{"product_id":"navien-pem750-r290-monobloc-air-source-heat-pump-4-6-8-10-17kw-variant","title":"Navien PEM750 R290 Monobloc Air Source Heat Pump — 4\/6\/8\/10\/17kW Variant","description":"\u003cdiv style=\"font-size: 16px; font-family: Arial,Helvetica,sans-serif; color: #222; max-width: 900px; margin: 0 auto; line-height: 1.55;\"\u003e\n\u003cp style=\"margin: 0 0 14px 0;\"\u003eThe \u003cstrong\u003eNavien PEM750\u003c\/strong\u003e is Navien's flagship \u003cstrong\u003eR290 propane monobloc air source heat pump\u003c\/strong\u003e for UK residential properties. Available in \u003cstrong\u003efive capacities from 4 kW to 17 kW\u003c\/strong\u003e — select the size that matches your calculated heat loss on the variant selector. Every variant shares the same platform: R290 refrigerant (GWP 3), \u003cstrong\u003eflow temperatures up to 75°C\u003c\/strong\u003e, reliable operation down to -20°C ambient, MCS\/Keymark certified, BUS grant eligible, and backed by Navien's UK warranty of up to \u003cstrong\u003eseven years parts and labour\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 120px; background: #008377CF; color: #fff; padding: 14px 10px; text-align: center; border-radius: 6px;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; line-height: 1.1;\"\u003e4–17 kW\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: 0.95; letter-spacing: 0.3px; text-transform: uppercase;\"\u003eOutput range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 120px; background: #008377CF; color: #fff; padding: 14px 10px; text-align: center; border-radius: 6px;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; line-height: 1.1;\"\u003eR290\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: 0.95; letter-spacing: 0.3px; text-transform: uppercase;\"\u003eRefrigerant (GWP 3)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 120px; background: #008377CF; color: #fff; padding: 14px 10px; text-align: center; border-radius: 6px;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; line-height: 1.1;\"\u003eUp to 75°C\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: 0.95; letter-spacing: 0.3px; text-transform: uppercase;\"\u003eMax flow temp\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 120px; background: #008377CF; color: #fff; padding: 14px 10px; text-align: center; border-radius: 6px;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; line-height: 1.1;\"\u003eSCOP 4.87\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: 0.95; letter-spacing: 0.3px; text-transform: uppercase;\"\u003ePeak efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 120px; background: #008377CF; color: #fff; padding: 14px 10px; text-align: center; border-radius: 6px;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; line-height: 1.1;\"\u003e-20°C\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: 0.95; letter-spacing: 0.3px; text-transform: uppercase;\"\u003eMin ambient\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; min-width: 120px; background: #008377CF; color: #fff; padding: 14px 10px; text-align: center; border-radius: 6px;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; line-height: 1.1;\"\u003e7 years\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: 0.95; letter-spacing: 0.3px; text-transform: uppercase;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #E6F3F1; border-left: 4px solid #008377; padding: 14px 16px; margin: 16px 0; border-radius: 0 4px 4px 0;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; margin-bottom: 4px;\"\u003eBUS grant eligible\u003c\/div\u003e\n\u003cdiv\u003eThe Navien PEM750 is eligible for the UK \u003cstrong\u003eBoiler Upgrade Scheme grant\u003c\/strong\u003e when installed by an MCS-certified installer in an eligible property. The grant is paid directly to your installer and discounted from your quote.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #FFF6E0; border-left: 4px solid #C89200; padding: 14px 16px; margin: 16px 0; border-radius: 0 4px 4px 0;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #c89200; margin-bottom: 4px;\"\u003eR290 outdoor unit siting\u003c\/div\u003e\n\u003cdiv\u003eR290 is an A3 flammable refrigerant. UK installation requires minimum clearances from doors, windows, drains and ignition sources per Navien's technical manual. Most domestic gardens accommodate the unit easily — constrained sites need design review before ordering.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #FBEAE9; border-left: 4px solid #B3261E; padding: 14px 16px; margin: 16px 0; border-radius: 0 4px 4px 0;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #b3261e; margin-bottom: 4px;\"\u003eMCS-certified installer required\u003c\/div\u003e\n\u003cdiv\u003eTo claim the BUS grant and validate the full Navien manufacturer warranty (up to 7 years parts and labour), this heat pump must be installed and commissioned by an \u003cstrong\u003eMCS-certified heat pump installer\u003c\/strong\u003e. Quality Heating can connect you with our trade network.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"color: #008377; font-size: 18px; margin: 24px 0 10px 0; padding-bottom: 6px; border-bottom: 2px solid #008377CF;\"\u003eChoose your capacity\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; font-size: 14.5px; margin: 8px 0;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"background: rgba(0, 131, 119, 0.81); color: rgb(255, 255, 255); padding: 9px 12px; border: 1px solid rgb(0, 131, 119); text-align: left; font-weight: bold; width: 17.3524%;\"\u003eHeating output\u003c\/th\u003e\n\u003cth style=\"background: rgba(0, 131, 119, 0.81); color: rgb(255, 255, 255); padding: 9px 12px; border: 1px solid rgb(0, 131, 119); text-align: left; font-weight: bold; width: 53.4884%;\"\u003eTypical property fit\u003c\/th\u003e\n\u003cth style=\"background: rgba(0, 131, 119, 0.81); color: rgb(255, 255, 255); padding: 9px 12px; border: 1px solid rgb(0, 131, 119); text-align: left; font-weight: bold; width: 29.1592%;\"\u003eNavien part number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FAFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid rgb(229, 231, 235); width: 17.3524%;\"\u003e4 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid rgb(229, 231, 235); width: 53.4884%;\"\u003eSmall, well-insulated 1–2 bedroom homes and flats\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid rgb(229, 231, 235); width: 29.1592%;\"\u003eGPEM750004VGP01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid rgb(229, 231, 235); width: 17.3524%;\"\u003e6 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid rgb(229, 231, 235); width: 53.4884%;\"\u003eTypical 2–3 bedroom UK homes with average insulation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid rgb(229, 231, 235); width: 29.1592%;\"\u003eGPEM750006VGP01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FAFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid rgb(229, 231, 235); width: 17.3524%;\"\u003e8 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid rgb(229, 231, 235); width: 53.4884%;\"\u003e3–4 bedroom semis and detached homes\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid rgb(229, 231, 235); width: 29.1592%;\"\u003eGPEM750008VGP01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid rgb(229, 231, 235); width: 17.3524%;\"\u003e10 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid rgb(229, 231, 235); width: 53.4884%;\"\u003eLarger 4–5 bedroom detached properties\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid rgb(229, 231, 235); width: 29.1592%;\"\u003eGPEM750010VGP01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FAFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid rgb(229, 231, 235); width: 17.3524%;\"\u003e17 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid rgb(229, 231, 235); width: 53.4884%;\"\u003eVery large detached homes, older properties with retrofitted insulation, or small commercial\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid rgb(229, 231, 235); width: 29.1592%;\"\u003eGPEM750017VGP01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #E6F3F1; border-left: 4px solid #008377; padding: 14px 16px; margin: 16px 0; border-radius: 0 4px 4px 0;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; margin-bottom: 4px;\"\u003eSizing tip\u003c\/div\u003e\n\u003cdiv\u003eAlways size a heat pump from a \u003cstrong\u003ecalculated room-by-room heat loss survey\u003c\/strong\u003e — not from bedroom count or existing boiler size. Oversized heat pumps short-cycle and lose efficiency; undersized units rely too heavily on backup heat. Quality Heating offers free heat loss calculations on request.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"color: #008377; font-size: 18px; margin: 24px 0 10px 0; padding-bottom: 6px; border-bottom: 2px solid #008377CF;\"\u003eWhy choose the Navien PEM750\u003c\/h3\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 10px; margin: 14px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #fff; border: 1px solid #E5E7EB; border-top: 3px solid #008377CF; padding: 14px 16px; border-radius: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; margin-bottom: 6px;\"\u003eR290 refrigerant — GWP 3\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px;\"\u003ePropane refrigerant with a GWP of just 3 — close to \u003cstrong\u003eone-thousand times lower\u003c\/strong\u003e than legacy split heat pump refrigerants. The most future-proof choice ahead of tightening UK F-Gas regulation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #fff; border: 1px solid #E5E7EB; border-top: 3px solid #008377CF; padding: 14px 16px; border-radius: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; margin-bottom: 6px;\"\u003eFlow temperatures up to 75°C\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px;\"\u003eDelivers \u003cstrong\u003e75°C flow temperatures\u003c\/strong\u003e — exceptional for radiator-only retrofits where existing emitters need to stay in place, and ideal for high-temperature DHW production.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #fff; border: 1px solid #E5E7EB; border-top: 3px solid #008377CF; padding: 14px 16px; border-radius: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; margin-bottom: 6px;\"\u003eReliable cold-weather output\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px;\"\u003eRated operation down to \u003cstrong\u003e-20°C ambient\u003c\/strong\u003e — dependable heat delivery through UK winter cold snaps, no supplementary heat required in typical conditions.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #fff; border: 1px solid #E5E7EB; border-top: 3px solid #008377CF; padding: 14px 16px; border-radius: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; margin-bottom: 6px;\"\u003eSCOP up to 4.87 — A+++ ERP\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px;\"\u003eTop-tier seasonal efficiency for meaningful annual running-cost savings versus older split systems and, in most retrofit cases, versus running a gas boiler at current tariffs.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #fff; border: 1px solid #E5E7EB; border-top: 3px solid #008377CF; padding: 14px 16px; border-radius: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; margin-bottom: 6px;\"\u003eSealed monobloc — no on-site F-Gas\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px;\"\u003eRefrigerant circuit fully sealed at the factory. The installer only connects \u003cstrong\u003ewater pipes\u003c\/strong\u003e indoors — no F-Gas brazing required at install, reducing complexity and cost.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #fff; border: 1px solid #E5E7EB; border-top: 3px solid #008377CF; padding: 14px 16px; border-radius: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; margin-bottom: 6px;\"\u003eSmart touch display + app + web\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px;\"\u003eOnboard smart touch display for setup, and dedicated \u003cstrong\u003esmartphone app plus web platform\u003c\/strong\u003e for remote monitoring, scheduling, and fault alerts.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #fff; border: 1px solid #E5E7EB; border-top: 3px solid #008377CF; padding: 14px 16px; border-radius: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; margin-bottom: 6px;\"\u003eShock absorption technology\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px;\"\u003eEnhanced stability through shock absorption in the outdoor unit — reduces transmitted vibration and helps sustain performance across the warranty period.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 240px; background: #fff; border: 1px solid #E5E7EB; border-top: 3px solid #008377CF; padding: 14px 16px; border-radius: 4px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; margin-bottom: 6px;\"\u003eUp to 7-year warranty\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14.5px;\"\u003eBacked by Navien UK's manufacturer warranty of \u003cstrong\u003eup to seven years, parts and labour included\u003c\/strong\u003e — one of the strongest warranty offers on the UK heat pump market.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"color: #008377; font-size: 18px; margin: 24px 0 10px 0; padding-bottom: 6px; border-bottom: 2px solid #008377CF;\"\u003ePlatform specification (all variants)\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; font-size: 14.5px; margin: 8px 0;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #F7FAFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB; font-weight: 600; width: 42%;\"\u003eRange\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB;\"\u003eNavien PEM750\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB; font-weight: 600; width: 42%;\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB;\"\u003eR290 monobloc air source heat pump\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FAFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB; font-weight: 600; width: 42%;\"\u003eAvailable capacities\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB;\"\u003e4 kW \/ 6 kW \/ 8 kW \/ 10 kW \/ 17 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB; font-weight: 600; width: 42%;\"\u003eRefrigerant\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB;\"\u003eR290 propane (GWP 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FAFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB; font-weight: 600; width: 42%;\"\u003eMaximum flow temperature\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB;\"\u003e75°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB; font-weight: 600; width: 42%;\"\u003eMinimum operating ambient\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB;\"\u003e-20°C (rated); reliable operation in UK winter conditions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FAFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB; font-weight: 600; width: 42%;\"\u003ePeak SCOP\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB;\"\u003eUp to 4.87 (35°C low-temperature output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB; font-weight: 600; width: 42%;\"\u003eERP energy label\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB;\"\u003eA+++\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FAFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB; font-weight: 600; width: 42%;\"\u003eElectrical supply\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB;\"\u003e220–240V, 50Hz, single-phase (all variants)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB; font-weight: 600; width: 42%;\"\u003eCertifications\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB;\"\u003eMCS certified, Keymark, BUS Grant eligible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FAFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB; font-weight: 600; width: 42%;\"\u003eOutdoor unit finish\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB;\"\u003eGrey\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB; font-weight: 600; width: 42%;\"\u003eArchitecture\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB;\"\u003eSealed monobloc — no on-site refrigerant brazing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FAFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB; font-weight: 600; width: 42%;\"\u003eCompatible with\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB;\"\u003eRadiators, underfloor heating, DHW cylinders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #FFFFFF;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB; font-weight: 600; width: 42%;\"\u003eSmart control\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB;\"\u003eOnboard smart touch display + smartphone app + web platform\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #F7FAFA;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB; font-weight: 600; width: 42%;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #E5E7EB;\"\u003eUp to 7 years parts and labour (Navien UK, MCS install)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"color: #008377; font-size: 18px; margin: 24px 0 10px 0; padding-bottom: 6px; border-bottom: 2px solid #008377CF;\"\u003eWhat's in the box (every variant)\u003c\/h3\u003e\n\u003cul style=\"padding-left: 22px; margin: 8px 0;\"\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eNavien PEM750 outdoor monobloc unit (capacity per selected variant)\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eRefrigerant circuit and integrated controls\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eManufacturer installation and commissioning documentation\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eNavien UK warranty registration card\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"color: #008377; font-size: 18px; margin: 24px 0 10px 0; padding-bottom: 6px; border-bottom: 2px solid #008377CF;\"\u003eWhat you'll also need (sold separately)\u003c\/h3\u003e\n\u003cul style=\"padding-left: 22px; margin: 8px 0;\"\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eDHW cylinder (heat-pump-suitable, indirect coil sized for low flow temperature)\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eIndoor hydraulic kit \/ wiring centre (Navien's dedicated wiring centre simplifies commissioning)\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eOutdoor wall bracket or floor stand\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eAnti-freeze valves on primary flow and return\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eMagnetic system filter on the primary return\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eBuffer tank if system water volume falls below Navien's minimum\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eCondensate drainage — piped to soakaway or gulley recommended\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"color: #008377; font-size: 18px; margin: 24px 0 10px 0; padding-bottom: 6px; border-bottom: 2px solid #008377CF;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails style=\"border: 1px solid #E5E7EB; border-radius: 4px; margin: 8px 0; overflow: hidden;\"\u003e\n\u003csummary style=\"cursor: pointer; background: #008377CF; color: #fff; padding: 10px 14px; font-weight: 600; list-style: none;\"\u003eWhich kW should I choose?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; background: #FFFFFF;\"\u003eChoose the variant that matches your \u003cstrong\u003ecalculated heat loss\u003c\/strong\u003e. As a rough guide: 4 kW for small well-insulated 1–2 bed homes; 6 kW for typical 2–3 bed homes; 8 kW for 3–4 bed semis and detached; 10 kW for larger 4–5 bed detached; 17 kW for very large or lightly-insulated properties. \u003cstrong\u003eAlways confirm with a proper heat loss survey\u003c\/strong\u003e — sizing by rule of thumb is the most common cause of poor heat pump performance.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #E5E7EB; border-radius: 4px; margin: 8px 0; overflow: hidden;\"\u003e\n\u003csummary style=\"cursor: pointer; background: #008377CF; color: #fff; padding: 10px 14px; font-weight: 600; list-style: none;\"\u003eIs R290 safe for a domestic installation?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; background: #FFFFFF;\"\u003eYes. R290 is widely used across Europe in domestic heat pumps and refrigeration. The refrigerant is \u003cstrong\u003esealed inside the outdoor unit\u003c\/strong\u003e, which sits outside the property. UK installation rules govern minimum siting clearances to ensure safety; a competent designer will ensure these are met.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #E5E7EB; border-radius: 4px; margin: 8px 0; overflow: hidden;\"\u003e\n\u003csummary style=\"cursor: pointer; background: #008377CF; color: #fff; padding: 10px 14px; font-weight: 600; list-style: none;\"\u003eWill my existing radiators work with the PEM750?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; background: #FFFFFF;\"\u003eIn most retrofit cases, yes — the PEM750's \u003cstrong\u003e75°C flow temperature\u003c\/strong\u003e means existing radiators sized for a gas boiler will usually deliver enough output without uprating. A heat loss survey identifies any coldest-rooms exceptions.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #E5E7EB; border-radius: 4px; margin: 8px 0; overflow: hidden;\"\u003e\n\u003csummary style=\"cursor: pointer; background: #008377CF; color: #fff; padding: 10px 14px; font-weight: 600; list-style: none;\"\u003eDo I need to be MCS-registered to install this?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; background: #FFFFFF;\"\u003eThe unit can be installed by any competent heating engineer, but to claim the \u003cstrong\u003eBoiler Upgrade Scheme grant\u003c\/strong\u003e and to activate the full 7-year Navien warranty, the install must be carried out by an MCS-certified installer. Quality Heating can introduce you to trade partners if needed.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #E5E7EB; border-radius: 4px; margin: 8px 0; overflow: hidden;\"\u003e\n\u003csummary style=\"cursor: pointer; background: #008377CF; color: #fff; padding: 10px 14px; font-weight: 600; list-style: none;\"\u003eHow loud is the outdoor unit?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; background: #FFFFFF;\"\u003eNavien quote a low-noise floor of \u003cstrong\u003e42 dB(A)\u003c\/strong\u003e, quieter than a typical gas-powered boiler. Sound power figures rise with capacity (larger units are inherently louder), but every variant is designed to meet MCS 020 boundary noise limits on a normal domestic install.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #E5E7EB; border-radius: 4px; margin: 8px 0; overflow: hidden;\"\u003e\n\u003csummary style=\"cursor: pointer; background: #008377CF; color: #fff; padding: 10px 14px; font-weight: 600; list-style: none;\"\u003eIs there a smart control included?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 16px; background: #FFFFFF;\"\u003eYes — every PEM750 includes a \u003cstrong\u003esmart touch display\u003c\/strong\u003e onboard, plus a dedicated smartphone app and web platform for schedules, monitoring and fault alerts. No extra Wi-Fi module needed.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Navien","offers":[{"title":"4kW","offer_id":65259554341213,"sku":"GPEM750004VGP01","price":3470.0,"currency_code":"GBP","in_stock":true},{"title":"6kW","offer_id":65259554373981,"sku":"GPEM750006VGP01","price":3700.0,"currency_code":"GBP","in_stock":true},{"title":"8kW","offer_id":65259554406749,"sku":"GPEM750008VGP01","price":3995.0,"currency_code":"GBP","in_stock":true},{"title":"10kW","offer_id":65259554439517,"sku":"GPEM750010VGP01","price":4650.0,"currency_code":"GBP","in_stock":true},{"title":"17kW","offer_id":65259554472285,"sku":"GPEM750017VGP01","price":5995.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/NavienBlackHeatPump.jpg?v=1784109130","url":"https:\/\/qualityheating.co.uk\/products\/navien-pem750-r290-monobloc-air-source-heat-pump-4-6-8-10-17kw-variant","provider":"AIZO Quality Heating","version":"1.0","type":"link"}