1394 Insulation in floors over unheated areas
1395 Reducing moisture
1396 Exhaust fan conditions
1397 Cold-side ducts not insulated
1398 HRV intake and exhaust locations
1399 Furnace duct/HRV connection |  1400 HRV exhaust grille locations
1401 Flow collars and balancing dampers
1402 HRV not interlocked with furnace fan
1403 Filters dirty or missing
1404 HRV core missing or dirty
1405 Trap in condensate drain |
