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Bosch
Climate 3000i
The Bosch Climate 3000i 3.5 kW is a white wall-mounted air conditioner with the CL3000iU W 35 E indoor unit, an anti-frost mode and the i-Clean function, and it heats at outdoor temperatures down to -15°C.
- White
- Heating function
- Cooling capacity
- 3.5kW
- Indoor unit noise
- from21dB(A)
- Heats in outdoor frost
- down to−15°C
Price incl. installation
Price on request
What installation includes
- Installation of the indoor and outdoor unit
- Up to a few metres of refrigerant, electrical and condensate routing
- Wall penetration and neat routing of the installation
- Carrying out the vacuum and checking the system for tightness
- Charging with refrigerant and starting the unit up
- Checking the operating parameters and configuring the controls
- Operating instruction and handover of the warranty documents
The Bosch Climate 3000i in its 3.5 kW version is a set made up of the CL3000iU W 35 E indoor unit and the CL3000i 35 E outdoor unit. Bosch places the series in the segment of wall-mounted units with a sensible balance of quality and price rather than among heavily equipped flagships. The specification shows it: the catalogue gives a nominal 3.5 kW for cooling and 3.8 kW for heating, but it does not list minimum or maximum output, so we will not pretend to know the modulation range. What we do know is the operating window outdoors: from -15 to 50°C in cooling and from -15 to 24°C in heating. For a Warsaw customer this means a clear split: the model suits someone who chooses by the basic numbers and simple operation, not by a long list of extras.
Seasonal efficiency is SEER 7.0 in class A++ for cooling and SCOP 4.2 in class A+ for heating. These are solid, honest values for a flat where the unit works mainly in summer and tops up the heat in spring and autumn. The sound pressure level of the indoor unit runs from 21 to 37 dB, and the outdoor unit is rated at 55 dB. The indoor unit weighs 8.7 kg and measures 802 x 200 x 295 mm (width, depth, height), so it is clearly shallow. The refrigerant is R32 and the maximum installation length between the units is 25 m.
In terms of features the Climate 3000i covers cooling, heating, an anti-frost mode, corrosion protection and the i-Clean function, which heats the evaporator to 56°C. It is operated with an infrared remote, and control from a phone through the HomeCom Easy app requires a separate Bosch network gateway sold as an accessory. This text relies only on manufacturer data. Whether the set suits your flat is something we judge during a free assessment, and we quote the installed price after a free assessment.
Overview and positioning
The Climate 3000i is a Bosch wall-mounted series offered in four outputs, from 2.6 kW to 7 kW. The 3.5 kW version is the second from the bottom and matches a bedroom, a smaller living room or a daytime room in a new block. The manufacturer describes the whole family as units with a good price-to-quality ratio, a universal look and a full set of basic functions. We translate that into practice: you get an air conditioner that does what it is supposed to do, without add-ons that raise the demands on the installation.
It is worth stating at once what this series is not. The catalogue data contains no minimum or maximum output, no description of an occupancy sensor, no airflow direction logic and no built-in network module. If someone is looking for a unit packed with extras, they should browse other positions in the catalogue. If the goal is to buy a straightforward machine from a well-known maker without paying for elaborate functions, the Climate 3000i is a reasonable candidate. That clarity helps you to judge whether what it offers covers your needs: cooling for summer, top-up heating outside the season and quiet running at night, with no ambition to be the centre of a smart home.
In Warsaw a unit like this most often goes into flats on the secondary market and into new apartments where the owner wants to solve summer heat in one or two rooms. With more rooms it is better to price several separate sets than to look for a single solution, because then each room gets an output matched to its volume and sun exposure. A good starting point is a conversation about how many hours a day the unit will run and which room has the biggest heat gain from the sun.
Cooling and heating technology
The nominal cooling output is 3.5 kW and the heating output is 3.8 kW. Cooling efficiency is described by SEER 7.0, which on the European scale means class A++. In heating the SCOP is 4.2 and the class is A+. This is therefore not a unit with the highest ratings, but the difference between it and class A+++ models concerns mainly the yearly energy bill, not comfort in the room. For a flat where the air conditioner runs a few hundred hours per season, that is a bill to calculate calmly rather than a reason to give up. The lack of a published minimum output means we do not describe how smoothly it runs at low load; instead we stick to the numbers the manufacturer actually published: nominal values, classes and temperature ranges.
The most interesting figure in this set is the heating range: from -15 to 24°C outdoor temperature. In cooling the unit works between -15 and 50°C. The upper heating limit of 24°C matters on warm spring days, when it is already mild outside but the interior still needs a little warmth in the evening. The lower limit of -15°C means the unit can operate through Warsaw frosts, but its heating output in hard frost will be lower than nominal, so we do not treat it as the only heat source in a home.
The manufacturer also lists an anti-frost mode. According to the description it protects the room from cooling down too far. For the owner of a summer cottage or an empty flat in winter this is a practical option, but the exact parameters would need checking in the manual because the catalogue does not give them. We therefore demonstrate its behaviour on site only after reading the manual supplied with the set. The refrigerant is R32 and the pipework between the units can be up to 25 m.
Comfort and air quality
Comfort in this model is decided mainly by noise and hygiene. The sound pressure of the indoor unit lies between 21 and 37 dB, depending on fan speed. The lowest value applies to quiet operation and is the one that counts in a bedroom when the unit runs all night. For the outdoor unit the manufacturer gives 55 dB, so when choosing a place on a balcony or facade you have to think about neighbours and about your own window facing the courtyard. In practice the difference between quiet mode and the higher speeds is clear, which is why at commissioning we show how to set the fan for the night and how to pick a faster speed for cooling a hot room after you get back from work.
Indoor hygiene is supported by the i-Clean function. According to the manufacturer it heats the evaporator to 56°C to limit the growth of bacteria, and clean air then reaches the room. The description says nothing about a high-grade filter or ionisation, so we do not attribute such solutions to the model. Remember also that i-Clean does not excuse you from cleaning the mesh filters: dust still settles on them at a pace that depends on the flat, on pets and on renovations in the building. For allergy sufferers regularity matters more than any single function: cleaning the filters every few weeks in the busy season and checking the heat exchanger during the yearly service.
On top of this comes corrosion protection, which Bosch gives as the reason for long service life. That is a safeguard for the material, not a cleaning function. The manufacturer adds that the Climate 3000i is particularly quiet, and although we prefer to rely on numbers, 21 dB in quiet mode does fall within the range typical of wall units meant for bedrooms.
Controls and Wi-Fi
The basic way to operate the unit is an infrared controller, that is, the remote supplied with the device. The manufacturer describes it as a way to quickly choose cooling or heating. The remote handles the main modes, the temperature setpoint and fan speed, and its advantage is that it does not depend on the home network. For older family members and for tenants this is often the best option. At the same time the remote has a limitation: it works only within range of the indoor unit, so switching on before you come home requires the gateway and the app.
Control from a phone is possible, but it is not part of the base set. The HomeCom Easy app requires a Bosch network gateway, which the manufacturer calls additional equipment. That means a separate purchase and setup, so when ordering the set it is worth deciding straight away whether the app will be used. We do not claim that a Wi-Fi module is built in or supplied with the air conditioner, because the manufacturer's description says the opposite.
During commissioning we check that the remote works, set the basic operating modes with the customer and show how to use heating and the i-Clean function. If the network gateway has been ordered, we help with the first connection to the app. If not, the unit still fully does its job, and the gateway can be added later without touching the refrigerant installation.
Design and build
The CL3000iU W 35 E indoor unit is white and measures 802 x 200 x 295 mm (width, depth, height). A depth of 200 mm is its strongest visual argument: the body protrudes little from the wall, so in a narrow room or above a door it does not dominate the interior. At 8.7 kg it is light for a 3.5 kW air conditioner, which eases fitting the bracket on plasterboard walls, provided there is proper reinforcement behind the board. With such a low, wide shape it is also easier to choose a spot above a sofa or a bed so that the airflow does not point straight at seated people.
The manufacturer speaks of a universal design and high build quality. There are no bold shapes or changeable panels here, and the series comes only in white. That goes well with light walls and the typical finish of Polish flats. Whoever wants a black or wooden casing should look at other brands in the catalogue. The advantage of this approach is predictability: you know what you are buying, and the look of the unit does not change with the finish variant.
The CL3000i 35 E outdoor unit works with R32 refrigerant and has a sound pressure of 55 dB. When choosing its position we look at service access, condensate drainage and the housing community's consent to changing the facade. An installation length of up to 25 m is a large margin, but each extra metre of route is a cost we discuss with the customer before work starts.
Installation and service
We start by agreeing the position of both units during the free assessment. Then we mount the indoor and outdoor units, run the refrigerant, electrical and condensate lines over a stretch of up to a few metres, make the wall penetration and lay the installation so that it looks tidy. The next stages are evacuating the system and checking its tightness, charging it with refrigerant and starting up the device.
At the end we check the operating parameters, configure the controls, explain how to use the unit and hand over the warranty documents. We discuss possible surcharges before work begins: a longer route, drilling through concrete or reinforced concrete, chasing channels in the wall, a condensate pump or work from a lift platform. The maximum installation length of this set is 25 m. We quote the installed price after a free assessment.
After installation two things matter most: regular cleaning of the filters in the indoor unit and a yearly service with a tightness check and a check that the condensate drain is clear. The i-Clean function helps keep the evaporator in good condition, but it does not replace the service. We recommend scheduling it before the cooling season. With intensive use, for example in a study with computers, it is worth servicing both before the heating season and before the summer.
Who this model is for — summary
The Bosch Climate 3000i 3.5 kW is for a customer who wants a simple, proven wall unit without costly extras. Its strongest points are the shallow white indoor unit with a depth of 200 mm, heating at outdoor temperatures down to -15°C, the anti-frost mode and the i-Clean function that heats the evaporator to 56°C. Control with the remote is enough in most flats, and the app can be added with a network gateway. For people who value simplicity and low demands on the installation, it is one of the more sensible choices in our catalogue.
It suits less those who expect class A+++, information about the modulation range or built-in Wi-Fi. An outdoor unit at 55 dB also needs a sensible location. In a bedroom facing a noisy courtyard or in a very small room another configuration is worth considering.
Do you want to check whether this set makes sense in your flat? Book a free assessment. We will measure the route, point out a place for the outdoor unit and tell you whether the scope of work fits a standard installation. We quote the installed price after a free assessment.
Technical data
Specifications
| Model (indoor / outdoor unit) | CL3000iU W 35 E / CL3000i 35 E |
|---|---|
| Cooling capacity (nom.) | 3.5 kW |
| Heating capacity (nom.) | 3.8 kW |
| SEER (cooling) | 7.0 — class A++ |
| SCOP (heating) | 4.2 — class A+ |
| Refrigerant | R32 |
| Noise level (indoor, min.–max.) | 21–37 dB(A) |
| Noise level (outdoor) | 55 dB(A) |
| Indoor unit dimensions (W/D/H) | 802/200/295 mm |
| Indoor unit weight | 8.7 kg |
| Operating range (cooling, outdoor) | -15°C to +50°C |
| Operating range (heating, outdoor) | -15°C to +24°C |
| Max. pipe length | 25 m |
Questions
Frequently asked questions
Does the Bosch Climate 3000i 3.5 kW heat in frost?
The manufacturer gives a heating operating range of -15 to 24°C outdoor temperature, and the nominal heating output is 3.8 kW at SCOP 4.2. Output drops in hard frost, so we treat it as supplementary heating, not the only heat source.
How loud is this model?
The indoor unit has a sound pressure of 21 to 37 dB depending on fan speed, and the outdoor unit 55 dB. When choosing the outdoor position it is worth considering the nearest windows.
Can I control the air conditioner from a phone?
Yes, but only after buying a Bosch network gateway as additional equipment, because the HomeCom Easy app requires it. The basic set works with an infrared remote.
What are the dimensions and the maximum installation length?
The indoor unit measures 802 x 200 x 295 mm (width, depth, height) and weighs 8.7 kg. The maximum installation length is 25 m, and we set the scope of installation during a free assessment.
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