Titon has introduced the HRV Cool Plus, a matched cooling module for its mechanical ventilation with heat recovery (MVHR) systems, which the company says provides filtered and tempered air during periods of warm weather1. The launch was announced in a company article published on 6 August 20241.
The module fits on top of an MVHR unit. Titon states that an integrated cooling system assists in removing heat from a dwelling and can enhance MVHR performance by pre-cooling incoming fresh air during warmer months1. MVHR systems recover heat from extract airflow in winter and include a summer bypass to mitigate heat gains, but Titon notes that warm air can still enter dwellings during summer, and that a cooling module gives more control over indoor temperatures1.
The company places the product in the context of Approved Document Part O (ADO), released in June 2022, which addresses overheating in new dwellings where people sleep overnight. Titon states that ADO does not affect pre-existing or commercial buildings1.
"ADO states a preference for passive ventilation, if possible, but once natural ventilation solutions cannot be applied, then mechanical ventilation will be required."
Titon also describes a change in TM59, under which required dwelling rooms will no longer exceed a fixed threshold of 26°C for more than 3% of occupied hours, replacing adaptive thermal comfort1. ADO sets out two compliance routes: a simplified method and thermal dynamic modelling1. Titon cites an estimate that over 4,500 people died in the UK in 2022 due to high temperatures, the largest on record in recent years1.
| Item | Detail as given by Titon |
|---|---|
| Product | HRV Cool Plus, matched cooling module |
| Fits | On top of an MVHR system |
| Function | Filtered and tempered air in warm weather; pre-cools incoming fresh air |
| Regulation context | Approved Document Part O, June 2022 |
| Threshold cited | 26°C not exceeded for more than 3% of occupied hours |
Titon says the latest Approved Document F (means of ventilation) and Approved Document L (conservation of fuel and power in existing dwellings) mean a continuous mechanical ventilation system is often required1. The company also offers a CIBSE-approved CPD session on overheating1. Pricing, availability and warranty terms for the HRV Cool Plus have not been reported1.
Why it matters for households
Overheating is now a regulated concern in new-build homes, not only a comfort issue, and the rules apply to rooms used for sleeping overnight1. For a household, the practical question is how a home stays within the 26°C threshold during warm spells without relying on open windows, which can admit noise, pollution and solar gain1. A cooling module added to an MVHR system works with the ventilation already installed rather than as a separate cooling appliance, and it pre-cools incoming air while the system continues to recover heat in winter1. That keeps ventilation, filtration and tempering within one system, which bears on how independently a home can manage its indoor conditions as summers warm and dwellings become more airtight1. The article does not give running costs, energy use or performance figures for the module, so its effect on a household's energy use has not been reported1.
What happens next
Titon states that it offers a CIBSE-approved CPD on overheating, with enquiries directed to marketing@titon.co.uk1. No installation dates, availability dates or further product details are given1. Households wanting to know how MVHR works alongside insulation and glazing measures can read the site's guide to MVHR.