Ventilation & MVHR in Sligo
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Sligo centres on Sligo Town, which has a mix of Victorian town-centre properties, 1960s-80s estates, and modern development around the IT Sligo campus area. Strandhill and Rosses Point have coastal properties with tourist and residential mix. Rural Sligo has traditional farmhouses and self-builds. The Ox Mountains and Ben Bulben area have exposed upland properties.
Moderate to high rainfall (1,000-1,200mm). Atlantic influence with significant wind exposure along the coast. Milder coastal winters but colder in the uplands. Salt air affects coastal properties. Garavogue River flooding affects parts of Sligo Town.
Ventilation & MVHR in Sligo: Local Insights
Sligo centres on Sligo Town, which has a mix of Victorian town-centre properties, 1960s-80s estates, and modern development around the IT Sligo campus area. Strandhill and Rosses Point have coastal properties with tourist and residential mix. Rural Sligo has traditional farmhouses and self-builds. The Ox Mountains and Ben Bulben area have exposed upland properties.
Moderate to high rainfall (1,000-1,200mm). Atlantic influence with significant wind exposure along the coast. Milder coastal winters but colder in the uplands. Salt air affects coastal properties. Garavogue River flooding affects parts of Sligo Town.
Sligo has a moderate property market. IT Sligo (now ATU) drives rental demand. The Strandhill area has seen significant development. Contractor availability is moderate.
SEAI Grants May Be Available
Some ventilation & mvhr work may qualify for SEAI grants. Visit HomeEnergyGuide.ie to check eligibility and amounts.
SEAI Grants May Apply
Some ventilation & mvhr work qualifies for SEAI grants of up to €8,000 or more. Check eligibility and current grant amounts on our energy guide.
Check SEAI Grants on HomeEnergyGuide.ieVentilation & MVHR Costs in Sligo
Typical costs for ventilation & mvhr in Sligo (prices may vary ):
| Service | Typical Cost | Notes |
|---|---|---|
| MVHR system (new build) | €3,600 | €6,300 | Property size, ductwork complexity |
| MVHR system (retrofit) | €4,500 | €8,100 | Existing structure, access |
| Demand-controlled ventilation | €1,800 | €3,600 | Number of units |
MVHR costs depend on the brand and model (Zehnder, Vent-Axia, Beam, and Daikin are common in Ireland), the size of your home (determining the unit capacity), and whether it is a new build (ducting installed during construction) or a retrofit (ducting must be routed through an existing house, which is significantly more complex and expensive). Retrofit MVHR is typically 40-60% more expensive than new build installation due to the difficulty of running ducts through finished ceilings and walls. Demand-controlled and positive input systems are considerably cheaper.
Areas We Cover in Sligo
Ventilation & MVHR FAQs for Sligo
An MVHR system costs €4,000 to €7,000 in a new build (where ducting is installed during construction) and €7,000 to €12,000 in a retrofit (where ducting must be routed through an existing house). The cost depends on the brand, unit capacity, and the complexity of the duct layout. Demand-controlled ventilation (DCV) costs €1,500 to €3,000. Positive input ventilation (PIV) costs €500 to €1,500.
In a well-insulated, airtight home (air permeability below 5 m³/hr/m²), MVHR is essential for maintaining healthy indoor air quality while recovering up to 90% of heat that would otherwise be lost. It prevents condensation, mould, and stuffy air. In a leaky, poorly insulated home, MVHR is not cost-effective because air enters through gaps rather than through the heat exchanger. For these homes, demand-controlled ventilation or PIV is a better starting point.
Filters should be replaced every 6 to 12 months (more frequently if you live near a busy road or in a dusty area). The heat exchanger should be cleaned annually. Ducts should be inspected and cleaned every 3 to 5 years. Annual professional servicing costs €100 to €200. Most filter replacements are straightforward enough to do yourself, keeping ongoing costs low.
A properly installed and commissioned MVHR system operates at 25 to 30 decibels on normal speed, which is quieter than a whisper and virtually inaudible in a furnished room. Noise problems are almost always caused by poor installation: undersized ducts, uninsulated duct runs, the unit mounted directly on joists without vibration isolators, or incorrect fan speed settings. Insist on proper commissioning.
A bathroom extractor fan removes moist air from one room and expels it outside, losing all the heat it contains. MVHR is a whole-house system that continuously ventilates every room while recovering 85-90% of the heat from the extracted air. MVHR also supplies filtered fresh air, removing pollen, dust, and pollution. It is a fundamentally different level of ventilation and air quality.
Yes. Condensation and mould in insulated homes are caused by trapped moisture that has no way to escape. MVHR continuously removes moist air from kitchens and bathrooms and replaces it with dry, filtered fresh air. In homes where condensation and mould have been a persistent problem after insulation, MVHR almost always resolves the issue completely.