: the compressor pushes refrigerant through a condenser and an evaporator, and a fan draws air across it, lowering the temperature by several degrees or more. Heat and condensate exit through a hose about 150 mm in diameter, fitted into a window, door or container wall — no outdoor unit is needed, unlike split air conditioning. Setup takes minutes.

At NORWIT.PL we carry air conditioners primarily from Master Heaters, Trotec and Dantherm — compact portable models, such as the Master ACD 137, through to column and industrial units. Equipment is available on the brand pages Master Heaters, Trotec and Dantherm, while filters and hoses are in the air conditioner accessories category.

Types of Air Conditioners — Portable, Column and Industrial

Portable air conditioners fall into segments by cooling capacity and use, depending on room volume and duty cycle.

All three types share one trait: no outdoor unit. Filters and covers are in air conditioner accessories.

Air Conditioner vs. Evaporative Air Cooler — What's the Difference

At NORWIT.PL, "air conditioner" and "AC unit" describe the same compressor-based device covered above. A completely different product is the evaporative air cooler (swamp cooler): it has no compressor and cools by evaporating water, drawing only 100–300 W — it works well in a hall or on a terrace, not in a closed server room.

The NORWIT.PL air conditioner range consists of compressor-based units from Master Heaters, Trotec and Dantherm.

How to Size Cooling Capacity (kW) for a Hall, Container or Server Room

Cooling capacity is given in kW or BTU/h (1 kW is roughly 3,412 BTU/h). Requirements depend on room volume — in a server room, the electronics themselves are an added heat source.

It's worth adding a margin of roughly 15–20% for peak heat. Exact cooling capacity per model is listed on the product page.

Portable Air Conditioners on Site and in Halls — Continuous Duty and Running Costs

Professional air conditioners from Master Heaters, Trotec and Dantherm are engineered for continuous 24-hour operation — unlike domestic models, limited to a few hours at a time with breaks. In a server room or a container with electronics, cooling has to run without interruption.

Running cost depends on electrical power draw, typically roughly 0.7–5 kW. Energy efficiency (EER) runs 2.6–3.2, lower than split systems (3.5+). The filter is worth cleaning about every 2 weeks — clogged, it can cut cooling performance by as much as 10–20%. Filters, hoses and covers are in air conditioner accessories.

Frequently Asked Questions About Portable Air Conditioners

Why Buy a Portable Air Conditioner at NORWIT.PL

We focus on professional cooling: our range carries air conditioners primarily from Master Heaters, Trotec and Dantherm — equipment built for continuous duty, not domestic units. Filters, hoses and covers are in air conditioner accessories, and the range is rounded out by heating and cooling. Orders are fulfilled online, with nationwide delivery.