QA takes its energy from the outdoor air, down to −25 °C, and QH-175 turns it into heating, hot water and cooling. 9 or 15 kW, for heat demands up to 11 kW.
QA+QH is more than a technical product. Two units made to belong where they stand: QA outside the house, with an arched fan grille and a calm dark grey finish, and the white QH-175 inside, beside the cabinets.
One indoor module, two outdoor units:
QH-175
QA-9-1 measures 1,165 × 400 × 795 mm and weighs 98 kg; QA-15-3 measures 1,287 × 465 × 928 mm and weighs 140 kg.
Vertical bars in an arch, in front of the fan.
A perforated panel on the side, with the coil behind it.
The unit stands on two rubber feet; a raised base is an accessory where snow builds up.
QH-175 measures 600 × 620 × 1,480 mm and weighs 110 kg, the same indoor module for QA-9-1 and QA-15-3.
The pipe connections sit on top of the cabinet.
600 mm wide, so it takes the place of a cabinet in a row of units.
QH-175 arrives with expansion vessels and safety equipment already connected, and pairs with both outdoor units.
Runs down to −25 °C outdoors, with active defrosting and tank mixing that prevent ice build-up.
Heated via a heat exchanger the moment the tap opens, never stored in a tank, with no legionella risk.
R290, propane, with a GWP of 0.02: just 0.5 kg in QA-9-1 and 0.85 kg in QA-15-3.
QA works outdoors and QH-175 indoors. Together they give heating, cooling and hot water, in 9 or 15 kW.
An inverter-controlled unit with natural refrigerant R290: 0.5 kg in QA-9-1 and 0.85 kg in QA-15-3. Active defrosting with tank mixing prevents ice build-up.
The built-in accumulator tank can heat hot water to around 80 °C and works as a thermal battery, charged when electricity is cheap.
QH-175 stands on 600 × 620 mm and is 1,480 mm tall. Outdoors, QA-9-1 measures 1,165 × 400 × 795 mm (shown) and QA-15-3 1,287 × 465 × 928 mm.
QA runs from −25 to 43 °C outdoor temperature and delivers 25 to 75 °C from the heat pump, 80 °C with the booster in QH-175. Built for Nordic winters and for the hottest summer day.
Both combinations at 35 °C, average climate, as product and as system. A++ at 55 °C.
Sound pressure at 4 metres from the outdoor unit; sound power 58 dB(A) (EN 12102).
And up to 350 L in the Extra hot water mode.
QA-9-1 + QH-175, average climate at 35 °C (EN 14825); 4.92 for QA-15-3.
A complete indoor module with everything in place, a compact outdoor unit with low weight, and click fittings that make service simple.
QH-175 arrives with expansion vessels and safety equipment already connected. Less to fit on site, faster to install.
The same QH-175 works with both QA-9-1 and QA-15-3, so the installer picks the outdoor unit by heat demand.
Excellent serviceability through click fittings, and a compact outdoor unit of 98 or 140 kg that is easy to handle and place.
A raised base lifts the outdoor unit where snow builds up, and QT is the wall-mounted room display. Both are accessories. Raised base (in Swedish) →
QA makes the heat outside. QH-175 holds the hydronics, the accumulator tank and the controls inside.
The app, connectivity, remote diagnostics and automatic updates are included at no extra cost. An educational user interface makes QA+QH easy to use, for installers and users alike; control is in the Qvantum App, with QT, a wall-mounted room display, as an accessory.
Set how the heat pump runs through the week in the Qvantum App, to match how the home is actually used.
Automatic updates from the cloud bring new features at no cost, and they reach heat pumps that are already installed. Always up to date, always smarter. Anonymised operating data from installations across Europe makes every update smarter.
The heat pump avoids the most expensive hours and heats water when electricity is cheapest, with no loss of comfort.
By responding to fluctuations in energy availability, flexready® heat pumps ease grid strain, lower energy costs and improve system stability. Open to partner energy platforms, so heating can follow electricity prices and grid tariffs and work together with solar panels, home batteries and EV charging.
QH-175 has built-in support for active cooling, so the same system keeps the house cool in summer.
Always connected, so predictive maintenance and service can happen at a distance.
With spot price optimisation activated, QA+QH follows the hourly electricity price: it charges the accumulator tank when power is cheap and runs on stored heat when prices peak.
Illustrative example. Actual timing follows the local electricity price or tariff and the settings in the Qvantum App. Indoor comfort stays the same all day.
When the gas boiler in his single-storey house from the early 1990s needed replacing, Per-Håkan in Kvidinge chose QA+QH.
“A couple of days, then it was done.”
Per-Håkan, on switching from gas to QA+QH
Quotes translated from Swedish. Read the full story (in Swedish) →
“Now we can all shower one after the other, and it has really made a difference.”
Dragi, who replaced his heat pump from 2007 with QA+QH
Now that the cold has set in, he uses around 30% less energy than the year before, even with the indoor temperature one degree higher. With two teenagers who like long showers, hot water used to run out; now he adjusts hot water production in the app, depending on who is home. Quote translated from Swedish.
Replacing a gas boiler?
What homeowners and installers usually ask about QA+QH.
QA-9-1 with QH-175 suits heat demands up to 7 kW, and QA-15-3 with QH-175 up to 11 kW. QA-9-1 runs on 230 V single-phase, QA-15-3 on 400 V three-phase. The installer picks the size by the home's heat demand.
Yes. QA runs down to −25 °C outdoors, and active defrosting with tank mixing prevents ice build-up. A raised base is available as an accessory for snowy locations.
Yes. Cooling is standard, with built-in support for active cooling in QH-175. The same system keeps the house cool in summer.
Declared load profile XL and 230 L of hot water at 40 °C, measured at a tap flow of 10 l/min with cold water coming in at 10 °C, or up to 350 L in the Extra hot water mode. Fresh cold water is heated in a heat exchanger as the tap opens, so it never stands in a tank.
The outdoor unit has a sound power level of 58 dB(A) (EN 12102). Sound pressure is 47 dB(A) at 2 metres and 41 dB(A) at 4 metres, falling to 33 dB(A) at 10 metres.
SCOP is 5.05 for QA-9-1 and 4.92 for QA-15-3 in an average climate at 35 °C, energy class A+++. At 7 °C outdoors and 35 °C supply, the nominal COP is 4.8 and 4.9: each kilowatt-hour of electricity gives almost five of heat. With spot price optimisation activated, the accumulator tank is charged when electricity is cheap and used when prices peak.
Propane is a natural refrigerant with a GWP of 0.02. QA holds 0.5 kg in QA-9-1 and 0.85 kg in QA-15-3, equal to 0.01 and 0.017 kg of CO₂ equivalent.
What QA+QH changes for the installer, from the first visit to service.
| USP | What it means | Impact on the installer's business |
|---|---|---|
| All functions pre-plumbed | Expansion vessels and safety equipment are already connected in QH-175. | Less to fit and faster commissioning. |
| Low weight, compact design | QA-9-1 weighs 98 kg and QA-15-3 140 kg; QH-175 weighs 110 kg on a 600 × 620 mm footprint. | Simpler handling and placement on site. |
| Click fittings | Excellent serviceability through click fittings. | Quicker service visits. |
| One indoor module for both sizes | QH-175 pairs with QA-9-1 and QA-15-3. | One indoor unit to know, stock and install. |
| Fresh hot water via heat exchanger | No legionella risk, and no corrosion protection to choose by water quality. | Fewer site-specific choices. |
| Thermal battery for grid support | The accumulator tank in QH-175 works as a thermal battery and is prepared for grid support services. | A system that is ready as the flexibility market grows. |
| Digital installation guide | The free Qvantum App guides the installer through the installation step by step. | A simple installation, the same way every time. |
| Remote access with QService | Free for installers: remote access, predictive maintenance and real-time support. | Saves time and travel, and gives confidence in every installation. |
| Updates over the air | New features and improvements reach installed heat pumps automatically, and support and optimisation happen at a distance. | Fewer unnecessary service visits, and a customer whose heat pump gets better over time. |
| Warranty registered in the app | The warranty is registered directly in the app at installation. | A quick, easy handover to the homeowner. |
Key figures for the two combinations of outdoor unit and indoor module, from Qvantum's QA+QH datasheet (June 2026) and the technical data on qvantum.com.
QA-9-1 and QA-15-3, for heat demands up to 7 and 11 kW
Energy class, product and system, average climate 35 °C (A++ at 55 °C)
Hot water at 40 °C, up to 350 L in the Extra hot water mode
Declared load profile, water heating class A
Shared by both: QH-175 indoor module, 600 × 620 × 1,480 mm and 110 kg, rated voltage 400 V 3N~ or 230 V 1N~, 50 Hz; outdoor operating range −25 to 43 °C; 25 to 75 °C from the heat pump, 80 °C with the booster in QH-175; electric booster up to 5.0 kW (1 + 2 + 2); 230 L of hot water at 40 °C at a tap flow of 10 l/min and cold water coming in at 10 °C, with the hot water setting at four, and up to 350 L in the Extra hot water mode; water heating class A, declared load profile XL. Refrigerant R290, GWP 0.02; CO₂ equivalent 0.01 kg (QA-9-1) and 0.017 kg (QA-15-3). Sound power level 58 dB(A) (EN 12102); sound pressure 47/41/37/35/33 dB(A) at 2/4/6/8/10 metres, calculated with directivity factor Q = 4. SCOP to EN 14825; output and COP at 7/35 °C are at 7 °C outdoors and 35 °C supply.
Run a project through the calculation tool, and share the customer page with homeowners and installers.
