Air conditioner in winter: to warm up or not to warm up

7 December 2020

Air conditioning in winter: we bask in the cold

“Air conditioners can only work well in summer, cooling the air in the room.” This point of view, deeply ingrained in the minds of split-system owners, has long ceased to be true. Sensei experts offer economical and efficient options for heating rooms using climate technology. Let’s discuss together what types of hardware fit the task, how they work, and their pros and cons.

How does this work?

To begin with, we will understand the principles of operation of a conventional air conditioner.

A fact that has already ceased to shock the average user: household models do not produce heat or cold, but transfer them from one environment to another. Thermal energy is redirected from one end of the system to the other. In the case of cooling mode, it looks like this: the cold condenser in the indoor unit is cooled down by the air flow, and the excess heat is removed through the evaporator (the heat exchanger of the outdoor part of the split system).

In heating mode, everything happens the other way around. A special valve changes the direction of the refrigerant flow, so that the external and internal units exchange functions. Heat begins to come in from the street, not out.

Here there is a logical discrepancy: where will the heat from outside come from if the temperature outside the building falls to -20oC and lower? The fact is that even refrigerated substances retain their thermal potential. For an example: the air conditioner cools the intake air with a temperature of 5oC before 15oC, and takes the difference for heating.

Inverter split system: output for the domestic and commercial segment

Inverter models, in contrast to conventional ones, are able to work for heating at values up to -20oC. And these are only budget and medium-cost options! Designed for installation in countries with harsh climates, the devices are able to maintain a comfortable microclimate in a house, apartment or any other room at -20oC and lower.

The range of our company presents a line of air conditioners of the Elegant Inverter PRO series. Climate control equipment combines a stylish design, high arbitrariness, affordable price and economy. It is this technique that perfectly copes with the task of warming the room even at -20 oC. air Conditioners have a maximum energy efficiency factor of A+++ and a minimum noise level (up to 19 dB). Due to the presence of a plasma ion generator, the air is saturated with active nutrients, and dust, bacteria and viruses are deactivated. The presence of a Wi-Fi module allows the owner to control climate technology remotely. At any time of the year, Elegant Inverter PRO is the perfect solution in all respects.

Another line of air conditioners is the Nordic Inverter PRO series. The efficiency of the equipment is increased due to the double heat exchanger of the external unit. Climate control equipment of this line has a wide range of options. Air conditioners can heat the room at a temperature of -25 oC outside the window. The Nordic Inverter PRO split systems have a night mode, thanks to which a comfortable microclimate is maintained even during sleep. During operation, the vibration and noise levels are minimal (up to 19 dB). Despite a wide range of functions, climate devices are economical (cold A+++/ heat A++).

Advantages of using inverter air conditioners and their disadvantages

How is an inverter system better than electric heaters? In terms of efficiency, it surpasses all traditional mobile types of heaters powered by electricity. The phenomenon is explained simply: oil, convector, infrared analogues are physically unable to produce more than 1 kW of heat at the consumption of 1 kW of electricity, since their work is based on energy conversion.

Inverter air conditioning systems do not involve conversion – they simply transfer energy, without spending resources on transformation. The technology has a high energy efficiency coefficient – up to 5 points. That is You pay for one kilowatt of electricity and get five kilowatts of heat in return.

Let’s get acquainted with the weaknesses of inverter air conditioners to have a full understanding of them. So:

  • Cost. You will have to spend 20-40% more than on a classic device.
  • High requirements to the quality of installation work. It will require the involvement of highly skilled labor.
  • Weak tolerance of power surges. It is important to ensure the stability of the current.
  • Expensive electronics, repair and replacement of which will cost a lot of money.
  • A massive external block. If the load-bearing wall is weak or dilapidated, additional fasteners and amplifiers may be required.

Can a conventional air conditioner be used as a heater?

The temperature limit of operation for heating is specified for each model separately. For conventional split systems, the indicator is-5-7oC.

If the window thermometer shows values below those specified in the device’s instructions, then operation in heating mode becomes unsafe. Sensors built into modern devices will not allow an unwanted launch to take place.

Sensei experts do not recommend risking the functionality of the equipment and use it only in early autumn or mild spring, when the Central heating has not yet been started.

Turning on the heating on a conventional split system in severe frost will result in:

  • Reduce productivity. You will not feel a special influx of heat, but the energy efficiency coefficient will fall.
  • Overloading of the compressor, its wear and failure. The oil in the refrigeration circuit will lose its fluidity, become viscous and will not give the mechanism sufficient lubricating ability. Buying a new compressor will cost 50-60% of the cost of a new air conditioner.
  • De-icing of the drainage pan and heat exchanger of the outdoor unit.

For your information! If the “winter kit” is installed (a set of add-ons that work for heating the structure), the ability to work for cooling remains. This is a valuable opportunity to equip premises with specific tasks (server rooms, computer centers).

Warranty registration

  • Product registration
  • Warranty guide
Product registration

Thank you for choosing our shop and for your purchase! Here you can register the purchased climate control equipment to receive a 5-year warranty.

Attention! You can find most of the information required for registration on the product packaging.

  • If you cannot fill out the registration form completely, then the official warranty is provided for two years subject to a correctly completed warranty card (attached to the sales receipt during the purchase).
  • You can get a warranty for 5 years, provided that the product is installed by an authorized technician with a personal certificate. You can verify validity of the certificate on the page.

Important! Please note! A prerequisite for the warranty is an annual maintenance performed under a contract concluded by and between you and the technician. Each maintenance performed is recorded in the contract.

Warranty guide

We guarantee quality and good performance of our equipment, and absence of defects, subject to observation of the rules of operation and regular maintenance. The warranty takes effect on the day of the product sale, as indicated on the sales receipt. During the warranty period, we deliver all necessary components to the buyer and carry out any repair work if the equipment failure is the manufacturer’s fault. This fact should be confirmed by the official service department.

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Warranty card

Types of official guarantee

2 years

Official Manufacturer Warranty

When you purchase a product from an authorized Sensei dealer, you can get a 2-year warranty. An important condition for setting the warranty period is the correct completion of the warranty card and issue of a sales receipt. A 2-year warranty applies to the products:

  • Household/semi-industrial/industrial air conditioners
  • Multisplit systems
  • Heat pumps

5 years

Extended Manufacturer Warranty

A prerequisite for an extended warranty for a product purchased from an authorized Sensei dealer is the correct completion of the warranty card, conclusion of an agreement with an authorized installer, issue a sales receipt and registration on the website. You can get an extended warranty for a period of 5 years for all types of products:

  • Household/semi-industrial/industrial air conditioners
  • Multisplit systems
  • Heat pumps