Varm Boost Series

Name: Varm Boost Series
SKU: varm-boost
Availability: InStock

Natural R290 monoblock with hot water up to 75 °C

Heating capacity8 – 22 kW

RefrigerantR290 (propane)

Hot waterup to 75 °C

SCOP (35 °C)up to 4.64

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Overview

The Varm Boost Series is Varmeks' high-temperature monoblock air-to-water heat pump built on natural refrigerant R290 (propane), an eco-friendly, low-GWP alternative to synthetic refrigerants. Four DC inverter models - 8, 11, 15 and 22 kW - cover homes, villas and small commercial buildings that need higher flow temperatures, for example radiator retrofits or demanding domestic hot water loads, without giving up efficiency.The Varm Boost Series is Motiontec Energy's high-temperature monoblock air-to-water heat pump built on natural refrigerant R290 (propane), an eco-friendly, low-GWP alternative to synthetic refrigerants. Four DC inverter models - 8, 11, 15 and 22 kW - cover homes, villas and small commercial buildings that need higher flow temperatures, for example radiator retrofits or demanding domestic hot water loads, without giving up efficiency.

R290 lets the Boost push heating water to 70 °C and domestic hot water up to 75 °C, while the compressor keeps running at outdoor temperatures down to -25 °C (operating window -25 to 43 °C). Rated heating COP spans 3.81-5.29 at 7/6 °C air and 30/35 °C water. Seasonal performance measured to EN 14825:2022 in average climate reaches SCOP 4.60-4.69 at 35 °C flow (ηs 181-185 %) and SCOP 3.37-3.55 at 55 °C flow (ηs 132-139 %).

Sound pressure at 1 m is only 43-47 dB(A) (sound power 57-62 dB(A)) thanks to a HIGHLY compressor and Shimge water pump housed in a compact, IPX4-rated cabinet. Wi-Fi and IoT connectivity allow remote monitoring, scheduling and service diagnostics. The 8-15 kW units run on 230 V single-phase supply and the 22 kW unit on 380 V three-phase, with refrigerant charges between 0.95 and 1.45 kg.

Key features

Natural, eco-friendly R290 refrigerant (charge 0.95-1.45 kg)
Heating water up to 70 °C and domestic hot water up to 75 °C
Reliable operation down to -25 °C ambient (range -25 to 43 °C)
COP 3.81-5.29; SCOP 4.60-4.69 at 35 °C and 3.37-3.55 at 55 °C (EN 14825:2022)
Seasonal space heating efficiency ηs up to 184.6 % (35 °C flow)
Very quiet: 43-47 dB(A) sound pressure at 1 m
Wi-Fi and IoT control for remote monitoring and management
HIGHLY compressor, Shimge water pump, IPX4 protection; four models 8-22 kW

Applications

Houses and villas requiring high flow temperatures
Radiator system retrofits replacing gas or oil boilers
Small commercial buildings
Domestic hot water production with high outlet temperature
Heating and cooling with underfloor, radiator or fan-coil distribution

Technical specifications

Parameter	Varm Boost 8 kW	Varm Boost 11 kW	Varm Boost 15 kW	Varm Boost 22 kW
Model code	VM-OMBI42008	VM-OMBI42011	VM-OMBI42015	VM-OMBI42022
Power supply	230V/1Ph/50-60Hz	230V/1Ph/50-60Hz	230V/1Ph/50-60Hz	380V/3Ph/50-60Hz
Heating capacity range (kW)	3.3~8.3	4.5~11.4	5.9~14.8	8.8~22.0
Heating power input range (kW)	0.64~2.18	0.85~2.95	1.13~3.83	1.68~5.77
COP (heating)	3.81~5.17	3.86~5.29	3.86~5.22	3.81~5.24
DHW capacity range (kW)	3.7~7.4	5.2~10.2	6.6~13.2	7.8~17.6
DHW power input range (kW)	0.79~2.10	1.10~2.87	1.41~3.73	1.67~5.01
DHW COP	3.52~4.69	3.55~4.71	3.54~4.67	3.51~4.66
Hot water output (L/h)	159	219	283	377
Cooling capacity range (kW)	2.4~5.8	3.3~8.2	4.3~10.8	6.2~15.3
Cooling power input range (kW)	0.79~2.19	1.08~3.07	1.39~3.99	1.99~5.60
EER	2.65~3.04	2.67~3.06	2.71~3.10	2.73~3.12
Nominal heat output at 35 °C (kW)	5.82	7.89	9.95	14.05
ηs at 35 °C	182.7%	181.0%	182.9%	184.6%
SCOP at 35 °C	4.64	4.6	4.65	4.69
Nominal heat output at 55 °C (kW)	5.59	8.7	9.23	13.47
ηs at 55 °C	136.0%	137.0%	131.9%	138.9%
SCOP at 55 °C	3.48	3.5	3.37	3.55
Sound pressure at 1 m, 35 °C dB(A)	44	43	45	45
Sound power, 35 °C dB(A)	58	57	59	60
Sound pressure at 1 m, 55 °C dB(A)	44	47	46	46
Sound power, 55 °C dB(A)	58	61	60	62
Max power input (kW)	3.1	4.1	5.2	7.6
Max current (A)	14.2	18.8	23.8	14.3
Circuit breaker (A)	20	25	32	20
Cable cross-section (mm²)	2.5	4	6	4
Pipe connection	DN25	DN25	DN25	DN25
Water flow rate (m³/h)	1.43	1.96	2.55	3.78
Net weight (kg)	112	120	138	170
Dimensions W×D×H (mm)	1080×460×820	1080×460×960	1080×480×1060	1080×480×1372
IP rating	IPX4	IPX4	IPX4	IPX4
Refrigerant / charge	R290 / 1.0 kg	R290 / 0.95 kg	R290 / 1.45 kg	R290 / 1.4 kg
Compressor	HIGHLY	HIGHLY	HIGHLY	HIGHLY
Water pump	SHIMGE	SHIMGE	SHIMGE	SHIMGE
Operating ambient range (°C)	-25~43	-25~43	-25~43	-25~43
Heating water temp range (°C)	20~70	20~70	20~70	20~70
DHW water temp range (°C)	20~60	20~60	20~60	20~60
Cooling water temp range (°C)	7~35	7~35	7~35	7~35

Test conditions: Heating: air DB/WB 7/6 °C, water in/out 30/35 °C. DHW: air DB/WB 7/6 °C, water in/out 15/55 °C. Cooling: air DB/WB 35/24 °C, water in/out 12/7 °C. Seasonal data per EN 14825:2022, average climate. Values taken from the 2026 English catalog; the web page lists slightly different COP minima for the 8 and 11 kW models (2.85 / 2.86).

Values are taken from the manufacturer's current catalogue and may change without notice. Please request the latest datasheet before final design.