Hook up hrv to furnace

Can HRV air be ducted into the furnace?

With a dedicated HRV exhaust and using the furnace for HRV supply you can duct into the furnace return before the furnace filter. I have heard some concern about cold HRV air going through the furnace and potentially causing heat exchanger problems. I cant say if this is valid, you could always tie in the HRV supply above the furnace.

How do I install an HRV system?

With a simplified HRV install you will need to have it interlocked with the furnace fan. The Dehumidistat will allow you to select your desired humidity and then bring on the HRV and furnace fan to accomplish this.

Do you need an interlock between HRV and furnace fans?

With an exhaust-ducted system, an electrical interlock between the HRV/ERV fans and the furnace fan is an option. With an interlock, the system suffers from the same energy-penalty problem as a simplified system. If the fans aren’t interlocked, the ventilation system uses less energy.

Can I add an HRV fan to an existing home?

We have added a number of HRVs to existing homes and typically would exhaust from the furnace return and supply through the furnace supply. In new construction it is nice to use the HRV in place of individual bath fans, if you can do this on your existing house, great.

Should HRV be ducted into the return air plenum?

HRV - both supply and exhaust ducted to furnace. Is this a good idea? I have occasionally been asked my opinion about a particular way to install a ventilation system (HRV - Heat Recovery Ventilator) that is considered acceptable in Ontario: Ducting both the supply and the exhaust runs of an HRV into the return air plenum of a forced air furnace.

What happens when HRV fan is on but furnace is not?

When the furnace is operating, fresh ventilation air is distributed through the HVAC system’s supply ducts. But when the HRV/ERV fans are operating and the furnace isn’t, distribution gets quirky, and the fresh air enters the house through the HVAC system’s returnair grilles.

Should HRVs have dedicated ductwork for lower ventilation?

My understanding is that HRVs should have dedicated ductwork sized specifically for lower ventilation flows. The system should also be balanced and commissioned. However I’ve been seeing HRVs tied into Force Air Systems.

How does the HRV work?

The HRV is a VanEE 190H with a wall humidity control and timers in the bathrooms and kitchen. The HRV runs 24/7 on low as it exhausts stale air from the wet areas and brings in fresh semi-warm air into the furnace and then the furnace fan (which is required to be always on) runs on high as it blows the fresh air through the house via the registers.

Should I install an HRV system in my home?

Consider installing an HRV system if the air smells stale and polluted, or if your home gets too hot in the summer and uncomfortably cold during winter. Additionally, if your energy bills are high because your HVAC system is working too hard to maintain a consistent temperature, an HRV might be right for you.

What is an HRV ventilation system?

HRVs, also known as heat recovery ventilators, are essentially balanced ventilation systems with a unique heat-exchanger core. The system introduces fresh, outdoor air into your living space like any ordinary ventilation system while removing the stale indoor air.

Do I need a bath exhaust fan with HRV ductwork?

However, a few HRV manufacturers and some builders provide different advice; they advise that even when a bathroom has an exhaust grille connected to HRV ductwork, it’s still important for every such bathroom to have a separate bath exhaust fan. Which approach makes the most sense? Advice from Venmar

Do you keep the Panasonic fan when installing HRV?

And although i plan on intalling the HRV soon, i might keep the panasonic fan just to get a little 5-20 minute boost during summer time, where humidity is high and the lost energy is lower . I have the exhaust fan installed with a 5-10-20-30 timed switch with is simple and works really well during high humidity season ( mainly through summer )