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House Size & No. of HRV Units

18-03-2010 10:49PM

#1

YourAverageJoe

Closed Accounts Posts: 136 ✭✭

Join Date: March 2008

Posts: 91

Am pricing HRV for a 2970 sq ft house. Some companies are telling me i need wo units and some saying one unit. Anyone know about the sizing?

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Comments

#2 19-03-2010 08:54AM

Leadership

Closed Accounts Posts: 457 ✭✭

Join Date: May 2008

Posts: 451

Basically companies that are advising two units do not have larger or higher output units in their product portfolio and companies with one unit have a device.

Do check the output of the units to ensure it has the capacity for your home size. Ask the companies to show the maths behind their assumptions.

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#3 19-03-2010 09:04AM

onefinemorning

Registered Users, Registered Users 2 Posts: 52 ✭✭

Join Date: December 2009

Posts: 45

HRV sizing is based on the volume of the house not the sq m. A particular HRV unit can handle a certain volume of air (or m3/hr). Once you know the overall m3 of your house then you will know how many units you need

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