Mycond BeeSmart vs Daikin Altherma 3 R W: Heat Pump Comparison Based on HP KEYMARK Certificates

Pick a heat pump from a manufacturer's catalogue and you're essentially trusting their marketing team. The headline COP figures look great, but they're usually measured under cherry-picked lab conditions that rarely match a real installation. HP KEYMARK exists precisely to cut through that.

It's a voluntary European certification scheme — independent, third-party, and built on EN 14825, EN 14511 and EN 12102. The manufacturer ships a unit to an accredited lab, foots the bill for testing, and walks away with either a certificate or nothing. Every unit goes through the same protocol, which means numbers from two different certificates can sit side by side and actually mean something — no conversion factors, no "our methodology says."

Here we're putting two air-to-water split systems under the microscope: Mycond BeeSmart MHCS 035 NBS/UBS and Daikin Altherma 3 R W 6KW/A. Same basic formula — no built-in DHW tank, R32 refrigerant, single-phase 230 V / 50 Hz, similar output range. Six years separate these two certificates — 2024 vs 2018. Both now reference Rev. 14 rules, but Daikin's lab work was done under an earlier version. That's a background factor when the numbers sit next to each other in a table.

Unit Identification

Standard household wiring handles both units — no 3-phase circuit required. For retrofit jobs in older properties, that saves a lot of headaches with the electrician.

Rated Capacity and Design Parameters

Before the COP numbers — output ratings, operating limits, and where each unit needs backup heat.

LT = 35 °C supply water. Works with floor loops, fan coils, low-temp panels.

MT = 55 °C. Standard radiators.

The WTOL numbers are where it gets interesting. At −10 °C, Daikin's LT mode maxes out at 35 °C water supply. Mycond holds 57 °C in both modes regardless. Underfloor set to 35 °C — fine, Daikin copes. Need 40 °C on a cold night — the backup heater takes over, Daikin can't do it alone. Mycond doesn't hit that wall.

Fifty-seven degrees in both modes gives the installer genuine flexibility when sizing the system.

Note: Tbiv listed in the certificate is a reference building calculation parameter per EN 14825 — not the bivalent point of any actual installation. The designer sets that separately, based on the building's real heat loss and the unit's output.

COP at EN 14825 and EN 14511 Test Points

SCOP collapses the whole season into one number. Useful, but a unit can look good in mild weather and lose ground when it gets cold. EN 14825 tests COP at five outdoor temperatures — the full spread is in the table below.

EN 14511 — +7 °C outside, 35 °C or 45 °C flow

LT at standard conditions: Mycond 5.26, Daikin 4.85 — a clear difference. MT reverses it: Daikin 2.70, Mycond 2.54.

EN 14825 — COP across the temperature range

MT at −7 °C goes to Daikin: 1.98 against 1.94.

0 to +10 °C is where most of the heating season actually sits in central Europe. Mycond leads across that whole band.

SCOP — Seasonal Efficiency

SCOP ends up on the energy label. It's the season-weighted average COP — how each unit performs across the full spread of outdoor temperatures weighted by how often each one actually occurs. Legally binding for EU classification.

A 120 m² house, 14,800 kWh heat load: LT — Mycond 3,211 kWh, Daikin 3,274. MT — 4,458 vs 4,526. Difference is 63 and 68 kWh respectively. Your tariff does the rest.

Annual Consumption Qhe and Degradation Coefficient Cdh

Qhe is the annual consumption figure from the test report. Cdh corrects for on/off cycling losses — a value below 1.0 means some degradation is already priced in.

Daikin's Cdh of 1.00 could reflect genuinely low cycling losses from good inverter control — or it could be an artefact of how an older version of the standard treated that parameter. Hard to say without knowing the test context. Six years is a long time in measurement methodology.

332 kWh/year apart in LT, nearly 700 kWh in MT. Those figures track the SCOP gap.

Noise Levels

People underestimate noise at the spec stage. They remember it six months later.

53 vs 60 dB(A) on the outdoor unit. That's 7 dB — roughly half the perceived loudness. Next to a garden fence it's the kind of thing neighbours mention.

Indoor unit flips the result. Daikin at 42 dB(A), Mycond at 45–46. Three or four decibels registers in a quiet space. In a plant room in the basement — probably irrelevant. Utility room next to a bedroom — less so.

Standby Power Consumption

Not much per hour — but these loads never stop.

PTO: 9 W in Daikin's favour. Two thousand thermostat-off hours a year — 18 kWh.

Crankcase heater: Mycond 27 W, Daikin zero. Three thousand cold hours — about 81 kWh. Between the two, Mycond's idle load runs around 99 kWh/year higher. That eats into the SCOP lead.

Summary Table

Analysis and Conclusions

Where Mycond Has the Edge

Seasonal efficiency: Mycond ahead by 2% in LT, 1.5% in MT. Yearly draw is lower by 332 kWh in LT and 699 kWh in MT. Pull up any of the five EN 14825 test temperatures — Mycond wins all but one.

Outside noise: 53 dB(A) on Mycond, 60 on Daikin. On a terrace street that margin decides who gets a knock on the door.

WTOL 57 °C in LT mode — the system designer can spec 40 °C floor circuits without worrying about cold-weather limitations.

Mycond works best in: a 100–130 m² house, floor heating or low-temp panels, bivalent system with backup below −7 °C. The LT Qhe gap is 332 kWh/year — do the maths with your tariff. Quiet outdoor unit is a real advantage on tight plots.

Where Daikin Has the Edge

MT mode, EN 14511: COP 2.70 vs 2.54. Old building, cast-iron radiators, 55 °C all winter — that difference adds up over a season.

Indoor unit is quieter: 42 dB(A). PCK draws nothing. PTO is half of Mycond's. If the indoor unit is in or near occupied rooms, or the system cycles often between heating and idle, those figures count.

Rated output is 7.00 kW across both modes vs Mycond's 6.39 kW in LT. If the heat loss calculation runs close to the limit, that buffer matters.

Sweet spot for Daikin: older house, 55 °C radiator system, indoor unit near living space, or a job that needs a bit more capacity headroom.

A Note on Comparability

Six years between these certificates isn't nothing. EN 14825 has been revised in the interim, including how Cdh gets calculated. Mycond at 0.900 and Daikin at 1.00 weren't tested under identical methodological conditions. The Qhe arithmetic stands, but the backdrop is worth keeping in mind.

Conclusion

By the HP KEYMARK numbers, Mycond BeeSmart 035 has the stronger case in most categories — higher SCOP in both modes, better COP across the temperature range that makes up most of a heating season, a noticeably quieter outdoor unit, and a more useful WTOL in LT. Daikin earns its place where MT efficiency matters consistently, where the indoor unit location is noise-sensitive, or where standby losses are being watched.

Pick based on the actual system — building type, emitter temperatures, unit placement. Neither machine is the universal answer.

Important Technical Notes

• The circulation pump isn't in the SCOP figure. If it's built into the unit, check whether its draw is counted in the PE values in the report.
• For EU energy labelling, SCOP_ref is the binding number — not SCOP_on.
• Declared SCOP can deviate from measured by no more than −8% under EN 14825 / KEYMARK rules.
• Lab results from one sample under controlled conditions. In the field, installation quality, system hydraulics and control settings all move the number.
• Daikin's certificate covers a chilled water mode (+7 °C/12 °C) — cooling is possible. Doesn't touch the heating figures, but worth knowing if the project scope might expand.

Sources

1. Mycond BeeSmart MHCS 035 NBS/UBS — registration number 041-K088-04, BRE Global Limited, 03.04.2024, HP KEYMARK Scheme Rules Rev. 13
2. Daikin Altherma 3 R W 6KW/A (ERGA06EVA / EHBX08E6V and others) — registration number 011-1W0246, DIN CERTCO GmbH / DTI Denmark, 02.03.2018, HP KEYMARK Scheme Rules Rev. 14
3. Official Heat Pump KEYMARK certificate database: heatpumpkeymark.com.