- Test for 90% furnace
- Heat pump/gas furnace temperature splits
- Vent flashing
- Romex through Furnace cabinet.
- See photo...FLOAT SWTICH QUESTION FOR THE HVAC EXPERTS
- Fire blocking around boiler vent
- quality install
- CSST in return
- AHRI Website.
- Condensate drainage to sump pit
- If you see flame-what could this be?
- Singer condensing unit
- Humidifier ID
- Sizing return air paths (undercut doors, etc.)
- Sizing heat source for radiant floor heat
- Mystery Black Box
- Mildew associated with Radiant ceiling heat
- Disconnected electronic damper
- Vent configuration
- Permanent filter
- Salt Air and the heat pump
- Here's a good one
- Dryer Vent?
- Combustion Air and M1703.2.1
- Gas burning furnace flue height in nyc
- Bad Heat exchanger ?
- Grimsby furnace age
- range hood duct insulation
- Age of Amana Condensing unit
- Condensate and A/C drain to the exterior
- Furnace not level
- Flash freeze "A" coil
- 1938 Boiler Pic
- Coleman Manufacture Date?
- Old gas floor furnace
- New A/C Compressor w/Old Air Handler
- Back drafting
- termination cap for an electric clothes dryer on a flat roof
- Proper material for furnace exhaust venting
- WATER HEATER AND BOILER VENT PIPES
- Air condition line
- Scorch at oil furnace
- Hot water line to humidifier
- Radiant heat installation
- new member
- Furnace vent initial rise
- how hot is too hot
- Furnace Closet
- Cellular core abs
- Any thoughts on this
- 3 Ton A/C in 2,000 Sq. Ft. House
- More white powder in the gas vent
- Can boiler pipes get hot enough to cause a fire if touching?
- Combustion air intake location
- Furnace in the kitchen
- New one...what is this ?
- Condensate drain lines connected together?
- Boiler turns on and off often??? What will cause this?
- Why is this wrong?
- A/C compressor breaker/fuse
- Help to identify
- A/C install
- Cracked Refractory Tile
- Improper sidewall vent
- Overhead oil delivery line.
- Venting to patio
- condensate drains through bsmt floor
- Help with Boiler age
- basement floor drain for propane leaks?
- Water heater venting
- What's this wire for?
- Here's another one...
- Return air vent
- draft barrier
- Two stage furnace
- AquaTherm Furnace
- Geo-Thermal Heating and Cooling
- Teledyne Laars Combo Water Heater/Boiler Information
- Air handler emergency overflow
- Clearance requirements
- CO or Cold Air Return?
- Return air directly beside furnace combustion chamber
- Gizmo
- Open Air Plenum
- Condensate drain line/Furnace Vent
- duct board; combustible material?
- Furnace and Water Heater Venting
- rusty secondary pan
- Corrosion/Deposit at Trane Furnace
- How do you check an ac unit?
- No overflow drain - just cutoff switch
- Condensate Line or Drip Pan
- Need advise on Oil Tank Language
- Supply air to bedroom closets
- Flashing around fireplace vent
- Two evaporator coils, one condenser
- Unusual surface rusting
- American Standard Bolier Age Help
- black rubber tubing on baseboard heat
- nice job
- 4-ton condensor, compressor stolen
- HVAC standards (2 story home in NC) question
- Inline Vent Connectors
- Condensate trap too big?
- Size of furnace
- Is a back flow preventer required on Forced Hot Water boiler systems
- Radiant heating
- Life span of an electric furnace ?
- condo return air space
- NREL invents new Swamp Cooler
- Surround sound in the HVAC ducts
- Condensate trapping for Fedders wall-mount electric furnace
- Clearance to Combustibles
- Insulation on Pressure flue in attic?
- PVC exhaust
- high efficiency pvc vent underground
- Supply register on shower wall
- Snow Melt Boiler On Exterior
- Dryer Vent Systems
- condensate hoses in high efficiency furnace
- Rinnai toyostove in bedroom
- Rusty heat ducts
- What causes this ? See photos
- Return chase/electrical
- Power assited fan for flue
- Flue material
- Air Source Heat Pumps - controller
- 6 Air Handlers 3 Condensers
- Power vent
- Foul odor at returns
- heat strips
- Condensate pump
- Bryant-Carrier Furnace install docs ?
- Quirky bathroom exhaust fan
- Age and size of unit
- 2/4 TYPE STO WIRE
- Enclosed oil tank
- Unconditioned space ducting
- Type of in floor
- 2 furnace units attached
- Return Duct (NOPE)
- Insulation on a/c refrigerant line
- chimney as supply duct
- 1950s supply damper control or what?
- New Home Construction and Flex Duct
- Anyone have a good pan drain line drawing or illustration they are willing to share?
- If fan is "On" will compressor still come on?
- Flex Ducts
- Sewer line thru return air duct
- Barry Stone Article
- Age of an Armstrong gas furnace???
- Humidifier drain line
- Ventilation requirement
- Heat Pump Question
- How to start an AC unit when thermostat is missing
- Finding This hard to believe
- Are Lintels needed for venting thru brick wall?
- Refrigerant leakage from coil
- 'Over fused' Electric Furnace
- Help with heating system
- Why is this AC unit working?
- water heater exhaust and air intake
- Partially blocked registers
- excessive moisture on duct system.
- Flex Gas Connector identification
- Condensing Furnace Air Intake Pitch
- New place to dump condensate
- This can't be correct
- Oil furnace vent type
- Breaker size in box VS data plate on unit.
- Condensation under condenser
- Missing secondary drain lines
- Attic Fire Stop
- evap coil
- equipment age
- Armstrong oil furnace questions
- Age of Electric Furnace
- Unheated Basement Ventilation
- Age of GE Condensing Units
- Condensate drain pipe above front door???
- Broiler settings for ceiling heat
- Disconnected Flue Pipe
- A few a/c ??s
- Slope of furnace vent
- Gas furnace venting
- Exhaust vents under a deck
- bathroom wall heater
- Take a look at the two middle burners in photos
- water heater failure
- portable heat pump in "bedroom"
- 3 ton condenser 1.5 ton air handler
- Furnace Age
- Fireplace Combustion Air Intake
- Anyone have a HVAC humidifier diagram they can share. See photo.
- Anyone have experience with these?
- Orphaned Furnace w/ Open Abandoned Flue
- Combustion Air Intake Vent
- Nice cp lookup
- Filtered Combustion Air?
- Minimum clearance between air-cooled condensing units
- Trane Heat Pump Year & Ton
- Radiant Heating Manifold
- When is a differential too high and what could a very high differential indicate?
- This return look like it may be an issue?
- Reporting decommissioned oil tank in good condition
- water in High Efficeincy furnace vent
- over sized ac breaker
- Sediment traps not insatalled???
- Age of Ducane gas furnace
- HVAC Ducts To Garage
- Any of you guys seen one of these furnaces before?
- munchkin boiler age
- Scorching at boiler cabinet
- re- How much a/c needed
- Condensate pump in attic
- Oil Furnance Age
- Overheatd AC disconnect
- Bryant 90+ Efficeincy condensate drain problem
- Garage hanging heater
- What causes this? See photo.
- Yet….another ……float switch question (With photo)
- furnace condensate line draining into a small hole in the concrete floor???
- 1967 boiler inspection
- Exhaust duct shared by bathroom fans
- Placement of supply registers in basement
- Condensate line gurgling
- What do you recommend for high rise humidification?
- TPR pipe
- Will a furnce heat exchanger crack with excessive heat?
- What code would this be.
- Boiler vent size increase
- furnace venting on ac unit
- Radiant heat
- Appliance connector inside furnace cabinet
- Boiler Installation Advice
- One return air in basement
- Corrugated Stainless Steel Tubing (CSST)
- No automatic shutoff switch at furnace service panel.
- Extra copper line at Evaporator. See photo.
- Return air duct in crawl space
- Can anyone identify damage
- Church mechanical room in NC
- Church mechanical room in NC
- Venting a high efficient system
- nuisance condensate
- worst ac disconnect
- Rubber? loop piping for radiant heating zones in mid 80s BC, Canada home - anybody?
- A "standard" split for an electric heat pump?
- A/C Duct Mastic
- gas vent on roof forming ice