{"title":"Heat Pump Water Heater","description":"\u003ch2\u003eHeat pump water heaters for efficient hot water\u003c\/h2\u003e\n\u003cp\u003eHeat a full tank of hot water while using a fraction of the power of a standard electric cylinder. Our heat pump water heater range uses heat-exchange technology to draw warmth from the surrounding air and transfer it into the tank, giving New Zealand homes reliable hot water with lower running costs. It suits both new builds and upgrades from older electric or gas systems.\u003c\/p\u003e\n\u003ch2\u003eHow a heat pump water heater works\u003c\/h2\u003e\n\u003cp\u003eInstead of heating water directly with an electric element, a heat pump water heater moves heat from the air into the water. Because it transfers heat rather than generating all of it, it can deliver the same hot water for a portion of the electricity a conventional cylinder would draw. A built-in tank stores the hot water so it is ready when the household needs it.\u003c\/p\u003e\n\u003ch2\u003eRunning costs and savings\u003c\/h2\u003e\n\u003cp\u003eHot water is one of the largest energy users in a typical NZ home. A heat pump water heater can noticeably reduce that cost compared with a standard electric cylinder, with the exact saving depending on household size, local climate and your power plan. The efficiency also pairs well with rooftop solar, since the system can run during the day when generation is highest.\u003c\/p\u003e\n\u003ch2\u003eWhat size do I need?\u003c\/h2\u003e\n\u003cp\u003eTank capacity should match how much hot water the household uses across a day. As a general guide:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eHousehold\u003c\/th\u003e\n\u003cth\u003eSuggested capacity\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 to 3 people\u003c\/td\u003e\n\u003ctd\u003e170L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4 to 6 people\u003c\/td\u003e\n\u003ctd\u003e280L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eOur range includes 170L and 280L models, with a 280L option featuring WiFi control and R290 refrigerant. For larger or high-demand households, the 280L tank gives more buffer for back-to-back showers.\u003c\/p\u003e\n\u003ch2\u003eHeat pump water heater FAQs\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDoes a heat pump water heater work through a NZ winter?\u003c\/strong\u003e\u003cbr\u003eYes. The system is built to keep supplying hot water in cooler weather, drawing on the stored hot water in the tank during peak demand.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does it compare with a gas or electric system?\u003c\/strong\u003e\u003cbr\u003eIt typically runs at a lower ongoing cost than a standard electric cylinder. If you are weighing options, compare our \u003ca href=\"\/collections\/gas-water-heater\"\u003egas water heater\u003c\/a\u003e range and the full \u003ca href=\"\/collections\/water-heater-system\"\u003ewater heater system\u003c\/a\u003e collection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it run with solar?\u003c\/strong\u003e\u003cbr\u003eYes. Running the heat pump during daylight hours lets it use solar generation, lowering grid power use further.\u003c\/p\u003e\n\u003cp\u003eLooking at whole-home efficiency? Explore our \u003ca href=\"\/collections\/heat-pump-air-conditioner\"\u003eheat pump air conditioners\u003c\/a\u003e for heating and cooling.\u003c\/p\u003e","products":[{"product_id":"midea-170l-r290-heat-pump-water-heater-wifi-rsj-15-190rdn7-l2","title":"Midea 170L R290 Heat Pump Water Heater with Wi-Fi | 5 Years Warranty | RSJ-15\/190RDN7-L2","description":"\u003cp\u003e\u003cstrong\u003e5 Years Warranty, including the tank cylinder, compressor and labour.\u003c\/strong\u003e The Midea RSJ-15\/190RDN7-L2 170L Heat Pump Water Heater transfers heat from the surrounding air into stored water, providing an efficient hot-water solution for smaller New Zealand households.\u003c\/p\u003e\n\u003cp\u003eIts 170-litre capacity is a practical fit for apartments, townhouses and homes with lighter daily demand. Wi-Fi control makes it convenient to monitor settings remotely, adjust temperature, schedule operation and choose a heating mode from your smartphone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProfessional installation is required.\u003c\/strong\u003e This unit must be installed by qualified electricians and licensed plumbers in accordance with applicable New Zealand requirements and the supplied manual.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e170L hot-water storage capacity\u003c\/li\u003e\n\u003cli\u003eWi-Fi monitoring, scheduling and temperature control\u003c\/li\u003e\n\u003cli\u003eR290 refrigerant\u003c\/li\u003e\n\u003cli\u003eSelectable heating modes to suit hot-water demand\u003c\/li\u003e\n\u003cli\u003e1.8kW water-heating capacity\u003c\/li\u003e\n\u003cli\u003e1.1kW electric backup heater\u003c\/li\u003e\n\u003cli\u003eOverload, temperature and electrical leakage protection\u003c\/li\u003e\n\u003cli\u003e5 years warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModel \/ SKU: RSJ-15\/190RDN7-L2\u003c\/li\u003e\n\u003cli\u003eStorage capacity: 170L\u003c\/li\u003e\n\u003cli\u003eWater-heating capacity: 1800W\u003c\/li\u003e\n\u003cli\u003eRated electrical power: 1900W\u003c\/li\u003e\n\u003cli\u003eElectric-heater power: 1100W\u003c\/li\u003e\n\u003cli\u003ePower supply: 220–240V, 50Hz\u003c\/li\u003e\n\u003cli\u003eControls: Wi-Fi control, selectable heating modes and scheduled operation\u003c\/li\u003e\n\u003cli\u003eUnit dimensions (diameter × height): 552 × 1692mm\u003c\/li\u003e\n\u003cli\u003eRefrigerant: R290 (0.29kg)\u003c\/li\u003e\n\u003cli\u003eOutlet-water temperature: 55–70°C; default 60°C\u003c\/li\u003e\n\u003cli\u003eMaximum water pressure: 0.85MPa\u003c\/li\u003e\n\u003cli\u003eWarranty: 5 years\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eManual book:\u003c\/strong\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0280\/1598\/4674\/files\/16125300A16870__REACH_RoHS_MIDEA-MD23IU-002AW-0301_190L_300L_G0000860_16125300A16870_2.pdf?v=1763936507\" target=\"_blank\" rel=\"noopener\"\u003eDownload the Midea RSJ-15\/190RDN7-L2 manual (PDF)\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eActual energy use and recovery performance depend on inlet-water temperature, ambient conditions, installation and household demand. \u003c\/em\u003e\u003c\/p\u003e","brand":"Midea","offers":[{"title":"Default Title","offer_id":43193243041941,"sku":"RSJ-15\/190RDN7-L2","price":1999.0,"currency_code":"NZD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0502\/9829\/0325\/files\/RSJ-15190RDN7-L2Front.png?v=1737422904"},{"product_id":"midea-280l-r290-heat-pump-water-heater-wifi-rsj-23-300rdn7-l2","title":"Midea 280L R290 Heat Pump Water Heater with Wi-Fi | 5 Years Warranty | RSJ-23\/300RDN7-L2","description":"\u003cp\u003e\u003cstrong\u003e5 Years Warranty, including the tank cylinder, compressor and labour.\u003c\/strong\u003e The Midea RSJ-23\/300RDN7-L2 280L Heat Pump Water Heater uses heat from the surrounding air to provide an efficient and dependable household hot-water solution.\u003c\/p\u003e\n\u003cp\u003eWith a generous 280-litre capacity, it is well suited to family routines including back-to-back showers, baths, laundry and kitchen cleaning. Wi-Fi control lets you monitor settings remotely, adjust the water temperature, schedule operation and select a suitable heating mode from your smartphone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProfessional installation is required.\u003c\/strong\u003e This unit must be installed by qualified electricians and licensed plumbers in accordance with applicable New Zealand requirements and the supplied manual.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLarge 280L hot-water storage capacity\u003c\/li\u003e\n\u003cli\u003eWi-Fi monitoring, scheduling and temperature control\u003c\/li\u003e\n\u003cli\u003eR290 refrigerant\u003c\/li\u003e\n\u003cli\u003eSelectable heating modes to suit hot-water demand\u003c\/li\u003e\n\u003cli\u003e2.5kW water-heating capacity\u003c\/li\u003e\n\u003cli\u003e1.1kW electric backup heater\u003c\/li\u003e\n\u003cli\u003eOverload, temperature and electrical leakage protection\u003c\/li\u003e\n\u003cli\u003e5 years warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModel \/ SKU: RSJ-23\/300RDN7-L2\u003c\/li\u003e\n\u003cli\u003eStorage capacity: 280L\u003c\/li\u003e\n\u003cli\u003eWater-heating capacity: 2500W\u003c\/li\u003e\n\u003cli\u003eRated electrical power: 2000W\u003c\/li\u003e\n\u003cli\u003eElectric-heater power: 1100W\u003c\/li\u003e\n\u003cli\u003ePower supply: 220–240V, 50Hz\u003c\/li\u003e\n\u003cli\u003eControls: Wi-Fi control, selectable heating modes and scheduled operation\u003c\/li\u003e\n\u003cli\u003eUnit dimensions (diameter × height): 650 × 1960mm\u003c\/li\u003e\n\u003cli\u003eRefrigerant: R290 (0.42kg)\u003c\/li\u003e\n\u003cli\u003eOutlet-water temperature: 55–70°C; default 60°C\u003c\/li\u003e\n\u003cli\u003eMaximum water pressure: 0.85MPa\u003c\/li\u003e\n\u003cli\u003eWarranty: 5 years\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eManual book:\u003c\/strong\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0280\/1598\/4674\/files\/16125300A16870__REACH_RoHS_MIDEA-MD23IU-002AW-0301_190L_300L_G0000860_16125300A16870_2.pdf?v=1763936507\" target=\"_blank\" rel=\"noopener\"\u003eDownload the Midea RSJ-23\/300RDN7-L2 manual (PDF)\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eActual energy use and recovery performance depend on inlet-water temperature, ambient conditions, installation and household demand. \u003c\/em\u003e\u003c\/p\u003e","brand":"Midea","offers":[{"title":"Default Title","offer_id":47020231295125,"sku":"RSJ-23\/300RDN7-L2","price":3199.0,"currency_code":"NZD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0502\/9829\/0325\/files\/RSJ-15190RDN7-L2Front_af35e1e9-c292-4bcc-96ca-9fb5db3da149.png?v=1772317183"},{"product_id":"midea-235l-r290-heat-pump-water-heater-rsj-v28-235rdn7-l2","title":"Midea 235L R290 Heat Pump Water Heater | 5 Years Warranty | RSJ-V28\/235RDN7-L2","description":"\u003cp\u003e\u003cstrong\u003e5 Years Warranty, including the tank cylinder, compressor and labour.\u003c\/strong\u003e The Midea RSJ-V28\/235RDN7-L2 235L Heat Pump Water Heater transfers heat from the surrounding air into stored water, providing an energy-efficient alternative to conventional direct electric water heating.\u003c\/p\u003e\n\u003cp\u003eIts 235-litre tank is designed for dependable household hot-water storage, helping support everyday showers, cleaning and kitchen use. A heat-pump COP of up to 4.80, R290 refrigerant and an integrated 1.1kW electric heater combine efficient operation with useful backup heating performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProfessional installation is required.\u003c\/strong\u003e This product must be installed by qualified electricians and plumbers in accordance with applicable New Zealand requirements and the supplied installation instructions.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e235L hot-water storage capacity\u003c\/li\u003e\n\u003cli\u003e2.80kW heat-pump water-heating capacity\u003c\/li\u003e\n\u003cli\u003eHeat-pump COP up to 4.80\u003c\/li\u003e\n\u003cli\u003eR290 refrigerant\u003c\/li\u003e\n\u003cli\u003eAdjustable outlet temperature from 55°C to 70°C; 60°C default\u003c\/li\u003e\n\u003cli\u003e1.1kW integrated electric heater\u003c\/li\u003e\n\u003cli\u003eAutomatic defrosting and multiple system protections\u003c\/li\u003e\n\u003cli\u003e48dB(A) sound pressure level\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModel \/ SKU: RSJ-V28\/235RDN7-L2\u003c\/li\u003e\n\u003cli\u003eStorage capacity: 235L\u003c\/li\u003e\n\u003cli\u003ePower supply: 1 phase, 220–240V, 50Hz\u003c\/li\u003e\n\u003cli\u003eHeat-pump operating ambient temperature: -7°C to 43°C\u003c\/li\u003e\n\u003cli\u003eElectric-heater operating ambient temperature: -20°C to 45°C\u003c\/li\u003e\n\u003cli\u003eHeat-pump \/ electric-heater capacity: 2.80kW \/ 1.10kW\u003c\/li\u003e\n\u003cli\u003eHeat-pump \/ electric-heater COP: 4.80 \/ 0.95\u003c\/li\u003e\n\u003cli\u003eRated electrical power: 2050W\u003c\/li\u003e\n\u003cli\u003eMaximum current: 9.0A\u003c\/li\u003e\n\u003cli\u003eControls: automatic\/manual start and timer\u003c\/li\u003e\n\u003cli\u003eUnit dimensions (diameter × height): 650 × 1730mm\u003c\/li\u003e\n\u003cli\u003ePackage dimensions (W × D × H): 770 × 740 × 1810mm\u003c\/li\u003e\n\u003cli\u003eNet \/ gross weight: 125 \/ 154.5kg\u003c\/li\u003e\n\u003cli\u003eRefrigerant: R290, 0.43kg\u003c\/li\u003e\n\u003cli\u003eMaximum water pressure: 0.85MPa\u003c\/li\u003e\n\u003cli\u003eWarranty: 5 years\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eManual book:\u003c\/strong\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0280\/1598\/4674\/files\/REACH_RoHS_MIDEA-MD24IU-001AW-03_E0248301_JH_16125300004719_16125300A22248.pdf?v=1784167841\" target=\"_blank\" rel=\"noopener\"\u003eDownload the Midea RSJ-V28\/235RDN7-L2 manual (PDF)\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eActual energy use and hot-water recovery depend on inlet-water temperature, ambient conditions, installation and household demand. Specifications are based on supplier information and may be updated without notice.\u003c\/em\u003e\u003c\/p\u003e","brand":"Midea","offers":[{"title":"Default Title","offer_id":47776081182869,"sku":"RSJ-V28\/235RDN7-L2","price":2699.0,"currency_code":"NZD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0502\/9829\/0325\/files\/midea-rsj-v28-235rdn7-l2-235l-heat-pump-water-heater.png?v=1787652644"},{"product_id":"midea-300l-2-8kw-r290-split-heat-pump-water-heater-mhw-v28wd2n7","title":"Midea 300L 2.8kW R290 Split Heat Pump Water Heater | 5-Year Warranty | MHW-V28WD2N7 + MT-300R28E20","description":"\u003cp\u003e\u003cstrong\u003eWarranty: 5 years.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Midea MHW-V28WD2N7 + MT-300R28E20 Split Heat Pump Water Heater combines a 2.8kW R290 outdoor heat-pump unit with a 300L vitreous-enamel storage tank and integrated electric backup heater. Its split-system layout gives installers flexibility when positioning the outdoor unit and cylinder.\u003c\/p\u003e\n\u003cp\u003eDesigned for family homes with higher daily hot-water demand, the 300L tank provides useful capacity for showers, baths, laundry and kitchen cleaning. DC inverter compressor and fan technology, automatic temperature control and operation across a wide ambient range support dependable year-round performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProfessional installation is required.\u003c\/strong\u003e This system must be installed and commissioned by qualified electricians, licensed plumbers and appropriately qualified refrigeration personnel in accordance with applicable New Zealand requirements and all supplied manuals.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eComplete split-system package: MHW-V28WD2N7 outdoor unit + MT-300R28E20 300L tank\u003c\/li\u003e\n\u003cli\u003e2.8kW heat-pump heating capacity\u003c\/li\u003e\n\u003cli\u003eR290 refrigerant, 470g charge\u003c\/li\u003e\n\u003cli\u003eDC inverter rotary compressor and DC inverter fan\u003c\/li\u003e\n\u003cli\u003e2.1kW integrated electric backup heater (technical manual)\u003c\/li\u003e\n\u003cli\u003eLeaving-water temperature range: 52°C–60°C\u003c\/li\u003e\n\u003cli\u003eOperating ambient temperature range: -15°C to 46°C\u003c\/li\u003e\n\u003cli\u003eMaximum refrigerant pipe length: 20m; maximum height difference: 10m\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOutdoor-unit model \/ SKU: MHW-V28WD2N7\u003c\/li\u003e\n\u003cli\u003eWater-tank model: MT-300R28E20\u003c\/li\u003e\n\u003cli\u003eTank capacity: 300L\u003c\/li\u003e\n\u003cli\u003eWarranty: 5 years\u003c\/li\u003e\n\u003cli\u003eHeat-pump heating capacity: 2800W\u003c\/li\u003e\n\u003cli\u003eHeat-pump electrical input: 1150W\u003c\/li\u003e\n\u003cli\u003eElectric backup heater: 2100W (technical manual)\u003c\/li\u003e\n\u003cli\u003ePower supply: 220–240V, 1 phase, 50Hz\u003c\/li\u003e\n\u003cli\u003eOutdoor sound pressure level: 54dB(A)\u003c\/li\u003e\n\u003cli\u003eOutdoor-unit dimensions (L × W × H): 804 × 327 × 555mm\u003c\/li\u003e\n\u003cli\u003eOutdoor-unit package dimensions: 845 × 390 × 630mm\u003c\/li\u003e\n\u003cli\u003eOutdoor-unit net weight: 27kg\u003c\/li\u003e\n\u003cli\u003eTank dimensions (W × D × H): 580 × 580 × 1735mm\u003c\/li\u003e\n\u003cli\u003eTank package dimensions: 1835 × 690 × 670mm\u003c\/li\u003e\n\u003cli\u003eTank net weight: approximately 102kg\u003c\/li\u003e\n\u003cli\u003eRefrigerant: R290, 470g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDocuments \u0026amp; Video\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0280\/1598\/4674\/files\/16122200003051_SAFETY_MANUAL-R32_R29_0_-OBM-16122200003051.pdf?v=1771808904\" target=\"_blank\" rel=\"noopener\"\u003eSafety manual (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0280\/1598\/4674\/files\/16125300004279_WP-MD23IU-123D-EN_2__compressed.pdf?v=1771809020\" target=\"_blank\" rel=\"noopener\"\u003eInstallation manual (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0280\/1598\/4674\/files\/TM_Midea_HotWave_Series_20240513.pdf?v=1771808388\" target=\"_blank\" rel=\"noopener\"\u003eTechnical manual (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/videos\/c\/o\/v\/c215178c45cd43c58a8eeb6585877cfc.mp4\" target=\"_blank\" rel=\"noopener\"\u003eProduct video\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eActual energy use and hot-water recovery depend on ambient temperature, inlet-water temperature, installation and household demand.\u003c\/em\u003e\u003c\/p\u003e","brand":"Midea","offers":[{"title":"Default Title","offer_id":47776103170197,"sku":"MHW-V28WD2N7","price":2999.0,"currency_code":"NZD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0502\/9829\/0325\/files\/midea-mhw-v28wd2n7-mt-300r28e20-split-heat-pump-water-heater-1.png?v=1787655489"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0502\/9829\/0325\/collections\/280_0f959849-8352-4c92-987a-05c20812c180.png?v=1782267097","url":"https:\/\/appliancewarehouse.co.nz\/collections\/heat-pump-water-heater.oembed","provider":"Midea Homes","version":"1.0","type":"link"}