UK manufacturer configuration · HM121MR U34
LG HM121MR U34 in the exact manufacturer-listed UK configuration.
Specifications checked 19 Oct 2026.
Amazon links open search results. Check the exact variant, current price and availability with the retailer.
Manufacturer specificationsUK manufacturer configuration · HM123MR U34
LG HM123MR U34 in the exact manufacturer-listed UK configuration.
Specifications checked 19 Oct 2026.
Amazon links open search results. Check the exact variant, current price and availability with the retailer.
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Differences first. Select a topic for its graphic, sources and conditions.
Check the exact configuration and source conditions for your use.
Manufacturer specification · Exact manufacturer Product heading. Official current catalogue classes: Heating Solution(AWHP). Indoor, outdoor, hydro and whole-package purposes are not substituted for one another.
Manufacturer specification · Exact manufacturer Product heading. Official current catalogue classes: Heating Solution(AWHP). Indoor, outdoor, hydro and whole-package purposes are not substituted for one another.
Check the exact configuration. Manufacturer specifications describe the listed variant. Confirm compatibility and the seller’s exact model before buying; no overall winner is inferred from incomplete evidence.
3 verified differences, most decision-relevant first. All are also drawn in Visual facts above. Missing information stays separate.
Manufacturer specification · Exact manufacturer Product heading. Official current catalogue classes: Heating Solution(AWHP). Indoor, outdoor, hydro and whole-package purposes are not substituted for one another.
LG UK — HM121MR U34 manufacturer specificationsManufacturer specification · Exact manufacturer Product heading. Official current catalogue classes: Heating Solution(AWHP). Indoor, outdoor, hydro and whole-package purposes are not substituted for one another.
LG UK — HM123MR U34 manufacturer specificationsCheck the exact configuration and source conditions for your use.
Manufacturer specification · Each declaration has its own manufacturer operating point, component, measurement method or electrical basis. They are not equivalent unqualified figures. POWER SUPPLY — Voltage, phase, frequency (V, Ø, Hz): 220-240, 1, 50. Heating/cooling output is separate from electrical consumption and supply. Sound power and sound pressure remain separately labelled in the original rows. No COP/SCOP/EER/SEER conversion, seasonal average or ranking is calculated.
LG UK — HM121MR U34 manufacturer specificationsManufacturer specification · Each declaration has its own manufacturer operating point, component, measurement method or electrical basis. They are not equivalent unqualified figures. POWER SUPPLY — Voltage, phase, frequency (V, Ø, Hz): 380-415, 3, 50. Heating/cooling output is separate from electrical consumption and supply. Sound power and sound pressure remain separately labelled in the original rows. No COP/SCOP/EER/SEER conversion, seasonal average or ranking is calculated.
LG UK — HM123MR U34 manufacturer specificationsCheck the exact configuration and source conditions for your use.
Check the exact configuration and source conditions for your use.
The manufacturer does not supply complete, unambiguous unit-labelled dimensions for the relevant product/components. Original declarations: none. Missing units or malformed component values are not guessed. · Manufacturer specification · The manufacturer does not supply complete, unambiguous unit-labelled dimensions for the relevant product/components. Original declarations: none. Missing units or malformed component values are not guessed.
LG UK — HM121MR U34 manufacturer specificationsThe manufacturer does not supply complete, unambiguous unit-labelled dimensions for the relevant product/components. Original declarations: none. Missing units or malformed component values are not guessed. · Manufacturer specification · The manufacturer does not supply complete, unambiguous unit-labelled dimensions for the relevant product/components. Original declarations: none. Missing units or malformed component values are not guessed.
LG UK — HM123MR U34 manufacturer specificationsEvidence is missing or conflicting on at least one side. This is not a verified difference.
34 shared fields have the same recorded value.
| Specification | LG HM121MR U34 | LG HM123MR U34 |
|---|---|---|
Manufacturer heating capacities at separate operating points SourcesLG HM121MR U34 Manufacturer specification · Each declaration has its own manufacturer operating point, component, measurement method or electrical basis. They are not equivalent unqualified figures. NOMINAL CAPACITY AND COP (A+7/W+35) — Heating capacity (kW): 12.00; NOMINAL CAPACITY AND COP (A+2/W+35) — Heating capacity (kW): 11.00; NOMINAL CAPACITY AND COP (A+7/W+55) — Heating capacity (kW): 11.00. Heating/cooling output is separate from electrical consumption and supply. Sound power and sound pressure remain separately labelled in the original rows. No COP/SCOP/EER/SEER conversion, seasonal average or ranking is calculated. LG UK — HM121MR U34 manufacturer specificationsLG HM123MR U34 Manufacturer specification · Each declaration has its own manufacturer operating point, component, measurement method or electrical basis. They are not equivalent unqualified figures. NOMINAL CAPACITY AND COP (A+7/W+35) — Heating capacity (kW): 12.00; NOMINAL CAPACITY AND COP (A+2/W+35) — Heating capacity (kW): 11.00; NOMINAL CAPACITY AND COP (A+7/W+55) — Heating capacity (kW): 11.00. Heating/cooling output is separate from electrical consumption and supply. Sound power and sound pressure remain separately labelled in the original rows. No COP/SCOP/EER/SEER conversion, seasonal average or ranking is calculated. LG UK — HM123MR U34 manufacturer specifications | 12.00 kW (A+7/W+35); 11.00 kW (A+2/W+35); 11.00 kW (A+7/W+55) | 12.00 kW (A+7/W+35); 11.00 kW (A+2/W+35); 11.00 kW (A+7/W+55) |
Manufacturer cooling capacities at separate operating points SourcesLG HM121MR U34 Manufacturer specification · Each declaration has its own manufacturer operating point, component, measurement method or electrical basis. They are not equivalent unqualified figures. NOMINAL CAPACITY AND EER (A+35/W+18) — Cooling capacity (kW): 12.00; NOMINAL CAPACITY AND EER (A+35/W+7) — Cooling capacity (kW): 12.00. Heating/cooling output is separate from electrical consumption and supply. Sound power and sound pressure remain separately labelled in the original rows. No COP/SCOP/EER/SEER conversion, seasonal average or ranking is calculated. LG UK — HM121MR U34 manufacturer specificationsLG HM123MR U34 Manufacturer specification · Each declaration has its own manufacturer operating point, component, measurement method or electrical basis. They are not equivalent unqualified figures. NOMINAL CAPACITY AND EER (A+35/W+18) — Cooling capacity (kW): 12.00; NOMINAL CAPACITY AND EER (A+35/W+7) — Cooling capacity (kW): 12.00. Heating/cooling output is separate from electrical consumption and supply. Sound power and sound pressure remain separately labelled in the original rows. No COP/SCOP/EER/SEER conversion, seasonal average or ranking is calculated. LG UK — HM123MR U34 manufacturer specifications | 12.00 kW (A+35/W+18); 12.00 kW (A+35/W+7) | 12.00 kW (A+35/W+18); 12.00 kW (A+35/W+7) |
Manufacturer efficiency declarations and source methods SourcesLG HM121MR U34 Manufacturer specification · Each declaration has its own manufacturer operating point, component, measurement method or electrical basis. They are not equivalent unqualified figures. NOMINAL CAPACITY AND EER (A+35/W+18) — EER: 4.75; NOMINAL CAPACITY AND EER (A+35/W+7) — EER: 3.30; NOMINAL CAPACITY AND COP (A+7/W+35) — COP: 4.90; NOMINAL CAPACITY AND COP (A+2/W+35) — COP: 3.65; NOMINAL CAPACITY AND COP (A+7/W+55) — COP: 2.90; SEASONAL EFFICIENCY DATA — SCOP (35℃ / 55℃): 4.67 / 3.47; SEASONAL EFFICIENCY DATA — Seasonal space heating eff. class (35℃ / 55℃): A+++/A++; SEASONAL EFFICIENCY DATA — Seasonal space heating efficiency (ηS) (35℃ / 55℃): 184 / 136. Heating/cooling output is separate from electrical consumption and supply. Sound power and sound pressure remain separately labelled in the original rows. No COP/SCOP/EER/SEER conversion, seasonal average or ranking is calculated. LG UK — HM121MR U34 manufacturer specificationsLG HM123MR U34 Manufacturer specification · Each declaration has its own manufacturer operating point, component, measurement method or electrical basis. They are not equivalent unqualified figures. NOMINAL CAPACITY AND EER (A+35/W+18) — EER: 4.75; NOMINAL CAPACITY AND EER (A+35/W+7) — EER: 3.30; NOMINAL CAPACITY AND COP (A+7/W+35) — COP: 4.90; NOMINAL CAPACITY AND COP (A+2/W+35) — COP: 3.65; NOMINAL CAPACITY AND COP (A+7/W+55) — COP: 2.90; SEASONAL EFFICIENCY DATA — SCOP (35℃ / 55℃): 4.67 / 3.47; SEASONAL EFFICIENCY DATA — Seasonal space heating eff. class (35℃ / 55℃): A+++/A++; SEASONAL EFFICIENCY DATA — Seasonal space heating efficiency (ηS) (35℃ / 55℃): 184 / 136. Heating/cooling output is separate from electrical consumption and supply. Sound power and sound pressure remain separately labelled in the original rows. No COP/SCOP/EER/SEER conversion, seasonal average or ranking is calculated. LG UK — HM123MR U34 manufacturer specifications | EER 4.75 (A+35/W+18); EER 3.30 (A+35/W+7); COP 4.90 (A+7/W+35); COP 3.65 (A+2/W+35); COP 2.90 (A+7/W+55); SCOP (35℃ / 55℃) 4.67 / 3.47; Seasonal space heating eff. class (35℃ / 55℃) A+++/A++; Seasonal space heating efficiency (ηS) (35℃ / 55℃) 184 / 136 | EER 4.75 (A+35/W+18); EER 3.30 (A+35/W+7); COP 4.90 (A+7/W+35); COP 3.65 (A+2/W+35); COP 2.90 (A+7/W+55); SCOP (35℃ / 55℃) 4.67 / 3.47; Seasonal space heating eff. class (35℃ / 55℃) A+++/A++; Seasonal space heating efficiency (ηS) (35℃ / 55℃) 184 / 136 |
NOMINAL CAPACITY AND EER (A+35/W+18) — Cooling capacity (kW) Sources | 12.00 | 12.00 |
NOMINAL CAPACITY AND EER (A+35/W+18) — EER Sources | 4.75 | 4.75 |
NOMINAL CAPACITY AND EER (A+35/W+7) — Cooling capacity (kW) Sources | 12.00 | 12.00 |
NOMINAL CAPACITY AND EER (A+35/W+7) — EER Sources | 3.30 | 3.30 |
NOMINAL CAPACITY AND COP (A+7/W+35) — COP Sources | 4.90 | 4.90 |
NOMINAL CAPACITY AND COP (A+7/W+35) — Heating capacity (kW) Sources | 12.00 | 12.00 |
NOMINAL CAPACITY AND COP (A+2/W+35) — COP Sources | 3.65 | 3.65 |
NOMINAL CAPACITY AND COP (A+2/W+35) — Heating capacity (kW) Sources | 11.00 | 11.00 |
NOMINAL CAPACITY AND COP (A+7/W+55) — COP Sources | 2.90 | 2.90 |
NOMINAL CAPACITY AND COP (A+7/W+55) — Heating capacity (kW) Sources | 11.00 | 11.00 |
SEASONAL EFFICIENCY DATA — SCOP (35℃ / 55℃) Sources | 4.67 / 3.47 | 4.67 / 3.47 |
SEASONAL EFFICIENCY DATA — Seasonal space heating eff. class (35℃ / 55℃) Sources | A+++/A++ | A+++/A++ |
SEASONAL EFFICIENCY DATA — Seasonal space heating efficiency (ηS) (35℃ / 55℃) Sources | 184 / 136 | 184 / 136 |
Manufacturer refrigerant type SourcesLG HM121MR U34 Manufacturer specification · Each declaration has its own manufacturer operating point, component, measurement method or electrical basis. They are not equivalent unqualified figures. REFRIGERANT — Type: R32. Heating/cooling output is separate from electrical consumption and supply. Sound power and sound pressure remain separately labelled in the original rows. No COP/SCOP/EER/SEER conversion, seasonal average or ranking is calculated. LG UK — HM121MR U34 manufacturer specificationsLG HM123MR U34 Manufacturer specification · Each declaration has its own manufacturer operating point, component, measurement method or electrical basis. They are not equivalent unqualified figures. REFRIGERANT — Type: R32. Heating/cooling output is separate from electrical consumption and supply. Sound power and sound pressure remain separately labelled in the original rows. No COP/SCOP/EER/SEER conversion, seasonal average or ranking is calculated. LG UK — HM123MR U34 manufacturer specifications | R32 | R32 |
REFRIGERANT — GWP Sources | 675 | 675 |
REFRIGERANT — Type Sources | R32 | R32 |
REFRIGERANT — Precharged amount (g) Sources | 2,000 | 2,000 |
Manufacturer electrical supply requirementsDifferent SourcesLG HM121MR U34 Manufacturer specification · Each declaration has its own manufacturer operating point, component, measurement method or electrical basis. They are not equivalent unqualified figures. POWER SUPPLY — Voltage, phase, frequency (V, Ø, Hz): 220-240, 1, 50. Heating/cooling output is separate from electrical consumption and supply. Sound power and sound pressure remain separately labelled in the original rows. No COP/SCOP/EER/SEER conversion, seasonal average or ranking is calculated. LG UK — HM121MR U34 manufacturer specificationsLG HM123MR U34 Manufacturer specification · Each declaration has its own manufacturer operating point, component, measurement method or electrical basis. They are not equivalent unqualified figures. POWER SUPPLY — Voltage, phase, frequency (V, Ø, Hz): 380-415, 3, 50. Heating/cooling output is separate from electrical consumption and supply. Sound power and sound pressure remain separately labelled in the original rows. No COP/SCOP/EER/SEER conversion, seasonal average or ranking is calculated. LG UK — HM123MR U34 manufacturer specifications | 220-240, 1, 50 | 380-415, 3, 50 |
POWER SUPPLY — Voltage, phase, frequency (V, Ø, Hz)Different Sources | 220-240, 1, 50 | 380-415, 3, 50 |
Exact manufacturer unit purposeDifferent SourcesLG HM121MR U34 Manufacturer specification · Exact manufacturer Product heading. Official current catalogue classes: Heating Solution(AWHP). Indoor, outdoor, hydro and whole-package purposes are not substituted for one another. LG UK — HM121MR U34 manufacturer specificationsLG HM123MR U34 Manufacturer specification · Exact manufacturer Product heading. Official current catalogue classes: Heating Solution(AWHP). Indoor, outdoor, hydro and whole-package purposes are not substituted for one another. LG UK — HM123MR U34 manufacturer specifications | R32 Monobloc S, 1Ø, 12kW HM121MR U34 | R32 Monobloc S, 3Ø, 12kW HM123MR U34 |
PIPING CONNECTIONS (WATER) — Inlet diameter (inch) Sources | Male PT 1" | Male PT 1" |
PIPING CONNECTIONS (WATER) — Outlet diameter (inch) Sources | Male PT 1" | Male PT 1" |
EXTERIOR — Color Sources | Warm gray | Warm gray |
EXTERIOR — RAL code Sources | RAL 7044 | RAL 7044 |
Manufacturer operating ranges and conditions SourcesLG HM121MR U34 Manufacturer specification · Each declaration has its own manufacturer operating point, component, measurement method or electrical basis. They are not equivalent unqualified figures. OPERATION RANGE (LEAVING WATER TEMPERATURE) — Cooling (Min. ~ Max.) (℃): 5 ~ 27; OPERATION RANGE (LEAVING WATER TEMPERATURE) — Heating (Min. ~ Max.) (℃): 15 ~ 65; OPERATION RANGE (LEAVING WATER TEMPERATURE) — DHW (Min. ~ Max.) (℃): 15 ~ 80; OPERATION RANGE (OUTDOOR AIR TEMPERATURE) — Cooling (Min. ~ Max.) (℃): 5 ~ 48; OPERATION RANGE (OUTDOOR AIR TEMPERATURE) — Heating & DHW (Min. ~ Max.) (℃): -25 ~ 35. Heating/cooling output is separate from electrical consumption and supply. Sound power and sound pressure remain separately labelled in the original rows. No COP/SCOP/EER/SEER conversion, seasonal average or ranking is calculated. LG UK — HM121MR U34 manufacturer specificationsLG HM123MR U34 Manufacturer specification · Each declaration has its own manufacturer operating point, component, measurement method or electrical basis. They are not equivalent unqualified figures. OPERATION RANGE (LEAVING WATER TEMPERATURE) — Cooling (Min. ~ Max.) (℃): 5 ~ 27; OPERATION RANGE (LEAVING WATER TEMPERATURE) — Heating (Min. ~ Max.) (℃): 15 ~ 65; OPERATION RANGE (LEAVING WATER TEMPERATURE) — DHW (Min. ~ Max.) (℃): 15 ~ 80; OPERATION RANGE (OUTDOOR AIR TEMPERATURE) — Cooling (Min. ~ Max.) (℃): 5 ~ 48; OPERATION RANGE (OUTDOOR AIR TEMPERATURE) — Heating & DHW (Min. ~ Max.) (℃): -25 ~ 35. Heating/cooling output is separate from electrical consumption and supply. Sound power and sound pressure remain separately labelled in the original rows. No COP/SCOP/EER/SEER conversion, seasonal average or ranking is calculated. LG UK — HM123MR U34 manufacturer specifications | 5 ~ 27; 15 ~ 65; 15 ~ 80; 5 ~ 48; -25 ~ 35 | 5 ~ 27; 15 ~ 65; 15 ~ 80; 5 ~ 48; -25 ~ 35 |
Manufacturer sound declarations and measurement methods SourcesLG HM121MR U34 Manufacturer specification · Each declaration has its own manufacturer operating point, component, measurement method or electrical basis. They are not equivalent unqualified figures. SOUND POWER LEVEL — Rated / low noise mode (dB(A)): 60 / 56; SOUND PRESSURE LEVEL AT 1M (CONVERT USING SWL) — Rated / low noise mode (dB(A)): 52 / 48; SOUND PRESSURE LEVEL AT 5M (CONVERT USING SWL) — Rated / low noise mode (dB(A)): 38 / 34. Heating/cooling output is separate from electrical consumption and supply. Sound power and sound pressure remain separately labelled in the original rows. No COP/SCOP/EER/SEER conversion, seasonal average or ranking is calculated. LG UK — HM121MR U34 manufacturer specificationsLG HM123MR U34 Manufacturer specification · Each declaration has its own manufacturer operating point, component, measurement method or electrical basis. They are not equivalent unqualified figures. SOUND PRESSURE LEVEL AT 5M (CONVERT USING SWL) — Rated / low noise mode (dB(A)): 38 / 34; SOUND POWER LEVEL — Rated / low noise mode (dB(A)): 60 / 56; SOUND PRESSURE LEVEL AT 1M (CONVERT USING SWL) — Rated / low noise mode (dB(A)): 52 / 48. Heating/cooling output is separate from electrical consumption and supply. Sound power and sound pressure remain separately labelled in the original rows. No COP/SCOP/EER/SEER conversion, seasonal average or ranking is calculated. LG UK — HM123MR U34 manufacturer specifications | 60 / 56; 52 / 48; 38 / 34 | 38 / 34; 60 / 56; 52 / 48 |
SOUND POWER LEVEL — Rated / low noise mode (dB(A)) Sources | 60 / 56 | 60 / 56 |
SOUND PRESSURE LEVEL AT 1M (CONVERT USING SWL) — Rated / low noise mode (dB(A)) Sources | 52 / 48 | 52 / 48 |
SOUND PRESSURE LEVEL AT 5M (CONVERT USING SWL) — Rated / low noise mode (dB(A)) Sources | 38 / 34 | 38 / 34 |
OPERATION RANGE (LEAVING WATER TEMPERATURE) — Cooling (Min. ~ Max.) (℃) Sources | 5 ~ 27 | 5 ~ 27 |
OPERATION RANGE (LEAVING WATER TEMPERATURE) — Heating (Min. ~ Max.) (℃) Sources | 15 ~ 65 | 15 ~ 65 |
OPERATION RANGE (LEAVING WATER TEMPERATURE) — DHW (Min. ~ Max.) (℃) Sources | 15 ~ 80 | 15 ~ 80 |
OPERATION RANGE (OUTDOOR AIR TEMPERATURE) — Cooling (Min. ~ Max.) (℃) Sources | 5 ~ 48 | 5 ~ 48 |
OPERATION RANGE (OUTDOOR AIR TEMPERATURE) — Heating & DHW (Min. ~ Max.) (℃) Sources | -25 ~ 35 | -25 ~ 35 |
Manufacturer dimensions and configuration basis SourcesLG HM121MR U34 The manufacturer does not supply complete, unambiguous unit-labelled dimensions for the relevant product/components. Original declarations: none. Missing units or malformed component values are not guessed. · Manufacturer specification · The manufacturer does not supply complete, unambiguous unit-labelled dimensions for the relevant product/components. Original declarations: none. Missing units or malformed component values are not guessed. LG UK — HM121MR U34 manufacturer specificationsLG HM123MR U34 The manufacturer does not supply complete, unambiguous unit-labelled dimensions for the relevant product/components. Original declarations: none. Missing units or malformed component values are not guessed. · Manufacturer specification · The manufacturer does not supply complete, unambiguous unit-labelled dimensions for the relevant product/components. Original declarations: none. Missing units or malformed component values are not guessed. LG UK — HM123MR U34 manufacturer specifications | Not listed by the manufacturer | Not listed by the manufacturer |
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Closest heat pumps to this pair by shared key specifications. Not a popularity ranking.
Each record represents an explicitly checked model and configuration. Original import: 5 Sept 2026; this is not its verification date. This is not a list of current offers or a popularity ranking.
