- Return air grills make howling sound
- Air return upstairs/downstairs w 2 hvac units
- Duct work with Swamp Cooler?
- Ductwork in basement
- converting gas baseboard to forced air heating & cooling?
- Need to make hole in top of trunk for new line
- AC not cooling
- new house new problems
- Another basement return question
- Does velocity in cold air return matter?
- Old Air Return/Vent Faceplates
- Sealing old stove exhaust in kitchen
- Vent attic of mobile home
- How to increase flow volume through 3 inch PVC pipe?
- need help with return duct
- Moving/rerouting an air return....
- attic ventilation for a vaulted ceiling
- The best way to vent a bathroom
- Another room above garage question
- Unused slab ducts
- Need more return air?
- Increasing Duxct Size?
- Exhaust odor in central air ducts
- Multiple bathroom fans to one termination cap
- installing heat vent
- New Construction-HVAC Ducting Condensation in Crawlspace
- Add vents or return?
- Air circulation needs help
- odor in the air from heat pump or ductwork?
- Return Air, Air Supply Vents, Filters
- Phony return duct
- Warm on top floor (4 story townhouse)
- CleanEffect/AccuClean Recall.
- amatuer needs help VENTILATION for barn project
- Solution to floor air return getting dirty quickly
- Will Air Purifiers Work?
- Best Location Return for AC
- Basic Duct Question
- How do you connect flexi-duct to flexi-duct
- exhaust fan for mutiple bathrooms
- 3 returns too much for main trunk size?
- Rectangular vent box
- looking for a low profile air duct solution
- How to create duct work from fiber board?
- Gas Dryer Venting Inadequate/Hazardous
- Bath fan vent in FL attic
- Attic Fan Useful if No A/C?
- Retrofitting wood plenum w/sheet metal duct...
- piece of ductwork in the attic
- I need a larger floor register
- Extending return duct
- Brilliant Invention Or Bad Idea
- where do I find the inlet on a furnace hvac system?
- Water flowing through air duct
- Bathroom Vent Fan Mounting
- damper help
- Ventless bathroom fan?
- Strange wall panel door in house - basement vent?
- transitions/reducers..help with lingo
- change of plans- adding new air return
- Dryer Venting
- Adding a whole house fan
- Object in cold air return duct
- Nutone Fan Rotation
- No return air on 2nd floor
- Adding media air cleaner to existing furnace
- Mice in flex ductwork!! Ugh!!
- Adding cold-air return to 2nd floor
- Removing an Exhaust Fan
- Is it expensive is it to add filtration to existing AC/Heat?
- time for remodel install of AC
- Adding a room in the garage. Need advice.
- AC Supply sizing question(s)
- Minimum gap
- Air Flow
- closing return
- Central Air Conditioning Odors
- Back Draft Damper - is it worth it?
- Ducts To Small For AC
- Room under the attic is hotter
- Insulation for duct pipe to reduce noise?
- attic ventilation for a whole house fan
- Redoing furnace.
- Duct Question (with pictures!)
- Asking for help in Designing Air Returns (w. Diagram)
- ductwork in an outside wall
- Looking for custom floor register extension
- A few duct questions
- Insufficient duct work/returns=coil damage?
- Duct size
- Dampers for Range Hood Ventilation
- Attic Fan Noise
- Dryer Duct Problem, Birds won't find another home
- # ducts for 3 ton unit
- Filter not dirty after 3-4 months?
- Am I getting conned?
- air duct cleaning - question
- where to install an air cleaner?
- Bird in Dryer Vent Hose
- Tying into existing Cold Air Return
- Dryer Vent in Roof
- Please recommend book for diy installation of central air and ductwork
- Reducing noise from forced air unit
- redoing my ductwork
- Flex vs Sheet Metal Ducting
- Air Exchanger / Filter
- HVAC duct work question
- Air Cleaners
- Rerouting some overhead ducting
- B-Vent
- Spliting one duct connection
- Home inspection yielded inefficient ducts/asbestos
- What size register for 6" round duct?
- Floor Vent Registers
- OK to cut hole in rim joist (parallel side)?
- Honeywell Y8150 Whole House Ventilation system
- Add New Return
- Trion Electronic Air Cleaner
- Branches off end of trunk?
- Replacing 2 Insufficient bathroom vents
- duct reduction
- Range Hood sucking hot air out.
- Whole House Fans
- all rooms are not heated/cooled equally
- Attic Vent leak problem.
- chase placement
- Heating a new room
- adding duct work/vents
- Duct sizing
- Main Return Plenum Size....
- Heat pump/duct work replacement
- Need some pointers
- Sunroom - multiple airflow/tempurature issues
- Duct Size Req'd for Range Venting
- Noisey ducts
- Suppliers
- Forced Air Heat/AC Question
- Replacing ducts w/ smaller size (or lower profile)?
- duct fittings
- Basic ductwork connections question (3.25 x 10 galvanized stack)
- ...cold air return!
- How effective is UV light and a 4" filter?
- missing return ducts upstairs
- How much space does an A/C intake vent need?
- filling bathroom exhaust vent question
- Plenium sizing
- After "cleaning" dryer flap doesn't even open!
- New Ductwork for room above garage
- Help, replacing 3 ton heat pump with 4 ton and 3 ton airhandler with 5 ton
- Ductwork for finished attic...
- Bathroom vent trap door keeps flapping and banging. How to Fix?
- Adding additional duct/vent - splitting existing one
- bathroom vent fan suggestions
- duct size reduction
- Dryer Vent through concrete block..
- Dryer Duct Problem -- Suggestions?
- cold air return grille near ceiling
- How to connect vent duct to roof jack?
- Bathroom vent...
- Cleaning the duct works...
- Does it matter where cold air return connects
- moving cold air return in the living room
- refinishing cast iron grates
- Help!!! Basement bathroom exhaust fan
- heating system
- Dryer vent length limitations
- dryer lint in attic
- Duct compatability--aluminum & galvanized
- New Product for dryer vent
- bathroom exhaust and whole house fan share exhaust vent?
- new air return size
- Circulating air from room with fireplace to other rooms.
- One Duct / Two Vent Fans (Kitchen/Bathroom)
- round duct equivalent of 3 1/4" x 10"?
- New Dryer Duct Condensation
- Dryer Vent
- Return duct - Help calculate if too small
- Duct cleaning?
- Replacing return air grill
- Duct Insulation
- replacing ductwork
- Ductwork
- wages in different cities or to
- Wet Ceiling After Showering-Condensation Woes
- Roof Cap for 1200cfm 10 inch duct from range top?
- air infiltration in bathroom exhaust fan
- Butterfly Damper
- gas pressure
- Do you really need returns in a Basement?
- Cooler air upstairs in winter.
- Tapping into duct, how much loss?
- Sizing return vent in floor?
- Several dryer vent questions
- Bathroom Exhaust Fan
- Another Register in a Basement Question?
- Starting Collar Install
- Need help installing new ducts & registers off plenum
- Going from unvented to vented?
- Vent a Range Hood Down?
- HRV vs. Building inspector
- Basement Bathroom
- Venmar humidity control not working
- CAn I turn off Trane Clean Effects?
- Dust Summary
- Duct silencers
- HRV installation question
- Duct clearance to wood
- HVAC Returns- Any Rules to Location?
- Basement Return: Will This Work?
- Moving a register
- adding returns to rooms
- 2nd floor bath little to no heat
- Basement Exhaust Question
- RETURN vent in eclosed furnace room
- Another basement return air question
- round 6 inch duct pipe
- Can I force air into a cold air return?
- Moving Return Air Vent
- Forced air duct heating floorboards at entry - a waste?
- Adding take-offs on main trunk
- Adding a register in a basement?
- Adding new return?
- add vent to furnace room?
- Zone Design Questions
- Added new duct to air handler
- Humidification and basement zone
- flex and air return placement questions
- Basement Adding Supplies & Return
- asbestos
- un even heating
- What to do about cold floors
- installing a heat register in basement duct
- Modify existing duct to hide it
- Rectangular vent duct?
- return duct-- and wall anchoring
- return issue?
- Adding Zones To an HVAC System
- Trunk questions
- Bathroom Exhaust Fan
- Furnace Exhaust - BIG fire hazard - help
- Step by step - cutting into trunk
- Return duct question
- Can I move my return?
- duct system performance
- Return question
- Cold Room
- New cold air return in basement.
- Shared Range and Bathroom Vent?
- Heat duct to garage
- wall cap damper