HVAC Discussions

Envision Water Furnace ?

Mo.novo49a111ctl ser.080901867 Keeps tripping on Water Flow, turn off the breakers and turn them back on and its fine f...

7 comments posted 17yrs

posted by mmetcalf_at_yahoo_dot_com

7 comments posted 17yrs posted by mmetcalf_at_yahoo_dot_com

Dehydrating Heavily Water Laden Systems

With new installations we would ordinarily start the pre-commissioning tests with a strength pressure test, perhaps for...

11 comments posted 17yrs

posted by mlo

11 comments posted 17yrs posted by mlo

outside temp reading jumpy

I have a Lennox heat pump with the outdoor temp probe. It sometimes changes 5-10 degrees within a few minute period. I&...

5 comments posted 17yrs

posted by djdieterle

5 comments posted 17yrs posted by djdieterle

Highest efficiency furnace-for the history buffs out there

Hello group, Just curious, who has manufactured the residential furnace with the highest efficiency, to date, in North...

11 comments posted 17yrs

posted by cfans

11 comments posted 17yrs posted by cfans

How is this thing SUPPOSED to work?

I have a 7 year old Goodman 3 1/2 ton "split system" heat pump; the compressor is about 40 feet from the air handler. T...

6 comments posted 17yrs

posted by winwinsit

6 comments posted 17yrs posted by winwinsit

Carrier AC/Heatpump shorting out

We have a Carrier AC/Heat pump. We have been having a problem with the 5amp fuse that is located on the inside unit. Wh...

21 comments posted 17yrs

posted by adriannefails

21 comments posted 17yrs posted by adriannefails

Faculty Position - Architectural Engineering - Drexel University

Full-Time Tenure Track Faculty Position at Drexel University The Department of Civil, Architectural and Environmental E...

0 comments posted 17yrs

posted by cnhaas

0 comments posted 17yrs posted by cnhaas

Biocide 4-stage air purification system

I will appreciate receiving opinions from anybody experienced with the Biocide 4-Stage air purification system. Thanks....

1 comments posted 17yrs

posted by wicks

1 comments posted 17yrs posted by wicks

Weil-McLain on last legs...keep replacing parts or whole new system?

Hello, Need some advice. Purchase a 1250 sq ft condo in July. It has a Weil- McLain AHE boiler Series 4 that was instal...

4 comments posted 17yrs

posted by alaskarockgirl

4 comments posted 17yrs posted by alaskarockgirl

Fitting round duct together

Is a tool such as a Malco C5: http://www.amazon.com/Malco-C5XXX-C5-Pipe-Crimper/dp/B0002895EWwhat I would use to connec...

7 comments posted 17yrs

posted by fl_bag

7 comments posted 17yrs posted by fl_bag

Air Conditioning with Heat Pump - AC Overstock

AC Overstock sells Goodman, Ruud and Carrier online! Seems like this company finally got some products going. Any insta...

0 comments posted 17yrs

posted by jimwarner0555

0 comments posted 17yrs posted by jimwarner0555

Air enthalpy pressure charts.

Hello, Has anyone any link to a chart or calculation of enthalpy against temperature at various pressures? I have found...

0 comments posted 17yrs

posted by philnik

0 comments posted 17yrs posted by philnik

Sequencer Relays

Hi all, I have a heat pump with electric heat backup elements in my blower unit. There are 3 elements in this 15KW unit...

3 comments posted 17yrs

posted by EnigmaPaul

3 comments posted 17yrs posted by EnigmaPaul

Homemoaner and the cost of freon

I was talking with a mechanical engineer from Airco about the time Christian Brothers charged me $375 for 4.5 lbs of Fr...

160 comments posted 17yrs

posted by email

160 comments posted 17yrs posted by email

"central environment systems" oil furnace chamber

I have a Central Environment Systems hot air oil furnace in which the chamber material inside the heat exchanger has cr...

4 comments posted 17yrs

posted by lwiederh

4 comments posted 17yrs posted by lwiederh