{"product_id":"vectaire-midi-mvhr-whole-house-ventilation-with-heat-recovery-unit","title":"Vectaire Midi MVHR Whole House Ventilation with Heat Recovery Unit","description":"\u003cdiv style=\"font-size: 16px; font-family: Georgia, 'Times New Roman', serif; color: #1a1a1a; max-width: 900px; margin: 0 auto; line-height: 1.7;\"\u003e\n\u003c!-- Intro --\u003e\n\u003cp style=\"font-size: 1.08em; margin-bottom: 1.4em;\"\u003eThe \u003cstrong\u003eVectaire Midi\u003c\/strong\u003e is a \u003cstrong\u003ewhole-house mechanical ventilation with heat recovery (MVHR)\u003c\/strong\u003e unit engineered for residential properties up to \u003cstrong\u003e170 m²\u003c\/strong\u003e. Manufactured in the UK, it delivers \u003cstrong\u003eup to 94% heat exchange efficiency\u003c\/strong\u003e — one of the highest in its class — while drawing as little as 2.2 W at minimum speed. Whether you are building new or retrofitting, the Midi provides continuous \u003cstrong\u003efresh, filtered air\u003c\/strong\u003e throughout your home, recovering the warmth from stale outgoing air before it is exhausted, keeping energy bills low and indoor air quality high all year round.\u003c\/p\u003e\n\u003c!-- Stat Strip --\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 1.8em;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #fff; border-radius: 6px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 1.8em; font-weight: bold;\"\u003e94%\u003c\/div\u003e\n\u003cdiv style=\"font-size: 0.82em; margin-top: 4px;\"\u003eHeat Exchange Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #fff; border-radius: 6px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 1.8em; font-weight: bold;\"\u003e101 l\/s\u003c\/div\u003e\n\u003cdiv style=\"font-size: 0.82em; margin-top: 4px;\"\u003eMax Airflow Capacity\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #fff; border-radius: 6px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 1.8em; font-weight: bold;\"\u003e170 m²\u003c\/div\u003e\n\u003cdiv style=\"font-size: 0.82em; margin-top: 4px;\"\u003eMax Property Size\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #fff; border-radius: 6px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 1.8em; font-weight: bold;\"\u003e0.50\u003c\/div\u003e\n\u003cdiv style=\"font-size: 0.82em; margin-top: 4px;\"\u003eSFP W\/l\/s (min)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #fff; border-radius: 6px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 1.8em; font-weight: bold;\"\u003e5 yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 0.82em; margin-top: 4px;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Callout: Installer Note --\u003e\n\u003cdiv style=\"border-left: 4px solid #c0392b; background: #fdf2f2; padding: 14px 18px; border-radius: 4px; margin-bottom: 1.4em;\"\u003e\n\u003cstrong style=\"color: #c0392b;\"\u003eInstaller Note:\u003c\/strong\u003e Sufficient access for safe maintenance or removal following installation \u003cstrong\u003emust\u003c\/strong\u003e be provided for this product. A minimum 200 mm clearance each side of the cabinet is required for access to the motors. This unit must be installed by a competent person and commissioned in accordance with Building Regulations Part F.\u003c\/div\u003e\n\u003c!-- Callout: Compatibility --\u003e\n\u003cdiv style=\"border-left: 4px solid #e67e22; background: #fef9f0; padding: 14px 18px; border-radius: 4px; margin-bottom: 1.4em;\"\u003e\n\u003cstrong style=\"color: #e67e22;\"\u003eCompatibility:\u003c\/strong\u003e The Midi is available in universal handing (without humidistat) or with left\/right drain humidistat versions. Check ductwork handing requirements before ordering. The humidistat handing direction is factory-set; confirm your layout before purchase.\u003c\/div\u003e\n\u003c!-- Callout: Info --\u003e\n\u003cdiv style=\"border-left: 4px solid #008377CF; background: #e6f4f3; padding: 14px 18px; border-radius: 4px; margin-bottom: 1.8em;\"\u003e\n\u003cstrong style=\"color: #005c54;\"\u003eSAP PCDB Listed\u003c\/strong\u003e — the Midi is fully listed on the SAP Product Characteristics Database, making it straightforward to use in energy calculations for Building Regulations compliance. Specifications available at vectaire.co.uk\/downloads.\u003c\/div\u003e\n\u003c!-- Feature Grid --\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; padding: 10px 16px; border-radius: 4px 4px 0 0; font-weight: bold; font-size: 1.02em; margin-bottom: 0;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; margin-bottom: 1.8em; padding: 14px; background: #f0faf9; border: 1px solid #c8e6e3; border-top: none; border-radius: 0 0 4px 4px;\"\u003e\n\u003cdiv style=\"background: #fff; border: 1px solid #c8e6e3; border-radius: 6px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eCounter-Flow Heat Exchanger\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 0.93em;\"\u003eThe Midi uses a \u003cstrong\u003ecounter-flow heat exchanger\u003c\/strong\u003e that achieves up to \u003cstrong\u003e94% thermal efficiency\u003c\/strong\u003e — recovering warmth from stale exhaust air and transferring it to the incoming fresh supply without the two airstreams ever mixing. This dramatically reduces the heating energy needed to bring incoming air up to room temperature.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff; border: 1px solid #c8e6e3; border-radius: 6px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eAutomatic Summer Bypass\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 0.93em;\"\u003eWhen outdoor temperatures are pleasant, the \u003cstrong\u003eautomatic summer bypass\u003c\/strong\u003e routes incoming air around the heat exchanger entirely, bringing \u003cstrong\u003ecooler fresh air\u003c\/strong\u003e directly into the home. The bypass activates and deactivates automatically based on adjustable internal and external temperature setpoints — no manual intervention needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff; border: 1px solid #c8e6e3; border-radius: 6px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eIntegral Frost-Stat Protection\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 0.93em;\"\u003eThe \u003cstrong\u003eintegral frost-stat\u003c\/strong\u003e proportionally reduces the intake motor speed as outside temperatures fall between +3°C and −8°C, preventing ice formation on the heat exchanger core. This is a standard feature, protecting the unit and maintaining safe operation through UK winters without requiring an additional external controller.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff; border: 1px solid #c8e6e3; border-radius: 6px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eLow Energy EC Brushless Motors\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 0.93em;\"\u003eFitted with \u003cstrong\u003eelectronically commutated (EC) brushless motors\u003c\/strong\u003e with forward curved impellers and direct drive, the Midi draws just 2.2 W at 20% speed and 120 W at full speed. The \u003cstrong\u003especific fan power (SFP) is as low as 0.50 W\/l\/s\u003c\/strong\u003e, comfortably meeting Building Regulations targets for energy-efficient ventilation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff; border: 1px solid #c8e6e3; border-radius: 6px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eVariable Speed Control\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 0.93em;\"\u003eEach motor has \u003cstrong\u003eindependent variable speed adjustment\u003c\/strong\u003e for trickle, boost, and purge modes, set at installation to match the specific ductwork design. \u003cstrong\u003eBoost speed\u003c\/strong\u003e can be triggered by a 230V switched live from a light switch, remote humidistat (DRH240), PIR sensor (PIRFF), thermostat (THM), or pull cord. The boost over-run timer is adjustable from 0 to 90 minutes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff; border: 1px solid #c8e6e3; border-radius: 6px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eThermo-Acoustic Lining\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 0.93em;\"\u003eThe compact steel casing is lined with \u003cstrong\u003ethermo-acoustic insulation\u003c\/strong\u003e, providing both noise attenuation and thermal performance. At 80% speed (79 l\/s) the \u003cstrong\u003ebreakout sound pressure is just 29.9 dBA at 3 m\u003c\/strong\u003e, making the Midi suitable for installation in lofts, cupboards, or utility rooms adjacent to living spaces. The unit weighs 24 kg.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff; border: 1px solid #c8e6e3; border-radius: 6px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eFlexible Installation\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 0.93em;\"\u003eDesigned for \u003cstrong\u003evertical installation in lofts or cupboards\u003c\/strong\u003e, with a wall fixing bracket supplied. The universal handing models (without humidistat) can be orientated left or right on site, giving installers flexibility. The unit can also accommodate 0-10V connections for BMS integration, CO₂ detectors, or home automation systems — factory-set options available.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff; border: 1px solid #c8e6e3; border-radius: 6px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eEasy Filter Access \u0026amp; QR Diagnostics\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 0.93em;\"\u003eStandard \u003cstrong\u003edisposable G3 filters\u003c\/strong\u003e are easily accessible for routine maintenance. The unit records \u003cstrong\u003erun-time and power outage counters downloadable via QR code\u003c\/strong\u003e, making service visits straightforward. Optional integral LCD or remote LCD commissioning units are available for accurate airflow balancing at installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Spec Table --\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; padding: 10px 16px; border-radius: 4px 4px 0 0; font-weight: bold; font-size: 1.02em;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-bottom: 1.8em; font-size: 0.93em;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600; width: 42%;\"\u003eMax Airflow Capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003e101 l\/s (364 m³\/hr)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eAirflow at 50Pa\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003e95 l\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eHeat Exchange Efficiency (max)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003e94% (SAP 10: Kitchen + 1 wet room)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eSpecific Fan Power (SFP)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003eDown to 0.50 W\/l\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eTotal Power — 100% \/ 20%\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003e120 W \/ 2.2 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eOperating Current\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003e1.21 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eAirflow Speeds (l\/s)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003e101 \/ 79 \/ 58 \/ 36 \/ 14 (100–20%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eBreakout Sound Pressure @ 3m\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003e33.9 dBA @ 100% · 19.7 dBA @ 20%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eMax Operating Temperature\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003e60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eFrost-Stat Activation Range\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003e+3°C to −8°C (outside temperature)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eBoost Over-Run Timer\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003e0–90 minutes (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eRemote Purge Timer (optional)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003e0–250 minutes (factory preset: 15 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eFilter Grade\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003eG3 (disposable, easily accessible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eDimensions (W × H × D)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003e600 × 555 × 382 mm (approx)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003e24 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eDuct Connection Diameter\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003eØ125 mm (four spigots)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eCasing\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003eSteel sheet, epoxy paint finish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eHeat Exchanger Type\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003eCounter-flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eMotor Type\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003eEC brushless, direct drive, forward curved impellers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003e230V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003e5 years (1 year parts \u0026amp; labour, 4 years parts only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eCertifications\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003eSAP PCDB Listed · CE Marked · ISO 9001:2015 · ISO 14001:2015 · EU RoHS · IEC60335-2-80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eSuitable For\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003eAny domestic wet room installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3; font-weight: 600;\"\u003eSound Testing Standard\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; border: 1px solid #c8e6e3;\"\u003eBS EN ISO 3743-1:2010 (independently tested)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c!-- Models Available --\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; padding: 10px 16px; border-radius: 4px 4px 0 0; font-weight: bold; font-size: 1.02em;\"\u003eModels Available\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #c8e6e3; border-top: none; padding: 16px; background: #f0faf9; border-radius: 0 0 4px 4px; margin-bottom: 1.8em; font-size: 0.93em;\"\u003e\n\u003cul style=\"margin: 0; padding-left: 1.4em; line-height: 2;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eWHHR-Midi\/BY\u003c\/strong\u003e — Bypass, universal handing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWHHR-Midi\/LBYH\u003c\/strong\u003e — Bypass, left drain, humidistat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWHHR-Midi\/RBYH\u003c\/strong\u003e — Bypass, right drain, humidistat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMidi-BY+LCD\u003c\/strong\u003e — Bypass, universal, integral LCD commissioning unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMidi-BY+LCDLH\u003c\/strong\u003e — Bypass, integral LCD, left drain, humidistat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMidi-BY+LCDRH\u003c\/strong\u003e — Bypass, integral LCD, right drain, humidistat\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- FAQ --\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; padding: 10px 16px; border-radius: 4px 4px 0 0; font-weight: bold; font-size: 1.02em;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #c8e6e3; border-top: none; border-radius: 0 0 4px 4px; margin-bottom: 1.8em; overflow: hidden;\"\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eWhat size property is the Vectaire Midi suitable for?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; background: #fff; font-size: 0.93em;\"\u003eThe Midi is rated for residential properties up to \u003cstrong\u003e170 m²\u003c\/strong\u003e. With a maximum airflow of 101 l\/s, it comfortably serves homes with a kitchen plus up to four or five additional wet rooms under SAP 10 calculations. For larger properties (up to 250 m²), the Vectaire Maxi is recommended; for properties up to 400 m², consider the Maxi Plus BY.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eHow does the summer bypass work on the Midi?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; background: #fff; font-size: 0.93em;\"\u003eThe \u003cstrong\u003eautomatic summer bypass\u003c\/strong\u003e monitors both internal and external temperatures continuously. When both reach adjustable setpoints — indicating warm, pleasant outdoor conditions — the bypass damper diverts incoming air around the heat exchanger, delivering cooler fresh air directly into the home. This prevents the home from being warmed unnecessarily in summer, without any manual switching by the occupant.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eCan the Midi be integrated with a smart home or BMS?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; background: #fff; font-size: 0.93em;\"\u003eYes. The Midi supports \u003cstrong\u003e0-10V signal connections\u003c\/strong\u003e (factory-set) for integration with a Building Management System (BMS) for remote motor shut-off, a CO₂ detector for demand-controlled ventilation, or a home automation system. A relay output for an external pre-heater is also available. The optional \u003cstrong\u003eholiday mode\u003c\/strong\u003e reduces fan speeds to 50% of trickle when the property is unoccupied.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eHow quiet is the Vectaire Midi in operation?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; background: #fff; font-size: 0.93em;\"\u003eThe Midi is one of the quieter units in its class. At 100% speed (101 l\/s) the \u003cstrong\u003ebreakout sound pressure level is 33.9 dBA at 3 m\u003c\/strong\u003e; at 80% (79 l\/s) this falls to \u003cstrong\u003e29.9 dBA\u003c\/strong\u003e. At typical trickle speeds the unit is virtually inaudible from an adjoining room. All acoustic data is independently tested to BS EN ISO 3743-1:2010. For very noise-sensitive installations, an optional acoustic top box is available from Vectaire.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eDoes the Midi comply with UK Building Regulations?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; background: #fff; font-size: 0.93em;\"\u003eYes. The Midi is \u003cstrong\u003eSAP PCDB listed\u003c\/strong\u003e and complies with Building Regulations Part F (ventilation) and Part L (energy efficiency). The SFP of 0.50 W\/l\/s meets the enhanced energy-saving requirements. It is CE marked, EU RoHS compliant, and manufactured in the UK to ISO 9001:2015 quality and ISO 14001:2015 environmental standards.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eHow often do the Midi's filters need replacing?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; background: #fff; font-size: 0.93em;\"\u003eThe standard \u003cstrong\u003eG3 disposable filters\u003c\/strong\u003e should typically be replaced every 6 to 12 months, depending on local air quality. Properties near busy roads or in urban areas may need more frequent changes. The filters are easily accessed from the front of the unit without tools. An annual service check is recommended to inspect the heat exchanger, verify balance, and replace filters — run-time counters are downloadable via QR code to assist maintenance planning.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Vectaire","offers":[{"title":"Default Title","offer_id":64691537903965,"sku":"WHHR-Midi-by-lcd","price":1995.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/VectaireMidiMVHRWholeHouseVentilationwithHeatRecoveryUnit.webp?v=1778757569","url":"https:\/\/qualityheating.co.uk\/products\/vectaire-midi-mvhr-whole-house-ventilation-with-heat-recovery-unit","provider":"AIZO Quality Heating","version":"1.0","type":"link"}