Upgrades and add-ons Times change and so can your ventilation, heating and cooling requirements! Maybe you’ve extended your house since you first installed your DVS® , or maybe summers are too hot when all the doors and windows are closed. If so, remember that you can upgrade your DVS® as your needs change (if applicable to your DVS® model), by adding solutions such as:
For advice and information on upgrading your existing system, please call 0800 387 387 or use our online form.
