Search Results - HVAC-Talk: Heating, Air & Refrigeration Discussion

How to Calculate Optimal Outside Temperature to Switch from Heat Pump to Gas Furnace?

Started by Semibum, 01-21-2013 08:33 PM

Replies: 3
Views: 458

Last Post By:: Last Post: 01-22-2013 05:50 AM; by catmanacman

Forum:
AOP Residential HVAC

Any leads on what this data means?

Started by geercom, 08-28-2012 11:33 AM

Replies: 0
Views: 525

Last Post By:: Last Post: 08-28-2012 11:33 AM; by geercom

Forum:
AOP Commercial HVAC

TXV conversion?

Started by Kemp, 07-09-2012 06:05 PM

conversion, efficiency, piston, replace, tev, txv

Replies: 7
Views: 417

Last Post By:: Last Post: 07-09-2012 07:46 PM; by Kemp

Forum:
AOP Residential HVAC

co-mingling separate air handlers

Started by kenvogt, 04-27-2012 02:38 PM

efficiency, efficient comfort, thermidistat, thermostat, two-stage

Replies: 6
Views: 922

Last Post By:: Last Post: 04-27-2012 06:05 PM; by kenvogt

Forum:
AOP Residential HVAC

New Heat Pump & Exchange - complaint=problems found

Started by tryinthis2, 03-07-2012 05:32 PM

Replies: 1
Views: 868

Last Post By:: Last Post: 03-07-2012 06:06 PM; by skippedover

Forum:
AOP Residential HVAC

80% or 90%+

Started by j4john10, 02-20-2012 03:58 AM

Replies: 11
Views: 720

Last Post By:: Last Post: 02-21-2012 03:02 PM; by Kevin Weaver

Forum:
AOP Residential HVAC

Unit Heater Efficiency over time?

Started by bale, 08-19-2011 04:14 PM

efficiency, energy, gas burner, heat exchangers

Replies: 6
Views: 912

Last Post By:: Last Post: 08-20-2011 07:28 AM; by bale

Forum:
General Discussion

Unit Heater Efficiency over time?

Started by bale, 08-19-2011 03:48 PM

efficiency, energy efficiency, gas burner

Replies: 0
Views: 232

Last Post By:: Last Post: 08-19-2011 03:48 PM; by bale

Forum:
AOP Residential HVAC

Fluid Cooler sump temperatures

Started by Rocketfire, 08-03-2011 03:22 PM

cooling towers, efficiency, fluid cooler, heat transfer fluids, water cooled

Replies: 1
Views: 370

Last Post By:: Last Post: 08-03-2011 03:30 PM; by freonr22

Forum:
General Discussion

Recommendations for HVAC system for small/efficient home in NC?

Started by monocongo, 06-03-2011 12:25 PM

Replies: 0
Views: 322

Last Post By:: Last Post: 06-03-2011 12:25 PM; by monocongo

Forum:
AOP Residential HVAC

What is the efficiency of my present furnace?

Started by montyfrost, 04-10-2011 03:10 PM

Replies: 4
Views: 572

Last Post By:: Last Post: 04-10-2011 11:36 PM; by airtight_tech

Forum:
AOP Residential HVAC

Replacing my 20+ year old furnace with ??

Started by Shaftab, 01-12-2011 10:28 AM

2 Pages •: 1 2

calculation, efficiency, furnace, lennox, stage, variable, york

Replies: 17
Views: 2,500

Last Post By:: Last Post: 01-13-2011 09:48 PM; by amd

Forum:
AOP Residential HVAC

Resource for looking up AFUEs on older units?

Started by gnathanson, 09-14-2010 05:23 PM

boiler manufacturers, efficiency, furnace

Replies: 1
Views: 588

Last Post By:: Last Post: 09-14-2010 05:47 PM; by skippedover

Forum:
AOP Residential HVAC

Efficiency riddle

Started by dstrutto, 12-04-2009 11:27 AM

boiler, combustion, efficiency, loss, riddle

Replies: 1
Views: 813

Last Post By:: Last Post: 12-04-2009 11:51 AM; by beenthere

Forum:
AOP Residential HVAC

High Efficiency Boiler Recommendations

Started by RockyMtnHigh, 08-01-2009 10:56 PM

Replies: 1
Views: 534

Last Post By:: Last Post: 08-02-2009 01:19 PM; by gchank

Forum:
AOP Residential HVAC

Trane and American Standard have similar air filtration systems some built-in.

Started by quiensoyyo, 04-18-2009 05:39 PM

air filtration, built-in, cleaning, comparison, efficiency, guarantee, noise

Replies: 10
Views: 2,192

Last Post By:: Last Post: 04-28-2009 12:22 PM; by quiensoyyo

Forum:
AOP Residential HVAC

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How to Calculate Optimal Outside Temperature to Switch from Heat Pump to Gas Furnace?

Any leads on what this data means?

TXV conversion?

co-mingling separate air handlers

New Heat Pump & Exchange - complaint=problems found

80% or 90%+

Unit Heater Efficiency over time?

Unit Heater Efficiency over time?

Fluid Cooler sump temperatures

Recommendations for HVAC system for small/efficient home in NC?

What is the efficiency of my present furnace?

Replacing my 20+ year old furnace with ??

Resource for looking up AFUEs on older units?

Efficiency riddle

High Efficiency Boiler Recommendations

Trane and American Standard have similar air filtration systems some built-in.