The Right
Vaillant Heat Pump
For Your Home, Together
We install Vaillant air, ground and water source heat pump systems. The right model is determined through a free site survey based on your home’s heat loss, usage habits and budget.
A+++ energy class — across all Vaillant heat pump series
Flow water temperature up to 75°C (aroTHERM plus)
Outdoor units resistant to coastal corrosion
Remote control with the myVAILLANT app
A+++
Energy Efficiency Class
6 series
Air / Ground / Water Source
R290
Natural Refrigerant (GWP=3)
Which Model Is Right for You?
Select the card closest to your situation. A free site survey is required for the final decision.
Initial recommendation based on your situation:
Underfloor heating or
radiator system
radiator system
aroTHERM plus Monoblock
↓ Go to model
Quiet operation priority
coastal area
coastal area
aroTHERM Split plus
↓ Go to model
Limited space —
integrated tank
integrated tank
aroTHERM pure Split
↓ Go to model
Budget-focused
entry-level project
entry-level project
aroTHERM Split intro
↓ Go to model
Large residential / commercial
ground-water-air source
ground-water-air source
flexoTHERM exclusive
↓ Go to model
I am not sure
I want a survey
I want a survey
Free Initial Analysis
↓ Get a quote
Why Do We Install Vaillant?
We install multiple brands. Here are the reasons we often recommend Vaillant:
A+++ — Across All Series
A+++ energy class in both air source and ground/water source models.
75°C Flow Water Temperature
The aroTHERM plus series supports up to 75°C. In older radiator systems, radiator replacement is usually not required.
Resistant to Coastal Corrosion
All air source models have high resistance to corrosion that may occur along coastal areas.
Wide Capacity Range
Multiple series from 4 kW to 19 kW. A suitable model can be found from small apartments to large commercial projects.
Cascade Capability
Larger projects can be handled with one brand solution by combining multiple units.
Extensive Service Network
Strong service and spare parts access in Poland, Germany, Austria and Slovakia.
Air Source — 3 Most Preferred Models
The air source models most frequently preferred in our installations. See the button below for other models.
Most Preferred
aroTHERM plus Monoblock
Monoblock · Air Source · R290
Key Features
5 capacity options — DC inverter
Flow water temperature up to 75°C
R290 natural refrigerant (GWP=3)
Cascade capability — resistant to coastal corrosion
5 kW7 kW9 kW12 kW15 kW
Is this model right for me? →
aroTHERM Split plus
Split · Air Source · Premium
Key Features
3 capacity options — super quiet
Built-in magnetic filter
High resistance to coastal corrosion
myVAILLANT remote control
5 kW8 kW12 kW
Is this model right for me? →
aroTHERM pure Split
Split · Air Source · Compact
Key Features
3 capacity options
Integrated tank up to 250 L
Cascade capability available
Built-in backup heater option
4 kW6 kW8 kW
Is this model right for me? →
aroTHERM Split intro
Split · Air Source · Entry Series
Key Features
4 capacity options — DC inverter
Cascade capability available
Model option with built-in backup heater
Compact and lightweight units
4 kW6 kW8 kW10 kW
Is this model right for me? →
aroTHERM Split
Split · Air Source · Standard
Key Features
2 capacity options — DC inverter
Cascade capability — built-in backup heater
High resistance to coastal corrosion
Easy installation and mounting
6 kW10 kW
Is this model right for me? →
flexoTHERM exclusive
Multi · Ground / Water / Air Source
Key Features
5 capacity options (5–19 kW)
Ground, water and air heat sources
Built-in Wi-Fi — myVAILLANT
flexoCOMPACT exclusive tank option
5 kW8 kW11 kW15 kW19 kW
Is this model right for me? →
How Does a Heat Pump Work?
Basic principle: using little electricity to convert energy from nature into heat.
%75
Energy Taken from Nature
With an average of 25% electrical energy and 75% energy from nature, 100% heating energy can be produced. Actual values vary depending on conditions.
3–5
COP Value Range
Under favorable conditions, 3–5 kWh of heat can be produced with 1 kWh of electricity. It varies depending on outdoor temperature and installation.
Summer + Winter
Heating and Cooling
Provides heating and hot water comfort throughout the year. Split models can also provide cooling in summer.
Will It Work With Your Existing System?
Vaillant heat pumps are designed to be compatible with most existing heating infrastructure.
Underfloor Heating
The most efficient combination
High COP at low water temperature
Old Radiators
aroTHERM plus up to 75°C
Radiator replacement may not be required
Tank & Hot Water
Hot water support 365 days a year
Separate or integrated tank
Solar Panel
PV panel integration
myVAILLANT compatible
Heat Pump vs Gas Boiler
A general comparison.
| Feature | Gas Boiler | Vaillant Heat Pump |
|---|---|---|
| Fuel dependency | ✗ Depends on gas prices | ✓ Electricity + natural source |
| Summer cooling | ✗ None | ✓ Available in split models |
| Energy efficiency | ~90% (combustion efficiency) | COP 3–5 (condition-dependent) |
| Remote control | Limited | ✓ myVAILLANT app |
| Initial investment cost | Low | Medium–High |
| EU subsidy programs | ✗ None | ✓ Available in PL, DE, AT, SK |
Real Projects
Our Latest References
VAILLANT AROTHERM PLUS
FULDA · 2-storey apartment building · 327 m²
Vaillant aroTHERM Plus 12,2 kW
Complete System Installation
Complete System Installation
BeforeGas boiler — high energy cost
→
AfterVaillant aroTHERM Plus 12,2 kW
8 days
Installation time
%38
Estimated energy savings
12.2 kW
System capacity
2 years
Workmanship warranty
* Estimated values. May vary depending on usage and building.
HYDRATERM Guarantee
F-Gas Cat. I certified installation
Capacity calculation
Installation & commissioning
2-year workmanship warranty
Technical support
Free Initial Analysis
Get the Right Model and
Capacity Quote
Share the size of your home and your existing system. We will get back to you within 24 hours. We provide service in Poland, Germany, Austria and Slovakia.
Monoblock · Air Source · R290
aroTHERM plus
Monoblock
Monoblock design with all components in a single outdoor unit. Suitable for existing radiator and underfloor heating systems with flow water temperature up to 75°C.
A+++ Energy Class
75°C Flow Water
5 Capacity Options
R290 Natural Refrigerant (GWP=3)
Cascade Capability
Resistant to Coastal Corrosion
Photos
Real Installation Images
Features
aroTHERM plus Monoblock — What Does It Offer?
75°C — Radiator Compatibility
Produces flow water up to 75°C. Whether existing radiators have sufficient capacity is determined by a heat loss calculation.
Single Outdoor Unit
Does not require an indoor unit. Saves technical space.
R290 Natural Refrigerant
Propane with GWP = 3. Compliant with EU F-Gas regulations.
myVAILLANT Compatible
Remote temperature setting, weekly schedule, energy monitoring and holiday mode.
Cascade Capability
Capacity can be increased for larger projects by combining multiple units.
Resistant to Coastal Corrosion
High resistance to corrosion that may occur in coastal areas.
Technical Data
Model Features (from Vaillant Catalog)
| Feature | Value / Information |
|---|---|
| Type | Monoblock air source heat pump |
| Capacity options | 5 kW, 7 kW, 9 kW, 12 kW, 15 kW |
| Energy class | A+++ |
| Compressor type | DC inverter |
| Max. flow water temperature | 75°C |
| Refrigerant | R290 (Propane) — GWP: 3 |
| Cascade capability | Available |
| Coastal corrosion resistance | Available |
| myVAILLANT compatibility | Yes |
| Subsidy eligibility | Suitable for PL, DE, AT, SK programs |
* Based on official Vaillant sources. Please check the Vaillant catalog for exact data.
Application Areas
Who Is This Model Suitable For?
✓ Suitable
Homes and villas with underfloor heating
Conversion projects from old gas boilers
Existing radiator systems (heat loss calculation required)
Projects with limited indoor technical space
Points to Consider
Radiator capacity must be checked during the site survey
A heat loss calculation is required for the correct capacity
Frequently Asked Questions
Questions You May Have
Do I need to replace my radiators?
aroTHERM plus Monoblock produces flow water up to 75°C. Whether existing radiators have sufficient capacity is determined by a heat loss calculation. In some cases replacement is not required, in others it may be. This analysis is performed during our free site survey.
How is the correct capacity determined?
A heat loss calculation must be performed according to EN 12831. The building’s insulation condition, size and climate zone are decisive. We perform this calculation during our free site survey.
Is R290 refrigerant safe?
R290 is a natural refrigerant (propane) with a GWP value of only 3. It is fully compliant with EU regulations. Installation must be performed by an F-Gas certified technician.
Free Initial Analysis
Get a Quote for aroTHERM plus Monoblock
Share the size of your home and your existing system; we will prepare a capacity and cost recommendation.
Split · Air Source · Premium
aroTHERM
Split plus
Split design with a compressor in the outdoor unit and a condenser and high-efficiency pump in the indoor unit. Stands out with super quiet operation and a built-in magnetic filter.
A+++ Energy Class
Super Quiet
3 Capacity Options
Built-in Magnetic Filter
Resistant to Coastal Corrosion
Features
aroTHERM Split plus — What Does It Offer?
Super Quiet Operation
Low sound pressure at a distance of 3 meters from the outdoor unit in quiet mode. Suitable for dense residential areas.
Built-in Magnetic Filter
Captures particles in the system and preserves long-term performance. No additional accessory required.
High Resistance to Coastal Corrosion
Can also be used in coastal and seaside locations.
myVAILLANT Remote Control
Temperature schedule, holiday mode and energy monitoring can be managed from a phone.
DC Inverter Compressor
Improves energy efficiency by modulating according to load demand.
Easy Installation
Integration with existing systems is possible.
Technical Data
Model Features
| Feature | Value / Information |
|---|---|
| Type | Split air source heat pump |
| Capacity options | 3 different capacities |
| Energy class | A+++ |
| Special features | Super quiet, built-in magnetic filter |
| Coastal corrosion resistance | Available |
| myVAILLANT compatibility | Yes |
* Based on official Vaillant sources.
Free Initial Analysis
Get a Quote for aroTHERM Split plus
Share your project details; we will prepare a capacity and cost recommendation.
Split · Air Source · Integrated Tank
aroTHERM
pure Split
Compact indoor unit with an integrated tank up to 250 liters. A split model designed for limited technical spaces with cascade connection capability.
A+++ Energy Class
250 L Integrated Tank
3 Capacity Options
Cascade Capability
Resistant to Coastal Corrosion
Features
aroTHERM pure Split — What Does It Offer?
250 L Integrated Tank
Heating and hot water are solved in one unit. No separate tank is required.
Built-in Backup Heater Option
A model option is available that activates in case of high heat demand.
Cascade Capability
Capacity can be increased by combining multiple units.
Resistant to Coastal Corrosion
Can also be used in seaside and coastal homes.
myVAILLANT Remote Control
Temperature schedule, tank heating time and energy monitoring can be managed from a phone.
Easy Installation
Compact and lightweight units make installation easier.
Technical Data
Model Features
| Feature | Value / Information |
|---|---|
| Type | Split air source heat pump |
| Capacity options | 3 different capacities |
| Energy class | A+++ |
| Integrated tank | Up to 250 liters |
| Built-in backup heater | Available as a model option |
| Cascade capability | Available |
| Coastal corrosion resistance | Available |
| myVAILLANT compatibility | Yes |
* Based on official Vaillant sources.
Free Initial Analysis
Get a Quote for aroTHERM pure Split
Share the details of your apartment or home.
Split · Air Source · Entry Series
aroTHERM
Split intro
Entry series for those who want to switch to a heat pump with a more affordable budget. Equipped with a DC inverter compressor, cascade capability and backup heater option.
A+++ Energy Class
4 Capacity Options
DC Inverter Compressor
Cascade Capability
Backup Heater Option
Features
aroTHERM Split intro — What Does It Offer?
A+++ at an Entry-Series Price
Although more affordable, it retains the A+++ energy efficiency class.
DC Inverter Compressor
Optimizes energy consumption according to load demand.
Cascade Capability
Larger projects can be covered by combining two units.
Built-in Backup Heater Option
Model option that activates in case of high heat demand.
Compact and Lightweight
Can also be easily applied in narrow spaces.
myVAILLANT Remote Control
Temperature schedule, holiday mode and energy monitoring.
Technical Data
Model Features
| Feature | Value / Information |
|---|---|
| Type | Split air source heat pump |
| Capacity options | 4 different capacities |
| Energy class | A+++ |
| Compressor type | DC inverter |
| Built-in backup heater | Available as a model option |
| Cascade capability | Available |
| myVAILLANT compatibility | Yes |
* Based on official Vaillant sources.
Free Initial Analysis
Get a Quote for aroTHERM Split intro
Let’s evaluate the solution suitable for your budget and project together.
Split · Air Source · Standard
aroTHERM
Split
Standard split model offering high efficiency with a DC inverter compressor, performance support with a built-in backup heater and a structure resistant to coastal corrosion.
A+++ Energy Class
DC Inverter
2 Capacity Options
Cascade Capability
Resistant to Coastal Corrosion
Technical Data
Model Features
| Feature | Value / Information |
|---|---|
| Type | Split air source heat pump |
| Capacity options | 2 different capacities |
| Energy class | A+++ |
| Compressor type | DC inverter |
| Built-in backup heater | Available |
| Cascade capability | Available |
| Coastal corrosion resistance | Available |
| myVAILLANT compatibility | Yes |
* Based on official Vaillant sources.
Free Initial Analysis
Get a Quote for aroTHERM Split
Share your project details; we will prepare a suitable model and capacity recommendation.
Multi · Ground / Water / Air Source · Built-in Wi-Fi
flexoTHERM
exclusive
Multi heat pump that can work with ground, water and air heat sources. Built-in Wi-Fi, 5–19 kW capacity options and integrated tank capability with flexoCOMPACT exclusive.
Ground + Water + Air Source
Built-in Wi-Fi
5 Capacity Options
5–19 kW
flexoCOMPACT Tank Option
Features
flexoTHERM exclusive — What Does It Offer?
Ground, Water and Air Sources
Multi structure that can work with three different heat sources. The most suitable source can be selected according to project conditions.
Built-in Wi-Fi
No additional module is required for myVAILLANT. App control is ready from installation.
5–19 kW Wide Capacity
5 different capacity options for villas, multi-apartment buildings and small commercial projects.
flexoCOMPACT Tank Option
Combination with flexoCOMPACT exclusive with integrated hot water tank is possible.
Indoor Installation (Ground/Water)
There is no outdoor unit in ground or water source use. There is no noise issue.
Remote Operation
Remote operation and myVAILLANT integration via Wi-Fi connection.
Technical Data
Model Features
| Feature | Value / Information |
|---|---|
| Type | Multi heat pump |
| Heat sources | Ground, water and air |
| Capacity options | 5, 8, 11, 15, 19 kW |
| Wi-Fi module | Built-in |
| myVAILLANT compatibility | Yes |
| Tank option | Integrated tank with flexoCOMPACT exclusive |
| Installation | Easy installation, remote operation capability |
* Based on official Vaillant sources. Installation requirements may vary for air source use.
Installation Requirements
Points to Consider for flexoTHERM
Indoor Technical Space
The device is installed indoors. Sufficient technical space, water and electrical connections are required.
Ground/Water Source Use
A borehole or horizontal ground collector is required. Ground assessment must be performed.
Air Source Use
An additional unit is required for air source connection. Installation conditions are evaluated during the site survey.
Project Consulting
flexoTHERM exclusive — Project Analysis
Request capacity assessment and feasibility analysis for your large project.