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Search:

Tag: efficiency

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Bosch 2.0 BOVB Operating Range vs Oil Furnace

Started by NickRizzo, 12-21-2023 03:41 PM
- Replies: 8
- Views: 517
Last Post By:

Last Post: 12-25-2023 10:01 PM

by Freezeking2000

Forum:
AOP Residential HVAC (Beenthere Zone)
Cooling a spray-foamed attic in the WINTER

Started by dansminisplits, 12-12-2023 06:38 PM
- Replies: 5
- Views: 582
Last Post By:

Last Post: 12-14-2023 09:30 PM

by billygoat22

Forum:
AOP Residential HVAC (Beenthere Zone)
Operating cost AprilAire 800 vs 700 / how many hours per day do they run?

Started by jhvacq, 11-05-2023 11:49 PM

2 Pages •

1 2
- Replies: 25
- Views: 3,852
Last Post By:

Last Post: 12-10-2023 07:07 AM

by teddy bear

Forum:
AOP Residential HVAC (Beenthere Zone)
serving 2nd floor with basement vs attic air handlers

Started by Superchief, 12-24-2021 01:09 PM
- Replies: 4
- Views: 1,289
Last Post By:

Last Post: 12-26-2021 12:57 PM

by Superchief

Forum:
AOP Residential HVAC (Beenthere Zone)
duel fuel or just high efficiency

Started by dovid1365, 12-18-2021 06:40 PM
- Replies: 10
- Views: 1,330
Last Post By:

Last Post: 12-21-2021 10:17 AM

by kdean1

Forum:
AOP Residential HVAC (Beenthere Zone)
Seeking York Centrifugal Chillers Part Load Performance Curves

Started by livefortoday, 12-06-2021 06:49 PM
- Replies: 1
- Views: 1,315
Last Post By:

Last Post: 12-16-2021 12:41 PM

by dan sw fl

Forum:
AOP Commercial HVAC
Heat Pump: Uses Less Energy the Colder It Gets?

Started by proxybox, 08-27-2021 10:32 PM
- Replies: 9
- Views: 1,828
Last Post By:

Last Post: 08-28-2021 06:22 PM

by proxybox

Forum:
AOP Residential HVAC (Beenthere Zone)
Open concept house: 1st/2nd floor systems not sharing load; improvements/SEER/EER?

Started by jason73, 03-27-2021 01:20 PM
- Replies: 2
- Views: 1,039
Last Post By:

Last Post: 03-31-2021 02:02 PM

by Bazooka Joe

Forum:
AOP Residential HVAC (Beenthere Zone)
Upflow Condenser Deflector - Market Size Estimate Request

Started by Mark21104, 03-19-2021 02:56 PM

2 Pages •

1 2
- Replies: 21
- Views: 27,317
Last Post By:

Last Post: 03-26-2021 09:05 AM

by Mark21104

Forum:
Members Inventions **NEW
Question re well-maintained but “aging” Trane oil furnace vs newer system

Started by JDiamond, 03-12-2021 04:04 PM
- Replies: 2
- Views: 2,377
Last Post By:

Last Post: 03-13-2021 09:06 AM

by vstech

Forum:
AOP Residential HVAC (Beenthere Zone)
Tell me what's wrong with my solution

Started by ghghunter, 12-24-2020 07:04 PM
- Replies: 5
- Views: 2,059
Last Post By:

Last Post: 12-25-2020 06:32 AM

by beenthere

Forum:
AOP Residential HVAC (Beenthere Zone)
Heat Pump Output Calculation - Help!!!

Started by nnm223, 08-01-2020 10:58 AM
- Replies: 6
- Views: 2,530
Last Post By:

Last Post: 08-05-2020 08:34 AM

by nnm223

Forum:
Tech to Tech Chat - Residential
2 @ New HVACs installed ... Are they performing?

Started by sigmondzavion, 07-17-2020 10:01 PM
- Replies: 3
- Views: 1,159
Last Post By:

Last Post: 07-18-2020 09:20 AM

by pecmsg

Forum:
AOP Residential HVAC (Beenthere Zone)
Dynamic Furnace Efficiency

Started by morronini, 06-25-2020 06:59 PM
- Replies: 2
- Views: 2,101
Last Post By:

Last Post: 06-25-2020 10:19 PM

by morronini

Forum:
General Discussion
Will Attic Fan Help 21 Year Old AC Run More Efficiently?

Started by CoolinSD, 07-21-2019 03:14 PM
- Replies: 3
- Views: 1,814
Last Post By:

Last Post: 07-28-2019 03:43 PM

by CoolinSD

Forum:
AOP Residential HVAC (Beenthere Zone)
Furnace Efficiency

Started by rmeadows, 03-08-2019 05:45 PM
- Replies: 4
- Views: 1,279
Last Post By:

Last Post: 03-08-2019 07:00 PM

by BaldLoonie

Forum:
AOP Residential HVAC (Beenthere Zone)
Boiler efficiency

Started by GreenGiant117, 11-08-2018 08:03 AM
- Replies: 3
- Views: 2,520
Last Post By:

Last Post: 11-08-2018 06:13 PM

by STEVEusaPA

Forum:
AOP Residential HVAC (Beenthere Zone)
Coil cleaners bad for coils?

Started by TannerD, 07-28-2018 10:10 PM
- Replies: 11
- Views: 13,313
Last Post By:

Last Post: 07-29-2018 06:47 PM

by Core_d

Forum:
Tools & Test Equipment
Replacing Furnace (Trane Xe80) - Upgrade or New Brand?

Started by CRIRoz, 06-13-2018 09:23 AM
- Replies: 1
- Views: 3,039
Last Post By:

Last Post: 06-13-2018 04:41 PM

by beenthere

Forum:
AOP Residential HVAC (Beenthere Zone)
Efficiency VS Size for Mini Split Systems

Started by talllogic, 04-06-2018 05:39 PM
- Replies: 2
- Views: 2,411
Last Post By:

Last Post: 04-08-2018 04:15 AM

by beenthere

Forum:
AOP Residential HVAC (Beenthere Zone)
New Lennox System - Couple Questions & Filter Replacement. HELP!

Started by jeffcwheeler, 08-23-2016 02:56 PM
- Replies: 14
- Views: 6,433
Last Post By:

Last Post: 08-23-2016 11:54 PM

by jeffcwheeler

Forum:
AOP Residential HVAC (Beenthere Zone)
Carrier 24AAA5 and Coil to replace 30 plus year old system

Started by dylanmitchell, 08-06-2016 11:28 PM
- Replies: 4
- Views: 3,702
Last Post By:

Last Post: 08-11-2016 12:02 AM

by dylanmitchell

Forum:
AOP Residential HVAC (Beenthere Zone)
Help with drastically reduced cooling capability

Started by millerajm, 08-09-2016 12:57 PM
- Replies: 8
- Views: 2,692
Last Post By:

Last Post: 08-09-2016 05:05 PM

by millerajm

Forum:
AOP Residential HVAC (Beenthere Zone)
Cost Effeciency: Heat Pump + Gas Furnace Backup OR Air Conditioner + Gas Furnace?

Started by DGingrich, 04-24-2016 02:30 PM

2 Pages •

1 2
- Replies: 25
- Views: 10,209
Last Post By:

Last Post: 04-25-2016 07:04 PM

by ga-hvac-tech

Forum:
AOP Residential HVAC (Beenthere Zone)
Natural Gas Furnace ... Maximizing the Efficiency.

Started by Robert Morris, 01-03-2016 02:37 AM
- Replies: 4
- Views: 3,525
Last Post By:

Last Post: 01-03-2016 09:26 AM

by beenthere

Forum:
AOP Residential HVAC (Beenthere Zone)
Actual/operating AFUE of older oil furnace?

Started by philsmith22, 11-23-2015 01:36 PM
- Replies: 15
- Views: 4,988
Last Post By:

Last Post: 11-30-2015 01:04 PM

by philsmith22

Forum:
AOP Residential HVAC (Beenthere Zone)
1300 sq ft space in mild climate. Is it worth it to upgrade to a variable speed?

Started by casadecobre, 08-25-2015 06:48 PM
- Replies: 10
- Views: 5,631
Last Post By:

Last Post: 08-27-2015 04:30 AM

by dan sw fl

Forum:
AOP Residential HVAC (Beenthere Zone)
2 or 3 mini-splits vs 1 multi-split. What are the issues to consider?

Started by DavidJ, 08-20-2015 07:56 AM
- Replies: 16
- Views: 12,316
Last Post By:

Last Post: 08-26-2015 02:41 PM

by stevereigh

Forum:
AOP Residential HVAC (Beenthere Zone)
Advice on new system components?

Started by CGM, 08-21-2015 12:05 PM
- Replies: 7
- Views: 4,227
Last Post By:

Last Post: 08-21-2015 10:05 PM

by teddy bear

Forum:
AOP Residential HVAC (Beenthere Zone)
Running Air Conditioner at night

Started by Pondhockey, 06-28-2015 04:40 PM
- Replies: 12
- Views: 3,361
Last Post By:

Last Post: 06-28-2015 11:42 PM

by Pondhockey

Forum:
AOP Residential HVAC (Beenthere Zone)
What brands are looking good for higher efficiency this season?

Started by kd4ttc, 06-08-2015 12:41 AM
- Replies: 1
- Views: 2,808
Last Post By:

Last Post: 06-08-2015 01:22 AM

by Hrdworkingacguy

Forum:
AOP Residential HVAC (Beenthere Zone)
Which 2-3 ton heat pumps are more efficient without being crazy expensive?

Started by DanKegel, 03-13-2015 10:47 PM
- Replies: 17
- Views: 5,366
Last Post By:

Last Post: 03-17-2015 11:11 AM

by DanKegel

Forum:
AOP Residential HVAC (Beenthere Zone)
A Question for the HVAC Experts

Started by Bobby G., 01-21-2015 11:28 PM

2 Pages •

1 2
- Replies: 25
- Views: 9,332
Last Post By:

Last Post: 01-27-2015 06:19 PM

by toocoolforschool

Forum:
AOP Residential HVAC (Beenthere Zone)
Quest for max efficiency and reliability

Started by thesheet, 08-30-2014 08:47 AM
- Replies: 0
- Views: 1,512
Last Post By:

Last Post: 08-30-2014 08:47 AM

by thesheet

Forum:
General Discussion
Mini-Split vs Heat Pump on Top Floor of Old House

Started by PaColonial, 08-24-2014 12:29 AM
- Replies: 17
- Views: 10,674
Last Post By:

Last Post: 08-27-2014 10:26 AM

by PaColonial

Forum:
AOP Residential HVAC (Beenthere Zone)
Can old gas boilers be changed from chimney to window venting?

Started by DaisyM, 01-02-2014 03:35 PM

2 Pages •

1 2
- Replies: 22
- Views: 13,273
Last Post By:

Last Post: 01-04-2014 04:38 PM

by hvacvegas

Forum:
AOP Residential HVAC (Beenthere Zone)
Energy saving for american standard furnace

Started by bglenn1983, 12-10-2013 04:19 PM
- Replies: 3
- Views: 1,830
Last Post By:

Last Post: 12-11-2013 09:48 PM

by 54regcab

Forum:
AOP Residential HVAC (Beenthere Zone)
Re-Using Chimney with 80% Effic unit

Started by jbroberts38, 10-25-2013 10:06 AM
- Replies: 4
- Views: 2,780
Last Post By:

Last Post: 10-26-2013 12:52 PM

by jbroberts38

Forum:
AOP Residential HVAC (Beenthere Zone)
Honestly - Best Unit...Can't be Trane !

Started by tedrhoads, 09-06-2013 02:13 AM
- Replies: 14
- Views: 5,072
Last Post By:

Last Post: 09-06-2013 08:22 PM

by BaldLoonie

Forum:
AOP Residential HVAC (Beenthere Zone)
Upgrade to 3 ton from 2.5?

Started by SouthernGrown, 06-24-2013 12:01 PM
- Replies: 5
- Views: 4,589
Last Post By:

Last Post: 06-25-2013 11:04 AM

by SouthernGrown

Forum:
AOP Residential HVAC (Beenthere Zone)
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: 4,794
Last Post By:

Last Post: 01-22-2013 05:50 AM

by catmanacman

Forum:
AOP Residential HVAC (Beenthere Zone)
Any leads on what this data means?

Started by geercom, 08-28-2012 11:33 AM
- Replies: 0
- Views: 2,021
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
- Replies: 7
- Views: 5,617
Last Post By:

Last Post: 07-09-2012 07:46 PM

by Kemp

Forum:
AOP Residential HVAC (Beenthere Zone)
co-mingling separate air handlers

Started by kenvogt, 04-27-2012 02:38 PM
- Replies: 6
- Views: 4,699
Last Post By:

Last Post: 04-27-2012 06:05 PM

by kenvogt

Forum:
AOP Residential HVAC (Beenthere Zone)
New Heat Pump & Exchange - complaint=problems found

Started by tryinthis2, 03-07-2012 05:32 PM
- Replies: 1
- Views: 2,408
Last Post By:

Last Post: 03-07-2012 06:06 PM

by skippedover

Forum:
AOP Residential HVAC (Beenthere Zone)
80% or 90%+

Started by j4john10, 02-20-2012 03:58 AM
- Replies: 11
- Views: 4,081
Last Post By:

Last Post: 02-21-2012 03:02 PM

by Kevin Weaver

Forum:
AOP Residential HVAC (Beenthere Zone)
low capacity 15000 kcal chiller

Started by Thermoadams, 11-22-2011 10:27 AM
- Replies: 1
- Views: 2,991
Last Post By:

Last Post: 11-22-2011 06:27 PM

by klove

Forum:
Chillers Open Forum
Unit Heater Efficiency over time?

Started by bale, 08-19-2011 04:14 PM
- Replies: 6
- Views: 2,688
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
- Replies: 0
- Views: 1,357
Last Post By:

Last Post: 08-19-2011 03:48 PM

by bale

Forum:
AOP Residential HVAC (Beenthere Zone)
Fluid Cooler sump temperatures

Started by Rocketfire, 08-03-2011 03:22 PM
- Replies: 1
- Views: 1,787
Last Post By:

Last Post: 08-03-2011 03:30 PM

by freonr22

Forum:
General Discussion

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